Say plainly that stats cover all teams

The README said stats were "not team-scoped by the server", which reads
as though they were unscoped. They are scoped, to all of the caller's
teams (TestTeams_AlertsAndStatsAreScoped in terdut-server); what they
cannot do is narrow to one. Docs only, no code change.

.gitea/workflows/ci.yaml

@@ -0,0 +1,63 @@
+name: CI
+
+# The release workflow gates a tag, which is late: a broken commit sits green until
+# somebody decides to publish. This runs the same checks on the way in.
+#
+# push is scoped to main so that a branch pushed as part of a pull request is not checked
+# twice.
+#
+# No actions/checkout, deliberately -- same as the terdut-server, letsvisit and charts
+# workflows. The runner image is ubuntu:22.04 whose `nodejs` package is Node 12, and
+# actions/checkout@v4 is built with ES2022 static initialiser blocks, so it dies with
+# `SyntaxError: Unexpected token '{'` before running. Cloning with git directly avoids JS
+# actions entirely. This repo is public, so the clone needs no credential at all.
+#
+# `${{ }}` values are passed through `env:` and referenced as quoted shell variables: a
+# ref name is attacker-influenced by anyone who can push a branch or open a PR, and
+# expanding one straight into `run:` is a shell-injection vector.
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+# A rapid series of pushes only needs the last one checked.
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  REPO_URL: https://git.ryuvia.com/niklas/terdut-tui.git
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      # act_runner destroys a job's own volumes when it finishes, so without these every
+      # run re-downloads the whole module graph. The names must appear in the runner's
+      # container.valid_volumes allowlist (charts/act-runner in the k8s repo); unlisted
+      # volumes are dropped silently, so a workflow that looks correct can still be
+      # running uncached.
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: |
+          if [ -n "$HEAD_SHA" ]; then
+            # A pull_request ref_name is "<n>/merge", which is not a fetchable branch.
+            git clone "$REPO_URL" .
+            git checkout -q "$HEAD_SHA"
+          else
+            git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+          fi
+
+      # The Makefile is the single definition of the gate -- gofmt with both of its failure
+      # modes handled, go vet, and the tests -- so this is exactly what a developer and the
+      # release skill run. See the comments on the targets for why each is shaped as it is.
+      - name: Format, vet and test
+        run: make fmt lint test

.gitea/workflows/release.yaml

@@ -0,0 +1,129 @@
+name: Release
+
+# Checkout, interpolation and caching conventions match ci.yaml -- see the header there
+# for why there are no JS actions and why every `${{ }}` goes through `env:`.
+#
+# There is no upload-artifact/download-artifact equivalent here (both are JS actions, and
+# this Gitea has no artifact store wired up), so the job that builds the binaries is also
+# the job that publishes them. Nothing is handed between jobs.
+#
+# The asset names matter beyond being tidy: internal/updater looks for exactly
+# terdut-tui-<tag>-<goos>-<goarch> in the latest release. The pattern is defined once, by
+# `make dist` (and `make dist-assets`, which the release skill checks the published release
+# against) -- see DIST_TARGETS in the Makefile before touching it.
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  REPO_URL: https://git.ryuvia.com/niklas/terdut-tui.git
+  API: https://git.ryuvia.com/api/v1/repos/niklas/terdut-tui
+
+jobs:
+  # Gates the build, so a tag that fails here publishes no binaries.
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+        run: git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+
+      # Same target CI and the release skill run; a tag that fails it publishes nothing.
+      - name: Format, vet and test
+        run: make fmt lint test
+
+  binaries:
+    needs: test
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+        run: git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+
+      # The Makefile owns the target list and the asset names -- see DIST_TARGETS there for
+      # why the naming pattern cannot change.
+      - name: Build every target
+        env:
+          REF_NAME: ${{ github.ref_name }}
+        run: make dist VERSION="$REF_NAME"
+
+      # Creating the release is made idempotent rather than assumed-new: a re-run of a
+      # failed release must not die on the release that already exists. Assets are
+      # replaced the same way, so a re-run repairs a partial upload.
+      - name: Publish the release
+        env:
+          REF_NAME: ${{ github.ref_name }}
+          TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+        run: |
+          set -eu
+          auth="Authorization: token $TOKEN"
+
+          body=$(curl -sf -H "$auth" "$API/releases/tags/$REF_NAME" || true)
+          if [ -z "$body" ]; then
+            body=$(curl -sf -X POST -H "$auth" -H 'Content-Type: application/json' \
+              -d "{\"tag_name\":\"$REF_NAME\",\"name\":\"$REF_NAME\"}" \
+              "$API/releases")
+          fi
+
+          # The release object serialises `id` first, so the first match is the release's
+          # own id and not one of the nested author/asset ids.
+          release_id=$(printf '%s' "$body" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)
+          [ -n "$release_id" ] || { echo "::error::could not determine release id"; exit 1; }
+          echo "release id $release_id"
+
+          # The release notes are the tag's own message, minus its subject line: the
+          # tag body is the changelog for this project, and without this the release
+          # page stays empty. Only an annotated tag has one, and only a release with
+          # no notes is filled, so a re-run repairs a release created empty without
+          # overwriting notes somebody has since edited by hand.
+          #
+          # There is no jq in this image, so the JSON string is escaped by hand:
+          # backslashes first (or the ones added next would double), then quotes and
+          # tabs, then each line end becomes a literal \n.
+          if [ "$(git cat-file -t "$REF_NAME")" = tag ] \
+             && printf '%s' "$body" | grep -q '"body":""'; then
+            notes=$(git tag -l --format='%(contents)' "$REF_NAME" | sed '1,2d')
+            if [ -n "$notes" ]; then
+              notes_json=$(printf '%s\n' "$notes" \
+                | sed -e 's/\\/\\\\/g' -e 's/"/\\"/g' -e 's/\t/\\t/g' -e 's/\r$//' \
+                | awk 'BEGIN { ORS = "\\n" } { print }')
+              echo "setting release notes from the tag message"
+              curl -sf -X PATCH -H "$auth" -H 'Content-Type: application/json' \
+                -d "{\"body\":\"$notes_json\"}" "$API/releases/$release_id" > /dev/null
+            fi
+          fi
+
+          for f in dist/*; do
+            name=$(basename "$f")
+            # Drop an existing asset of the same name first: Gitea happily stores two
+            # attachments with one name, and the updater matches by name.
+            old=$(curl -sf -H "$auth" "$API/releases/$release_id/assets" \
+                  | tr '}' '\n' | grep "\"name\":\"$name\"" \
+                  | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2 || true)
+            if [ -n "$old" ]; then
+              curl -sf -X DELETE -H "$auth" "$API/releases/$release_id/assets/$old" || true
+            fi
+            echo "uploading $name"
+            curl -sf -X POST -H "$auth" -F "attachment=@$f" \
+              "$API/releases/$release_id/assets?name=$name" > /dev/null
+          done

.github/workflows/ci.yml

@@ -1,32 +0,0 @@
-name: CI
-
-# The release workflow gates a tag, which is late: a broken commit sits green
-# until somebody decides to publish. This runs the same checks on the way in.
-#
-# push is scoped to main so that a branch pushed as part of a pull request is
-# not checked twice.
-on:
-  push:
-    branches: [main]
-  pull_request:
-
-# A rapid series of pushes only needs the last one checked.
-concurrency:
-  group: ci-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-go@v5
-        with:
-          go-version-file: go.mod
-
-      - name: Vet
-        run: go vet ./...
-
-      - name: Test
-        run: go test ./...

.github/workflows/release.yml

@@ -1,76 +0,0 @@
-name: Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  # Gates the build, so a tag that fails here publishes no binaries. The suite
-  # covers the API client against a stub server, the Update state machine, and
-  # View rendering — all three are pure enough to test without a terminal.
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-go@v5
-        with:
-          go-version-file: go.mod
-
-      - name: Vet
-        run: go vet ./...
-
-      - name: Test
-        run: go test ./...
-
-  build:
-    needs: test
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        include:
-          - goos: linux
-            goarch: amd64
-          - goos: linux
-            goarch: arm64
-          - goos: darwin
-            goarch: amd64
-          - goos: darwin
-            goarch: arm64
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-go@v5
-        with:
-          go-version-file: go.mod
-
-      - name: Build
-        env:
-          GOOS: ${{ matrix.goos }}
-          GOARCH: ${{ matrix.goarch }}
-        run: |
-          go build \
-            -ldflags "-X main.version=${{ github.ref_name }}" \
-            -o terdut-tui-${{ github.ref_name }}-${{ matrix.goos }}-${{ matrix.goarch }} \
-            .
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: terdut-tui-${{ github.ref_name }}-${{ matrix.goos }}-${{ matrix.goarch }}
-          path: terdut-tui-${{ github.ref_name }}-${{ matrix.goos }}-${{ matrix.goarch }}
-
-  release:
-    needs: build
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/download-artifact@v4
-        with:
-          merge-multiple: true
-
-      - uses: softprops/action-gh-release@v2
-        with:
-          files: 'terdut-tui-*'

.gitignore

@@ -1,2 +1,3 @@
 terdut-tui
 .graymatter/
+dist/

.release.conf

@@ -0,0 +1,9 @@
+# Read by the `release` skill (~/.claude/skills/release).
+#
+# terdut-tui publishes binaries to a Gitea release and nothing else: no image, no Helm
+# chart, no wrapper in Ryuvia/charts. KIND=binary tells the skill to gate, tag, wait for
+# release.yaml and verify the published assets, and to skip the chart steps.
+KIND=binary
+
+# English, like the rest of the terdut projects.
+PROSE_LANG=en

CLAUDE.md

@@ -1,6 +1,6 @@
 # terdut-tui
 
-TUI client for [terdut-server](https://github.com/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.4.0+**.
+TUI client for [terdut-server](https://git.ryuvia.com/niklas/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.20.0+** (team-scoped API).
 
 ## Domain model
 
@@ -11,10 +11,37 @@ The server splits alerts from incidents, and this client mirrors it:
   assignee, snooze, notes and an append-only timeline. Many alerts to one incident,
   correlated by Alertmanager's `groupKey`.
 
+The server is multi-team: incidents, alerts and the schedule belong to a team, and
+the caller only sees their own teams. `Model.activeTeamID` (0 = all) narrows the
+incident and alert lists via `team_id`; the schedule is per team and uses
+`Model.scheduleTeam()`. Users have `is_admin`, and the TUI mirrors the server's
+permission rules up front (`canEditSchedule`, `canManageUser`, `isAdmin`) so a 403 is
+explained before the round trip, not after. The server has no version endpoint;
+an old one is recognised by `GET /api/teams` answering 404 (`errServerTooOld`).
+
 All user actions target incidents. Two server behaviours the UI has to respect:
 manual resolve is **terminal** (hence the confirmation prompt), and snooze is the
 non-destructive "not now" alternative.
 
+## Release
+
+Say **"Release"** (or "Release X.Y.Z") and the `release` skill runs it. This repo is
+`KIND=binary` in `.release.conf`: it publishes binaries to a Gitea release and has no image,
+chart or wrapper-chart PR. The run is gate, commit, push, tag, wait for `release.yaml`, then
+`verify-release`. Preconditions and the plan, without side effects:
+
+```sh
+~/.claude/skills/release/scripts/release-preflight          # state + suggested version
+~/.claude/skills/release/scripts/release-preflight vX.Y.Z   # validate that release
+```
+
+- `make fmt lint test` is the gate, and it **is** what `ci.yaml` and `release.yaml` run.
+- `make dist VERSION=vX.Y.Z` builds the four binaries; `make dist-assets` lists their names.
+  The pattern `terdut-tui-<tag>-<goos>-<goarch>` is the self-updater's contract with every
+  installed binary, so changing it breaks self-update.
+- **The annotated tag's message becomes the release notes** (`release.yaml` copies it, minus
+  its subject line). Write it for a reader of the release page. Never move a published tag.
+
 ## Tech stack
 
 - Go 1.25+
@@ -25,16 +52,17 @@ non-destructive "not now" alternative.
 ## Project layout
 
 ```
-main.go                      CLI entry point: flags, config load, health check, start TUI
+main.go                      CLI entry point: flags, config load, start TUI
 internal/api/client.go       REST API client — one method per endpoint
 internal/config/config.go    Config loader (~/.config/terdut-tui/config.yaml)
+internal/theme/              Colour themes: semantic tokens, built-ins, user file loader
 internal/tui/                Bubbletea UI
   model.go                   Model struct, mode/section constants, Init(), tea.Cmd constructors
   update.go                  Update() — dispatch only, no API calls inline
   view.go                    View() — pure rendering
   keys.go                    keyMap (bubbles/key pattern)
-  styles.go                  All lipgloss styles
+  styles.go                  Styles struct — every lipgloss style, built from a theme
-internal/updater/updater.go  Self-update via GitHub Releases
+internal/updater/updater.go  Self-update via Gitea releases
 ```
 
 ## Architecture rules
@@ -43,6 +71,9 @@ internal/updater/updater.go  Self-update via GitHub Releases
 2. **`View()` is pure** — no side effects, no state mutations.
 3. **All state in `Model`** — no globals.
 4. **All styles in `styles.go`** — never use lipgloss inline in `view.go`.
+   Styles live on `Model.styles`, built once by `newStyles(theme.Theme)`; the
+   handful of free functions in `view.go` take a `Styles` as their first
+   argument. No colour literal appears outside `internal/theme`.
 
 ## Config
 
@@ -50,11 +81,24 @@ Location: `~/.config/terdut-tui/config.yaml`
 
 ```yaml
 server_url: https://terdut.example.com
-api_key: <64-char hex key>
+username: niklas      # optional, prefills the sign-in form
 refresh_interval: 30  # seconds, optional, default 30
+theme: gruvbox-dark   # optional, default gruvbox-dark
+team: Ops             # optional, team name or id to start on, default all
 ```
 
-The API key is a one-time secret generated by terdut-server (`POST /api/users/{id}/api-keys`).
+Built-in themes are `gruvbox-dark` and `gruvbox-light`; user themes are YAML
+files in `~/.config/terdut-tui/themes/`, optionally `extends:`-ing a built-in.
+See the README for the token list.
+
+There is no API key in the config. The TUI signs in as a user (`POST /api/login`, the
+same session cookie as the web UI) and `internal/session` keeps the token in
+`~/.config/terdut-tui/session.json`, mode 0600, keyed by server URL. The client
+attaches `terdut_session` itself rather than using a cookie jar, because a jar drops the
+server's Secure cookie over plain http. It must never send `Authorization` as well: the
+server judges a request with that header on it alone. A 401 from anything (`msgError`
+in `update.go`) returns to the sign-in form and clears `Model`. A user with no password
+cannot sign in, and the server answers it like a wrong one, so the form says so.
 
 ## Running
 
@@ -86,6 +130,8 @@ go build -ldflags="-X main.version=v0.1.0" -o terdut-tui .
 | 4 | On-call schedule calendar view |
 | 5 | User management and API key lifecycle |
 | 6 | Incidents: queue, timeline, ack/assign/snooze/resolve, MTTA/MTTR |
+| 7 | Teams: `T` switcher, per-team schedule, admin/disabled markers (server v0.20) |
+| 8 | Sign in as a user instead of an API key (server v0.10+ session cookie) |
 
 <!-- graymatter:instructions:begin — managed by `graymatter init`; edits inside this block are overwritten -->
 ## Memory (GrayMatter)

Makefile

@@ -1,6 +1,6 @@
 VERSION := $(shell git describe --tags --always --dirty)
 
-.PHONY: build install test
+.PHONY: build install test lint fmt dist dist-assets release-vars
 
 build:
 	go build -ldflags "-X main.version=$(VERSION)" -o terdut-tui .
@@ -8,5 +8,59 @@ build:
 install:
 	go install -ldflags "-X main.version=$(VERSION)" .
 
-test:
+# ci.yaml and release.yaml run `make fmt lint test`, so a green gate here and a green
+# pipeline are the same code rather than two descriptions of it. It is also what the
+# release skill runs before tagging.
+
+# Covers the API client against a stub server, the sign-in flow, the Update state
+# machine, and View rendering -- all pure enough to test without a terminal.
+test: ## Run the test suite
 	go test ./...
+
+lint: ## go vet
+	go vet ./...
+
+# This exists because `go vet` does not look at import order: the move to
+# git.ryuvia.com rewrote every import path without re-sorting, the new path sorts
+# before github.com/..., and both repos sat unformatted through a green CI run and
+# a release before anyone noticed.
+#
+# Both of gofmt's failure modes need handling, and they are not alike. A file that
+# is merely misformatted is listed on stdout with exit 0 -- so the failure has to
+# be raised by hand. A file that does not parse is the opposite: nothing on stdout
+# and exit 2, which a naive `[ -n "$$unformatted" ]` reads as success. The first
+# draft of this target had exactly that hole.
+fmt: ## Fail on files that are not gofmt'd
+	@if ! unformatted=$$(gofmt -l .); then \
+		echo "gofmt could not parse the tree:"; gofmt -l .; exit 1; \
+	fi; \
+	if [ -n "$$unformatted" ]; then \
+		echo "not gofmt'd:"; echo "$$unformatted"; gofmt -d .; exit 1; \
+	fi
+
+# What a release publishes. The asset names matter beyond being tidy: internal/updater
+# looks for exactly terdut-tui-<tag>-<goos>-<goarch> in the latest release and reports
+# every available name when it cannot find one. Renaming the pattern here breaks
+# self-update for every installed binary.
+DIST_TARGETS := linux/amd64 linux/arm64 darwin/amd64 darwin/arm64
+
+dist: ## Build every release binary into dist/ (VERSION=vX.Y.Z to name them)
+	@set -eu; mkdir -p dist; \
+	for target in $(DIST_TARGETS); do \
+		goos="$${target%/*}"; goarch="$${target#*/}"; \
+		out="dist/terdut-tui-$(VERSION)-$$goos-$$goarch"; \
+		echo "building $$out"; \
+		GOOS="$$goos" GOARCH="$$goarch" go build -ldflags "-X main.version=$(VERSION)" -o "$$out" .; \
+	done
+
+# The names dist produces, one per line, so the release skill can check the published
+# release has every one of them rather than a count.
+dist-assets: ## Print the asset names a release of VERSION carries
+	@for target in $(DIST_TARGETS); do \
+		echo "terdut-tui-$(VERSION)-$${target%/*}-$${target#*/}"; \
+	done
+
+# Read by the release skill for a repo that publishes binaries and no image or chart
+# (KIND=binary in .release.conf). There is nothing to say about images or charts.
+release-vars: ## Print the variables the release process reads
+	@printf 'APP=terdut-tui\n'

README.md

@@ -1,6 +1,6 @@
 # terdut-tui
 
-A terminal user interface for [terdut-server](https://github.com/terdut-server). Communicates with the server over its REST API.
+A terminal user interface for [terdut-server](https://git.ryuvia.com/niklas/terdut-server). Communicates with the server over its REST API.
 
 Written in Go using [Bubbletea](https://github.com/charmbracelet/bubbletea).
 
@@ -10,12 +10,33 @@ Written in Go using [Bubbletea](https://github.com/charmbracelet/bubbletea).
 - **Incident actions** — acknowledge, assign, snooze, note, resolve and archive
 - **Timeline** — the full history of an incident, system events, pages and notes together
 - **Alert feed** — the raw read-only alerts underneath, each linked to its incident
-- **On-call schedule** — visual calendar of who is on duty, assign and remove entries
+- **Teams** — switch between your teams, or see all of them at once
+- **On-call schedule** — visual calendar of who is on duty in a team, assign and remove entries
 - **Statistics** — MTTA and MTTR, plus alert frequency by name, hour and day
 - **User management** — add and remove users, manage API keys, set each user's ntfy topic
 
-> Requires terdut-server **v0.4.0 or later**. Earlier servers have no incidents API;
+> Requires terdut-server **v0.20.0 or later**. The server became team-scoped in
-> use terdut-tui v0.3.x with those.
+> v0.12 and this client follows it; earlier servers answer 404 for `/api/teams`
+> and the TUI says so on start. Use terdut-tui v0.9.x with servers before v0.12.
+> Escalation ladders, invites, integrations and the admin settings stay in the
+> server's web UI.
+
+## Teams
+
+Everything the server returns is scoped to the teams your key's user belongs
+to. The header shows which are on screen, and `T` steps through *all* → each of
+your teams in turn. With several teams showing, incident and alert rows carry a
+Team column.
+
+The schedule is one team's rota, so the Schedule section shows the active team,
+or with *all* showing the first team you own. Only a team's owners, and
+administrators, can change its rota; anyone else gets the reason in the status
+bar instead of a picker. The picker offers only that team's members, because the
+server refuses anybody else. Stats always cover all your teams; the server
+cannot narrow them to one.
+
+Administrators are the only users who can create or delete users, or act on
+someone else's password, topic or API keys. Everyone can manage their own.
 
 ## Alerts and incidents
 
@@ -49,16 +70,13 @@ Every delivery lands on the incident's timeline: `Notified <user> (triggered)`
 when ntfy accepted the page, and `Notification to <user> failed` when it ran out
 of retries. That second one is the one to look for when nobody's phone rang.
 
-Editing topics needs terdut-server **v0.6.0 or later**; the timeline entries need
-**v0.7.0 or later**. Against an older server the topic column stays empty and
-editing one reports the server's 404.
 
 ## Installation
 
-Download the latest release binary for your platform from the [releases page](https://github.com/yeniklas/terdut-tui/releases), or build from source:
+Download the latest release binary for your platform from the [releases page](https://git.ryuvia.com/niklas/terdut-tui/releases), or build from source:
 
 ```bash
-go install github.com/yeniklas/terdut-tui@latest
+go install git.ryuvia.com/niklas/terdut-tui@latest
 ```
 
 ## Configuration
@@ -67,11 +85,69 @@ Create `~/.config/terdut-tui/config.yaml`:
 
 ```yaml
 server_url: https://terdut.example.com
-api_key: <your-api-key>
+username: niklas      # optional, prefills the sign-in form
 refresh_interval: 30  # seconds, optional
+theme: gruvbox-dark   # optional, this is the default
+team: Ops             # optional, a team name or id to start on; default is all
 ```
 
-The API key is generated in terdut-server. See the server documentation for how to bootstrap a user and issue an API key.
+## Signing in
+
+The TUI signs in the way the web UI does: with a user account's username and
+password, on a form shown at start. It keeps the server's session, not the
+password, in `~/.config/terdut-tui/session.json` (readable by you only), so the
+next start resumes it. The server's sessions last 30 days and slide with use.
+When it has ended, or the account is disabled or the session is ended from the web
+UI, the TUI returns to the form and says so. `L` signs out, which also ends the
+session on the server and deletes the saved one.
+
+The account needs a password, since that is what signing in uses. A user
+created only for API access has none and cannot sign in: the server answers it
+exactly like a wrong password. Set one in the web UI, or have an administrator
+press `p` on that user in Users. Too many failed attempts are rate limited by
+the server for a few minutes.
+
+> **Upgrading from v0.10.0 and earlier:** `api_key` in `config.yaml` is no longer
+> used. Remove it and sign in. API keys still exist on the server, and `k` in
+> Users still manages them, for whatever else uses them.
+
+## Themes
+
+Two themes ship with the client: `gruvbox-dark` (the default) and
+`gruvbox-light`. Both colour foregrounds only — the terminal supplies the
+background — so pick the one that matches the background you already run.
+
+To make your own, drop a file in `~/.config/terdut-tui/themes/` and name it in
+`theme:`. `extends` inherits a built-in, so a file only has to list what it
+changes:
+
+```yaml
+# ~/.config/terdut-tui/themes/mine.yaml
+extends: gruvbox-dark
+primary: "#d3869b"
+accent: "#fabd2f"
+```
+
+A file may shadow a built-in name — `themes/gruvbox-dark.yaml` is how you tweak
+the default without renaming it.
+
+Without `extends`, every token must be set. The twelve are:
+
+| Token | Where it shows |
+|---|---|
+| `primary` | header, active tab, selected row, cursors |
+| `on_primary` | text drawn *on* `primary` — the active tab and selected row |
+| `text` | incident titles and other emphasis |
+| `muted` | secondary text, dividers, footer, table headers |
+| `accent` | status line, acknowledged incidents, the by-day chart |
+| `firing` | firing alerts, triggered incidents, the by-hour chart |
+| `resolved` | resolved alerts and incidents, the top-alerts chart |
+| `error` | error banners |
+| `sev_critical`, `sev_error`, `sev_warning`, `sev_info` | the `severity` label |
+
+Values are hex (`#83a598` or `#abc`) or an ANSI palette index (`0`–`255`) if you
+would rather follow your terminal's own colours. Colours are downsampled
+automatically on 256- and 16-colour terminals, and `NO_COLOR` is honoured.
 
 ## Usage
 
@@ -94,6 +170,8 @@ Global:
 | `esc` | Go back |
 | `r` | Refresh |
 | `f` | Cycle filter |
+| `L` | Sign out |
+| `T` | Switch team: all → each of your teams (when you have more than one) |
 | `q` | Quit |
 
 The sections, in `tab` order: Incidents · Alerts · Stats · Archived · Schedule · Users.
@@ -139,6 +217,12 @@ Schedule section:
 | `d` | Remove the assignment |
 | `←` / `→` | Shift the week window |
 
+One person holds a given day. Assigning over days somebody else already has
+asks first — naming them and how many days are being taken — and moves the whole
+selection at once when you accept, so reassigning a week is one confirmation
+rather than seven deletions. The header line names the team whose rota this is,
+and "On-call today" lists everyone on call across your teams.
+
 Users section:
 
 | Key | Action |
@@ -147,3 +231,9 @@ Users section:
 | `t` | Edit the user's ntfy topic — submit empty to clear it |
 | `d` | Delete a user |
 | `k` | API keys for the selected user |
+| `p` | Set the selected user's web UI password — asks for the current one when it is your own |
+
+In Users, `k` and `d` act on the selected row, so move with `↑`/`↓` there rather
+than `k`. The Flags column marks administrators and disabled accounts. `n` and `d`
+are for administrators; `t`, `k` and `p` work on your own row, or on anyone's if you
+are one.

go.mod

@@ -1,4 +1,4 @@
-module github.com/yeniklas/terdut-tui
+module git.ryuvia.com/niklas/terdut-tui
 
 go 1.25.9
 

internal/api/client.go

@@ -3,6 +3,7 @@ package api
 import (
 	"bytes"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -11,32 +12,130 @@ import (
 	"time"
 )
 
+// SessionCookie is the cookie terdut-server's web UI signs in with.
+const SessionCookie = "terdut_session"
+
+// Client talks to terdut-server as the user who signed in. Login trades a
+// username and password for a session, the same one the web UI holds, and every
+// request after it carries that session's cookie.
+//
+// The cookie is attached by hand rather than through a cookie jar: the server
+// marks it Secure behind https, and a jar drops a Secure cookie it is handed
+// over plain http, which would make a local server unusable for no reason. There
+// is nothing else a jar would do here — the token is opaque and does not change
+// while the session lives.
 type Client struct {
 	baseURL    string
 	httpClient *http.Client
-	apiKey     string
+	session    string
 }
 
-func NewClient(baseURL, apiKey string) *Client {
+func NewClient(baseURL string) *Client {
 	return &Client{
 		baseURL: strings.TrimRight(baseURL, "/"),
-		apiKey:  apiKey,
 		httpClient: &http.Client{
 			Timeout: 10 * time.Second,
 		},
 	}
 }
 
+// SetSession resumes a session from a token saved earlier.
+func (c *Client) SetSession(token string) { c.session = token }
+
+// HasSession reports whether there is a session to try. It says nothing about
+// whether the server still honours it.
+func (c *Client) HasSession() bool { return c.session != "" }
+
+// Login signs in and returns the session token, which the client also keeps and
+// sends from then on. The server answers a wrong password, an unknown user and
+// an account with no password all with the same 401, so the caller cannot tell
+// them apart. Too many failures come back as 429.
+func (c *Client) Login(username, password string) (string, error) {
+	body := struct {
+		Username string `json:"username"`
+		Password string `json:"password"`
+	}{Username: username, Password: password}
+	req, err := c.newRequestWithBody(http.MethodPost, "/api/login", body)
+	if err != nil {
+		return "", err
+	}
+	// A stale session must not ride along on the request that replaces it.
+	req.Header.Del("Cookie")
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return "", statusError(resp)
+	}
+	for _, ck := range resp.Cookies() {
+		if ck.Name == SessionCookie && ck.Value != "" {
+			c.session = ck.Value
+			return ck.Value, nil
+		}
+	}
+	return "", fmt.Errorf("server signed us in but sent no %s cookie", SessionCookie)
+}
+
+// Logout ends the session on the server and forgets it here.
+func (c *Client) Logout() error {
+	req, err := c.newRequest(http.MethodPost, "/api/logout")
+	if err != nil {
+		return err
+	}
+	err = c.do(req, nil)
+	c.session = ""
+	return err
+}
+
+// authorize puts the session on a request.
+func (c *Client) authorize(req *http.Request) {
+	req.Header.Set("Accept", "application/json")
+	if c.session != "" {
+		req.AddCookie(&http.Cookie{Name: SessionCookie, Value: c.session})
+	}
+}
+
 func (c *Client) newRequest(method, path string) (*http.Request, error) {
 	req, err := http.NewRequest(method, c.baseURL+path, nil)
 	if err != nil {
 		return nil, err
 	}
-	req.Header.Set("Authorization", "Bearer "+c.apiKey)
+	c.authorize(req)
-	req.Header.Set("Accept", "application/json")
 	return req, nil
 }
 
+// StatusError is a response the server answered with a 4xx or 5xx. Message is
+// the server's own {"error": ...} text, empty when the body carried none.
+type StatusError struct {
+	Code    int
+	Message string
+}
+
+func (e *StatusError) Error() string {
+	if e.Message != "" {
+		return fmt.Sprintf("server returned %d: %s", e.Code, e.Message)
+	}
+	return fmt.Sprintf("server returned %d", e.Code)
+}
+
+// IsUnauthorized reports whether err is the server refusing the session: it
+// expired, was ended elsewhere, or belongs to an account since disabled.
+func IsUnauthorized(err error) bool {
+	var se *StatusError
+	return errors.As(err, &se) && se.Code == http.StatusUnauthorized
+}
+
+func statusError(resp *http.Response) error {
+	var e struct {
+		Error string `json:"error"`
+	}
+	_ = json.NewDecoder(resp.Body).Decode(&e)
+	return &StatusError{Code: resp.StatusCode, Message: e.Error}
+}
+
 func (c *Client) do(req *http.Request, out any) error {
 	resp, err := c.httpClient.Do(req)
 	if err != nil {
@@ -45,14 +144,7 @@ func (c *Client) do(req *http.Request, out any) error {
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
-		var e struct {
+		return statusError(resp)
-			Error string `json:"error"`
-		}
-		_ = json.NewDecoder(resp.Body).Decode(&e)
-		if e.Error != "" {
-			return fmt.Errorf("server returned %d: %s", resp.StatusCode, e.Error)
-		}
-		return fmt.Errorf("server returned %d", resp.StatusCode)
 	}
 
 	if out != nil {
@@ -61,14 +153,18 @@ func (c *Client) do(req *http.Request, out any) error {
 	return nil
 }
 
-// ListAlerts fetches alerts. status may be "firing", "resolved", or "" for all.
+// ListAlerts fetches alerts. teamID limits them to one team; 0 means every team
+// the caller belongs to. status may be "firing", "resolved", or "" for all.
 // Set archived=true to fetch only archived alerts; false returns only non-archived.
 //
 // Alerts are read-only on the server — there is nothing to acknowledge or
 // archive here. This is the raw feed, useful for checking what Alertmanager is
 // actually sending; the work queue is ListIncidents.
-func (c *Client) ListAlerts(status string, archived bool, limit int) ([]Alert, error) {
+func (c *Client) ListAlerts(teamID int64, status string, archived bool, limit int) ([]Alert, error) {
 	q := url.Values{}
+	if teamID > 0 {
+		q.Set("team_id", strconv.FormatInt(teamID, 10))
+	}
 	if status != "" {
 		q.Set("status", status)
 	}
@@ -110,8 +206,7 @@ func (c *Client) newRequestWithBody(method, path string, body any) (*http.Reques
 	if err != nil {
 		return nil, err
 	}
-	req.Header.Set("Authorization", "Bearer "+c.apiKey)
+	c.authorize(req)
-	req.Header.Set("Accept", "application/json")
 	req.Header.Set("Content-Type", "application/json")
 	return req, nil
 }
@@ -127,12 +222,16 @@ func (c *Client) GetAlert(id int64) (*Alert, error) {
 
 // ── Incidents ──────────────────────────────────────────────────────────────
 
-// ListIncidents fetches the work queue. status may be "triggered",
+// ListIncidents fetches the work queue. teamID limits it to one team; 0 means
+// every team the caller belongs to. status may be "triggered",
 // "acknowledged", "resolved", or "" for the server default of open incidents
 // only. archived and snoozed each switch the list to that set rather than
 // adding to it, matching the server's filters.
-func (c *Client) ListIncidents(status string, archived, snoozed bool, limit int) ([]Incident, error) {
+func (c *Client) ListIncidents(teamID int64, status string, archived, snoozed bool, limit int) ([]Incident, error) {
 	q := url.Values{}
+	if teamID > 0 {
+		q.Set("team_id", strconv.FormatInt(teamID, 10))
+	}
 	if status != "" {
 		q.Set("status", status)
 	}
@@ -318,8 +417,37 @@ func (c *Client) GetStatsByDay() ([]DayStat, error) {
 	return result, c.do(req, &result)
 }
 
-func (c *Client) GetSchedule(from, to string) ([]ScheduleEntry, error) {
+// ── Teams ──────────────────────────────────────────────────────────────────
-	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/schedule?from=%s&to=%s", from, to))
+
+// ListTeams returns the teams the caller belongs to, with the caller's role in
+// each. Everything else the server returns is scoped to these. A server that
+// predates teams (v0.12) answers 404, which is how the TUI spots one.
+func (c *Client) ListTeams() ([]Team, error) {
+	req, err := c.newRequest(http.MethodGet, "/api/teams")
+	if err != nil {
+		return nil, err
+	}
+	var teams []Team
+	return teams, c.do(req, &teams)
+}
+
+// ListTeamMembers returns who belongs to a team. A schedule can only be given to
+// its own members, so this is the assignee list for one.
+func (c *Client) ListTeamMembers(teamID int64) ([]TeamMember, error) {
+	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/teams/%d/members", teamID))
+	if err != nil {
+		return nil, err
+	}
+	var members []TeamMember
+	return members, c.do(req, &members)
+}
+
+// ── Schedule ───────────────────────────────────────────────────────────────
+
+// GetSchedule returns a team's on-call entries between two YYYY-MM-DD dates.
+func (c *Client) GetSchedule(teamID int64, from, to string) ([]ScheduleEntry, error) {
+	q := url.Values{"from": {from}, "to": {to}}
+	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/teams/%d/schedule?%s", teamID, q.Encode()))
 	if err != nil {
 		return nil, err
 	}
@@ -327,43 +455,30 @@ func (c *Client) GetSchedule(from, to string) ([]ScheduleEntry, error) {
 	return entries, c.do(req, &entries)
 }
 
-// GetCurrentOnCall returns today's on-call entry, or nil if nobody is scheduled.
+// GetCurrentOnCall returns today's on-call entries, one per team that has
-func (c *Client) GetCurrentOnCall() (*ScheduleEntry, error) {
+// somebody scheduled. It is empty, not an error, when nobody is.
+func (c *Client) GetCurrentOnCall() ([]ScheduleEntry, error) {
 	req, err := c.newRequest(http.MethodGet, "/api/schedule/current")
 	if err != nil {
 		return nil, err
 	}
-	resp, err := c.httpClient.Do(req)
+	var entries []ScheduleEntry
-	if err != nil {
+	return entries, c.do(req, &entries)
-		return nil, err
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode == http.StatusNotFound {
-		return nil, nil
-	}
-	if resp.StatusCode >= 400 {
-		var e struct {
-			Error string `json:"error"`
-		}
-		_ = json.NewDecoder(resp.Body).Decode(&e)
-		if e.Error != "" {
-			return nil, fmt.Errorf("server returned %d: %s", resp.StatusCode, e.Error)
-		}
-		return nil, fmt.Errorf("server returned %d", resp.StatusCode)
-	}
-	var entry ScheduleEntry
-	if err := json.NewDecoder(resp.Body).Decode(&entry); err != nil {
-		return nil, err
-	}
-	return &entry, nil
 }
 
-func (c *Client) AssignSchedule(userID int64, dates []string) ([]ScheduleEntry, error) {
+// AssignSchedule puts one team member on call for the given dates. Only a team
+// owner or an administrator may.
+//
+// The server holds one person per day and refuses a date somebody already has,
+// so replace is what takes a shift off its current holder. It is all-or-nothing
+// either way: a week of free and taken days moves as a unit, or not at all.
+func (c *Client) AssignSchedule(teamID, userID int64, dates []string, replace bool) ([]ScheduleEntry, error) {
 	body := struct {
-		UserID int64    `json:"user_id"`
+		UserID  int64    `json:"user_id"`
-		Dates  []string `json:"dates"`
+		Dates   []string `json:"dates"`
-	}{UserID: userID, Dates: dates}
+		Replace bool     `json:"replace,omitempty"`
-	req, err := c.newRequestWithBody(http.MethodPost, "/api/schedule", body)
+	}{UserID: userID, Dates: dates, Replace: replace}
+	req, err := c.newRequestWithBody(http.MethodPost, fmt.Sprintf("/api/teams/%d/schedule", teamID), body)
 	if err != nil {
 		return nil, err
 	}
@@ -371,14 +486,16 @@ func (c *Client) AssignSchedule(userID int64, dates []string) ([]ScheduleEntry,
 	return entries, c.do(req, &entries)
 }
 
-func (c *Client) DeleteScheduleEntry(id int64) error {
+func (c *Client) DeleteScheduleEntry(teamID, id int64) error {
-	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/schedule/%d", id))
+	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/teams/%d/schedule/%d", teamID, id))
 	if err != nil {
 		return err
 	}
 	return c.do(req, nil)
 }
 
+// ── Users ──────────────────────────────────────────────────────────────────
+
 func (c *Client) ListUsers() ([]User, error) {
 	req, err := c.newRequest(http.MethodGet, "/api/users")
 	if err != nil {
@@ -446,7 +563,33 @@ func (c *Client) DeleteAPIKey(userID, keyID int64) error {
 	return c.do(req, nil)
 }
 
-// HealthCheck calls GET /healthz (unauthenticated path, no auth needed but we send it anyway).
+// Me returns the user the API key belongs to, and whether they have a web UI
+// password.
+func (c *Client) Me() (*Me, error) {
+	req, err := c.newRequest(http.MethodGet, "/api/me")
+	if err != nil {
+		return nil, err
+	}
+	var me Me
+	return &me, c.do(req, &me)
+}
+
+// SetPassword sets a user's web UI password. current is only checked by the
+// server when a user changes their own existing password; pass "" otherwise.
+func (c *Client) SetPassword(userID int64, password, current string) error {
+	body := struct {
+		Password        string `json:"password"`
+		CurrentPassword string `json:"current_password,omitempty"`
+	}{Password: password, CurrentPassword: current}
+	req, err := c.newRequestWithBody(http.MethodPut, fmt.Sprintf("/api/users/%d/password", userID), body)
+	if err != nil {
+		return err
+	}
+	return c.do(req, nil)
+}
+
+// HealthCheck calls GET /healthz, which is unauthenticated and does no database
+// check, so it says the process is up, not that the API key works.
 func (c *Client) HealthCheck() error {
 	req, err := http.NewRequest(http.MethodGet, c.baseURL+"/healthz", nil)
 	if err != nil {

internal/api/client_test.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"encoding/json"
+	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -18,7 +19,9 @@ type call struct {
 	path   string
 	query  string
 	body   string
-	auth   string
+	cookie string
+	// authz is the Authorization header, which the client no longer sends at all.
+	authz string
 }
 
 // stub serves one canned response and records the request that fetched it.
@@ -28,22 +31,107 @@ func stub(t *testing.T, status int, response string) (*Client, *call) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		body, _ := io.ReadAll(r.Body)
 		got.method, got.path, got.query = r.Method, r.URL.Path, r.URL.RawQuery
-		got.body, got.auth = string(body), r.Header.Get("Authorization")
+		got.body, got.authz = string(body), r.Header.Get("Authorization")
+		if ck, err := r.Cookie(SessionCookie); err == nil {
+			got.cookie = ck.Value
+		}
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(status)
 		io.WriteString(w, response)
 	}))
 	t.Cleanup(srv.Close)
-	return NewClient(srv.URL, "test-key"), got
+	c := NewClient(srv.URL)
+	c.SetSession("test-session")
+	return c, got
 }
 
-func TestClient_SendsBearerToken(t *testing.T) {
+func TestClient_SendsTheSessionCookie(t *testing.T) {
 	c, got := stub(t, http.StatusOK, `[]`)
-	if _, err := c.ListIncidents("", false, false, 0); err != nil {
+	if _, err := c.ListIncidents(0, "", false, false, 0); err != nil {
 		t.Fatalf("list: %v", err)
 	}
-	if got.auth != "Bearer test-key" {
+	if got.cookie != "test-session" {
-		t.Errorf("expected bearer token, got %q", got.auth)
+		t.Errorf("expected the session cookie, got %q", got.cookie)
+	}
+	// The server judges a request with an Authorization header on that alone and
+	// never falls back to the cookie, so sending one would defeat the session.
+	if got.authz != "" {
+		t.Errorf("expected no Authorization header, got %q", got.authz)
+	}
+}
+
+// Login has to work over plain http, where a cookie jar would discard the
+// Secure cookie a server behind https sets.
+func TestLogin_KeepsTheSessionFromTheCookie(t *testing.T) {
+	var body string
+	var sentCookie bool
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		b, _ := io.ReadAll(r.Body)
+		body = string(b)
+		_, err := r.Cookie(SessionCookie)
+		sentCookie = err == nil
+		http.SetCookie(w, &http.Cookie{Name: SessionCookie, Value: "fresh", Path: "/", HttpOnly: true, Secure: true})
+		w.WriteHeader(http.StatusOK)
+		io.WriteString(w, `{"user":{"id":1},"has_password":true}`)
+	}))
+	t.Cleanup(srv.Close)
+
+	c := NewClient(srv.URL)
+	c.SetSession("stale")
+	token, err := c.Login("niklas", "correct horse")
+	if err != nil {
+		t.Fatalf("login: %v", err)
+	}
+	if token != "fresh" || !c.HasSession() {
+		t.Errorf("expected the new token to be kept, got %q", token)
+	}
+	if body != `{"username":"niklas","password":"correct horse"}` {
+		t.Errorf("unexpected body %q", body)
+	}
+	if sentCookie {
+		t.Error("a stale session must not ride along on the login that replaces it")
+	}
+}
+
+func TestLogin_RefusalCarriesTheServersWords(t *testing.T) {
+	c, _ := stub(t, http.StatusUnauthorized, `{"error":"invalid username or password"}`)
+	_, err := c.Login("niklas", "wrong")
+	if !IsUnauthorized(err) || !strings.Contains(err.Error(), "invalid username or password") {
+		t.Errorf("expected the server's 401 message, got %v", err)
+	}
+
+	c, _ = stub(t, http.StatusTooManyRequests, `{"error":"too many attempts"}`)
+	if _, err := c.Login("niklas", "wrong"); err == nil || IsUnauthorized(err) {
+		t.Errorf("a rate limit is not an authentication failure, got %v", err)
+	}
+}
+
+func TestLogin_NoCookieIsAnError(t *testing.T) {
+	c, _ := stub(t, http.StatusOK, `{}`)
+	if _, err := c.Login("niklas", "pw"); err == nil {
+		t.Error("a 200 without a session cookie is not a sign-in")
+	}
+}
+
+func TestLogout_ForgetsTheSession(t *testing.T) {
+	c, got := stub(t, http.StatusNoContent, ``)
+	if err := c.Logout(); err != nil {
+		t.Fatalf("logout: %v", err)
+	}
+	if got.method != "POST" || got.path != "/api/logout" || got.cookie != "test-session" {
+		t.Errorf("unexpected request %s %s cookie=%q", got.method, got.path, got.cookie)
+	}
+	if c.HasSession() {
+		t.Error("the session should be gone locally")
+	}
+}
+
+func TestIsUnauthorized(t *testing.T) {
+	if !IsUnauthorized(&StatusError{Code: 401}) {
+		t.Error("a 401 is unauthorized")
+	}
+	if IsUnauthorized(&StatusError{Code: 403}) || IsUnauthorized(errors.New("x")) || IsUnauthorized(nil) {
+		t.Error("only a 401 means the session is refused; a 403 is a permission")
 	}
 }
 
@@ -107,23 +195,26 @@ func TestClient_IncidentEndpoints(t *testing.T) {
 func TestListIncidents_Filters(t *testing.T) {
 	tests := []struct {
 		name     string
+		teamID   int64
 		status   string
 		archived bool
 		snoozed  bool
 		limit    int
 		want     string
 	}{
-		{"default is the open queue", "", false, false, 0, ""},
+		{"default is the open queue", 0, "", false, false, 0, ""},
-		{"status", "triggered", false, false, 0, "status=triggered"},
+		{"status", 0, "triggered", false, false, 0, "status=triggered"},
-		{"archived", "resolved", true, false, 0, "archived=true&status=resolved"},
+		{"archived", 0, "resolved", true, false, 0, "archived=true&status=resolved"},
-		{"snoozed", "", false, true, 0, "snoozed=true"},
+		{"snoozed", 0, "", false, true, 0, "snoozed=true"},
-		{"limit", "", false, false, 500, "limit=500"},
+		{"limit", 0, "", false, false, 500, "limit=500"},
+		{"one team", 4, "", false, false, 0, "team_id=4"},
+		{"no team means all of them", 0, "triggered", false, false, 0, "status=triggered"},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			c, got := stub(t, http.StatusOK, `[]`)
-			if _, err := c.ListIncidents(tt.status, tt.archived, tt.snoozed, tt.limit); err != nil {
+			if _, err := c.ListIncidents(tt.teamID, tt.status, tt.archived, tt.snoozed, tt.limit); err != nil {
 				t.Fatalf("list: %v", err)
 			}
 			if got.query != tt.want {
@@ -166,6 +257,31 @@ func TestClient_RequestBodies(t *testing.T) {
 		}
 	})
 
+	// replace is what takes a day off its current holder, so it has to reach the
+	// wire when asked for — and stay off it when not.
+	t.Run("assign schedule", func(t *testing.T) {
+		c, got := stub(t, http.StatusCreated, `[]`)
+		if _, err := c.AssignSchedule(9, 3, []string{"2026-07-27"}, false); err != nil {
+			t.Fatalf("assign: %v", err)
+		}
+		if got.method != "POST" || got.path != "/api/teams/9/schedule" {
+			t.Errorf("expected POST /api/teams/9/schedule, got %s %s", got.method, got.path)
+		}
+		if got.body != `{"user_id":3,"dates":["2026-07-27"]}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
+	t.Run("assign schedule with replace", func(t *testing.T) {
+		c, got := stub(t, http.StatusCreated, `[]`)
+		if _, err := c.AssignSchedule(9, 3, []string{"2026-07-27"}, true); err != nil {
+			t.Fatalf("assign: %v", err)
+		}
+		if got.body != `{"user_id":3,"dates":["2026-07-27"],"replace":true}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
 	t.Run("set notify target", func(t *testing.T) {
 		c, got := stub(t, http.StatusOK, `{}`)
 		if _, err := c.SetUserNotifyTarget(3, "terdut-niklas"); err != nil {
@@ -224,15 +340,91 @@ func TestClient_ErrorWithoutBody(t *testing.T) {
 	}
 }
 
-// Nobody on call is a normal state, not a failure.
+// Nobody on call is a normal state, not a failure: the server answers with an
-func TestGetCurrentOnCall_404IsNotAnError(t *testing.T) {
+// empty list, one entry per team that has somebody scheduled.
-	c, _ := stub(t, http.StatusNotFound, `{"error":"no one is on call today"}`)
+func TestGetCurrentOnCall_ListsOnePerTeam(t *testing.T) {
-	entry, err := c.GetCurrentOnCall()
+	c, got := stub(t, http.StatusOK, `[
+		{"id":1,"team_id":1,"team_name":"Ops","user_id":5,"username":"alice","date":"2026-09-23"},
+		{"id":2,"team_id":2,"team_name":"Dev","user_id":6,"username":"bob","date":"2026-09-23"}]`)
+	entries, err := c.GetCurrentOnCall()
 	if err != nil {
-		t.Fatalf("expected no error, got %v", err)
+		t.Fatalf("on call: %v", err)
 	}
-	if entry != nil {
+	if got.path != "/api/schedule/current" {
-		t.Errorf("expected nil entry, got %+v", entry)
+		t.Errorf("unexpected path %q", got.path)
+	}
+	if len(entries) != 2 || entries[0].TeamName != "Ops" || entries[1].Username != "bob" {
+		t.Errorf("unexpected entries %+v", entries)
+	}
+
+	c, _ = stub(t, http.StatusOK, `[]`)
+	if entries, err := c.GetCurrentOnCall(); err != nil || len(entries) != 0 {
+		t.Errorf("expected no entries and no error, got %v, %v", entries, err)
+	}
+}
+
+// Schedules belong to a team, so every call for one has to say which.
+func TestSchedule_IsPerTeam(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `[]`)
+	if _, err := c.GetSchedule(7, "2026-09-21", "2026-09-27"); err != nil {
+		t.Fatalf("get schedule: %v", err)
+	}
+	if got.path != "/api/teams/7/schedule" || got.query != "from=2026-09-21&to=2026-09-27" {
+		t.Errorf("unexpected request %s?%s", got.path, got.query)
+	}
+
+	c, got = stub(t, http.StatusNoContent, ``)
+	if err := c.DeleteScheduleEntry(7, 12); err != nil {
+		t.Fatalf("delete: %v", err)
+	}
+	if got.method != "DELETE" || got.path != "/api/teams/7/schedule/12" {
+		t.Errorf("unexpected request %s %s", got.method, got.path)
+	}
+}
+
+func TestTeams(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `[{"id":3,"name":"Ops","created_at":"2026-09-20T10:00:00Z","role":"owner"}]`)
+	teams, err := c.ListTeams()
+	if err != nil {
+		t.Fatalf("list teams: %v", err)
+	}
+	if got.path != "/api/teams" || len(teams) != 1 || teams[0].Role != RoleOwner || teams[0].Name != "Ops" {
+		t.Errorf("unexpected %s %+v", got.path, teams)
+	}
+
+	c, got = stub(t, http.StatusOK, `[{"team_id":3,"user_id":5,"username":"alice","role":"member"}]`)
+	members, err := c.ListTeamMembers(3)
+	if err != nil {
+		t.Fatalf("list members: %v", err)
+	}
+	if got.path != "/api/teams/3/members" || len(members) != 1 || members[0].UserID != 5 {
+		t.Errorf("unexpected %s %+v", got.path, members)
+	}
+}
+
+// A server that predates teams has no /api/teams, and the TUI recognises one by
+// that 404, so it must come back as a StatusError carrying the code.
+func TestListTeams_OldServerIs404(t *testing.T) {
+	c, _ := stub(t, http.StatusNotFound, `{"error":"not found"}`)
+	_, err := c.ListTeams()
+	var se *StatusError
+	if !errors.As(err, &se) || se.Code != http.StatusNotFound {
+		t.Errorf("expected a 404 StatusError, got %v", err)
+	}
+}
+
+func TestUser_DecodesAdminAndDisabled(t *testing.T) {
+	var u User
+	if err := json.Unmarshal([]byte(
+		`{"id":1,"username":"a","is_admin":true,"disabled_at":"2026-09-22T08:00:00Z"}`), &u); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if !u.IsAdmin || !u.IsDisabled() {
+		t.Errorf("expected an admin who is disabled, got %+v", u)
+	}
+	var other User
+	if err := json.Unmarshal([]byte(`{"id":2,"username":"b","is_admin":false}`), &other); err != nil || other.IsDisabled() {
+		t.Errorf("a user with no disabled_at must not be disabled")
 	}
 }
 
@@ -317,7 +509,7 @@ func TestAlert_DecodesIncidentLink(t *testing.T) {
 
 func TestListAlerts_ArchivedFilter(t *testing.T) {
 	c, got := stub(t, http.StatusOK, `[]`)
-	if _, err := c.ListAlerts("", true, 50); err != nil {
+	if _, err := c.ListAlerts(0, "", true, 50); err != nil {
 		t.Fatalf("list alerts: %v", err)
 	}
 	if got.path != "/api/alerts" || got.query != "archived=true&limit=50" {
@@ -341,3 +533,52 @@ func TestIncidentStats_NullAveragesStayNil(t *testing.T) {
 		t.Errorf("expected nil averages, got %v / %v", stats.MTTASeconds, stats.MTTRSeconds)
 	}
 }
+
+func TestClient_Me(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `{"user":{"id":3,"username":"erik"},"has_password":true}`)
+	me, err := c.Me()
+	if err != nil {
+		t.Fatalf("me: %v", err)
+	}
+	if got.method != http.MethodGet || got.path != "/api/me" {
+		t.Errorf("expected GET /api/me, got %s %s", got.method, got.path)
+	}
+	if me.User.ID != 3 || !me.HasPassword {
+		t.Errorf("unexpected decode %+v", me)
+	}
+}
+
+func TestClient_SetPassword(t *testing.T) {
+	c, got := stub(t, http.StatusNoContent, ``)
+	if err := c.SetPassword(2, "a brand new secret", ""); err != nil {
+		t.Fatalf("set password: %v", err)
+	}
+	if got.method != http.MethodPut || got.path != "/api/users/2/password" {
+		t.Errorf("expected PUT /api/users/2/password, got %s %s", got.method, got.path)
+	}
+	// Setting someone else's password carries no current_password at all,
+	// rather than an empty one.
+	if got.body != `{"password":"a brand new secret"}` {
+		t.Errorf("unexpected body %s", got.body)
+	}
+
+	c, got = stub(t, http.StatusNoContent, ``)
+	c.SetPassword(1, "a brand new secret", "the old one")
+	if !strings.Contains(got.body, `"current_password":"the old one"`) {
+		t.Errorf("current password missing from %s", got.body)
+	}
+}
+
+// Older servers have no /api/me; the caller tells that apart by the status
+// code, so the typed error has to carry it.
+func TestClient_StatusErrorKeepsCodeAndMessage(t *testing.T) {
+	c, _ := stub(t, http.StatusNotFound, `404 page not found`)
+	_, err := c.Me()
+	var se *StatusError
+	if !errors.As(err, &se) || se.Code != http.StatusNotFound {
+		t.Fatalf("expected a 404 StatusError, got %v", err)
+	}
+	if err.Error() != "server returned 404" {
+		t.Errorf("message changed: %q", err.Error())
+	}
+}

internal/api/types.go

@@ -7,6 +7,8 @@ import "time"
 // alert belongs to.
 type Alert struct {
 	ID           int64             `json:"id"`
+	TeamID       int64             `json:"team_id"`
+	TeamName     string            `json:"team_name,omitempty"`
 	Fingerprint  string            `json:"fingerprint"`
 	Name         string            `json:"name"`
 	Status       string            `json:"status"`
@@ -25,7 +27,8 @@ type Alert struct {
 
 	// ResolutionSource records why a resolved alert left the firing state:
 	// "alertmanager" for a real resolved webhook, "expiry" when the server
-	// inferred it after the alert stopped being refreshed.
+	// inferred it after the alert stopped being refreshed, "deadman" for a
+	// dead man's switch that came back. Treat the value set as open.
 	ResolutionSource *string `json:"resolution_source,omitempty"`
 }
 
@@ -41,6 +44,8 @@ const (
 // groupKey Alertmanager computed from the operator's group_by configuration.
 type Incident struct {
 	ID          int64             `json:"id"`
+	TeamID      int64             `json:"team_id"`
+	TeamName    string            `json:"team_name,omitempty"`
 	GroupKey    string            `json:"group_key"`
 	Title       string            `json:"title"`
 	GroupLabels map[string]string `json:"group_labels"`
@@ -63,10 +68,17 @@ type Incident struct {
 
 	ResolvedAt *time.Time `json:"resolved_at,omitempty"`
 
-	// ResolutionSource is "alerts" when every alert stopped firing, or "manual"
+	// ResolutionSource is "alerts" when every alert stopped firing, "manual"
-	// when a person closed it. Treat the value set as open.
+	// when a person closed it, or "recovered" when a dead man's switch came back.
+	// Treat the value set as open.
 	ResolutionSource *string `json:"resolution_source,omitempty"`
 
+	// EscalationLevel is how far up the team's escalation ladder the incident has
+	// climbed (0 = not escalated). EscalationDueAt is when the next step fires,
+	// and is nil once the ladder is exhausted or the incident is acknowledged.
+	EscalationLevel int        `json:"escalation_level"`
+	EscalationDueAt *time.Time `json:"escalation_due_at,omitempty"`
+
 	ArchivedAt *time.Time `json:"archived_at,omitempty"`
 
 	// Alerts is populated by GET /api/incidents/{id} only.
@@ -96,6 +108,9 @@ const (
 	EventResolved       = "resolved"
 	EventNote           = "note"
 
+	// Written when a team's dead man's switch stops reporting.
+	EventDeadmanSilent = "deadman_silent"
+
 	// Written by the server's notifier from the delivery result, not at enqueue.
 	// Detail carries the notification kind ("triggered", "reminder", "resolved"),
 	// and on a failure the reason after it. An absent user means the page went to
@@ -154,6 +169,8 @@ type DayStat struct {
 
 type ScheduleEntry struct {
 	ID        int64     `json:"id"`
+	TeamID    int64     `json:"team_id"`
+	TeamName  string    `json:"team_name,omitempty"`
 	UserID    int64     `json:"user_id"`
 	Username  string    `json:"username"`
 	Date      string    `json:"date"` // YYYY-MM-DD
@@ -166,6 +183,14 @@ type User struct {
 	Email     string    `json:"email"`
 	CreatedAt time.Time `json:"created_at"`
 
+	// IsAdmin marks a system administrator: the only kind of user who can create
+	// or delete users and act on other people's passwords and keys.
+	IsAdmin bool `json:"is_admin"`
+
+	// DisabledAt is set when an administrator has disabled the account. A
+	// disabled user cannot sign in or use their keys.
+	DisabledAt *time.Time `json:"disabled_at,omitempty"`
+
 	// NtfyTopic is where this user's push notifications go. Nil and empty mean
 	// the same thing — no topic of their own — because the server stores a blank
 	// string as NULL. Their incidents fall back to the server's shared fallback
@@ -182,6 +207,40 @@ func (u User) Topic() string {
 	return *u.NtfyTopic
 }
 
+// IsDisabled reports whether the account has been disabled.
+func (u User) IsDisabled() bool { return u.DisabledAt != nil }
+
+// Me is GET /api/me: the caller, and whether they can sign in to the web UI.
+type Me struct {
+	User        User `json:"user"`
+	HasPassword bool `json:"has_password"`
+}
+
+// Team roles.
+const (
+	RoleOwner  = "owner"
+	RoleMember = "member"
+)
+
+// Team is a group that owns integrations, incidents, a schedule and an
+// escalation ladder. Role is the caller's role in it, and is only present on
+// the caller's own team lists (GET /api/teams).
+type Team struct {
+	ID        int64     `json:"id"`
+	Name      string    `json:"name"`
+	CreatedAt time.Time `json:"created_at"`
+	Role      string    `json:"role,omitempty"`
+}
+
+// TeamMember is one person's membership of a team.
+type TeamMember struct {
+	TeamID   int64     `json:"team_id"`
+	UserID   int64     `json:"user_id"`
+	Username string    `json:"username"`
+	Role     string    `json:"role"`
+	JoinedAt time.Time `json:"joined_at"`
+}
+
 type APIKey struct {
 	ID         int64      `json:"id"`
 	UserID     int64      `json:"user_id"`

internal/config/config.go

@@ -13,14 +13,26 @@ const defaultRefreshInterval = 30 * time.Second
 
 type Config struct {
 	ServerURL       string
-	APIKey          string
+	Username        string // optional, prefills the sign-in form
 	RefreshInterval time.Duration
+	Theme           string
+
+	// LegacyAPIKey is set when the file still has an `api_key`. The TUI signs in
+	// with a user account now and ignores it; this is only so it can say so.
+	LegacyAPIKey bool
+
+	// Team is the team to start on, by name or id. Empty shows every team the
+	// key's user belongs to.
+	Team string
 }
 
 type rawConfig struct {
 	ServerURL       string `yaml:"server_url"`
-	APIKey          string `yaml:"api_key"`
+	Username        string `yaml:"username,omitempty"`
+	APIKey          string `yaml:"api_key,omitempty"`          // no longer used; see Config.LegacyAPIKey
 	RefreshInterval int    `yaml:"refresh_interval,omitempty"` // seconds
+	Theme           string `yaml:"theme,omitempty"`
+	Team            string `yaml:"team,omitempty"`
 }
 
 func Load() (*Config, error) {
@@ -33,7 +45,7 @@ func Load() (*Config, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {
 		if os.IsNotExist(err) {
-			return nil, fmt.Errorf("config file not found at %s\n\nCreate it with:\n  server_url: https://terdut.example.com\n  api_key: <your-api-key>", path)
+			return nil, fmt.Errorf("config file not found at %s\n\nCreate it with:\n  server_url: https://terdut.example.com\n  username: <your-username>  # optional, prefills the sign-in form\n  theme: gruvbox-dark  # optional\n  team: Ops            # optional, team to start on", path)
 		}
 		return nil, fmt.Errorf("cannot read config file: %w", err)
 	}
@@ -46,9 +58,6 @@ func Load() (*Config, error) {
 	if raw.ServerURL == "" {
 		return nil, fmt.Errorf("config: 'server_url' is required")
 	}
-	if raw.APIKey == "" {
-		return nil, fmt.Errorf("config: 'api_key' is required")
-	}
 
 	interval := defaultRefreshInterval
 	if raw.RefreshInterval > 0 {
@@ -57,7 +66,10 @@ func Load() (*Config, error) {
 
 	return &Config{
 		ServerURL:       raw.ServerURL,
-		APIKey:          raw.APIKey,
+		Username:        raw.Username,
+		LegacyAPIKey:    raw.APIKey != "",
 		RefreshInterval: interval,
+		Theme:           raw.Theme,
+		Team:            raw.Team,
 	}, nil
 }

internal/config/config_test.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func writeConfig(t *testing.T, body string) {
+	t.Helper()
+	dir := t.TempDir()
+	t.Setenv("XDG_CONFIG_HOME", dir)
+	if err := os.MkdirAll(filepath.Join(dir, "terdut-tui"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "terdut-tui", "config.yaml"), []byte(body), 0o600); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestLoad_TeamIsOptional(t *testing.T) {
+	writeConfig(t, "server_url: https://terdut.example.com\n")
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("load: %v", err)
+	}
+	if cfg.Team != "" {
+		t.Errorf("expected no default team, got %q", cfg.Team)
+	}
+
+	writeConfig(t, "server_url: https://terdut.example.com\nteam: Ops\n")
+	cfg, err = Load()
+	if err != nil {
+		t.Fatalf("load: %v", err)
+	}
+	if cfg.Team != "Ops" {
+		t.Errorf("expected team Ops, got %q", cfg.Team)
+	}
+}
+
+// Signing in replaced the API key, so a config that has only a server URL is
+// complete, and one that still carries an api_key is noted rather than refused.
+func TestLoad_NoAPIKeyNeeded(t *testing.T) {
+	writeConfig(t, "server_url: https://terdut.example.com\nusername: niklas\n")
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("load: %v", err)
+	}
+	if cfg.Username != "niklas" || cfg.LegacyAPIKey {
+		t.Errorf("unexpected config %+v", cfg)
+	}
+
+	writeConfig(t, "server_url: https://terdut.example.com\napi_key: old\n")
+	cfg, err = Load()
+	if err != nil {
+		t.Fatalf("a leftover api_key must not stop the TUI starting: %v", err)
+	}
+	if !cfg.LegacyAPIKey {
+		t.Error("expected the leftover api_key to be noted")
+	}
+}

internal/session/session.go

@@ -0,0 +1,98 @@
+// Package session keeps the signed-in session between runs, so the TUI does not
+// ask for a password every time it starts.
+//
+// What is stored is the server's session token, not the password: it is what the
+// web UI keeps in a cookie, it expires on the server's schedule (30 days, sliding
+// with use) and signing out or a password change ends it. It is still a
+// credential, so the file is readable by its owner only.
+package session
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+type file struct {
+	ServerURL string `json:"server_url"`
+	Token     string `json:"token"`
+}
+
+func path() (string, error) {
+	dir, err := os.UserConfigDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(dir, "terdut-tui", "session.json"), nil
+}
+
+// normalise makes two spellings of one server compare equal.
+func normalise(serverURL string) string {
+	return strings.TrimRight(serverURL, "/")
+}
+
+// Load returns the saved token for serverURL, or "" when there is none. A session
+// saved for a different server is not offered to this one, and an unreadable file
+// is the same as no file: the worst outcome is being asked to sign in.
+func Load(serverURL string) string {
+	p, err := path()
+	if err != nil {
+		return ""
+	}
+	data, err := os.ReadFile(p)
+	if err != nil {
+		return ""
+	}
+	var f file
+	if json.Unmarshal(data, &f) != nil || normalise(f.ServerURL) != normalise(serverURL) {
+		return ""
+	}
+	return f.Token
+}
+
+// Save stores the token for serverURL, replacing whatever was there.
+func Save(serverURL, token string) error {
+	p, err := path()
+	if err != nil {
+		return err
+	}
+	if err := os.MkdirAll(filepath.Dir(p), 0o700); err != nil {
+		return err
+	}
+	data, err := json.Marshal(file{ServerURL: normalise(serverURL), Token: token})
+	if err != nil {
+		return err
+	}
+	// Written beside the target and renamed over it, so a crash cannot leave a
+	// half-written token, and created 0600 so it is never briefly world-readable.
+	tmp, err := os.CreateTemp(filepath.Dir(p), ".session-*")
+	if err != nil {
+		return err
+	}
+	defer os.Remove(tmp.Name())
+	if err := os.Chmod(tmp.Name(), 0o600); err != nil {
+		tmp.Close()
+		return err
+	}
+	if _, err := tmp.Write(data); err != nil {
+		tmp.Close()
+		return err
+	}
+	if err := tmp.Close(); err != nil {
+		return err
+	}
+	return os.Rename(tmp.Name(), p)
+}
+
+// Clear forgets the saved session. Having none to forget is not an error.
+func Clear() error {
+	p, err := path()
+	if err != nil {
+		return err
+	}
+	if err := os.Remove(p); err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	return nil
+}

internal/session/session_test.go

@@ -0,0 +1,92 @@
+package session
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func isolate(t *testing.T) {
+	t.Helper()
+	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
+}
+
+func TestSaveThenLoad(t *testing.T) {
+	isolate(t)
+	if got := Load("https://terdut.example.com"); got != "" {
+		t.Fatalf("expected no session yet, got %q", got)
+	}
+	if err := Save("https://terdut.example.com", "tok"); err != nil {
+		t.Fatalf("save: %v", err)
+	}
+	if got := Load("https://terdut.example.com"); got != "tok" {
+		t.Errorf("expected tok, got %q", got)
+	}
+	// A trailing slash is the same server.
+	if got := Load("https://terdut.example.com/"); got != "tok" {
+		t.Errorf("a trailing slash should not lose the session, got %q", got)
+	}
+}
+
+// A token is only ever valid for the server that issued it; offering it to a
+// different one would send a credential to somebody it was never meant for.
+func TestLoadIgnoresAnotherServersSession(t *testing.T) {
+	isolate(t)
+	if err := Save("https://a.example.com", "tok"); err != nil {
+		t.Fatal(err)
+	}
+	if got := Load("https://b.example.com"); got != "" {
+		t.Errorf("a session for another server must not be reused, got %q", got)
+	}
+}
+
+func TestSaveIsOwnerOnly(t *testing.T) {
+	isolate(t)
+	if err := Save("https://a.example.com", "tok"); err != nil {
+		t.Fatal(err)
+	}
+	p, _ := path()
+	info, err := os.Stat(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if perm := info.Mode().Perm(); perm != 0o600 {
+		t.Errorf("the session file holds a credential and must be 0600, got %o", perm)
+	}
+	entries, _ := os.ReadDir(filepath.Dir(p))
+	for _, e := range entries {
+		if e.Name() != "session.json" {
+			t.Errorf("a temporary file was left behind: %s", e.Name())
+		}
+	}
+}
+
+func TestClear(t *testing.T) {
+	isolate(t)
+	if err := Clear(); err != nil {
+		t.Errorf("clearing nothing is not an error, got %v", err)
+	}
+	if err := Save("https://a.example.com", "tok"); err != nil {
+		t.Fatal(err)
+	}
+	if err := Clear(); err != nil {
+		t.Fatalf("clear: %v", err)
+	}
+	if got := Load("https://a.example.com"); got != "" {
+		t.Errorf("expected the session gone, got %q", got)
+	}
+}
+
+func TestLoadToleratesGarbage(t *testing.T) {
+	isolate(t)
+	p, _ := path()
+	if err := os.MkdirAll(filepath.Dir(p), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(p, []byte("{not json"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if got := Load("https://a.example.com"); got != "" {
+		t.Errorf("an unreadable file means no session, got %q", got)
+	}
+}

internal/theme/builtin.go

@@ -0,0 +1,88 @@
+package theme
+
+import "sort"
+
+// The gruvbox palettes, in the author's original names. Dark uses the bright
+// variants and light the faded ones, which is what keeps each readable against
+// its own background.
+const (
+	darkBg0  = "#282828"
+	darkFg1  = "#ebdbb2"
+	darkGray = "#928374"
+	darkRed  = "#fb4934"
+	darkGrn  = "#b8bb26"
+	darkYel  = "#fabd2f"
+	darkBlu  = "#83a598"
+	darkAqua = "#8ec07c"
+	darkOrng = "#fe8019"
+
+	lightBg0  = "#fbf1c7"
+	lightFg1  = "#3c3836"
+	lightFg4  = "#7c6f64"
+	lightRed  = "#9d0006"
+	lightGrn  = "#79740e"
+	lightYel  = "#b57614"
+	lightBlu  = "#076678"
+	lightAqua = "#427b58"
+	lightOrng = "#af3a03"
+)
+
+// GruvboxDark is the default scheme. It assumes a dark terminal background:
+// themes colour foregrounds only, so the terminal supplies the canvas.
+var GruvboxDark = Theme{
+	Name: "gruvbox-dark",
+
+	Primary:   darkBlu,
+	OnPrimary: darkBg0,
+	Text:      darkFg1,
+	Muted:     darkGray,
+	Accent:    darkOrng,
+
+	Firing:   darkRed,
+	Resolved: darkGrn,
+	Error:    darkRed,
+
+	SevCritical: darkRed,
+	SevError:    darkOrng,
+	SevWarning:  darkYel,
+	SevInfo:     darkAqua,
+}
+
+// GruvboxLight is the same scheme against a light terminal background.
+var GruvboxLight = Theme{
+	Name: "gruvbox-light",
+
+	Primary:   lightBlu,
+	OnPrimary: lightBg0,
+	Text:      lightFg1,
+	Muted:     lightFg4,
+	Accent:    lightOrng,
+
+	Firing:   lightRed,
+	Resolved: lightGrn,
+	Error:    lightRed,
+
+	SevCritical: lightRed,
+	SevError:    lightOrng,
+	SevWarning:  lightYel,
+	SevInfo:     lightAqua,
+}
+
+// Default is the theme used when the config names none.
+var Default = GruvboxDark
+
+var builtins = map[string]Theme{
+	GruvboxDark.Name:  GruvboxDark,
+	GruvboxLight.Name: GruvboxLight,
+}
+
+// BuiltinNames lists the compiled-in themes, sorted, for error messages and
+// documentation.
+func BuiltinNames() []string {
+	names := make([]string, 0, len(builtins))
+	for name := range builtins {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	return names
+}

internal/theme/load.go

@@ -0,0 +1,196 @@
+package theme
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/charmbracelet/lipgloss"
+	"gopkg.in/yaml.v3"
+)
+
+// rawTheme is the on-disk form. Every token is a pointer so an absent key is
+// distinguishable from an empty one, which is what lets 'extends' overwrite
+// only what the file actually mentions.
+type rawTheme struct {
+	Extends *string `yaml:"extends"`
+
+	Primary   *string `yaml:"primary"`
+	OnPrimary *string `yaml:"on_primary"`
+	Text      *string `yaml:"text"`
+	Muted     *string `yaml:"muted"`
+	Accent    *string `yaml:"accent"`
+
+	Firing   *string `yaml:"firing"`
+	Resolved *string `yaml:"resolved"`
+	Error    *string `yaml:"error"`
+
+	SevCritical *string `yaml:"sev_critical"`
+	SevError    *string `yaml:"sev_error"`
+	SevWarning  *string `yaml:"sev_warning"`
+	SevInfo     *string `yaml:"sev_info"`
+}
+
+// binding ties a YAML key to its raw value and the field it fills, so parsing,
+// merging and the missing-token report all walk the same list.
+type binding struct {
+	key string
+	src *string
+	dst *lipgloss.Color
+}
+
+func bindings(r *rawTheme, t *Theme) []binding {
+	return []binding{
+		{"primary", r.Primary, &t.Primary},
+		{"on_primary", r.OnPrimary, &t.OnPrimary},
+		{"text", r.Text, &t.Text},
+		{"muted", r.Muted, &t.Muted},
+		{"accent", r.Accent, &t.Accent},
+		{"firing", r.Firing, &t.Firing},
+		{"resolved", r.Resolved, &t.Resolved},
+		{"error", r.Error, &t.Error},
+		{"sev_critical", r.SevCritical, &t.SevCritical},
+		{"sev_error", r.SevError, &t.SevError},
+		{"sev_warning", r.SevWarning, &t.SevWarning},
+		{"sev_info", r.SevInfo, &t.SevInfo},
+	}
+}
+
+// tokenKeys lists the colour keys a theme file may set, in the order they are
+// documented.
+func tokenKeys() []string {
+	bs := bindings(&rawTheme{}, &Theme{})
+	keys := make([]string, len(bs))
+	for i, b := range bs {
+		keys[i] = b.key
+	}
+	return keys
+}
+
+func isTokenKey(k string) bool {
+	if k == "extends" {
+		return true
+	}
+	for _, want := range tokenKeys() {
+		if k == want {
+			return true
+		}
+	}
+	return false
+}
+
+// Load resolves a theme by name. An empty name is the default; otherwise a file
+// in the user's themes directory wins over a built-in of the same name, so the
+// documented way to tweak a built-in is to shadow it rather than rename it.
+func Load(name string) (Theme, error) {
+	if name == "" {
+		return Default, nil
+	}
+
+	dir, err := os.UserConfigDir()
+	if err != nil {
+		// Built-ins do not need the disk, so a missing config directory only
+		// matters for user themes.
+		if t, ok := builtins[name]; ok {
+			return t, nil
+		}
+		return Theme{}, fmt.Errorf("cannot determine config directory: %w", err)
+	}
+
+	return loadFrom(filepath.Join(dir, "terdut-tui", "themes"), name)
+}
+
+func loadFrom(dir, name string) (Theme, error) {
+	if strings.ContainsAny(name, `/\`) || name == "." || name == ".." {
+		return Theme{}, fmt.Errorf("invalid theme name %q: a theme is a bare name, not a path", name)
+	}
+
+	path := filepath.Join(dir, name+".yaml")
+	data, err := os.ReadFile(path)
+	switch {
+	case err == nil:
+		return parse(name, data)
+	case !os.IsNotExist(err):
+		return Theme{}, fmt.Errorf("cannot read theme file %s: %w", path, err)
+	}
+
+	if t, ok := builtins[name]; ok {
+		return t, nil
+	}
+
+	return Theme{}, fmt.Errorf("unknown theme %q\n\nBuilt-in themes: %s\nOr define your own at %s",
+		name, strings.Join(BuiltinNames(), ", "), path)
+}
+
+func parse(name string, data []byte) (Theme, error) {
+	// Check the keys before decoding, so a typo'd token reports itself by name
+	// alongside the ones that would have worked rather than surfacing yaml's
+	// message about an internal Go type.
+	var keys map[string]yaml.Node
+	if err := yaml.Unmarshal(data, &keys); err != nil {
+		return Theme{}, fmt.Errorf("invalid theme %q: %w", name, err)
+	}
+	for k := range keys {
+		if !isTokenKey(k) {
+			return Theme{}, fmt.Errorf("theme %q: unknown key %q\n\nValid keys: extends, %s",
+				name, k, strings.Join(tokenKeys(), ", "))
+		}
+	}
+
+	var raw rawTheme
+	if err := yaml.Unmarshal(data, &raw); err != nil {
+		return Theme{}, fmt.Errorf("invalid theme %q: %w", name, err)
+	}
+
+	t := Theme{Name: name}
+	if raw.Extends != nil {
+		base, ok := builtins[*raw.Extends]
+		if !ok {
+			return Theme{}, fmt.Errorf("theme %q: 'extends' names unknown theme %q (built-ins: %s)",
+				name, *raw.Extends, strings.Join(BuiltinNames(), ", "))
+		}
+		t = base
+		t.Name = name
+	}
+
+	var missing []string
+	for _, b := range bindings(&raw, &t) {
+		if b.src == nil {
+			if raw.Extends == nil {
+				missing = append(missing, b.key)
+			}
+			continue
+		}
+		c, err := parseColor(*b.src)
+		if err != nil {
+			return Theme{}, fmt.Errorf("theme %q: %s: %w", name, b.key, err)
+		}
+		*b.dst = c
+	}
+
+	if len(missing) > 0 {
+		return Theme{}, fmt.Errorf("theme %q is missing %s\n\nEither set every token or add 'extends: %s' to inherit the rest",
+			name, strings.Join(missing, ", "), Default.Name)
+	}
+
+	return t, nil
+}
+
+var hexColor = regexp.MustCompile(`^#(?:[0-9a-fA-F]{3}|[0-9a-fA-F]{6})$`)
+
+// parseColor accepts what lipgloss can actually render: a hex value, or an ANSI
+// palette index for people who would rather follow their terminal's colours.
+func parseColor(s string) (lipgloss.Color, error) {
+	if hexColor.MatchString(s) {
+		return lipgloss.Color(s), nil
+	}
+	// strconv.Itoa round-trips to reject "+7" and "007", which lipgloss would
+	// pass to the terminal verbatim.
+	if n, err := strconv.Atoi(s); err == nil && n >= 0 && n <= 255 && strconv.Itoa(n) == s {
+		return lipgloss.Color(s), nil
+	}
+	return "", fmt.Errorf("invalid colour %q, want a hex value like \"#83a598\" or an ANSI index 0-255", s)
+}

internal/theme/load_test.go

@@ -0,0 +1,180 @@
+package theme
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// write drops a theme file into dir and returns the directory, so each test
+// works against its own themes directory rather than the user's.
+func write(t *testing.T, dir, name, body string) {
+	t.Helper()
+	if err := os.WriteFile(filepath.Join(dir, name+".yaml"), []byte(body), 0o644); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestLoad_EmptyNameIsTheDefault(t *testing.T) {
+	got, err := Load("")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got.Name != Default.Name {
+		t.Errorf("got theme %q, want %q", got.Name, Default.Name)
+	}
+}
+
+func TestLoadFrom_BuiltinsResolveWithoutAFile(t *testing.T) {
+	dir := t.TempDir()
+	for _, name := range BuiltinNames() {
+		got, err := loadFrom(dir, name)
+		if err != nil {
+			t.Fatalf("%s: unexpected error: %v", name, err)
+		}
+		if got.Name != name {
+			t.Errorf("got theme %q, want %q", got.Name, name)
+		}
+		if got.Primary == "" {
+			t.Errorf("%s: primary is unset", name)
+		}
+	}
+}
+
+func TestLoadFrom_ExtendsOverridesOnlyWhatIsNamed(t *testing.T) {
+	dir := t.TempDir()
+	write(t, dir, "mine", "extends: gruvbox-dark\nprimary: \"#d3869b\"\n")
+
+	got, err := loadFrom(dir, "mine")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got.Name != "mine" {
+		t.Errorf("got name %q, want %q", got.Name, "mine")
+	}
+	if got.Primary != "#d3869b" {
+		t.Errorf("got primary %q, want the override", got.Primary)
+	}
+	if got.Muted != GruvboxDark.Muted {
+		t.Errorf("got muted %q, want inherited %q", got.Muted, GruvboxDark.Muted)
+	}
+	if got.SevInfo != GruvboxDark.SevInfo {
+		t.Errorf("got sev_info %q, want inherited %q", got.SevInfo, GruvboxDark.SevInfo)
+	}
+}
+
+func TestLoadFrom_UserFileShadowsABuiltin(t *testing.T) {
+	dir := t.TempDir()
+	write(t, dir, "gruvbox-dark", "extends: gruvbox-dark\naccent: \"#fabd2f\"\n")
+
+	got, err := loadFrom(dir, "gruvbox-dark")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got.Accent != "#fabd2f" {
+		t.Errorf("got accent %q, want the shadowing file's value", got.Accent)
+	}
+}
+
+func TestLoadFrom_WithoutExtendsEveryTokenIsRequired(t *testing.T) {
+	dir := t.TempDir()
+	write(t, dir, "partial", "primary: \"#83a598\"\n")
+
+	_, err := loadFrom(dir, "partial")
+	if err == nil {
+		t.Fatal("expected an error for a theme missing tokens")
+	}
+	for _, want := range []string{"muted", "sev_info", "extends"} {
+		if !strings.Contains(err.Error(), want) {
+			t.Errorf("error should mention %q, got: %v", want, err)
+		}
+	}
+}
+
+func TestLoadFrom_CompleteThemeNeedsNoExtends(t *testing.T) {
+	dir := t.TempDir()
+	write(t, dir, "full", `primary: "#000001"
+on_primary: "#000002"
+text: "#000003"
+muted: "#000004"
+accent: "#000005"
+firing: "#000006"
+resolved: "#000007"
+error: "#000008"
+sev_critical: "#000009"
+sev_error: "#00000a"
+sev_warning: "#00000b"
+sev_info: "#00000c"
+`)
+
+	got, err := loadFrom(dir, "full")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if got.Primary != "#000001" || got.SevInfo != "#00000c" {
+		t.Errorf("tokens not applied: %+v", got)
+	}
+}
+
+func TestLoadFrom_Errors(t *testing.T) {
+	tests := []struct {
+		name string
+		file string // empty means: write no file at all
+		body string
+		want string
+	}{
+		{"unknown name", "", "", "unknown theme"},
+		{"unknown key", "typo", "extends: gruvbox-dark\nprimry: \"#83a598\"\n", `unknown key "primry"`},
+		{"unknown key lists the valid ones", "typo2", "primry: \"#83a598\"\n", "Valid keys: extends, primary,"},
+		{"bad colour", "bad", "extends: gruvbox-dark\nprimary: notacolour\n", "invalid colour"},
+		{"bad colour names the token", "badkey", "extends: gruvbox-dark\nsev_warning: \"#gggggg\"\n", "sev_warning"},
+		{"unknown base", "orphan", "extends: solarized\nprimary: \"#83a598\"\n", "unknown theme \"solarized\""},
+		{"malformed yaml", "broken", "extends: [\n", "invalid theme"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			dir := t.TempDir()
+			name := tt.file
+			if name == "" {
+				name = "missing"
+			} else {
+				write(t, dir, name, tt.body)
+			}
+
+			_, err := loadFrom(dir, name)
+			if err == nil {
+				t.Fatal("expected an error")
+			}
+			if !strings.Contains(err.Error(), tt.want) {
+				t.Errorf("error should mention %q, got: %v", tt.want, err)
+			}
+		})
+	}
+}
+
+func TestLoadFrom_RejectsPathsAsNames(t *testing.T) {
+	dir := t.TempDir()
+	for _, name := range []string{"../secrets", "sub/theme", ".."} {
+		if _, err := loadFrom(dir, name); err == nil {
+			t.Errorf("%q: expected an error", name)
+		}
+	}
+}
+
+func TestParseColor(t *testing.T) {
+	ok := []string{"#83a598", "#FFF", "#abc", "0", "15", "255"}
+	for _, s := range ok {
+		if _, err := parseColor(s); err != nil {
+			t.Errorf("parseColor(%q) = %v, want no error", s, err)
+		}
+	}
+
+	bad := []string{"", "83a598", "#ab", "#abcd", "#gggggg", "256", "-1", "+7", "007", "red"}
+	for _, s := range bad {
+		if _, err := parseColor(s); err == nil {
+			t.Errorf("parseColor(%q) = nil, want an error", s)
+		}
+	}
+}

internal/theme/theme.go

@@ -0,0 +1,32 @@
+// Package theme resolves the named colour scheme the TUI renders with. A theme
+// is a flat set of semantic tokens — roles like "muted" or "firing", never hues
+// — so a new scheme is a table of colours rather than a change to the views.
+package theme
+
+import "github.com/charmbracelet/lipgloss"
+
+// Theme is the palette the UI draws from. Every token is a foreground except
+// OnPrimary, which is the text colour for the two places that invert: the
+// active tab and the selected table row.
+//
+// Colours are truecolor hex; lipgloss downsamples them for 256- and 16-colour
+// terminals and drops them entirely under NO_COLOR, so themes do not carry
+// fallbacks of their own.
+type Theme struct {
+	Name string
+
+	Primary   lipgloss.Color // header, tab highlight, selection
+	OnPrimary lipgloss.Color // text drawn on a Primary background
+	Text      lipgloss.Color // default emphasis foreground
+	Muted     lipgloss.Color // secondary text, dividers, borders
+	Accent    lipgloss.Color // status line, acknowledged, by-day chart
+
+	Firing   lipgloss.Color
+	Resolved lipgloss.Color
+	Error    lipgloss.Color
+
+	SevCritical lipgloss.Color
+	SevError    lipgloss.Color
+	SevWarning  lipgloss.Color
+	SevInfo     lipgloss.Color
+}

internal/tui/login_test.go

@@ -0,0 +1,242 @@
+package tui
+
+import (
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/session"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// signedOut is a model with no session, so it starts on the sign-in form.
+func signedOut(serverURL string) Model {
+	m := NewModel(api.NewClient(serverURL), serverURL, time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	return m
+}
+
+func TestStartsOnTheFormWithoutASession(t *testing.T) {
+	m := signedOut("http://test")
+	if m.mode != modeLogin {
+		t.Fatalf("expected the sign-in form, got mode %v", m.mode)
+	}
+	if m.Init() != nil {
+		t.Error("with no session there is nothing to connect with yet")
+	}
+}
+
+func TestStartsConnectedWithASavedSession(t *testing.T) {
+	c := api.NewClient("http://test")
+	c.SetSession("saved")
+	m := NewModel(c, "http://test", time.Minute, theme.GruvboxDark)
+	if m.mode == modeLogin {
+		t.Fatal("a saved session should be tried before asking for a password")
+	}
+	if m.Init() == nil {
+		t.Error("expected the saved session to be tried on start")
+	}
+}
+
+func TestLoginForm_ChecksBothFieldsBeforeSending(t *testing.T) {
+	m := signedOut("http://test")
+	m, cmd := press(t, m, "enter")
+	if cmd != nil || m.loggingIn || !strings.Contains(m.loginErr, "username") {
+		t.Errorf("an empty form must not be sent, got err %q", m.loginErr)
+	}
+
+	m = typeInto(t, m, "niklas")
+	m, cmd = press(t, m, "enter")
+	if cmd != nil || m.loggingIn || !strings.Contains(m.loginErr, "password") {
+		t.Errorf("a missing password must not be sent, got err %q", m.loginErr)
+	}
+}
+
+func TestLoginForm_QIsTypedNotQuit(t *testing.T) {
+	m := signedOut("http://test")
+	m = typeInto(t, m, "quentin")
+	if got := m.loginInputs[loginUsername].Value(); got != "quentin" {
+		t.Errorf("q is a letter in a username, got %q", got)
+	}
+}
+
+// The whole flow against a server: type both fields, submit, and the session is
+// kept for the next run.
+func TestLogin_SignsInAndSavesTheSession(t *testing.T) {
+	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		b, _ := io.ReadAll(r.Body)
+		if r.URL.Path != "/api/login" || string(b) != `{"username":"niklas","password":"secret-pass"}` {
+			t.Errorf("unexpected request %s %s", r.URL.Path, b)
+		}
+		http.SetCookie(w, &http.Cookie{Name: api.SessionCookie, Value: "tok-1", Path: "/"})
+		io.WriteString(w, `{}`)
+	}))
+	t.Cleanup(srv.Close)
+
+	m := signedOut(srv.URL)
+	m = typeInto(t, m, "niklas")
+	m, _ = press(t, m, "tab")
+	m = typeInto(t, m, "secret-pass")
+	m, cmd := press(t, m, "enter")
+	if !m.loggingIn || cmd == nil {
+		t.Fatal("expected the sign-in to be under way")
+	}
+
+	msg := cmd()
+	if _, ok := msg.(loginDoneMsg); !ok {
+		t.Fatalf("expected loginDoneMsg, got %#v", msg)
+	}
+	if got := session.Load(srv.URL); got != "tok-1" {
+		t.Errorf("expected the session saved for next time, got %q", got)
+	}
+
+	next, connect := m.Update(msg)
+	m = next.(Model)
+	if m.mode != modeDashboard || m.loggingIn || connect == nil {
+		t.Errorf("expected to move on and connect, got mode %v", m.mode)
+	}
+	if m.loginInputs[loginPassword].Value() != "" {
+		t.Error("the password must not be kept once it has been used")
+	}
+}
+
+func TestLogin_WrongPasswordStaysOnTheForm(t *testing.T) {
+	m := signedOut("http://test")
+	m.loggingIn = true
+	next, _ := m.Update(loginErrMsg{&api.StatusError{Code: 401, Message: "invalid username or password"}})
+	m = next.(Model)
+	if m.mode != modeLogin || m.loggingIn {
+		t.Fatalf("expected to be back on the form, got mode %v", m.mode)
+	}
+	// The server gives the same 401 for an account with no password, so the
+	// message has to say so or it reads as a typo.
+	if !strings.Contains(m.loginErr, "no password") {
+		t.Errorf("expected the no-password hint, got %q", m.loginErr)
+	}
+	if m.loginFocus != loginPassword {
+		t.Error("focus should return to the password to retry")
+	}
+
+	next, _ = m.Update(loginErrMsg{&api.StatusError{Code: 429, Message: "slow down"}})
+	if got := next.(Model).loginErr; !strings.Contains(got, "too many") {
+		t.Errorf("expected the rate limit explained, got %q", got)
+	}
+	next, _ = m.Update(loginErrMsg{errors.New("dial tcp: refused")})
+	if got := next.(Model).loginErr; !strings.Contains(got, "refused") {
+		t.Errorf("other errors should show as they are, got %q", got)
+	}
+}
+
+// A 401 anywhere means the session is gone. Every action would fail the same
+// way, so it goes back to the form instead, without keeping the old data.
+func TestUnauthorized_ReturnsToTheFormAndDropsTheData(t *testing.T) {
+	for name, msg := range map[string]tea.Msg{
+		"refresh":  fetchDataErrMsg{&api.StatusError{Code: 401}},
+		"action":   actionErrMsg{&api.StatusError{Code: 401}},
+		"schedule": scheduleActionErrMsg{&api.StatusError{Code: 401}},
+		"connect":  connectErrMsg{&api.StatusError{Code: 401}},
+	} {
+		t.Run(name, func(t *testing.T) {
+			m := sized()
+			m.incidents = []api.Incident{{ID: 1, Title: "secret incident"}}
+			m.teams = twoTeams()
+			m.isAdmin = true
+			m.loginInputs[loginUsername].SetValue("niklas")
+
+			next, cmd := m.Update(msg)
+			m = next.(Model)
+			if m.mode != modeLogin || m.connected {
+				t.Fatalf("expected the sign-in form, got mode %v connected=%v", m.mode, m.connected)
+			}
+			if len(m.incidents) != 0 || len(m.teams) != 0 || m.isAdmin {
+				t.Error("the previous session's data must not survive into the next sign-in")
+			}
+			if cmd == nil {
+				t.Error("the dead session should be forgotten on disk")
+			}
+			if !strings.Contains(m.loginNote, "session") {
+				t.Errorf("expected the reason, got %q", m.loginNote)
+			}
+			if m.loginInputs[loginUsername].Value() != "niklas" || m.loginFocus != loginPassword {
+				t.Error("the username should be kept so only the password is retyped")
+			}
+			if strings.Contains(m.View(), "secret incident") {
+				t.Error("nothing from the old session may still be on screen")
+			}
+		})
+	}
+}
+
+// A 403 is a permission, not a lost session: it must not sign anybody out.
+func TestForbidden_DoesNotSignOut(t *testing.T) {
+	m := sized()
+	next, _ := m.Update(actionErrMsg{&api.StatusError{Code: 403, Message: "administrator access required"}})
+	if got := next.(Model); got.mode == modeLogin || !got.connected {
+		t.Error("a 403 must leave the session alone")
+	}
+}
+
+func TestLogout(t *testing.T) {
+	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
+	m := sized()
+	m.teams = twoTeams()
+	m.incidents = []api.Incident{{ID: 1}}
+	m, cmd := press(t, m, "L")
+	if cmd == nil {
+		t.Fatal("L should sign out")
+	}
+	next, _ := m.Update(logoutDoneMsg{})
+	m = next.(Model)
+	if m.mode != modeLogin || m.connected || len(m.incidents) != 0 {
+		t.Errorf("expected the form with nothing loaded, got mode %v", m.mode)
+	}
+	if !strings.Contains(m.loginNote, "signed out") {
+		t.Errorf("expected it to say so, got %q", m.loginNote)
+	}
+}
+
+// Signing out and in again must not leave two refresh timers running, each
+// re-arming itself for ever.
+func TestSigningInAgainStartsNoSecondTimer(t *testing.T) {
+	m := sized()
+	next, _ := m.Update(connectedMsg{})
+	m = next.(Model)
+	if !m.ticking {
+		t.Fatal("the first connect starts the refresh timer")
+	}
+	m = m.requireLogin("x")
+	if !m.ticking {
+		t.Fatal("the timer is still running while signed out")
+	}
+	// Ticks while signed out must do nothing rather than fetch.
+	if _, cmd := m.Update(tickMsg(time.Now())); cmd == nil {
+		t.Error("the timer keeps ticking")
+	}
+	if cmd := m.refreshActiveSection(); cmd != nil {
+		t.Error("no refresh should be attempted while signed out")
+	}
+}
+
+func TestLoginView_HidesThePasswordAndShowsTheNote(t *testing.T) {
+	m := signedOut("https://terdut.example.com").WithLogin("niklas", "api_key in config.yaml is no longer used")
+	if m.loginFocus != loginPassword {
+		t.Error("with the username known the cursor should start on the password")
+	}
+	m = typeInto(t, m, "hunter2-hunter2")
+	view := m.View()
+	for _, want := range []string{"Sign in to https://terdut.example.com", "niklas", "api_key in config.yaml is no longer used"} {
+		if !strings.Contains(view, want) {
+			t.Errorf("expected %q on the form:\n%s", want, view)
+		}
+	}
+	if strings.Contains(view, "hunter2") {
+		t.Error("the password must be masked")
+	}
+}

internal/tui/model.go

@@ -1,16 +1,23 @@
 package tui
 
 import (
+	"errors"
 	"fmt"
+	"net/http"
+	"slices"
+	"strconv"
+	"strings"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/session"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/help"
+	"github.com/charmbracelet/bubbles/key"
 	"github.com/charmbracelet/bubbles/table"
 	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // ── Enums ──────────────────────────────────────────────────────────────────
@@ -45,8 +52,29 @@ const (
 	modeAPIKeyCreate
 	modeAPIKeyReveal
 	modeAPIKeyRevokeByID
+	modePasswordSet
+	modeLogin
 )
 
+// Fields of the sign-in form, in tab order.
+const (
+	loginUsername = iota
+	loginPassword
+	loginFieldCount
+)
+
+// Fields of the set-password form, in tab order.
+const (
+	pwCurrent = iota
+	pwNew
+	pwRepeat
+	pwFieldCount
+)
+
+// minPasswordLen mirrors the server's rule, so a short password is refused
+// here rather than after a round trip.
+const minPasswordLen = 10
+
 type confirmTarget int
 
 const (
@@ -54,6 +82,7 @@ const (
 	confirmResolveIncident
 	confirmDeleteScheduleEntry
 	confirmDeleteUser
+	confirmReassignSchedule
 )
 
 // pickerTarget says what the user picker is choosing a person for.
@@ -90,8 +119,14 @@ func filterLabel(filter string) string {
 // ── Messages ───────────────────────────────────────────────────────────────
 
 // dashboard
-type connectedMsg struct{}
+type connectedMsg struct {
+	teams []api.Team
+	me    api.Me
+}
 type connectErrMsg struct{ err error }
+type loginDoneMsg struct{}
+type loginErrMsg struct{ err error }
+type logoutDoneMsg struct{}
 type incidentsFetchedMsg struct{ incidents []api.Incident }
 type archivedIncidentsFetchedMsg struct{ incidents []api.Incident }
 type incidentActionDoneMsg struct {
@@ -125,7 +160,11 @@ type detailStatsErrMsg struct{ err error }
 // schedule
 type scheduleFetchedMsg struct {
 	entries []api.ScheduleEntry
-	current *api.ScheduleEntry
+	current []api.ScheduleEntry
+}
+type pickerReadyMsg struct {
+	users   []api.User
+	members map[int64]bool
 }
 type scheduleFetchErrMsg struct{ err error }
 type scheduleActionErrMsg struct{ err error }
@@ -135,6 +174,8 @@ type usersFetchedMsg struct{ users []api.User }
 type apiKeyCreatedMsg struct{ key api.APIKey }
 type apiKeyRevokedMsg struct{}
 type userActionErrMsg struct{ err error }
+type meFetchedMsg struct{ me api.Me }
+type passwordSetMsg struct{ username string }
 
 // ── Model ──────────────────────────────────────────────────────────────────
 
@@ -143,16 +184,49 @@ type scheduleDay struct {
 	entry *api.ScheduleEntry
 }
 
+// pendingAssign is an on-call assignment held back by the reassignment
+// confirmation, because some of its dates belong to somebody else.
+type pendingAssign struct {
+	userID   int64
+	username string
+	dates    []string
+	// taken are the dates currently held by other people, and holders the
+	// distinct names holding them — both only for wording the prompt.
+	taken   []string
+	holders []string
+}
+
 type Model struct {
 	client          *api.Client
 	serverURL       string
 	refreshInterval time.Duration
+	theme           theme.Theme // kept to build a fresh model when signing out
 
 	activeSection section
 	mode          mode
 	width         int
 	height        int
 
+	// Teams. The server scopes everything to the caller's teams; activeTeamID
+	// narrows the incident and alert lists to one of them, 0 meaning all. The
+	// schedule is per team and always needs a concrete one, see scheduleTeam.
+	teams        []api.Team
+	activeTeamID int64
+	defaultTeam  string // config's `team`, resolved on connect
+	meID         int64
+	isAdmin      bool
+
+	// Sign-in. Until the server accepts a session the TUI is in modeLogin;
+	// loginNote is a line the form shows above the fields (why we are here), and
+	// ticking says the refresh timer is already running, so signing in again
+	// after signing out does not start a second one.
+	loginInputs [loginFieldCount]textinput.Model
+	loginFocus  int
+	loggingIn   bool
+	loginErr    string
+	loginNote   string
+	ticking     bool
+
 	// Connection & dashboard
 	connected     bool
 	loading       bool
@@ -194,6 +268,7 @@ type Model struct {
 	confirmTarget      confirmTarget
 	pendingDeleteID    int64 // note event ID
 	pendingDeleteEntry *api.ScheduleEntry
+	pendingAssign      *pendingAssign
 
 	// Stats
 	topAlerts []api.TopAlert
@@ -209,7 +284,7 @@ type Model struct {
 	scheduleWindow  time.Time
 	scheduleEntries []api.ScheduleEntry
 	scheduleDays    []scheduleDay
-	currentOnCall   *api.ScheduleEntry
+	currentOnCall   []api.ScheduleEntry
 	scheduleLoading bool
 	scheduleTable   table.Model
 
@@ -219,6 +294,9 @@ type Model struct {
 	userPickerTable  table.Model
 	pickerTarget     pickerTarget
 	pickerAssignWeek bool
+	// pickerMembers is who belongs to the schedule's team, so the schedule picker
+	// offers only people the server will accept. Nil until fetched.
+	pickerMembers map[int64]bool
 
 	// User management section
 	userManageTable   table.Model
@@ -230,29 +308,44 @@ type Model struct {
 	apiKeyRevokeInput textinput.Model
 	revealedAPIKey    api.APIKey
 
-	help help.Model
+	// Set-password form. The current-password field is shown only when the
-	keys keyMap
+	// target is the key's own user and already has a password, which is the
+	// one case the server asks for it; pwLoading covers the /api/me lookup
+	// that decides it.
+	pwInputs      [pwFieldCount]textinput.Model
+	pwFocus       int
+	pwNeedCurrent bool
+	pwLoading     bool
+
+	help   help.Model
+	keys   keyMap
+	styles Styles
 }
 
-func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration) Model {
+func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration, th theme.Theme) Model {
-	ts := defaultTableStyles()
+	st := newStyles(th)
+	ts := st.Table()
 
-	incidentT := table.New(table.WithFocused(true))
+	// Each table sees a key before the section's own handler does, so any
+	// key a section uses as an action must be taken out of that table's
+	// navigation bindings, or the cursor moves first and the action lands on
+	// a different row. See tableKeyMap.
+	incidentT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap("f")))
 	incidentT.SetStyles(ts)
 
-	alertT := table.New(table.WithFocused(true))
+	alertT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap("f")))
 	alertT.SetStyles(ts)
 
-	archivedT := table.New(table.WithFocused(true))
+	archivedT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap()))
 	archivedT.SetStyles(ts)
 
-	schedT := table.New(table.WithFocused(true))
+	schedT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap("d")))
 	schedT.SetStyles(ts)
 
-	pickerT := table.New(table.WithFocused(true))
+	pickerT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap()))
 	pickerT.SetStyles(ts)
 
-	manageT := table.New(table.WithFocused(true))
+	manageT := table.New(table.WithFocused(true), table.WithKeyMap(tableKeyMap("d", "k", "p")))
 	manageT.SetStyles(ts)
 
 	// Sized by the first tea.WindowSizeMsg; built here so it carries the default
@@ -287,6 +380,39 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 	revokeIn.Placeholder = "integer key ID"
 	revokeIn.CharLimit = 20
 
+	var pwIn [pwFieldCount]textinput.Model
+	for i, placeholder := range [pwFieldCount]string{"current password", "new password (min. 10 characters)", "repeat new password"} {
+		pwIn[i] = textinput.New()
+		pwIn[i].Placeholder = placeholder
+		pwIn[i].EchoMode = textinput.EchoPassword
+		pwIn[i].EchoCharacter = '•'
+		pwIn[i].CharLimit = 72 // bcrypt's limit; the server refuses longer
+	}
+
+	var loginIn [loginFieldCount]textinput.Model
+	for i, placeholder := range [loginFieldCount]string{"username", "password"} {
+		loginIn[i] = textinput.New()
+		loginIn[i].Placeholder = placeholder
+		loginIn[i].CharLimit = 72 // bcrypt's limit, and the server refuses longer passwords
+	}
+	loginIn[loginPassword].EchoMode = textinput.EchoPassword
+	loginIn[loginPassword].EchoCharacter = '•'
+	for i := range loginIn {
+		loginIn[i] = st.Input(loginIn[i])
+	}
+
+	for _, in := range []*textinput.Model{
+		&noteIn, &snoozeIn, &usernameIn, &emailIn, &topicIn, &keyNameIn, &revokeIn,
+	} {
+		*in = st.Input(*in)
+	}
+	for i := range pwIn {
+		pwIn[i] = st.Input(pwIn[i])
+	}
+
+	helpModel := help.New()
+	helpModel.Styles = st.Help()
+
 	now := time.Now().UTC()
 	today := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
 	weekday := int(today.Weekday())
@@ -295,12 +421,20 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 	}
 	window := today.AddDate(0, 0, -(weekday - 1))
 
+	startMode := modeDashboard
+	if client != nil && !client.HasSession() {
+		startMode = modeLogin
+		loginIn[loginUsername].Focus()
+	}
+
 	return Model{
 		client:            client,
 		serverURL:         serverURL,
 		refreshInterval:   refreshInterval,
+		theme:             th,
 		activeSection:     sectionIncidents,
-		mode:              modeDashboard,
+		mode:              startMode,
+		loginInputs:       loginIn,
 		loading:           true,
 		incidentFilter:    "",
 		alertFilter:       "firing",
@@ -319,58 +453,133 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 		ntfyTopicInput:    topicIn,
 		apiKeyNameInput:   keyNameIn,
 		apiKeyRevokeInput: revokeIn,
-		help:              help.New(),
+		pwInputs:          pwIn,
+		help:              helpModel,
 		keys:              keys,
+		styles:            st,
 	}
 }
 
+// WithDefaultTeam names the team to start on, by name or id. It is resolved
+// against the caller's teams once connected; an unknown one is reported and the
+// TUI starts on all teams.
+func (m Model) WithDefaultTeam(team string) Model {
+	m.defaultTeam = strings.TrimSpace(team)
+	return m
+}
+
+// WithLogin prefills the sign-in form's username and sets a note shown above it.
+func (m Model) WithLogin(username, note string) Model {
+	m.loginInputs[loginUsername].SetValue(username)
+	m.loginNote = note
+	if username != "" && m.mode == modeLogin {
+		// The name is known, so the only thing left to type is the password.
+		m.loginInputs[loginUsername].Blur()
+		m.loginFocus = loginPassword
+		m.loginInputs[loginPassword].Focus()
+	}
+	return m
+}
+
+// Init tries the saved session, if there is one; otherwise the sign-in form is
+// already showing and there is nothing to do until it is submitted.
 func (m Model) Init() tea.Cmd {
+	if m.mode == modeLogin {
+		return nil
+	}
 	return connectCmd(m.client)
 }
 
 // ── Table rebuilders ───────────────────────────────────────────────────────
 
-func defaultTableStyles() table.Styles {
+// tableKeyMap is the bubbles table keymap without the given keys.
-	s := table.DefaultStyles()
+//
-	s.Header = s.Header.Bold(true)
+// The table's defaults claim several letters -- k up, d half a page down, f a
-	s.Selected = s.Selected.
+// page down -- and the dashboard hands every key to the table before the
-		Foreground(lipgloss.Color("0")).
+// section's own handler reads the cursor. A letter that is both, like k for
-		Background(colorPrimary).
+// API keys in Users, therefore moved the cursor and then acted on the row it
-		Bold(true)
+// had moved to. Each table gives up the letters its section acts on; the
-	return s
+// arrow keys and the rest of the defaults are untouched.
+func tableKeyMap(reserved ...string) table.KeyMap {
+	km := table.DefaultKeyMap()
+	for _, b := range []*key.Binding{
+		&km.LineUp, &km.LineDown, &km.PageUp, &km.PageDown,
+		&km.HalfPageUp, &km.HalfPageDown, &km.GotoTop, &km.GotoBottom,
+	} {
+		var keep []string
+		for _, k := range b.Keys() {
+			if !slices.Contains(reserved, k) {
+				keep = append(keep, k)
+			}
+		}
+		b.SetKeys(keep...)
+	}
+	return km
+}
+
+// setRows replaces a table's rows and keeps its cursor in a state the rest of
+// this package can rely on: valid whenever the table has any rows at all.
+//
+// bubbles does not do that on its own. SetRows only clamps the cursor *down*
+// (`if m.cursor > len(rows)-1`), so setting zero rows drives it to -1 and
+// nothing ever brings it back — filling the table later leaves -1 in place,
+// because -1 is not greater than len-1. Every table here is rebuilt from empty
+// once at startup, when the first WindowSizeMsg arrives before any fetch has
+// returned, so without this every cursor is -1 until the user happens to press
+// up or down. Indexing a slice with that panics, which is exactly what
+// assigning an on-call week did.
+func setRows(t *table.Model, rows []table.Row) {
+	t.SetRows(rows)
+	if len(rows) > 0 && t.Cursor() < 0 {
+		t.SetCursor(0)
+	}
+}
+
+// setTable replaces a table's columns and rows together, for tables whose column
+// count can change (the Team column comes and goes). bubbles re-renders the
+// existing rows as soon as SetColumns is called, and a row with a different
+// number of cells than the new columns indexes past the end and panics, so the
+// old rows have to go first. The cursor is put back afterwards, since a refresh
+// must not send it to the top.
+func setTable(t *table.Model, cols []table.Column, rows []table.Row) {
+	cursor := t.Cursor()
+	t.SetRows(nil)
+	t.SetColumns(cols)
+	setRows(t, rows)
+	if cursor > 0 && cursor < len(rows) {
+		t.SetCursor(cursor)
+	}
 }
 
 func (m *Model) rebuildIncidentTable() {
-	m.incidentTable.SetColumns(incidentColumns(m.width))
+	setTable(&m.incidentTable, incidentColumns(m.width, m.showTeamColumn()), incidentRows(m.incidents, m.showTeamColumn()))
-	m.incidentTable.SetRows(incidentRows(m.incidents))
 	m.incidentTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildTable() {
-	m.alertTable.SetColumns(alertColumns(m.width))
+	setTable(&m.alertTable, alertColumns(m.width, m.showTeamColumn()), alertRows(m.alerts, m.showTeamColumn()))
-	m.alertTable.SetRows(alertRows(m.alerts))
 	m.alertTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildArchivedTable() {
-	m.archivedTable.SetColumns(incidentColumns(m.width))
+	setTable(&m.archivedTable, incidentColumns(m.width, m.showTeamColumn()), incidentRows(m.archivedIncidents, m.showTeamColumn()))
-	m.archivedTable.SetRows(incidentRows(m.archivedIncidents))
 	m.archivedTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildScheduleTable() {
 	m.scheduleTable.SetColumns(scheduleColumns(m.width))
-	m.scheduleTable.SetRows(scheduleRows(m.scheduleDays))
+	setRows(&m.scheduleTable, scheduleRows(m.scheduleDays))
 	m.scheduleTable.SetHeight(tableHeight(m.height, 10))
 }
 
 func (m *Model) rebuildUserPickerTable() {
 	m.userPickerTable.SetColumns(userPickerColumns(m.width))
-	rows := make([]table.Row, len(m.users))
+	pickable := m.pickerUsers()
-	for i, u := range m.users {
+	rows := make([]table.Row, len(pickable))
+	for i, u := range pickable {
 		rows[i] = table.Row{u.Username, u.Email}
 	}
-	m.userPickerTable.SetRows(rows)
+	setRows(&m.userPickerTable, rows)
 	m.userPickerTable.SetHeight(tableHeight(m.height, 10))
 }
 
@@ -382,9 +591,9 @@ func (m *Model) rebuildUserManageTable() {
 		if topic == "" {
 			topic = "—"
 		}
-		rows[i] = table.Row{u.Username, u.Email, topic, u.CreatedAt.UTC().Format("2006-01-02")}
+		rows[i] = table.Row{u.Username, u.Email, topic, userFlags(u), u.CreatedAt.UTC().Format("2006-01-02")}
 	}
-	m.userManageTable.SetRows(rows)
+	setRows(&m.userManageTable, rows)
 	m.userManageTable.SetHeight(tableHeight(m.height, 10))
 }
 
@@ -401,16 +610,16 @@ func (m *Model) refreshDetailContent() {
 		return
 	}
 	if m.mode == modeAlertDetail {
-		m.detailViewport.SetContent(buildAlertDetailContent(m.selectedAlert, m.width))
+		m.detailViewport.SetContent(buildAlertDetailContent(m.styles, m.selectedAlert, m.width))
 		return
 	}
 	m.detailViewport.SetContent(
-		buildIncidentDetailContent(m.selectedIncident, m.timeline, m.noteCursor, m.width))
+		buildIncidentDetailContent(m.styles, m.selectedIncident, m.timeline, m.noteCursor, m.width))
 }
 
 func (m *Model) refreshStatsContent() {
 	m.statsViewport.SetContent(
-		buildStatsContent(m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
+		buildStatsContent(m.styles, m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
 }
 
 func (m Model) statsViewportHeight() int {
@@ -432,6 +641,106 @@ func (m Model) detailViewportHeight() int {
 	return h
 }
 
+// showTeamColumn is whether list rows need saying which team they belong to:
+// only when they can come from more than one.
+func (m Model) showTeamColumn() bool {
+	return m.activeTeamID == 0 && len(m.teams) > 1
+}
+
+// activeTeam returns the team the lists are narrowed to.
+func (m Model) activeTeam() (api.Team, bool) {
+	return m.teamByID(m.activeTeamID)
+}
+
+func (m Model) teamByID(id int64) (api.Team, bool) {
+	for _, t := range m.teams {
+		if t.ID == id {
+			return t, true
+		}
+	}
+	return api.Team{}, false
+}
+
+// scheduleTeam is the team whose schedule the Schedule section shows. That is
+// the active team; with all teams showing it is the first one the caller owns,
+// else their first, because a rota belongs to one team and there is no
+// meaningful union to display.
+func (m Model) scheduleTeam() (api.Team, bool) {
+	if t, ok := m.activeTeam(); ok {
+		return t, true
+	}
+	for _, t := range m.teams {
+		if t.Role == api.RoleOwner {
+			return t, true
+		}
+	}
+	if len(m.teams) > 0 {
+		return m.teams[0], true
+	}
+	return api.Team{}, false
+}
+
+// canEditSchedule mirrors the server: writes need a team owner or an
+// administrator. Saying so up front beats a 403 after picking a user.
+func (m Model) canEditSchedule(t api.Team) bool {
+	return m.isAdmin || t.Role == api.RoleOwner
+}
+
+// canManageUser mirrors the server's self-or-admin rule for a user's password,
+// ntfy topic and API keys.
+func (m Model) canManageUser(u api.User) bool {
+	return m.isAdmin || u.ID == m.meID
+}
+
+// resolveTeam finds a team by id or, failing that, by name.
+func resolveTeam(teams []api.Team, want string) (api.Team, bool) {
+	if id, err := strconv.ParseInt(want, 10, 64); err == nil {
+		for _, t := range teams {
+			if t.ID == id {
+				return t, true
+			}
+		}
+	}
+	for _, t := range teams {
+		if strings.EqualFold(t.Name, want) {
+			return t, true
+		}
+	}
+	return api.Team{}, false
+}
+
+// pickerUsers is who the user picker offers. Disabled accounts are never worth
+// assigning to. For the schedule it is also limited to the team's members: the
+// server answers 404 for anyone else, and shows nothing until they are known.
+func (m Model) pickerUsers() []api.User {
+	out := make([]api.User, 0, len(m.users))
+	for _, u := range m.users {
+		if u.IsDisabled() {
+			continue
+		}
+		if m.pickerTarget == pickerSchedule && !m.pickerMembers[u.ID] {
+			continue
+		}
+		out = append(out, u)
+	}
+	return out
+}
+
+// userFlags is the Users table's marker column.
+func userFlags(u api.User) string {
+	var flags []string
+	if u.IsAdmin {
+		flags = append(flags, "admin")
+	}
+	if u.IsDisabled() {
+		flags = append(flags, "disabled")
+	}
+	if len(flags) == 0 {
+		return "—"
+	}
+	return strings.Join(flags, ",")
+}
+
 // noteEvents filters a timeline down to the deletable entries, which is what
 // the [ and ] cursor walks.
 func noteEvents(timeline []api.IncidentEvent) []api.IncidentEvent {
@@ -446,44 +755,67 @@ func noteEvents(timeline []api.IncidentEvent) []api.IncidentEvent {
 
 // ── Column definitions ─────────────────────────────────────────────────────
 
-func incidentColumns(width int) []table.Column {
+// teamW is the width of the Team column shown when rows can span teams.
+const teamW = 14
+
+func incidentColumns(width int, showTeam bool) []table.Column {
 	const sevW, statusW, timeW = 9, 15, 12
 	titleW := width/2 - 10
+	if showTeam {
+		titleW -= teamW + 2
+	}
 	if titleW < 20 {
 		titleW = 20
 	}
 	// 10 = bubbles' Padding(0, 1) on each of the five cells.
 	assigneeW := width - sevW - titleW - statusW - timeW - 10
+	if showTeam {
+		assigneeW -= teamW + 2
+	}
 	if assigneeW < 8 {
 		assigneeW = 8
 	}
-	return []table.Column{
+	cols := []table.Column{
 		{Title: "Sev", Width: sevW},
 		{Title: "Incident", Width: titleW},
-		{Title: "Status", Width: statusW},
-		{Title: "Assignee", Width: assigneeW},
-		{Title: "Triggered", Width: timeW},
 	}
+	if showTeam {
+		cols = append(cols, table.Column{Title: "Team", Width: teamW})
+	}
+	return append(cols,
+		table.Column{Title: "Status", Width: statusW},
+		table.Column{Title: "Assignee", Width: assigneeW},
+		table.Column{Title: "Triggered", Width: timeW},
+	)
 }
 
-func alertColumns(width int) []table.Column {
+func alertColumns(width int, showTeam bool) []table.Column {
 	const statusW, timeW = 10, 12
 	nameW := width/2 - 14
+	if showTeam {
+		nameW -= teamW + 2
+	}
 	if nameW < 20 {
 		nameW = 20
 	}
 	// 10 = bubbles' Padding(0, 1) on each of the five cells.
 	incW := width - nameW - statusW - 2*timeW - 10
+	if showTeam {
+		incW -= teamW + 2
+	}
 	if incW < 8 {
 		incW = 8
 	}
-	return []table.Column{
+	cols := []table.Column{{Title: "Name", Width: nameW}}
-		{Title: "Name", Width: nameW},
+	if showTeam {
-		{Title: "Status", Width: statusW},
+		cols = append(cols, table.Column{Title: "Team", Width: teamW})
-		{Title: "Started", Width: timeW},
-		{Title: "Last Seen", Width: timeW},
-		{Title: "Incident", Width: incW},
 	}
+	return append(cols,
+		table.Column{Title: "Status", Width: statusW},
+		table.Column{Title: "Started", Width: timeW},
+		table.Column{Title: "Last Seen", Width: timeW},
+		table.Column{Title: "Incident", Width: incW},
+	)
 }
 
 func scheduleColumns(width int) []table.Column {
@@ -514,8 +846,9 @@ func userManageColumns(width int) []table.Column {
 	createdW := 12
 	usernameW := 25
 	topicW := 22
-	// 8 = bubbles' Padding(0, 1) on each of the four cells.
+	flagsW := 14
-	emailW := width - usernameW - topicW - createdW - 8
+	// 10 = bubbles' Padding(0, 1) on each of the five cells.
+	emailW := width - usernameW - topicW - flagsW - createdW - 10
 	if emailW < 15 {
 		emailW = 15
 	}
@@ -523,13 +856,14 @@ func userManageColumns(width int) []table.Column {
 		{Title: "Username", Width: usernameW},
 		{Title: "Email", Width: emailW},
 		{Title: "Ntfy Topic", Width: topicW},
+		{Title: "Flags", Width: flagsW},
 		{Title: "Created", Width: createdW},
 	}
 }
 
 // ── Row builders ───────────────────────────────────────────────────────────
 
-func incidentRows(incidents []api.Incident) []table.Row {
+func incidentRows(incidents []api.Incident, showTeam bool) []table.Row {
 	now := time.Now()
 	rows := make([]table.Row, len(incidents))
 	for i, inc := range incidents {
@@ -547,12 +881,16 @@ func incidentRows(incidents []api.Incident) []table.Row {
 		if assignee == "" {
 			assignee = "—"
 		}
+		if showTeam {
+			rows[i] = table.Row{severity, inc.Title, teamLabel(inc.TeamName), status, assignee, humanAgo(now, inc.TriggeredAt)}
+			continue
+		}
 		rows[i] = table.Row{severity, inc.Title, status, assignee, humanAgo(now, inc.TriggeredAt)}
 	}
 	return rows
 }
 
-func alertRows(alerts []api.Alert) []table.Row {
+func alertRows(alerts []api.Alert, showTeam bool) []table.Row {
 	now := time.Now()
 	rows := make([]table.Row, len(alerts))
 	for i, a := range alerts {
@@ -560,11 +898,23 @@ func alertRows(alerts []api.Alert) []table.Row {
 		if a.IncidentID != nil {
 			incident = fmt.Sprintf("#%d", *a.IncidentID)
 		}
+		if showTeam {
+			rows[i] = table.Row{a.Name, teamLabel(a.TeamName), a.Status, humanAgo(now, a.StartsAt), humanAgo(now, a.ReceivedAt), incident}
+			continue
+		}
 		rows[i] = table.Row{a.Name, a.Status, humanAgo(now, a.StartsAt), humanAgo(now, a.ReceivedAt), incident}
 	}
 	return rows
 }
 
+// teamLabel is a team name for a table cell, with a dash when the server sent none.
+func teamLabel(name string) string {
+	if name == "" {
+		return "—"
+	}
+	return name
+}
+
 func scheduleRows(days []scheduleDay) []table.Row {
 	today := time.Now().UTC().Format("2006-01-02")
 	rows := make([]table.Row, len(days))
@@ -659,19 +1009,70 @@ func humanSeconds(secs *float64) string {
 
 // ── Commands ───────────────────────────────────────────────────────────────
 
+// errServerTooOld is what connecting to a server without teams looks like: the
+// server has no version endpoint, so its missing /api/teams is the tell.
+var errServerTooOld = errors.New("this server predates teams -- terdut-tui needs terdut-server v0.20 or later")
+
+// connectCmd checks the server is up, then loads the caller's teams and identity
+// with their key. /healthz is unauthenticated, so this is also the first thing
+// to notice a wrong key.
 func connectCmd(client *api.Client) tea.Cmd {
 	return func() tea.Msg {
 		if err := client.HealthCheck(); err != nil {
 			return connectErrMsg{err}
 		}
-		return connectedMsg{}
+		teams, err := client.ListTeams()
+		var se *api.StatusError
+		if errors.As(err, &se) && se.Code == http.StatusNotFound {
+			return connectErrMsg{errServerTooOld}
+		}
+		if err != nil {
+			return connectErrMsg{err}
+		}
+		me, err := client.Me()
+		if err != nil {
+			return connectErrMsg{err}
+		}
+		return connectedMsg{teams: teams, me: *me}
 	}
 }
 
-func fetchIncidentsCmd(client *api.Client, filter string) tea.Cmd {
+// loginCmd signs in and saves the session, so the next run can resume it. Failing
+// to save is not failing to sign in: the session works for this run either way.
+func loginCmd(client *api.Client, serverURL, username, password string) tea.Cmd {
+	return func() tea.Msg {
+		token, err := client.Login(username, password)
+		if err != nil {
+			return loginErrMsg{err}
+		}
+		_ = session.Save(serverURL, token)
+		return loginDoneMsg{}
+	}
+}
+
+// logoutCmd ends the session on the server and deletes the saved one. The saved
+// copy goes even when the server cannot be reached, because the person asked to
+// be signed out and a token left on disk would say otherwise.
+func logoutCmd(client *api.Client) tea.Cmd {
+	return func() tea.Msg {
+		_ = client.Logout()
+		_ = session.Clear()
+		return logoutDoneMsg{}
+	}
+}
+
+// forgetSessionCmd drops a saved session the server no longer honours.
+func forgetSessionCmd() tea.Cmd {
+	return func() tea.Msg {
+		_ = session.Clear()
+		return nil
+	}
+}
+
+func fetchIncidentsCmd(client *api.Client, teamID int64, filter string) tea.Cmd {
 	return func() tea.Msg {
 		status, snoozed := incidentQuery(filter)
-		incidents, err := client.ListIncidents(status, false, snoozed, 500)
+		incidents, err := client.ListIncidents(teamID, status, false, snoozed, 500)
 		if err != nil {
 			return fetchDataErrMsg{err}
 		}
@@ -679,11 +1080,11 @@ func fetchIncidentsCmd(client *api.Client, filter string) tea.Cmd {
 	}
 }
 
-func fetchArchivedIncidentsCmd(client *api.Client) tea.Cmd {
+func fetchArchivedIncidentsCmd(client *api.Client, teamID int64) tea.Cmd {
 	return func() tea.Msg {
 		// Archived incidents are all resolved, so the status filter has to be
 		// widened past the server's open-only default or nothing comes back.
-		incidents, err := client.ListIncidents(api.StatusResolved, true, false, 500)
+		incidents, err := client.ListIncidents(teamID, api.StatusResolved, true, false, 500)
 		if err != nil {
 			return fetchDataErrMsg{err}
 		}
@@ -691,13 +1092,13 @@ func fetchArchivedIncidentsCmd(client *api.Client) tea.Cmd {
 	}
 }
 
-func fetchAlertsCmd(client *api.Client, filter string) tea.Cmd {
+func fetchAlertsCmd(client *api.Client, teamID int64, filter string) tea.Cmd {
 	return func() tea.Msg {
 		status, archived := filter, false
 		if filter == "archived" {
 			status, archived = "", true
 		}
-		alerts, err := client.ListAlerts(status, archived, 500)
+		alerts, err := client.ListAlerts(teamID, status, archived, 500)
 		if err != nil {
 			return fetchDataErrMsg{err}
 		}
@@ -797,13 +1198,13 @@ func deleteNoteCmd(client *api.Client, id, eventID int64) tea.Cmd {
 
 // archiveIncidentCmd archives from the list view, so it reloads the list rather
 // than a detail pane.
-func archiveIncidentCmd(client *api.Client, id int64, filter string) tea.Cmd {
+func archiveIncidentCmd(client *api.Client, id, teamID int64, filter string) tea.Cmd {
 	return func() tea.Msg {
 		if _, err := client.ArchiveIncident(id); err != nil {
 			return actionErrMsg{err}
 		}
 		status, snoozed := incidentQuery(filter)
-		incidents, err := client.ListIncidents(status, false, snoozed, 500)
+		incidents, err := client.ListIncidents(teamID, status, false, snoozed, 500)
 		if err != nil {
 			return actionErrMsg{err}
 		}
@@ -811,12 +1212,12 @@ func archiveIncidentCmd(client *api.Client, id int64, filter string) tea.Cmd {
 	}
 }
 
-func unarchiveIncidentCmd(client *api.Client, id int64) tea.Cmd {
+func unarchiveIncidentCmd(client *api.Client, id, teamID int64) tea.Cmd {
 	return func() tea.Msg {
 		if err := client.UnarchiveIncident(id); err != nil {
 			return actionErrMsg{err}
 		}
-		incidents, err := client.ListIncidents(api.StatusResolved, true, false, 500)
+		incidents, err := client.ListIncidents(teamID, api.StatusResolved, true, false, 500)
 		if err != nil {
 			return actionErrMsg{err}
 		}
@@ -852,51 +1253,73 @@ func fetchDetailStatsCmd(client *api.Client) tea.Cmd {
 	}
 }
 
-func fetchScheduleCmd(client *api.Client, from, to time.Time) tea.Cmd {
+// loadSchedule reads one team's window and everyone's on-call today, the way
+// every schedule command ends so the view reflects what the server now holds.
+func loadSchedule(client *api.Client, teamID int64, from, to time.Time) (scheduleFetchedMsg, error) {
+	entries, err := client.GetSchedule(teamID, from.Format("2006-01-02"), to.Format("2006-01-02"))
+	if err != nil {
+		return scheduleFetchedMsg{}, err
+	}
+	current, err := client.GetCurrentOnCall()
+	if err != nil {
+		return scheduleFetchedMsg{}, err
+	}
+	return scheduleFetchedMsg{entries: entries, current: current}, nil
+}
+
+func fetchScheduleCmd(client *api.Client, teamID int64, from, to time.Time) tea.Cmd {
 	return func() tea.Msg {
-		entries, err := client.GetSchedule(from.Format("2006-01-02"), to.Format("2006-01-02"))
+		msg, err := loadSchedule(client, teamID, from, to)
 		if err != nil {
 			return scheduleFetchErrMsg{err}
 		}
-		current, err := client.GetCurrentOnCall()
+		return msg
-		if err != nil {
-			return scheduleFetchErrMsg{err}
-		}
-		return scheduleFetchedMsg{entries: entries, current: current}
 	}
 }
 
-func assignScheduleCmd(client *api.Client, userID int64, dates []string, from, to time.Time) tea.Cmd {
+func assignScheduleCmd(client *api.Client, teamID, userID int64, dates []string, replace bool, from, to time.Time) tea.Cmd {
 	return func() tea.Msg {
-		if _, err := client.AssignSchedule(userID, dates); err != nil {
+		if _, err := client.AssignSchedule(teamID, userID, dates, replace); err != nil {
 			return scheduleActionErrMsg{err}
 		}
-		entries, err := client.GetSchedule(from.Format("2006-01-02"), to.Format("2006-01-02"))
+		msg, err := loadSchedule(client, teamID, from, to)
 		if err != nil {
 			return scheduleActionErrMsg{err}
 		}
-		current, err := client.GetCurrentOnCall()
+		return msg
-		if err != nil {
-			return scheduleActionErrMsg{err}
-		}
-		return scheduleFetchedMsg{entries: entries, current: current}
 	}
 }
 
-func deleteScheduleEntryCmd(client *api.Client, entryID int64, from, to time.Time) tea.Cmd {
+func deleteScheduleEntryCmd(client *api.Client, teamID, entryID int64, from, to time.Time) tea.Cmd {
 	return func() tea.Msg {
-		if err := client.DeleteScheduleEntry(entryID); err != nil {
+		if err := client.DeleteScheduleEntry(teamID, entryID); err != nil {
 			return scheduleActionErrMsg{err}
 		}
-		entries, err := client.GetSchedule(from.Format("2006-01-02"), to.Format("2006-01-02"))
+		msg, err := loadSchedule(client, teamID, from, to)
 		if err != nil {
 			return scheduleActionErrMsg{err}
 		}
-		current, err := client.GetCurrentOnCall()
+		return msg
+	}
+}
+
+// fetchPickerCmd loads what the schedule's user picker offers: everyone, and who
+// belongs to the team, since only members can be put on its rota.
+func fetchPickerCmd(client *api.Client, teamID int64) tea.Cmd {
+	return func() tea.Msg {
+		users, err := client.ListUsers()
 		if err != nil {
-			return scheduleActionErrMsg{err}
+			return userActionErrMsg{err}
 		}
-		return scheduleFetchedMsg{entries: entries, current: current}
+		members, err := client.ListTeamMembers(teamID)
+		if err != nil {
+			return userActionErrMsg{err}
+		}
+		ids := make(map[int64]bool, len(members))
+		for _, mem := range members {
+			ids[mem.UserID] = true
+		}
+		return pickerReadyMsg{users: users, members: ids}
 	}
 }
 
@@ -962,6 +1385,29 @@ func createAPIKeyCmd(client *api.Client, userID int64, name string) tea.Cmd {
 	}
 }
 
+func fetchMeCmd(client *api.Client) tea.Cmd {
+	return func() tea.Msg {
+		me, err := client.Me()
+		var se *api.StatusError
+		if errors.As(err, &se) && se.Code == http.StatusNotFound {
+			return userActionErrMsg{errors.New("this server has no passwords -- needs terdut-server v0.10.2 or later")}
+		}
+		if err != nil {
+			return userActionErrMsg{err}
+		}
+		return meFetchedMsg{me: *me}
+	}
+}
+
+func setPasswordCmd(client *api.Client, user api.User, password, current string) tea.Cmd {
+	return func() tea.Msg {
+		if err := client.SetPassword(user.ID, password, current); err != nil {
+			return userActionErrMsg{err}
+		}
+		return passwordSetMsg{username: user.Username}
+	}
+}
+
 func deleteAPIKeyCmd(client *api.Client, userID, keyID int64) tea.Cmd {
 	return func() tea.Msg {
 		if err := client.DeleteAPIKey(userID, keyID); err != nil {

internal/tui/model_test.go

@@ -4,8 +4,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/table"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 func TestNextFilter(t *testing.T) {
@@ -142,7 +143,7 @@ func TestIncidentRows(t *testing.T) {
 		{Title: "Unowned", Status: api.StatusTriggered, TriggeredAt: time.Now()},
 		{Title: "Quiet", Status: api.StatusTriggered, Severity: "info",
 			AssignedTo: "alice", SnoozedUntil: &future, TriggeredAt: time.Now()},
-	})
+	}, false)
 	if len(rows) != 3 {
 		t.Fatalf("expected 3 rows, got %d", len(rows))
 	}
@@ -158,12 +159,35 @@ func TestIncidentRows(t *testing.T) {
 	}
 }
 
+// Rows only carry a team cell when the columns have a Team header for it, or
+// every cell after it would sit under the wrong heading.
+func TestRows_TeamCellMatchesTeamColumn(t *testing.T) {
+	now := time.Now()
+	incRows := incidentRows([]api.Incident{{Title: "DiskFull", TeamName: "Ops", Status: api.StatusTriggered, TriggeredAt: now}}, true)
+	if got, want := len(incRows[0]), len(incidentColumns(120, true)); got != want {
+		t.Errorf("incident row has %d cells for %d columns", got, want)
+	}
+	if incRows[0][2] != "Ops" {
+		t.Errorf("expected the team after the title, got %v", incRows[0])
+	}
+	alRows := alertRows([]api.Alert{{Name: "DiskFull", StartsAt: now, ReceivedAt: now}}, true)
+	if got, want := len(alRows[0]), len(alertColumns(120, true)); got != want {
+		t.Errorf("alert row has %d cells for %d columns", got, want)
+	}
+	if alRows[0][1] != "—" {
+		t.Errorf("a missing team name should show an em dash, got %v", alRows[0])
+	}
+	if got, want := len(incidentRows([]api.Incident{{}}, false)[0]), len(incidentColumns(120, false)); got != want {
+		t.Errorf("incident row has %d cells for %d columns without teams", got, want)
+	}
+}
+
 func TestAlertRows_ShowIncidentLink(t *testing.T) {
 	id := int64(7)
 	rows := alertRows([]api.Alert{
 		{Name: "DiskFull", Status: "firing", IncidentID: &id},
 		{Name: "Orphan", Status: "resolved"},
-	})
+	}, false)
 	if rows[0][4] != "#7" {
 		t.Errorf("expected #7, got %q", rows[0][4])
 	}
@@ -177,7 +201,7 @@ func TestAlertRows_ShowIncidentLink(t *testing.T) {
 func TestUserManageRows_ShowMissingTopic(t *testing.T) {
 	topic := "terdut-niklas"
 	empty := ""
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.users = []api.User{
 		{ID: 1, Username: "niklas", NtfyTopic: &topic},
@@ -203,31 +227,31 @@ func TestUserManageRows_ShowMissingTopic(t *testing.T) {
 // the window width.
 func TestColumnWidthsFitTheTerminal(t *testing.T) {
 	for _, width := range []int{100, 110, 140, 200} {
-		for name, cols := range map[string][]int{
+		// Five cells each, or six once a Team column is added. userManageColumns
-			"incident": widths(incidentColumns(width)),
+		// is five cells as well: username, email, topic, flags, created.
-			"alert":    widths(alertColumns(width)),
+		for name, tc := range map[string]struct {
+			cols  []table.Column
+			cells int
+		}{
+			"incident":           {incidentColumns(width, false), 5},
+			"incident with team": {incidentColumns(width, true), 6},
+			"alert":              {alertColumns(width, false), 5},
+			"alert with team":    {alertColumns(width, true), 6},
+			"user":               {userManageColumns(width), 5},
 		} {
 			sum := 0
-			for _, w := range cols {
+			for _, w := range widths(tc.cols) {
 				sum += w
 			}
-			const padding = 10 // bubbles applies Padding(0, 1) to each of five cells
+			padding := 2 * tc.cells // bubbles applies Padding(0, 1) to each cell
+			if len(tc.cols) != tc.cells {
+				t.Errorf("%s has %d columns, expected %d", name, len(tc.cols), tc.cells)
+			}
 			if sum+padding != width {
 				t.Errorf("%s columns at width %d sum to %d+%d = %d",
 					name, width, sum, padding, sum+padding)
 			}
 		}
-
-		// The users table is four cells, so its padding budget differs.
-		sum := 0
-		for _, w := range widths(userManageColumns(width)) {
-			sum += w
-		}
-		const userPadding = 8
-		if sum+userPadding != width {
-			t.Errorf("user columns at width %d sum to %d+%d = %d",
-				width, sum, userPadding, sum+userPadding)
-		}
 	}
 }
 
@@ -235,7 +259,7 @@ func TestColumnWidthsFitTheTerminal(t *testing.T) {
 // what must not happen is a negative or zero column.
 func TestColumnWidthsStayPositiveWhenNarrow(t *testing.T) {
 	for _, width := range []int{20, 40, 60} {
-		cols := append(widths(incidentColumns(width)), widths(alertColumns(width))...)
+		cols := append(widths(incidentColumns(width, true)), widths(alertColumns(width, true))...)
 		cols = append(cols, widths(userManageColumns(width))...)
 		for _, w := range cols {
 			if w < 1 {
@@ -277,3 +301,96 @@ func TestBuildScheduleDays(t *testing.T) {
 		t.Error("expected unassigned days to have no entry")
 	}
 }
+
+// ── Schedule reassignment ─────────────────────────────────────────────────
+
+// scheduledWeek builds a model showing the week of 2026-07-27 with the given
+// entries already on the rota.
+func scheduledWeek(entries []api.ScheduleEntry) Model {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	m.connected = true
+	m.teams = []api.Team{{ID: 1, Name: "Ops", Role: api.RoleOwner}}
+	m.activeSection = sectionSchedule
+	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
+	m.scheduleEntries = entries
+	m.scheduleDays = buildScheduleDays(m.scheduleWindow, entries)
+	m.rebuildScheduleTable()
+	return m
+}
+
+func TestScheduleConflicts(t *testing.T) {
+	m := scheduledWeek([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+		{ID: 2, Date: "2026-07-28", UserID: 3, Username: "sam"},
+		{ID: 3, Date: "2026-07-29", UserID: 2, Username: "alex"},
+	})
+	week := []string{"2026-07-27", "2026-07-28", "2026-07-29", "2026-07-30"}
+
+	// Assigning alex: the days niklas and sam hold are conflicts, the day alex
+	// already holds is not, and the free day is not.
+	taken, holders := m.scheduleConflicts(week, 2)
+	if len(taken) != 2 || taken[0] != "2026-07-27" || taken[1] != "2026-07-28" {
+		t.Errorf("expected the two other people's days, got %v", taken)
+	}
+	if len(holders) != 2 || holders[0] != "niklas" || holders[1] != "sam" {
+		t.Errorf("expected both holders named once, got %v", holders)
+	}
+}
+
+// Reassigning somebody to a day they already hold takes nothing from anyone, so
+// it must not raise a prompt — but it still needs replace, because the server
+// rejects any date that already exists.
+func TestScheduleConflicts_OwnDayIsNotAConflict(t *testing.T) {
+	m := scheduledWeek([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 2, Username: "alex"},
+	})
+	dates := []string{"2026-07-27"}
+
+	if taken, _ := m.scheduleConflicts(dates, 2); len(taken) != 0 {
+		t.Errorf("expected no conflict on the user's own day, got %v", taken)
+	}
+	if !m.scheduleOccupied(dates) {
+		t.Error("expected the day to still count as occupied, so replace is sent")
+	}
+}
+
+func TestScheduleOccupied_FreeDays(t *testing.T) {
+	m := scheduledWeek(nil)
+	if m.scheduleOccupied([]string{"2026-07-27", "2026-07-28"}) {
+		t.Error("expected an empty rota to need no replace")
+	}
+}
+
+func TestDayCount(t *testing.T) {
+	tests := []struct {
+		taken, total int
+		want         string
+	}{
+		{1, 1, "This day is"},
+		{7, 7, "All 7 days are"},
+		{3, 7, "3 of 7 days are"},
+	}
+	for _, tt := range tests {
+		if got := dayCount(tt.taken, tt.total); got != tt.want {
+			t.Errorf("dayCount(%d, %d) = %q, want %q", tt.taken, tt.total, got, tt.want)
+		}
+	}
+}
+
+func TestJoinNames(t *testing.T) {
+	tests := []struct {
+		names []string
+		want  string
+	}{
+		{nil, "somebody else"},
+		{[]string{"niklas"}, "niklas"},
+		{[]string{"niklas", "alex"}, "niklas and alex"},
+		{[]string{"niklas", "alex", "sam"}, "niklas, alex and sam"},
+	}
+	for _, tt := range tests {
+		if got := joinNames(tt.names); got != tt.want {
+			t.Errorf("joinNames(%v) = %q, want %q", tt.names, got, tt.want)
+		}
+	}
+}

internal/tui/styles.go

@@ -3,97 +3,173 @@ package tui
 import (
 	"strings"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"github.com/charmbracelet/bubbles/help"
+	"github.com/charmbracelet/bubbles/table"
+	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/lipgloss"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
-var (
+// Styles is every style the views draw with, built once from a theme and held
-	colorPrimary  = lipgloss.Color("69")  // blue
+// on the Model. Nothing here reads a colour literal: the theme is the only
-	colorMuted    = lipgloss.Color("240") // gray
+// place a colour is named.
-	colorFiring   = lipgloss.Color("196") // red
+type Styles struct {
-	colorResolved = lipgloss.Color("70")  // green
+	Header      lipgloss.Style
-	colorAccent   = lipgloss.Color("214") // orange
+	TabActive   lipgloss.Style
+	TabInactive lipgloss.Style
+	Footer      lipgloss.Style
+	Status      lipgloss.Style
 
-	colorSevCritical = lipgloss.Color("196") // red
+	Error     lipgloss.Style
-	colorSevError    = lipgloss.Color("202") // dark orange
+	Firing    lipgloss.Style
-	colorSevWarning  = lipgloss.Color("214") // orange
+	Resolved  lipgloss.Style
-	colorSevInfo     = lipgloss.Color("39")  // cyan
+	Muted     lipgloss.Style
-
+	Accent    lipgloss.Style
-	styleHeader = lipgloss.NewStyle().
+	AlertName lipgloss.Style
-			Bold(true).
+	Bold      lipgloss.Style
-			Foreground(colorPrimary).
+	Selected  lipgloss.Style
-			Padding(0, 1)
-
-	styleTabActive = lipgloss.NewStyle().
-			Bold(true).
-			Foreground(lipgloss.Color("0")).
-			Background(colorPrimary).
-			Padding(0, 2)
-
-	styleTabInactive = lipgloss.NewStyle().
-				Foreground(colorMuted).
-				Padding(0, 2)
-
-	styleFooter = lipgloss.NewStyle().
-			Foreground(colorMuted)
-
-	styleStatus = lipgloss.NewStyle().
-			Foreground(colorAccent).
-			Bold(true)
-
-	styleError = lipgloss.NewStyle().
-			Foreground(colorFiring).
-			Bold(true)
-
-	styleFiring    = lipgloss.NewStyle().Foreground(colorFiring).Bold(true)
-	styleResolved  = lipgloss.NewStyle().Foreground(colorResolved)
-	styleMuted     = lipgloss.NewStyle().Foreground(colorMuted)
-	styleAlertName = lipgloss.NewStyle().Bold(true)
-	styleBold      = lipgloss.NewStyle().Bold(true)
-	styleSelected  = lipgloss.NewStyle().Foreground(colorPrimary).Bold(true)
-	styleAccent    = lipgloss.NewStyle().Foreground(colorAccent)
 
 	// Incident status. Triggered is unclaimed work and reads as loudly as a
 	// firing alert; acknowledged means somebody has it.
-	styleTriggered    = lipgloss.NewStyle().Foreground(colorFiring).Bold(true)
+	Triggered    lipgloss.Style
-	styleAcknowledged = lipgloss.NewStyle().Foreground(colorAccent).Bold(true)
+	Acknowledged lipgloss.Style
-	styleSnoozed      = lipgloss.NewStyle().Foreground(colorMuted).Italic(true)
+	Snoozed      lipgloss.Style
 
 	// Severity, over the conventional Alertmanager label values.
-	styleSevCritical = lipgloss.NewStyle().Foreground(colorSevCritical).Bold(true)
+	SevCritical lipgloss.Style
-	styleSevError    = lipgloss.NewStyle().Foreground(colorSevError).Bold(true)
+	SevError    lipgloss.Style
-	styleSevWarning  = lipgloss.NewStyle().Foreground(colorSevWarning)
+	SevWarning  lipgloss.Style
-	styleSevInfo     = lipgloss.NewStyle().Foreground(colorSevInfo)
+	SevInfo     lipgloss.Style
-)
 
-// severityStyle picks the style for a severity label, falling back to muted for
+	theme theme.Theme
+}
+
+func newStyles(t theme.Theme) Styles {
+	return Styles{
+		Header: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(t.Primary).
+			Padding(0, 1),
+
+		TabActive: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(t.OnPrimary).
+			Background(t.Primary).
+			Padding(0, 2),
+
+		TabInactive: lipgloss.NewStyle().
+			Foreground(t.Muted).
+			Padding(0, 2),
+
+		Footer: lipgloss.NewStyle().Foreground(t.Muted),
+
+		Status: lipgloss.NewStyle().
+			Foreground(t.Accent).
+			Bold(true),
+
+		Error: lipgloss.NewStyle().
+			Foreground(t.Error).
+			Bold(true),
+
+		Firing:    lipgloss.NewStyle().Foreground(t.Firing).Bold(true),
+		Resolved:  lipgloss.NewStyle().Foreground(t.Resolved),
+		Muted:     lipgloss.NewStyle().Foreground(t.Muted),
+		Accent:    lipgloss.NewStyle().Foreground(t.Accent),
+		AlertName: lipgloss.NewStyle().Foreground(t.Text).Bold(true),
+		Bold:      lipgloss.NewStyle().Foreground(t.Text).Bold(true),
+		Selected:  lipgloss.NewStyle().Foreground(t.Primary).Bold(true),
+
+		Triggered:    lipgloss.NewStyle().Foreground(t.Firing).Bold(true),
+		Acknowledged: lipgloss.NewStyle().Foreground(t.Accent).Bold(true),
+		Snoozed:      lipgloss.NewStyle().Foreground(t.Muted).Italic(true),
+
+		SevCritical: lipgloss.NewStyle().Foreground(t.SevCritical).Bold(true),
+		SevError:    lipgloss.NewStyle().Foreground(t.SevError).Bold(true),
+		SevWarning:  lipgloss.NewStyle().Foreground(t.SevWarning),
+		SevInfo:     lipgloss.NewStyle().Foreground(t.SevInfo),
+
+		theme: t,
+	}
+}
+
+// Severity picks the style for a severity label, falling back to muted for
 // values this client does not recognise rather than dropping them.
-func severityStyle(severity string) lipgloss.Style {
+func (s Styles) Severity(severity string) lipgloss.Style {
 	switch strings.ToLower(severity) {
 	case "critical":
-		return styleSevCritical
+		return s.SevCritical
 	case "error":
-		return styleSevError
+		return s.SevError
 	case "warning":
-		return styleSevWarning
+		return s.SevWarning
 	case "info":
-		return styleSevInfo
+		return s.SevInfo
 	default:
-		return styleMuted
+		return s.Muted
 	}
 }
 
-// incidentStatusStyle picks the style for an incident status, falling back to
+// IncidentStatus picks the style for an incident status, falling back to muted
-// muted for statuses added after this client was built.
+// for statuses added after this client was built.
-func incidentStatusStyle(status string) lipgloss.Style {
+func (s Styles) IncidentStatus(status string) lipgloss.Style {
 	switch status {
 	case api.StatusTriggered:
-		return styleTriggered
+		return s.Triggered
 	case api.StatusAcknowledged:
-		return styleAcknowledged
+		return s.Acknowledged
 	case api.StatusResolved:
-		return styleResolved
+		return s.Resolved
 	default:
-		return styleMuted
+		return s.Muted
 	}
 }
+
+// ── Embedded bubbles components ────────────────────────────────────────────
+//
+// Each ships its own hardcoded palette, so a theme that stopped at this
+// package's own styles would leave a pink selected row and grey help text
+// behind. These three restyle them from the same tokens.
+
+// Table styles the six tables. Padding comes from the bubbles defaults; only
+// the colours are ours.
+func (s Styles) Table() table.Styles {
+	ts := table.DefaultStyles()
+	ts.Header = ts.Header.Foreground(s.theme.Muted).Bold(true)
+	// Cell deliberately keeps no foreground: bubbles renders each cell before
+	// wrapping the whole row in Selected, so a colour here would emit a reset
+	// mid-row and cut the selection highlight short.
+	ts.Selected = ts.Selected.
+		Foreground(s.theme.OnPrimary).
+		Background(s.theme.Primary).
+		Bold(true)
+	return ts
+}
+
+// Help styles the key hints in the footer.
+func (s Styles) Help() help.Styles {
+	key := lipgloss.NewStyle().Foreground(s.theme.Text)
+	desc := lipgloss.NewStyle().Foreground(s.theme.Muted)
+	sep := lipgloss.NewStyle().Foreground(s.theme.Muted)
+
+	return help.Styles{
+		Ellipsis:       sep,
+		ShortKey:       key,
+		ShortDesc:      desc,
+		ShortSeparator: sep,
+		FullKey:        key,
+		FullDesc:       desc,
+		FullSeparator:  sep,
+	}
+}
+
+// Input styles a text input and returns it, so NewModel can wrap each one as
+// it is built.
+func (s Styles) Input(ti textinput.Model) textinput.Model {
+	ti.PromptStyle = lipgloss.NewStyle().Foreground(s.theme.Primary)
+	ti.TextStyle = lipgloss.NewStyle().Foreground(s.theme.Text)
+	ti.PlaceholderStyle = lipgloss.NewStyle().Foreground(s.theme.Muted)
+	ti.CompletionStyle = lipgloss.NewStyle().Foreground(s.theme.Muted)
+	ti.Cursor.Style = lipgloss.NewStyle().Foreground(s.theme.Primary)
+	return ti
+}

internal/tui/styles_test.go

@@ -0,0 +1,131 @@
+package tui
+
+import (
+	"testing"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"github.com/charmbracelet/bubbles/textinput"
+	"github.com/charmbracelet/lipgloss"
+)
+
+// Assertions here read the colours off the styles rather than off rendered
+// output: under `go test` stdout is not a TTY, so lipgloss strips every escape
+// sequence and rendered strings would all compare equal.
+
+func wantFg(t *testing.T, s lipgloss.Style, want lipgloss.Color, what string) {
+	t.Helper()
+	if got := s.GetForeground(); got != want {
+		t.Errorf("%s foreground = %v, want %v", what, got, want)
+	}
+}
+
+func TestStyles_TokensReachTheStyles(t *testing.T) {
+	th := theme.GruvboxDark
+	s := newStyles(th)
+
+	wantFg(t, s.Header, th.Primary, "header")
+	wantFg(t, s.Firing, th.Firing, "firing")
+	wantFg(t, s.Resolved, th.Resolved, "resolved")
+	wantFg(t, s.Muted, th.Muted, "muted")
+	wantFg(t, s.Status, th.Accent, "status")
+	wantFg(t, s.Error, th.Error, "error")
+	wantFg(t, s.SevWarning, th.SevWarning, "sev warning")
+
+	// The two inverted spots need the pair, not just a foreground.
+	wantFg(t, s.TabActive, th.OnPrimary, "active tab")
+	if got := s.TabActive.GetBackground(); got != th.Primary {
+		t.Errorf("active tab background = %v, want %v", got, th.Primary)
+	}
+
+	// Attributes the old package-level styles carried must survive.
+	if !s.Firing.GetBold() {
+		t.Error("firing lost its bold")
+	}
+	if !s.Snoozed.GetItalic() {
+		t.Error("snoozed lost its italic")
+	}
+	if top, right, bottom, left := s.TabActive.GetPadding(); top != 0 || right != 2 || bottom != 0 || left != 2 {
+		t.Errorf("active tab padding = %d %d %d %d, want 0 2 0 2", top, right, bottom, left)
+	}
+}
+
+func TestStyles_EachBuiltinIsFullyPopulated(t *testing.T) {
+	for _, th := range []theme.Theme{theme.GruvboxDark, theme.GruvboxLight} {
+		s := newStyles(th)
+		for what, style := range map[string]lipgloss.Style{
+			"header": s.Header, "tab inactive": s.TabInactive, "footer": s.Footer,
+			"status": s.Status, "error": s.Error, "firing": s.Firing,
+			"resolved": s.Resolved, "muted": s.Muted, "accent": s.Accent,
+			"alert name": s.AlertName, "bold": s.Bold, "selected": s.Selected,
+			"triggered": s.Triggered, "acknowledged": s.Acknowledged, "snoozed": s.Snoozed,
+			"sev critical": s.SevCritical, "sev error": s.SevError,
+			"sev warning": s.SevWarning, "sev info": s.SevInfo,
+		} {
+			if style.GetForeground() == (lipgloss.NoColor{}) {
+				t.Errorf("%s: %s has no foreground", th.Name, what)
+			}
+		}
+	}
+}
+
+func TestStyles_SeverityFallsBackToMuted(t *testing.T) {
+	s := newStyles(theme.GruvboxDark)
+
+	for _, sev := range []string{"critical", "CRITICAL", "error", "warning", "info"} {
+		if s.Severity(sev).GetForeground() == s.Muted.GetForeground() {
+			t.Errorf("severity %q should have its own colour", sev)
+		}
+	}
+	for _, sev := range []string{"", "page", "unknown"} {
+		if s.Severity(sev).GetForeground() != s.Muted.GetForeground() {
+			t.Errorf("severity %q should fall back to muted", sev)
+		}
+	}
+}
+
+func TestStyles_IncidentStatusFallsBackToMuted(t *testing.T) {
+	s := newStyles(theme.GruvboxDark)
+
+	for _, status := range []string{api.StatusTriggered, api.StatusAcknowledged, api.StatusResolved} {
+		if s.IncidentStatus(status).GetForeground() == s.Muted.GetForeground() {
+			t.Errorf("status %q should have its own colour", status)
+		}
+	}
+	if s.IncidentStatus("invented-later").GetForeground() != s.Muted.GetForeground() {
+		t.Error("an unknown status should fall back to muted")
+	}
+}
+
+// The bubbles components ship their own palettes — a pink selected row, grey
+// help text, a 240 placeholder. These check we replaced them.
+func TestStyles_BubblesComponentsFollowTheTheme(t *testing.T) {
+	th := theme.GruvboxDark
+	s := newStyles(th)
+
+	ts := s.Table()
+	wantFg(t, ts.Selected, th.OnPrimary, "table selection")
+	if got := ts.Selected.GetBackground(); got != th.Primary {
+		t.Errorf("table selection background = %v, want %v", got, th.Primary)
+	}
+	wantFg(t, ts.Header, th.Muted, "table header")
+	if _, right, _, left := ts.Cell.GetPadding(); right != 1 || left != 1 {
+		t.Error("table cell padding was lost")
+	}
+	// A foreground on Cell would emit a reset mid-row and truncate the
+	// selection highlight, so it must stay unset.
+	if ts.Cell.GetForeground() != (lipgloss.NoColor{}) {
+		t.Error("table cells must not carry a foreground")
+	}
+
+	h := s.Help()
+	wantFg(t, h.ShortKey, th.Text, "help key")
+	wantFg(t, h.ShortDesc, th.Muted, "help description")
+	wantFg(t, h.FullSeparator, th.Muted, "help separator")
+
+	in := s.Input(textinput.New())
+	wantFg(t, in.PlaceholderStyle, th.Muted, "input placeholder")
+	wantFg(t, in.TextStyle, th.Text, "input text")
+	wantFg(t, in.PromptStyle, th.Primary, "input prompt")
+	wantFg(t, in.Cursor.Style, th.Primary, "input cursor")
+}

internal/tui/update.go

@@ -1,16 +1,28 @@
 package tui
 
 import (
+	"errors"
+	"fmt"
+	"net/http"
+	"slices"
 	"strconv"
 	"strings"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
 	"github.com/atotto/clipboard"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	// A 401 from anything means the server no longer honours the session: it
+	// expired, was ended from the web UI, or the account was disabled. Whatever
+	// was being done cannot succeed, so go back to the sign-in form and say why,
+	// rather than leaving every action to fail with "server returned 401".
+	if err := msgError(msg); api.IsUnauthorized(err) && m.mode != modeLogin {
+		return m.requireLogin("your session has ended — sign in again"), forgetSessionCmd()
+	}
+
 	switch msg := msg.(type) {
 	case tea.WindowSizeMsg:
 		m.width = msg.Width
@@ -31,13 +43,55 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	// ── Dashboard messages ────────────────────────────────────────────────
 
+	case loginDoneMsg:
+		m.loggingIn = false
+		m.loginErr = ""
+		m.loginNote = ""
+		m.loginInputs[loginPassword].Reset()
+		m.blurLoginForm()
+		m.mode = modeDashboard
+		m.err = nil
+		return m, connectCmd(m.client)
+
+	case loginErrMsg:
+		m.loggingIn = false
+		m.loginErr = loginErrorText(msg.err)
+		m.loginInputs[loginPassword].Reset()
+		m.focusLogin(loginPassword)
+		return m, nil
+
+	case logoutDoneMsg:
+		return m.requireLogin("you have signed out"), nil
+
 	case connectedMsg:
+		firstConnect := len(m.teams) == 0
 		m.connected = true
 		m.err = nil
+		m.teams = msg.teams
+		m.meID = msg.me.User.ID
+		m.isAdmin = msg.me.User.IsAdmin
+		var statusCmd tea.Cmd
+		if firstConnect && m.activeTeamID == 0 && m.defaultTeam != "" {
+			if t, ok := resolveTeam(m.teams, m.defaultTeam); ok {
+				m.activeTeamID = t.ID
+			} else {
+				m.statusMsg = fmt.Sprintf("team %q not found -- showing all teams", m.defaultTeam)
+				statusCmd = clearStatusCmd()
+			}
+		}
+		m.rebuildIncidentTable()
+		m.rebuildTable()
+		m.rebuildArchivedTable()
+		var tick tea.Cmd
+		if !m.ticking {
+			m.ticking = true
+			tick = tickCmd(m.refreshInterval)
+		}
 		return m, tea.Batch(
-			tickCmd(m.refreshInterval),
+			tick,
-			fetchIncidentsCmd(m.client, m.incidentFilter),
+			fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter),
 			fetchStatsCmd(m.client),
+			statusCmd,
 		)
 
 	case connectErrMsg:
@@ -157,6 +211,17 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.rebuildUserManageTable()
 		return m, nil
 
+	case pickerReadyMsg:
+		if m.mode != modeUserPicker {
+			return m, nil // the picker was closed before the lookup came back
+		}
+		m.users = msg.users
+		m.pickerMembers = msg.members
+		m.usersLoading = false
+		m.rebuildUserPickerTable()
+		m.rebuildUserManageTable()
+		return m, nil
+
 	case apiKeyCreatedMsg:
 		m.revealedAPIKey = msg.key
 		m.mode = modeAPIKeyReveal
@@ -167,8 +232,27 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.mode = modeDashboard
 		return m, clearStatusCmd()
 
+	case meFetchedMsg:
+		if m.mode != modePasswordSet {
+			return m, nil // the form was closed before the lookup came back
+		}
+		m.pwLoading = false
+		m.pwNeedCurrent = msg.me.User.ID == m.selectedUser.ID && msg.me.HasPassword
+		m.pwFocus = pwNew
+		if m.pwNeedCurrent {
+			m.pwFocus = pwCurrent
+		}
+		m.pwInputs[m.pwFocus].Focus()
+		return m, nil
+
+	case passwordSetMsg:
+		m.statusMsg = "password set for " + msg.username + " -- their other web sessions were signed out"
+		return m, clearStatusCmd()
+
 	case userActionErrMsg:
 		m.usersLoading = false
+		m.pwLoading = false
+		m.blurPasswordForm()
 		m.statusMsg = "error: " + msg.err.Error()
 		m.mode = modeDashboard
 		return m, clearStatusCmd()
@@ -205,22 +289,32 @@ func (m Model) refreshActiveSection() tea.Cmd {
 
 	switch m.activeSection {
 	case sectionIncidents:
-		return tea.Batch(fetchIncidentsCmd(m.client, m.incidentFilter), fetchStatsCmd(m.client))
+		return tea.Batch(fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter), fetchStatsCmd(m.client))
 	case sectionAlerts:
-		return tea.Batch(fetchAlertsCmd(m.client, m.alertFilter), fetchStatsCmd(m.client))
+		return tea.Batch(fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter), fetchStatsCmd(m.client))
 	case sectionStats:
 		// Both: fetchStatsCmd feeds the Incident Response block, the other the charts.
 		return tea.Batch(fetchStatsCmd(m.client), fetchDetailStatsCmd(m.client))
 	case sectionArchived:
-		return fetchArchivedIncidentsCmd(m.client)
+		return fetchArchivedIncidentsCmd(m.client, m.activeTeamID)
 	case sectionSchedule:
-		return fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+		return m.fetchScheduleWindowCmd()
 	case sectionUsers:
 		return fetchUsersCmd(m.client)
 	}
 	return nil
 }
 
+// fetchScheduleWindowCmd reloads the schedule window for the schedule's team, or
+// does nothing when the caller belongs to none.
+func (m Model) fetchScheduleWindowCmd() tea.Cmd {
+	team, ok := m.scheduleTeam()
+	if !ok {
+		return nil
+	}
+	return fetchScheduleCmd(m.client, team.ID, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+}
+
 // routeKey passes the key to the active component then to our handler.
 func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	switch m.mode {
@@ -279,6 +373,22 @@ func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	case modeAPIKeyMenu, modeAPIKeyReveal:
 		return m.handleKey(msg)
 
+	case modeLogin:
+		var inputCmd tea.Cmd
+		if !m.loggingIn {
+			m.loginInputs[m.loginFocus], inputCmd = m.loginInputs[m.loginFocus].Update(msg)
+		}
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(inputCmd, ourCmd)
+
+	case modePasswordSet:
+		var inputCmd tea.Cmd
+		if !m.pwLoading {
+			m.pwInputs[m.pwFocus], inputCmd = m.pwInputs[m.pwFocus].Update(msg)
+		}
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(inputCmd, ourCmd)
+
 	default: // modeDashboard
 		if m.connected {
 			switch m.activeSection {
@@ -338,6 +448,10 @@ func (m Model) handleKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		return m.handleUserNotifyEditKey(msg)
 	case modeAPIKeyMenu:
 		return m.handleAPIKeyMenuKey(msg)
+	case modePasswordSet:
+		return m.handlePasswordKey(msg)
+	case modeLogin:
+		return m.handleLoginKey(msg)
 	case modeAPIKeyCreate:
 		return m.handleAPIKeyCreateKey(msg)
 	case modeAPIKeyReveal:
@@ -379,14 +493,27 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		case sectionIncidents:
 			m.incidentFilter = nextFilter(incidentFilters, m.incidentFilter)
 			m.loading = true
-			return m, fetchIncidentsCmd(m.client, m.incidentFilter)
+			return m, fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter)
 		case sectionAlerts:
 			m.alertFilter = nextFilter(alertFilters, m.alertFilter)
 			m.loading = true
-			return m, fetchAlertsCmd(m.client, m.alertFilter)
+			return m, fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter)
 		}
 		return m, nil
 
+	case "L":
+		if !m.connected {
+			return m, nil
+		}
+		m.statusMsg = "Signing out…"
+		return m, logoutCmd(m.client)
+
+	case "T":
+		if !m.connected || len(m.teams) == 0 {
+			return m, nil
+		}
+		return m.switchTeam()
+
 	case "enter":
 		switch m.activeSection {
 		case sectionIncidents:
@@ -419,14 +546,14 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				m.statusMsg = "resolve the incident before archiving it"
 				return m, clearStatusCmd()
 			}
-			return m, archiveIncidentCmd(m.client, inc.ID, m.incidentFilter)
+			return m, archiveIncidentCmd(m.client, inc.ID, m.activeTeamID, m.incidentFilter)
 		case sectionArchived:
 			i := m.archivedTable.Cursor()
 			if i < 0 || i >= len(m.archivedIncidents) {
 				return m, nil
 			}
 			m.archivedLoading = true
-			return m, unarchiveIncidentCmd(m.client, m.archivedIncidents[i].ID)
+			return m, unarchiveIncidentCmd(m.client, m.archivedIncidents[i].ID, m.activeTeamID)
 		}
 		return m, nil
 
@@ -434,16 +561,18 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	case "left", "h":
 		if m.activeSection == sectionSchedule {
 			m.scheduleWindow = m.scheduleWindow.AddDate(0, 0, -7)
-			m.scheduleLoading = true
+			cmd := m.fetchScheduleWindowCmd()
-			return m, fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			m.scheduleLoading = cmd != nil
+			return m, cmd
 		}
 		return m, nil
 
 	case "right", "l":
 		if m.activeSection == sectionSchedule {
 			m.scheduleWindow = m.scheduleWindow.AddDate(0, 0, 7)
-			m.scheduleLoading = true
+			cmd := m.fetchScheduleWindowCmd()
-			return m, fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			m.scheduleLoading = cmd != nil
+			return m, cmd
 		}
 		return m, nil
 
@@ -451,6 +580,9 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionSchedule || !m.connected {
 			return m, nil
 		}
+		if !m.checkScheduleEditable() {
+			return m, clearStatusCmd()
+		}
 		m.pickerAssignWeek = false
 		return m.openUserPicker(pickerSchedule)
 
@@ -458,6 +590,9 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionSchedule || !m.connected {
 			return m, nil
 		}
+		if !m.checkScheduleEditable() {
+			return m, clearStatusCmd()
+		}
 		m.pickerAssignWeek = true
 		return m.openUserPicker(pickerSchedule)
 
@@ -468,7 +603,7 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				return m, nil
 			}
 			cursor := m.scheduleTable.Cursor()
-			if cursor >= len(m.scheduleDays) {
+			if cursor < 0 || cursor >= len(m.scheduleDays) {
 				return m, nil
 			}
 			day := m.scheduleDays[cursor]
@@ -484,9 +619,13 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				return m, nil
 			}
 			cursor := m.userManageTable.Cursor()
-			if cursor >= len(m.users) {
+			if cursor < 0 || cursor >= len(m.users) {
 				return m, nil
 			}
+			if !m.isAdmin {
+				m.statusMsg = "only administrators can delete users"
+				return m, clearStatusCmd()
+			}
 			m.selectedUser = m.users[cursor]
 			m.confirmTarget = confirmDeleteUser
 			m.mode = modeConfirm
@@ -497,6 +636,10 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionUsers || !m.connected {
 			return m, nil
 		}
+		if !m.isAdmin {
+			m.statusMsg = "only administrators can create users"
+			return m, clearStatusCmd()
+		}
 		m.userFormInputs[0].Reset()
 		m.userFormInputs[1].Reset()
 		m.userFormFocus = 0
@@ -510,10 +653,14 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			return m, nil
 		}
 		cursor := m.userManageTable.Cursor()
-		if cursor >= len(m.users) {
+		if cursor < 0 || cursor >= len(m.users) {
 			return m, nil
 		}
 		m.selectedUser = m.users[cursor]
+		if !m.canManageUser(m.selectedUser) {
+			cmd := m.refuseUserAction("notification topic")
+			return m, cmd
+		}
 		// Prefilled with what they have, so editing a topic does not mean
 		// retyping it, and clearing one is a deliberate wipe.
 		m.ntfyTopicInput.SetValue(m.selectedUser.Topic())
@@ -523,6 +670,22 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		return m, nil
 
 	case "k":
+		if m.activeSection != sectionUsers || !m.connected || len(m.users) == 0 {
+			return m, nil
+		}
+		cursor := m.userManageTable.Cursor()
+		if cursor < 0 || cursor >= len(m.users) {
+			return m, nil
+		}
+		m.selectedUser = m.users[cursor]
+		if !m.canManageUser(m.selectedUser) {
+			cmd := m.refuseUserAction("API keys")
+			return m, cmd
+		}
+		m.mode = modeAPIKeyMenu
+		return m, nil
+
+	case "p":
 		if m.activeSection != sectionUsers || !m.connected || len(m.users) == 0 {
 			return m, nil
 		}
@@ -531,20 +694,39 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			return m, nil
 		}
 		m.selectedUser = m.users[cursor]
-		m.mode = modeAPIKeyMenu
+		if !m.canManageUser(m.selectedUser) {
-		return m, nil
+			cmd := m.refuseUserAction("password")
+			return m, cmd
+		}
+		for i := range m.pwInputs {
+			m.pwInputs[i].Reset()
+			m.pwInputs[i].Blur()
+		}
+		m.pwNeedCurrent = false
+		m.pwLoading = true
+		m.mode = modePasswordSet
+		// Whether the form needs the current password depends on who the key
+		// belongs to, which the client does not otherwise know.
+		return m, fetchMeCmd(m.client)
 	}
 
 	return m, nil
 }
 
+// refuseUserAction explains a self-or-admin action declined up front, and is what
+// the status bar clears afterwards. The server refuses these with a 403 anyway.
+func (m *Model) refuseUserAction(what string) tea.Cmd {
+	m.statusMsg = "only administrators can change another user's " + what
+	return clearStatusCmd()
+}
+
 // loadSectionIfEmpty fetches a section's data the first time it is opened.
 func (m *Model) loadSectionIfEmpty() tea.Cmd {
 	switch m.activeSection {
 	case sectionAlerts:
 		if len(m.alerts) == 0 {
 			m.loading = true
-			return fetchAlertsCmd(m.client, m.alertFilter)
+			return fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter)
 		}
 	case sectionStats:
 		if !m.statsLoaded {
@@ -554,12 +736,13 @@ func (m *Model) loadSectionIfEmpty() tea.Cmd {
 	case sectionArchived:
 		if len(m.archivedIncidents) == 0 {
 			m.archivedLoading = true
-			return fetchArchivedIncidentsCmd(m.client)
+			return fetchArchivedIncidentsCmd(m.client, m.activeTeamID)
 		}
 	case sectionSchedule:
 		if len(m.scheduleDays) == 0 {
-			m.scheduleLoading = true
+			cmd := m.fetchScheduleWindowCmd()
-			return fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			m.scheduleLoading = cmd != nil
+			return cmd
 		}
 	case sectionUsers:
 		if len(m.users) == 0 {
@@ -590,6 +773,18 @@ func (m Model) openIncident(inc api.Incident) (Model, tea.Cmd) {
 func (m Model) openUserPicker(target pickerTarget) (Model, tea.Cmd) {
 	m.pickerTarget = target
 	m.mode = modeUserPicker
+	if target == pickerSchedule {
+		// Only the team's own members can go on its rota, so who they are has to
+		// be known before anybody is offered.
+		team, ok := m.scheduleTeam()
+		if !ok {
+			m.mode = modeDashboard
+			return m, nil
+		}
+		m.pickerMembers = nil
+		m.usersLoading = true
+		return m, fetchPickerCmd(m.client, team.ID)
+	}
 	if len(m.users) == 0 {
 		m.usersLoading = true
 		return m, fetchUsersCmd(m.client)
@@ -598,6 +793,63 @@ func (m Model) openUserPicker(target pickerTarget) (Model, tea.Cmd) {
 	return m, nil
 }
 
+// switchTeam steps the active team through all teams, then each of the caller's
+// teams in turn, and reloads what depends on it. Sections that are not on screen
+// are emptied rather than fetched, so they load when next opened; the incident
+// queue is the exception because it is what the caller returns to.
+func (m Model) switchTeam() (Model, tea.Cmd) {
+	next := int64(0)
+	if m.activeTeamID == 0 {
+		next = m.teams[0].ID
+	} else {
+		for i, t := range m.teams {
+			if t.ID == m.activeTeamID && i+1 < len(m.teams) {
+				next = m.teams[i+1].ID
+			}
+		}
+	}
+	m.activeTeamID = next
+
+	m.incidents, m.alerts, m.archivedIncidents = nil, nil, nil
+	m.scheduleEntries, m.scheduleDays, m.currentOnCall = nil, nil, nil
+	m.loading = true
+	m.rebuildIncidentTable()
+	m.rebuildTable()
+	m.rebuildArchivedTable()
+	m.rebuildScheduleTable()
+
+	label := "all teams"
+	if t, ok := m.activeTeam(); ok {
+		label = t.Name
+	}
+	m.statusMsg = "Team: " + label
+
+	cmds := []tea.Cmd{clearStatusCmd()}
+	if m.activeSection != sectionIncidents {
+		cmds = append(cmds, fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter))
+	}
+	cmds = append(cmds, m.refreshActiveSection())
+	if m.activeSection == sectionSchedule {
+		m.scheduleLoading = true
+	}
+	return m, tea.Batch(cmds...)
+}
+
+// checkScheduleEditable says why a schedule change is refused, in the status
+// bar, and reports whether it may go ahead. The server enforces the same rule.
+func (m *Model) checkScheduleEditable() bool {
+	team, ok := m.scheduleTeam()
+	switch {
+	case !ok:
+		m.statusMsg = "you are not in any team"
+	case !m.canEditSchedule(team):
+		m.statusMsg = "only owners of " + team.Name + " can change its schedule"
+	default:
+		return true
+	}
+	return false
+}
+
 // nextFilter advances a filter cycle, wrapping at the end.
 func nextFilter(cycle []string, current string) string {
 	for i, f := range cycle {
@@ -681,10 +933,10 @@ func (m Model) handleIncidentDetailKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if inc.ArchivedAt != nil {
 			m.archivedLoading = true
 			m.mode = modeDashboard
-			return m, unarchiveIncidentCmd(m.client, inc.ID)
+			return m, unarchiveIncidentCmd(m.client, inc.ID, m.activeTeamID)
 		}
 		m.mode = modeDashboard
-		return m, archiveIncidentCmd(m.client, inc.ID, m.incidentFilter)
+		return m, archiveIncidentCmd(m.client, inc.ID, m.activeTeamID, m.incidentFilter)
 
 	case "c":
 		m.mode = modeNote
@@ -822,6 +1074,7 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		}
 		m.pendingDeleteID = 0
 		m.pendingDeleteEntry = nil
+		m.pendingAssign = nil
 		return m, nil
 	}
 
@@ -843,7 +1096,8 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeDashboard
 		m.pendingDeleteEntry = nil
 		m.scheduleLoading = true
-		return m, deleteScheduleEntryCmd(m.client, entry.ID,
+		team, _ := m.scheduleTeam()
+		return m, deleteScheduleEntryCmd(m.client, team.ID, entry.ID,
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 
 	case confirmDeleteUser:
@@ -851,6 +1105,18 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeDashboard
 		m.usersLoading = true
 		return m, deleteUserCmd(m.client, userID)
+
+	case confirmReassignSchedule:
+		p := m.pendingAssign
+		m.mode = modeDashboard
+		m.pendingAssign = nil
+		if p == nil {
+			return m, nil
+		}
+		m.scheduleLoading = true
+		team, _ := m.scheduleTeam()
+		return m, assignScheduleCmd(m.client, team.ID, p.userID, p.dates, true,
+			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
 	return m, nil
@@ -870,10 +1136,11 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 
 	case "enter":
 		cursor := m.userPickerTable.Cursor()
-		if cursor < 0 || cursor >= len(m.users) {
+		pickable := m.pickerUsers()
+		if cursor < 0 || cursor >= len(pickable) {
 			return m, nil
 		}
-		user := m.users[cursor]
+		user := pickable[cursor]
 
 		if m.pickerTarget == pickerIncidentAssignee {
 			m.mode = modeIncidentDetail
@@ -881,7 +1148,7 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		}
 
 		scheduleCursor := m.scheduleTable.Cursor()
-		if scheduleCursor >= len(m.scheduleDays) {
+		if scheduleCursor < 0 || scheduleCursor >= len(m.scheduleDays) {
 			m.mode = modeDashboard
 			return m, nil
 		}
@@ -899,15 +1166,85 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		} else {
 			dates = []string{d.Format("2006-01-02")}
 		}
+
+		// The server refuses a date somebody else holds, so ask before taking
+		// it rather than letting the request come back 409. The answer is
+		// already on screen — no round trip is needed to work out who loses
+		// their shift.
+		taken, holders := m.scheduleConflicts(dates, user.ID)
+		if len(taken) > 0 {
+			m.pendingAssign = &pendingAssign{
+				userID:   user.ID,
+				username: user.Username,
+				dates:    dates,
+				taken:    taken,
+				holders:  holders,
+			}
+			m.confirmTarget = confirmReassignSchedule
+			m.mode = modeConfirm
+			return m, nil
+		}
+
 		m.mode = modeDashboard
 		m.scheduleLoading = true
-		return m, assignScheduleCmd(m.client, user.ID, dates,
+		// Nobody else loses anything, but the server rejects any date that
+		// already exists — including days this same person already holds, which
+		// is a no-op worth letting through silently.
+		team, _ := m.scheduleTeam()
+		return m, assignScheduleCmd(m.client, team.ID, user.ID, dates, m.scheduleOccupied(dates),
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
 	return m, nil
 }
 
+// scheduleConflicts reports which of dates are already held by somebody other
+// than newUserID, and the distinct names holding them.
+//
+// Days the target already owns are not conflicts — reassigning somebody to
+// their own shift takes nothing from anyone, and prompting for it would be
+// noise. The server still needs replace for those, since it rejects any date
+// that exists.
+func (m Model) scheduleConflicts(dates []string, newUserID int64) (taken, holders []string) {
+	held := make(map[string]api.ScheduleEntry, len(m.scheduleDays))
+	for _, d := range m.scheduleDays {
+		if d.entry != nil {
+			held[d.entry.Date] = *d.entry
+		}
+	}
+	seen := make(map[string]bool)
+	for _, date := range dates {
+		e, ok := held[date]
+		if !ok || e.UserID == newUserID {
+			continue
+		}
+		taken = append(taken, date)
+		if !seen[e.Username] {
+			seen[e.Username] = true
+			holders = append(holders, e.Username)
+		}
+	}
+	return taken, holders
+}
+
+// scheduleOccupied reports whether any of dates already has an entry at all,
+// including one belonging to the incoming user. That is what decides whether
+// the request needs replace, as opposed to whether it needs confirming.
+func (m Model) scheduleOccupied(dates []string) bool {
+	held := make(map[string]bool, len(m.scheduleDays))
+	for _, d := range m.scheduleDays {
+		if d.entry != nil {
+			held[d.entry.Date] = true
+		}
+	}
+	for _, date := range dates {
+		if held[date] {
+			return true
+		}
+	}
+	return false
+}
+
 // ── User management ───────────────────────────────────────────────────────────
 
 func (m Model) handleUserCreateKey(msg tea.KeyMsg) (Model, tea.Cmd) {
@@ -1046,3 +1383,185 @@ func (m Model) handleAPIKeyRevokeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 
 	return m, nil
 }
+
+// ── Set password ──────────────────────────────────────────────────────────────
+
+// pwFields is the set-password form's fields in tab order.
+func (m Model) pwFields() []int {
+	if m.pwNeedCurrent {
+		return []int{pwCurrent, pwNew, pwRepeat}
+	}
+	return []int{pwNew, pwRepeat}
+}
+
+func (m *Model) blurPasswordForm() {
+	for i := range m.pwInputs {
+		m.pwInputs[i].Blur()
+	}
+}
+
+func (m Model) handlePasswordKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "esc":
+		m.blurPasswordForm()
+		m.pwLoading = false
+		m.mode = modeDashboard
+		return m, nil
+	}
+	if m.pwLoading {
+		return m, nil
+	}
+
+	switch msg.String() {
+	case "tab", "shift+tab":
+		fields := m.pwFields()
+		i := slices.Index(fields, m.pwFocus)
+		step := 1
+		if msg.String() == "shift+tab" {
+			step = len(fields) - 1
+		}
+		m.pwInputs[m.pwFocus].Blur()
+		m.pwFocus = fields[(i+step)%len(fields)]
+		m.pwInputs[m.pwFocus].Focus()
+		return m, nil
+
+	case "enter":
+		password := m.pwInputs[pwNew].Value()
+		switch {
+		case m.pwNeedCurrent && m.pwInputs[pwCurrent].Value() == "":
+			m.statusMsg = "enter your current password"
+			return m, clearStatusCmd()
+		case len(password) < minPasswordLen:
+			m.statusMsg = fmt.Sprintf("the password must be at least %d characters", minPasswordLen)
+			return m, clearStatusCmd()
+		case password != m.pwInputs[pwRepeat].Value():
+			m.statusMsg = "the two new passwords do not match"
+			return m, clearStatusCmd()
+		}
+		current := ""
+		if m.pwNeedCurrent {
+			current = m.pwInputs[pwCurrent].Value()
+		}
+		m.blurPasswordForm()
+		m.mode = modeDashboard
+		m.statusMsg = "Setting password…"
+		return m, setPasswordCmd(m.client, m.selectedUser, password, current)
+	}
+	return m, nil
+}
+
+// ── Sign in ───────────────────────────────────────────────────────────────────
+
+// msgError digs the error out of the messages that carry one, so the 401 check
+// in Update covers them all in one place.
+func msgError(msg tea.Msg) error {
+	switch msg := msg.(type) {
+	case connectErrMsg:
+		return msg.err
+	case fetchDataErrMsg:
+		return msg.err
+	case detailErrMsg:
+		return msg.err
+	case actionErrMsg:
+		return msg.err
+	case detailStatsErrMsg:
+		return msg.err
+	case scheduleFetchErrMsg:
+		return msg.err
+	case scheduleActionErrMsg:
+		return msg.err
+	case userActionErrMsg:
+		return msg.err
+	}
+	return nil
+}
+
+// requireLogin returns to the sign-in form with everything the previous session
+// loaded dropped, so a different account never sees the last one's incidents.
+func (m Model) requireLogin(note string) Model {
+	name := m.loginInputs[loginUsername].Value()
+	fresh := NewModel(m.client, m.serverURL, m.refreshInterval, m.theme)
+	fresh.width, fresh.height = m.width, m.height
+	fresh.defaultTeam = m.defaultTeam
+	fresh.ticking = m.ticking
+	fresh.mode = modeLogin
+	fresh.loginInputs[loginUsername].SetValue(name)
+	fresh.loginNote = note
+	fresh.focusLogin(loginUsername)
+	if name != "" {
+		fresh.focusLogin(loginPassword)
+	}
+	fresh.rebuildIncidentTable()
+	fresh.rebuildTable()
+	fresh.rebuildArchivedTable()
+	fresh.rebuildScheduleTable()
+	fresh.rebuildUserPickerTable()
+	fresh.rebuildUserManageTable()
+	return fresh
+}
+
+func (m *Model) blurLoginForm() {
+	for i := range m.loginInputs {
+		m.loginInputs[i].Blur()
+	}
+}
+
+func (m *Model) focusLogin(field int) {
+	m.blurLoginForm()
+	m.loginFocus = field
+	m.loginInputs[field].Focus()
+}
+
+// loginErrorText turns a failed sign-in into something to act on. The server
+// answers a wrong password, an unknown user and an account with no password with
+// the same 401, so the last one has to be named here or it reads as a typo.
+func loginErrorText(err error) string {
+	var se *api.StatusError
+	if errors.As(err, &se) {
+		switch se.Code {
+		case http.StatusUnauthorized:
+			return "invalid username or password — an account with no password cannot sign in; set one in the web UI first"
+		case http.StatusTooManyRequests:
+			return "too many attempts — wait a few minutes and try again"
+		}
+	}
+	return err.Error()
+}
+
+func (m Model) handleLoginKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "ctrl+c", "esc":
+		return m, tea.Quit
+	}
+	if m.loggingIn {
+		return m, nil
+	}
+
+	switch msg.String() {
+	case "tab", "shift+tab", "down", "up":
+		next := loginPassword
+		if m.loginFocus == loginPassword {
+			next = loginUsername
+		}
+		m.focusLogin(next)
+		return m, nil
+
+	case "enter":
+		username := strings.TrimSpace(m.loginInputs[loginUsername].Value())
+		password := m.loginInputs[loginPassword].Value()
+		switch {
+		case username == "":
+			m.loginErr = "enter your username"
+			m.focusLogin(loginUsername)
+			return m, nil
+		case password == "":
+			m.loginErr = "enter your password"
+			m.focusLogin(loginPassword)
+			return m, nil
+		}
+		m.loggingIn = true
+		m.loginErr = ""
+		return m, loginCmd(m.client, m.serverURL, username, password)
+	}
+	return m, nil
+}

internal/tui/update_test.go

@@ -5,8 +5,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // press sends one key and returns the resulting model and command. A nil command
@@ -31,9 +32,10 @@ func press(t *testing.T, m Model, key string) (Model, tea.Cmd) {
 
 // sized returns a connected model with a usable window, which most handlers need.
 func sized() Model {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.connected = true
+	m.isAdmin = true // most handlers are being tested for what they do, not who may
 	return m
 }
 
@@ -309,6 +311,111 @@ func TestDeleteNote_ConfirmsThenActs(t *testing.T) {
 	}
 }
 
+// ── Schedule reassignment ─────────────────────────────────────────────────
+
+// pickingOnCall opens the user picker for the schedule day at dayIndex, which
+// is where a reassignment actually starts.
+func pickingOnCall(entries []api.ScheduleEntry, dayIndex int, week bool) Model {
+	m := scheduledWeek(entries)
+	m.users = []api.User{
+		{ID: 1, Username: "niklas", Email: "n@example.com"},
+		{ID: 2, Username: "alex", Email: "a@example.com"},
+	}
+	m.pickerTarget = pickerSchedule
+	m.pickerMembers = map[int64]bool{1: true, 2: true}
+	m.rebuildUserPickerTable()
+	m.scheduleTable.SetCursor(dayIndex)
+	m.pickerAssignWeek = week
+	m.pickerTarget = pickerSchedule
+	m.mode = modeUserPicker
+	m.userPickerTable.SetCursor(1) // alex
+	return m
+}
+
+// The bug: a day somebody already holds could not be handed to anybody else.
+// The server refuses it, so the TUI has to ask first and then say so.
+func TestSchedule_ReassigningATakenDayAsksFirst(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+
+	m, cmd := press(t, m, "enter")
+
+	if m.mode != modeConfirm || m.confirmTarget != confirmReassignSchedule {
+		t.Fatalf("expected a reassignment confirmation, got mode %v target %v",
+			m.mode, m.confirmTarget)
+	}
+	if cmd != nil {
+		t.Error("expected nothing sent to the server before confirming")
+	}
+	mustContain(t, m.confirmPrompt(), "This day is assigned to niklas", "Reassign to alex?")
+}
+
+func TestSchedule_ReassignConfirmedSends(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+	m, _ = press(t, m, "enter")
+
+	m, cmd := press(t, m, "y")
+	if cmd == nil {
+		t.Fatal("expected the confirmed reassignment to be sent")
+	}
+	if m.mode != modeDashboard {
+		t.Errorf("expected a return to the dashboard, got mode %v", m.mode)
+	}
+	if m.pendingAssign != nil {
+		t.Error("expected the pending assignment cleared")
+	}
+}
+
+// Declining must leave the rota alone — that is the whole point of the guard.
+func TestSchedule_ReassignDeclinedSendsNothing(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+	m, _ = press(t, m, "enter")
+
+	m, cmd := press(t, m, "n")
+	if cmd != nil {
+		t.Error("expected nothing sent when the reassignment is declined")
+	}
+	if m.pendingAssign != nil {
+		t.Error("expected the pending assignment discarded")
+	}
+}
+
+// A free day is the path that always worked, and must not grow a prompt.
+func TestSchedule_AssigningAFreeDayDoesNotAsk(t *testing.T) {
+	m := pickingOnCall(nil, 0, false)
+
+	m, cmd := press(t, m, "enter")
+	if m.mode != modeDashboard {
+		t.Errorf("expected no prompt for a free day, got mode %v", m.mode)
+	}
+	if cmd == nil {
+		t.Error("expected the assignment to be sent straight away")
+	}
+}
+
+// The week case is the one that was worst: a single taken day rejected all
+// seven. One prompt now covers the lot, and it says how much is being taken.
+func TestSchedule_ReassigningAPartlyTakenWeekAsksOnce(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-28", UserID: 1, Username: "niklas"},
+		{ID: 2, Date: "2026-07-30", UserID: 3, Username: "sam"},
+	}, 0, true)
+
+	m, _ = press(t, m, "enter")
+	if m.confirmTarget != confirmReassignSchedule {
+		t.Fatalf("expected one confirmation for the week, got target %v", m.confirmTarget)
+	}
+	if got := len(m.pendingAssign.dates); got != 7 {
+		t.Errorf("expected all 7 days in the assignment, got %d", got)
+	}
+	mustContain(t, m.confirmPrompt(), "2 of 7 days are assigned to niklas and sam")
+}
+
 // ── Ntfy topic ────────────────────────────────────────────────────────────
 
 // onUsers puts the model in the Users section with a loaded table.
@@ -573,3 +680,296 @@ func containsAll(s string, subs ...string) bool {
 	}
 	return true
 }
+
+// The bug: assigning an on-call week panicked with "index out of range [-1]"
+// on a perfectly normal schedule, as long as nobody had moved the cursor first.
+//
+// The cause is not in this package. bubbles' SetRows clamps the cursor down but
+// never up, so the empty rebuild every table gets from the first WindowSizeMsg
+// -- which arrives before any fetch returns -- pins the cursor at -1, and
+// loading real rows afterwards leaves it there. Pressing up or down hid it,
+// which is why every existing test missed it: they all call SetCursor, and
+// SetCursor clamps.
+//
+// So this test must NOT touch the cursor. It reproduces the real order of
+// events: size first, data second, keys third.
+func TestSchedule_AssignWeekAfterStartupSizingDoesNotPanic(t *testing.T) {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.connected = true
+	m.isAdmin = true
+	m.teams = []api.Team{{ID: 1, Name: "Ops", Role: api.RoleOwner}}
+	m.activeSection = sectionSchedule
+	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
+
+	// 1. Terminal size arrives while every table is still empty.
+	next, _ := m.Update(tea.WindowSizeMsg{Width: 120, Height: 40})
+	m = next.(Model)
+
+	// 2. The schedule and the user list land.
+	next, _ = m.Update(scheduleFetchedMsg{entries: []api.ScheduleEntry{}})
+	m = next.(Model)
+	next, _ = m.Update(usersFetchedMsg{users: []api.User{
+		{ID: 1, Username: "niklas", Email: "n@example.com"},
+	}})
+	m = next.(Model)
+
+	if got := m.scheduleTable.Cursor(); got < 0 {
+		t.Fatalf("schedule cursor is %d after loading %d days; a populated table must have a usable cursor",
+			got, len(m.scheduleDays))
+	}
+
+	// 3. Assign the week to the first user, without ever moving a cursor.
+	m, _ = press(t, m, "W")
+	if m.mode != modeUserPicker {
+		t.Fatalf("W did not open the user picker, got mode %v", m.mode)
+	}
+	// The picker waits for the team's members before offering anybody.
+	next, _ = m.Update(pickerReadyMsg{
+		users:   []api.User{{ID: 1, Username: "niklas", Email: "n@example.com"}},
+		members: map[int64]bool{1: true},
+	})
+	m = next.(Model)
+	m, _ = press(t, m, "enter") // panicked here
+
+	if m.mode == modeUserPicker {
+		t.Fatal("enter left the picker open; the assignment never went anywhere")
+	}
+}
+
+// ── Teams ─────────────────────────────────────────────────────────────────
+
+func twoTeams() []api.Team {
+	return []api.Team{
+		{ID: 1, Name: "Ops", Role: api.RoleOwner},
+		{ID: 2, Name: "Dev", Role: api.RoleMember},
+	}
+}
+
+func TestConnected_LoadsTeamsAndWhoIAm(t *testing.T) {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	next, _ := m.Update(connectedMsg{
+		teams: twoTeams(),
+		me:    api.Me{User: api.User{ID: 7, IsAdmin: true}},
+	})
+	m = next.(Model)
+	if len(m.teams) != 2 || m.meID != 7 || !m.isAdmin {
+		t.Errorf("expected teams, id and admin flag to be kept, got %+v %d %v", m.teams, m.meID, m.isAdmin)
+	}
+	if m.activeTeamID != 0 {
+		t.Errorf("with no default team every team shows, got active %d", m.activeTeamID)
+	}
+}
+
+func TestConnected_DefaultTeamFromConfig(t *testing.T) {
+	for _, want := range []string{"dev", "2"} { // by name, any case, or by id
+		m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark).WithDefaultTeam(want)
+		next, _ := m.Update(connectedMsg{teams: twoTeams()})
+		if got := next.(Model).activeTeamID; got != 2 {
+			t.Errorf("default team %q: expected team 2, got %d", want, got)
+		}
+	}
+
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark).WithDefaultTeam("nope")
+	next, cmd := m.Update(connectedMsg{teams: twoTeams()})
+	m = next.(Model)
+	if m.activeTeamID != 0 || !strings.Contains(m.statusMsg, "nope") {
+		t.Errorf("an unknown default should fall back to all teams and say so, got %d %q",
+			m.activeTeamID, m.statusMsg)
+	}
+	if cmd == nil {
+		t.Error("expected the initial fetches to still be issued")
+	}
+}
+
+func TestSwitchTeam_CyclesAllThenEachTeam(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	var seen []int64
+	for i := 0; i < 4; i++ {
+		var cmd tea.Cmd
+		m, cmd = press(t, m, "T")
+		if cmd == nil {
+			t.Fatal("switching team should reload")
+		}
+		seen = append(seen, m.activeTeamID)
+	}
+	want := []int64{1, 2, 0, 1}
+	for i := range want {
+		if seen[i] != want[i] {
+			t.Fatalf("expected the cycle %v, got %v", want, seen)
+		}
+	}
+}
+
+func TestSwitchTeam_ClearsRowsFromTheOtherTeam(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	m.incidents = []api.Incident{{ID: 1, Title: "old", TeamName: "Ops"}}
+	m.rebuildIncidentTable()
+	m, _ = press(t, m, "T")
+	if len(m.incidents) != 0 {
+		t.Errorf("the previous team's incidents must not linger, got %d", len(m.incidents))
+	}
+	if !strings.Contains(m.statusMsg, "Ops") {
+		t.Errorf("expected the status bar to name the team, got %q", m.statusMsg)
+	}
+}
+
+func TestSwitchTeam_NoTeamsDoesNothing(t *testing.T) {
+	m, cmd := press(t, sized(), "T")
+	if cmd != nil || m.activeTeamID != 0 {
+		t.Errorf("without teams T has nothing to switch to")
+	}
+}
+
+func TestScheduleTeam(t *testing.T) {
+	m := sized()
+	if _, ok := m.scheduleTeam(); ok {
+		t.Error("no teams means no schedule")
+	}
+	m.teams = []api.Team{{ID: 2, Name: "Dev", Role: api.RoleMember}, {ID: 1, Name: "Ops", Role: api.RoleOwner}}
+	if tm, _ := m.scheduleTeam(); tm.ID != 1 {
+		t.Errorf("with all teams showing the one the caller owns is used, got %d", tm.ID)
+	}
+	m.activeTeamID = 2
+	if tm, _ := m.scheduleTeam(); tm.ID != 2 {
+		t.Errorf("the active team wins, got %d", tm.ID)
+	}
+}
+
+func TestSchedule_OnlyOwnersAndAdminsEdit(t *testing.T) {
+	m := scheduledWeek(nil)
+	m.isAdmin = false
+	m.teams = []api.Team{{ID: 1, Name: "Ops", Role: api.RoleMember}}
+	m, cmd := press(t, m, "+")
+	if m.mode == modeUserPicker {
+		t.Fatal("a plain member must not get as far as the picker")
+	}
+	if !strings.Contains(m.statusMsg, "owners of Ops") {
+		t.Errorf("expected the reason in the status bar, got %q", m.statusMsg)
+	}
+	if cmd == nil {
+		t.Error("the message should clear itself")
+	}
+
+	m.isAdmin = true // administrators may edit any team's rota
+	m.statusMsg = ""
+	m, _ = press(t, m, "+")
+	if m.mode != modeUserPicker {
+		t.Errorf("an administrator should reach the picker, got mode %v", m.mode)
+	}
+}
+
+// The picker fetches the team's members, and offers nobody until they arrive:
+// the server answers 404 for anyone else.
+func TestSchedulePicker_OffersOnlyTeamMembers(t *testing.T) {
+	m := scheduledWeek(nil)
+	m, cmd := press(t, m, "+")
+	if cmd == nil || !m.usersLoading {
+		t.Fatal("opening the picker should start loading the members")
+	}
+	if got := len(m.pickerUsers()); got != 0 {
+		t.Errorf("nobody should be offered before the members are known, got %d", got)
+	}
+
+	disabled := time.Now()
+	next, _ := m.Update(pickerReadyMsg{
+		users: []api.User{
+			{ID: 1, Username: "niklas"},
+			{ID: 2, Username: "outsider"},
+			{ID: 3, Username: "gone", DisabledAt: &disabled},
+		},
+		members: map[int64]bool{1: true, 3: true},
+	})
+	m = next.(Model)
+	got := m.pickerUsers()
+	if len(got) != 1 || got[0].Username != "niklas" {
+		t.Errorf("expected only the enabled member, got %+v", got)
+	}
+	if rows := m.userPickerTable.Rows(); len(rows) != 1 {
+		t.Errorf("the table should match, got %d rows", len(rows))
+	}
+}
+
+func TestUsers_NonAdminsCannotCreateOrDelete(t *testing.T) {
+	m := threeUsers()
+	m.isAdmin = false
+	m.meID = 1
+	m, _ = press(t, m, "n")
+	if m.mode != modeDashboard || !strings.Contains(m.statusMsg, "administrators") {
+		t.Errorf("n should be refused with a reason, got mode %v %q", m.mode, m.statusMsg)
+	}
+	m, _ = press(t, m, "d")
+	if m.mode != modeDashboard {
+		t.Errorf("d should not ask to delete for a non-admin, got mode %v", m.mode)
+	}
+}
+
+func TestUsers_NonAdminManagesOnlyThemselves(t *testing.T) {
+	m := threeUsers() // cursor on erik, id 3
+	m.isAdmin = false
+	m.meID = 1
+	for _, key := range []string{"t", "k", "p"} {
+		next, _ := press(t, m, key)
+		if next.mode != modeDashboard {
+			t.Errorf("%s on somebody else's row should be refused, got mode %v", key, next.mode)
+		}
+		if !strings.Contains(next.statusMsg, "another user's") {
+			t.Errorf("%s: expected the reason, got %q", key, next.statusMsg)
+		}
+	}
+
+	m.userManageTable.SetCursor(0) // niklas, id 1: themselves
+	if next, _ := press(t, m, "k"); next.mode != modeAPIKeyMenu {
+		t.Errorf("a user may manage their own keys, got mode %v", next.mode)
+	}
+}
+
+func TestUserFlags(t *testing.T) {
+	now := time.Now()
+	cases := []struct {
+		u    api.User
+		want string
+	}{
+		{api.User{}, "—"},
+		{api.User{IsAdmin: true}, "admin"},
+		{api.User{DisabledAt: &now}, "disabled"},
+		{api.User{IsAdmin: true, DisabledAt: &now}, "admin,disabled"},
+	}
+	for _, c := range cases {
+		if got := userFlags(c.u); got != c.want {
+			t.Errorf("userFlags(%+v) = %q, want %q", c.u, got, c.want)
+		}
+	}
+}
+
+// Rebuilding a list on every refresh must not send the cursor back to the top.
+func TestRefresh_KeepsTheCursor(t *testing.T) {
+	m := sized()
+	m.incidents = []api.Incident{{ID: 1}, {ID: 2}, {ID: 3}}
+	m.rebuildIncidentTable()
+	m.incidentTable.SetCursor(2)
+	next, _ := m.Update(incidentsFetchedMsg{incidents: m.incidents})
+	if got := next.(Model).incidentTable.Cursor(); got != 2 {
+		t.Errorf("expected the cursor to stay on row 2, got %d", got)
+	}
+}
+
+// The Team column comes and goes as the team switches, and the table must
+// survive its column count changing under rows that are already loaded.
+func TestTeamColumn_AppearsWithoutPanicking(t *testing.T) {
+	m := sized()
+	m.incidents = []api.Incident{{ID: 1, Title: "a", TeamName: "Ops"}}
+	m.rebuildIncidentTable()
+	m.teams = twoTeams()
+	m.rebuildIncidentTable() // five columns become six over a five-cell row
+	if got := len(m.incidentTable.Columns()); got != 6 {
+		t.Errorf("expected a Team column across two teams, got %d columns", got)
+	}
+	m.activeTeamID = 1
+	m.rebuildIncidentTable()
+	if got := len(m.incidentTable.Columns()); got != 5 {
+		t.Errorf("expected the Team column to go when one team is chosen, got %d", got)
+	}
+}

internal/tui/users_test.go

@@ -0,0 +1,204 @@
+package tui
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// threeUsers is the Users section with the cursor on the last of three users.
+func threeUsers() Model {
+	m := onUsers([]api.User{
+		{ID: 1, Username: "niklas"},
+		{ID: 2, Username: "anna"},
+		{ID: 3, Username: "erik"},
+	})
+	m.userManageTable.SetCursor(2)
+	return m
+}
+
+// The table used to see k before the section did, take it as "up", and the
+// handler then opened API keys for the user above the one selected.
+func TestUsers_APIKeysOpenForTheSelectedUser(t *testing.T) {
+	m, _ := press(t, threeUsers(), "k")
+	if m.mode != modeAPIKeyMenu {
+		t.Fatalf("expected the API key menu, got mode %v", m.mode)
+	}
+	if m.selectedUser.Username != "erik" {
+		t.Errorf("API keys opened for %s, want erik", m.selectedUser.Username)
+	}
+}
+
+// Same collision with d, which the table read as half a page down: the delete
+// confirmation named a different user than the one under the cursor.
+func TestUsers_DeleteTargetsTheSelectedUser(t *testing.T) {
+	m := threeUsers()
+	m.userManageTable.SetCursor(0)
+	m, _ = press(t, m, "d")
+	if m.mode != modeConfirm || m.selectedUser.Username != "niklas" {
+		t.Errorf("delete asked about %q in mode %v, want niklas", m.selectedUser.Username, m.mode)
+	}
+}
+
+func TestSchedule_DeleteTargetsTheSelectedDay(t *testing.T) {
+	m := sized()
+	m.activeSection = sectionSchedule
+	m.scheduleEntries = []api.ScheduleEntry{
+		{ID: 10, UserID: 1, Username: "niklas", Date: m.scheduleWindow.Format("2006-01-02")},
+		{ID: 11, UserID: 2, Username: "anna", Date: m.scheduleWindow.AddDate(0, 0, 1).Format("2006-01-02")},
+	}
+	m.scheduleDays = buildScheduleDays(m.scheduleWindow, m.scheduleEntries)
+	m.rebuildScheduleTable()
+	m.scheduleTable.SetCursor(0)
+	m, _ = press(t, m, "d")
+	if m.pendingDeleteEntry == nil || m.pendingDeleteEntry.ID != 10 {
+		t.Errorf("schedule delete targeted %+v, want entry 10", m.pendingDeleteEntry)
+	}
+}
+
+// f cycles the filter; it must not also page the cursor down.
+func TestFilter_DoesNotMoveTheCursor(t *testing.T) {
+	m := sized()
+	m.incidents = make([]api.Incident, 40)
+	for i := range m.incidents {
+		m.incidents[i] = api.Incident{ID: int64(i + 1), Title: "x", Status: api.StatusTriggered, TriggeredAt: time.Now()}
+	}
+	m.rebuildIncidentTable()
+	m, _ = press(t, m, "f")
+	if c := m.incidentTable.Cursor(); c != 0 {
+		t.Errorf("f moved the cursor to %d", c)
+	}
+}
+
+// The arrow keys still move the users table, now that k is an action there.
+func TestUsers_ArrowKeysStillNavigate(t *testing.T) {
+	m := threeUsers()
+	next, _ := m.Update(keyUp())
+	if c := next.(Model).userManageTable.Cursor(); c != 1 {
+		t.Errorf("up arrow left the cursor on %d, want 1", c)
+	}
+}
+
+func TestPassword_OpensForTheSelectedUserAndLooksUpWhoIAm(t *testing.T) {
+	m, cmd := press(t, threeUsers(), "p")
+	if m.mode != modePasswordSet || m.selectedUser.Username != "erik" {
+		t.Fatalf("expected the password form for erik, got mode %v for %q", m.mode, m.selectedUser.Username)
+	}
+	if !m.pwLoading || cmd == nil {
+		t.Error("the form should look up /api/me before it is usable")
+	}
+	if !strings.Contains(m.View(), "Checking who this key belongs to") {
+		t.Error("the form should say it is waiting")
+	}
+}
+
+func TestPassword_SomeoneElseNeedsNoCurrentPassword(t *testing.T) {
+	m, _ := press(t, threeUsers(), "p")
+	next, _ := m.Update(meFetchedMsg{me: api.Me{User: api.User{ID: 1}, HasPassword: true}})
+	m = next.(Model)
+	if m.pwNeedCurrent || m.pwFocus != pwNew {
+		t.Errorf("setting erik's password as niklas should not ask for a current one")
+	}
+	if strings.Contains(m.View(), "Current password") {
+		t.Error("the current-password field should be hidden")
+	}
+}
+
+func TestPassword_OwnExistingPasswordNeedsCurrent(t *testing.T) {
+	m := threeUsers()
+	m.userManageTable.SetCursor(0)
+	m, _ = press(t, m, "p")
+	next, _ := m.Update(meFetchedMsg{me: api.Me{User: api.User{ID: 1}, HasPassword: true}})
+	m = next.(Model)
+	if !m.pwNeedCurrent || m.pwFocus != pwCurrent {
+		t.Fatal("changing your own existing password should ask for the current one first")
+	}
+	m = typeInto(t, m, "correct horse")
+	m, _ = press(t, m, "tab")
+	m = typeInto(t, m, "a brand new secret")
+	m, _ = press(t, m, "tab")
+	m = typeInto(t, m, "a brand new secret")
+	m, cmd := press(t, m, "enter")
+	if cmd == nil || m.mode != modeDashboard {
+		t.Errorf("a complete form should submit (mode %v)", m.mode)
+	}
+}
+
+func TestPassword_OwnFirstPasswordNeedsNoCurrent(t *testing.T) {
+	m := threeUsers()
+	m.userManageTable.SetCursor(0)
+	m, _ = press(t, m, "p")
+	next, _ := m.Update(meFetchedMsg{me: api.Me{User: api.User{ID: 1}, HasPassword: false}})
+	if next.(Model).pwNeedCurrent {
+		t.Error("there is no current password to ask for yet")
+	}
+}
+
+func TestPassword_RejectsBeforeSending(t *testing.T) {
+	cases := []struct{ name, pw, repeat, want string }{
+		{"too short", "short", "short", "at least 10"},
+		{"mismatch", "a brand new secret", "a different secret", "do not match"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			m, _ := press(t, threeUsers(), "p")
+			next, _ := m.Update(meFetchedMsg{me: api.Me{User: api.User{ID: 1}}})
+			m = typeInto(t, next.(Model), tc.pw)
+			m, _ = press(t, m, "tab")
+			m = typeInto(t, m, tc.repeat)
+			m, cmd := press(t, m, "enter")
+			if m.mode != modePasswordSet {
+				t.Error("the form should stay open")
+			}
+			if !strings.Contains(m.statusMsg, tc.want) {
+				t.Errorf("status %q should mention %q", m.statusMsg, tc.want)
+			}
+			if cmd == nil {
+				return
+			}
+			// Only the clear-status timer may be scheduled, never a request.
+			if _, ok := cmd().(clearStatusMsg); !ok {
+				t.Error("nothing should be sent to the server")
+			}
+		})
+	}
+}
+
+func TestPassword_EscapeCancels(t *testing.T) {
+	m, _ := press(t, threeUsers(), "p")
+	m, _ = press(t, m, "esc")
+	if m.mode != modeDashboard {
+		t.Errorf("esc should close the form, got mode %v", m.mode)
+	}
+	// A lookup arriving after the form closed must not reopen anything.
+	next, _ := m.Update(meFetchedMsg{me: api.Me{User: api.User{ID: 3}, HasPassword: true}})
+	if next.(Model).mode != modeDashboard {
+		t.Error("a late /api/me answer reopened the form")
+	}
+}
+
+func TestPassword_ErrorClosesTheFormWithAMessage(t *testing.T) {
+	m, _ := press(t, threeUsers(), "p")
+	next, _ := m.Update(userActionErrMsg{errTest("server returned 403: current password is incorrect")})
+	m = next.(Model)
+	if m.mode != modeDashboard || !strings.Contains(m.statusMsg, "current password is incorrect") {
+		t.Errorf("expected the server's message on the dashboard, got %q in mode %v", m.statusMsg, m.mode)
+	}
+}
+
+func typeInto(t *testing.T, m Model, s string) Model {
+	t.Helper()
+	next, _ := m.Update(runes(s))
+	return next.(Model)
+}
+
+func runes(s string) tea.KeyMsg { return tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune(s)} }
+
+func keyUp() tea.KeyMsg { return tea.KeyMsg{Type: tea.KeyUp} }
+
+type errTest string
+
+func (e errTest) Error() string { return string(e) }

internal/tui/view.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
 	"github.com/charmbracelet/lipgloss"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // Order must match the section constants — renderTabs indexes this by ordinal.
@@ -26,40 +26,73 @@ func (m Model) View() string {
 }
 
 func (m Model) renderHeader() string {
-	title := styleHeader.Render("terdut-tui")
+	title := m.styles.Header.Render("terdut-tui")
-	right := styleMuted.Render(m.serverURL)
+	if len(m.teams) > 0 {
+		title += m.styles.Muted.Render("  team: " + m.activeTeamLabel())
+	}
+	right := m.styles.Muted.Render(m.serverURL)
 	return spread(title, right, m.width)
 }
 
+// renderLogin is the sign-in form. It is the whole body: nothing else is shown
+// until the server has accepted a session.
+func (m Model) renderLogin() string {
+	var b strings.Builder
+	b.WriteString("\n  " + m.styles.Bold.Render("Sign in to "+m.serverURL) + "\n\n")
+	if m.loginNote != "" {
+		b.WriteString(m.styles.Status.Render("  "+m.loginNote) + "\n\n")
+	}
+	b.WriteString("  " + m.styles.Header.Render("Username: ") + m.loginInputs[loginUsername].View() + "\n")
+	b.WriteString("  " + m.styles.Header.Render("Password: ") + m.loginInputs[loginPassword].View() + "\n\n")
+	switch {
+	case m.loggingIn:
+		b.WriteString(m.styles.Muted.Render("  Signing in…") + "\n")
+	case m.loginErr != "":
+		b.WriteString(m.styles.Error.Render("  "+m.loginErr) + "\n")
+	}
+	return b.String()
+}
+
+// activeTeamLabel names what the lists are narrowed to.
+func (m Model) activeTeamLabel() string {
+	if t, ok := m.activeTeam(); ok {
+		return t.Name
+	}
+	return "all"
+}
+
 func (m Model) renderTabs() string {
 	var tabs []string
 	for i, name := range sectionNames {
 		if section(i) == m.activeSection {
-			tabs = append(tabs, styleTabActive.Render(name))
+			tabs = append(tabs, m.styles.TabActive.Render(name))
 		} else {
-			tabs = append(tabs, styleTabInactive.Render(name))
+			tabs = append(tabs, m.styles.TabInactive.Render(name))
 		}
 	}
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return strings.Join(tabs, "") + "\n" + sep
 }
 
 func (m Model) renderBody() string {
+	if m.mode == modeLogin {
+		return m.renderLogin()
+	}
 	if m.err != nil {
-		return "\n" + styleError.Render(fmt.Sprintf("  Error: %v", m.err)) +
+		return "\n" + m.styles.Error.Render(fmt.Sprintf("  Error: %v", m.err)) +
-			"\n" + styleMuted.Render("  Press r to retry.")
+			"\n" + m.styles.Muted.Render("  Press r to retry.")
 	}
 	if !m.connected {
-		return "\n" + styleMuted.Render("  Connecting…")
+		return "\n" + m.styles.Muted.Render("  Connecting…")
 	}
 
 	switch m.mode {
 	case modeIncidentDetail, modeAlertDetail:
 		return m.renderDetail()
 	case modeNote:
-		return m.renderPrompt(styleHeader.Render("Note: ") + m.noteInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Note: ") + m.noteInput.View())
 	case modeSnooze:
-		return m.renderPrompt(styleHeader.Render("Snooze for: ") + m.snoozeInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Snooze for: ") + m.snoozeInput.View())
 	case modeConfirm:
 		switch m.confirmTarget {
 		case confirmDeleteNote, confirmResolveIncident:
@@ -83,6 +116,8 @@ func (m Model) renderBody() string {
 		return m.renderAPIKeyReveal()
 	case modeAPIKeyRevokeByID:
 		return m.renderAPIKeyRevokeByID()
+	case modePasswordSet:
+		return m.renderPasswordSet()
 	default:
 		return m.renderDashboard()
 	}
@@ -90,9 +125,9 @@ func (m Model) renderBody() string {
 
 func (m Model) renderFooter() string {
 	withStatus := func(actions string) string {
-		rendered := styleFooter.Render(actions)
+		rendered := m.styles.Footer.Render(actions)
 		if m.statusMsg != "" {
-			return styleStatus.Render("  "+m.statusMsg) + "\n" + rendered
+			return m.styles.Status.Render("  "+m.statusMsg) + "\n" + rendered
 		}
 		return "\n" + rendered
 	}
@@ -108,13 +143,13 @@ func (m Model) renderFooter() string {
 		return withStatus("  i·open incident  esc·back")
 
 	case modeNote:
-		return "\n" + styleFooter.Render("  enter·submit  esc·cancel")
+		return "\n" + m.styles.Footer.Render("  enter·submit  esc·cancel")
 
 	case modeSnooze:
-		return "\n" + styleFooter.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
+		return "\n" + m.styles.Footer.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
 
 	case modeConfirm:
-		return "\n" + styleError.Render("  "+m.confirmPrompt())
+		return "\n" + m.styles.Error.Render("  "+m.confirmPrompt())
 
 	case modeUserPicker:
 		if m.pickerTarget == pickerIncidentAssignee {
@@ -144,25 +179,39 @@ func (m Model) renderFooter() string {
 	case modeAPIKeyRevokeByID:
 		return withStatus("  enter·revoke  esc·back")
 
+	case modePasswordSet:
+		return withStatus("  tab·next field  enter·set password  esc·cancel")
+
+	case modeLogin:
+		return "\n" + m.styles.Footer.Render("  tab·next field  enter·sign in  esc·quit")
+
 	default:
 		switch m.activeSection {
 		case sectionIncidents:
-			return withStatus("  enter·detail  x·archive  f·filter  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  x·archive  f·filter  " + m.teamHint() + "r·refresh  tab·section  L·sign out  q·quit")
 		case sectionAlerts:
-			return withStatus("  enter·detail  f·filter  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  f·filter  " + m.teamHint() + "r·refresh  tab·section  q·quit")
 		case sectionStats:
 			return withStatus("  ↑/↓·scroll  r·refresh  tab·section  q·quit")
 		case sectionArchived:
-			return withStatus("  enter·detail  x·unarchive  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  x·unarchive  " + m.teamHint() + "r·refresh  tab·section  q·quit")
 		case sectionSchedule:
-			return withStatus("  +·assign day  W·assign week  d·del  ←/→·shift week  tab·section  r·refresh  q·quit")
+			return withStatus("  +·assign day  W·assign week  d·del  ←/→·shift week  " + m.teamHint() + "tab·section  r·refresh  q·quit")
 		case sectionUsers:
-			return withStatus("  n·new user  t·topic  d·delete  k·API keys  r·refresh  tab·section  q·quit")
+			return withStatus("  n·new user  t·topic  d·delete  k·API keys  p·password  r·refresh  L·sign out  q·quit")
 		}
-		return "\n" + styleFooter.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
+		return "\n" + m.styles.Footer.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
 	}
 }
 
+// teamHint is the footer's team-switch key, shown only when there is a choice.
+func (m Model) teamHint() string {
+	if len(m.teams) > 1 {
+		return "T·team  "
+	}
+	return ""
+}
+
 func (m Model) confirmPrompt() string {
 	switch m.confirmTarget {
 	case confirmDeleteNote:
@@ -178,10 +227,44 @@ func (m Model) confirmPrompt() string {
 		return "Delete schedule entry? [y/N]"
 	case confirmDeleteUser:
 		return fmt.Sprintf("Delete user %s (cascades all API keys)? [y/N]", m.selectedUser.Username)
+	case confirmReassignSchedule:
+		if p := m.pendingAssign; p != nil {
+			return fmt.Sprintf("%s assigned to %s. Reassign to %s? [y/N]",
+				dayCount(len(p.taken), len(p.dates)), joinNames(p.holders), p.username)
+		}
+		return "Reassign these days? [y/N]"
 	}
 	return "Are you sure? [y/N]"
 }
 
+// dayCount phrases how much of an assignment is being taken from somebody. A
+// single day says so plainly; a partial week says which part, because "3 of 7"
+// is the difference between taking a shift and taking somebody's whole week.
+func dayCount(taken, total int) string {
+	switch {
+	case total == 1:
+		return "This day is"
+	case taken == total:
+		return fmt.Sprintf("All %d days are", total)
+	default:
+		return fmt.Sprintf("%d of %d days are", taken, total)
+	}
+}
+
+// joinNames renders a list of people as prose.
+func joinNames(names []string) string {
+	switch len(names) {
+	case 0:
+		return "somebody else"
+	case 1:
+		return names[0]
+	case 2:
+		return names[0] + " and " + names[1]
+	default:
+		return strings.Join(names[:len(names)-1], ", ") + " and " + names[len(names)-1]
+	}
+}
+
 // ── Dashboard ──────────────────────────────────────────────────────────────
 
 func (m Model) renderDashboard() string {
@@ -207,9 +290,9 @@ func (m Model) renderIncidents() string {
 	var content string
 	switch {
 	case m.loading && len(m.incidents) == 0:
-		content = styleMuted.Render("  Loading incidents…")
+		content = m.styles.Muted.Render("  Loading incidents…")
 	case len(m.incidents) == 0:
-		content = styleMuted.Render(
+		content = m.styles.Muted.Render(
 			fmt.Sprintf("  No %s incidents.", filterLabel(m.incidentFilter)))
 	default:
 		content = m.incidentTable.View()
@@ -222,9 +305,9 @@ func (m Model) renderAlerts() string {
 	var content string
 	switch {
 	case m.loading && len(m.alerts) == 0:
-		content = styleMuted.Render("  Loading alerts…")
+		content = m.styles.Muted.Render("  Loading alerts…")
 	case len(m.alerts) == 0:
-		content = styleMuted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
+		content = m.styles.Muted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
 	default:
 		content = m.alertTable.View()
 	}
@@ -233,10 +316,10 @@ func (m Model) renderAlerts() string {
 
 func (m Model) renderArchived() string {
 	if m.archivedLoading {
-		return "\n" + styleMuted.Render("  Loading archived incidents…")
+		return "\n" + m.styles.Muted.Render("  Loading archived incidents…")
 	}
 	if len(m.archivedIncidents) == 0 {
-		return "\n" + styleMuted.Render("  No archived incidents.")
+		return "\n" + m.styles.Muted.Render("  No archived incidents.")
 	}
 	return "\n" + m.archivedTable.View()
 }
@@ -252,12 +335,12 @@ func (m Model) renderIncidentStatsBar() string {
 		mttr = humanSeconds(m.incidentStats.MTTRSeconds)
 	}
 	left := fmt.Sprintf("  %s  %s  %s   %s",
-		styleTriggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
+		m.styles.Triggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
-		styleAcknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
+		m.styles.Acknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
-		styleMuted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
+		m.styles.Muted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -270,10 +353,10 @@ func (m Model) renderAlertStatsBar() string {
 	}
 	left := fmt.Sprintf("  Total: %d  %s  %s",
 		total,
-		styleFiring.Render(fmt.Sprintf("Firing: %d", firing)),
+		m.styles.Firing.Render(fmt.Sprintf("Firing: %d", firing)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -290,34 +373,52 @@ func spread(left, right string, width int) string {
 
 func (m Model) renderSchedule() string {
 	if m.scheduleLoading {
-		return "\n" + styleMuted.Render("  Loading schedule…")
+		return "\n" + m.styles.Muted.Render("  Loading schedule…")
+	}
+
+	team, ok := m.scheduleTeam()
+	if !ok {
+		return "\n" + m.styles.Muted.Render("  You are not in any team, so there is no schedule to show.")
 	}
 
 	var onCallLine string
-	if m.currentOnCall != nil {
+	if len(m.currentOnCall) > 0 {
-		onCallLine = fmt.Sprintf("  On-call today: %s",
+		onCallLine = "  On-call today: " + m.styles.AlertName.Render(m.onCallNames())
-			styleAlertName.Render(m.currentOnCall.Username))
 	} else {
-		onCallLine = styleMuted.Render("  On-call today: nobody scheduled")
+		onCallLine = m.styles.Muted.Render("  On-call today: nobody scheduled")
 	}
 
 	from := m.scheduleWindow
 	to := m.scheduleWindow.AddDate(0, 0, 6)
-	windowLabel := styleMuted.Render(fmt.Sprintf("  %s — %s",
+	windowLabel := m.styles.Muted.Render(fmt.Sprintf("  %s: %s — %s",
-		from.Format("Jan 02"), to.Format("Jan 02, 2006")))
+		team.Name, from.Format("Jan 02"), to.Format("Jan 02, 2006")))
 
 	header := "\n" + spread(onCallLine, windowLabel, m.width) + "\n"
 	return header + m.scheduleTable.View()
 }
 
+// onCallNames lists who is on call today. With several teams each name carries
+// its team, since one person per team is on call and "alice, bob" alone would
+// not say whose.
+func (m Model) onCallNames() string {
+	parts := make([]string, len(m.currentOnCall))
+	for i, e := range m.currentOnCall {
+		parts[i] = e.Username
+		if len(m.teams) > 1 && e.TeamName != "" {
+			parts[i] += " (" + e.TeamName + ")"
+		}
+	}
+	return strings.Join(parts, ", ")
+}
+
 func (m Model) renderUserPicker() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 
 	if m.pickerTarget == pickerIncidentAssignee {
 		header := fmt.Sprintf("\n  Assign %s to:\n\n",
-			styleBold.Render(m.selectedIncident.Title))
+			m.styles.Bold.Render(m.selectedIncident.Title))
 		return header + m.userPickerTable.View()
 	}
 
@@ -342,7 +443,7 @@ func (m Model) renderUserPicker() string {
 		}
 	}
 
-	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", styleBold.Render(scope))
+	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", m.styles.Bold.Render(scope))
 	return header + m.userPickerTable.View()
 }
 
@@ -350,14 +451,14 @@ func (m Model) renderUserPicker() string {
 
 func (m Model) renderDetail() string {
 	if m.detailLoading {
-		return "\n" + styleMuted.Render("  Loading…")
+		return "\n" + m.styles.Muted.Render("  Loading…")
 	}
 	return m.detailViewport.View()
 }
 
 // renderPrompt puts an input line under the detail pane.
 func (m Model) renderPrompt(prompt string) string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return m.detailViewport.View() + "\n" + sep + "\n" + prompt
 }
 
@@ -367,7 +468,7 @@ func (m Model) renderStats() string {
 	// Only announce loading before the first result: a background refresh must not
 	// blank the page out from under whoever is reading it.
 	if m.statsLoading && !m.statsLoaded {
-		return "\n" + styleMuted.Render("  Loading statistics…")
+		return "\n" + m.styles.Muted.Render("  Loading statistics…")
 	}
 	return m.statsViewport.View()
 }
@@ -384,16 +485,16 @@ func line(style lipgloss.Style, s string) string {
 
 // ── Content builders ───────────────────────────────────────────────────────
 
-func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
+func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
 	// Title + status header
-	title := styleAlertName.Render(inc.Title)
+	title := s.AlertName.Render(inc.Title)
-	status := incidentStatusStyle(inc.Status).Render(incidentStatusLabel(inc))
+	status := s.IncidentStatus(inc.Status).Render(incidentStatusLabel(inc))
 	if inc.Severity != "" {
-		status += "  " + severityStyle(inc.Severity).Render(strings.ToUpper(inc.Severity))
+		status += "  " + s.Severity(inc.Severity).Render(strings.ToUpper(inc.Severity))
 	}
 	gap := contentW - lipgloss.Width(title) - lipgloss.Width(status)
 	if gap < 1 {
@@ -402,13 +503,16 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 	b.WriteString("\n  " + title + strings.Repeat(" ", gap) + status + "\n\n")
 
 	// Timing and ownership
+	if inc.TeamName != "" {
+		b.WriteString(fmt.Sprintf("  Team:       %s\n", inc.TeamName))
+	}
 	b.WriteString(fmt.Sprintf("  Triggered:  %s  (%s)\n",
 		inc.TriggeredAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, inc.TriggeredAt)))
 
 	if inc.AssignedTo != "" {
-		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", styleBold.Render(inc.AssignedTo)))
+		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", s.Bold.Render(inc.AssignedTo)))
 	} else {
-		b.WriteString(line(styleMuted, "  Assigned:   nobody"))
+		b.WriteString(line(s.Muted, "  Assigned:   nobody"))
 	}
 
 	if inc.AcknowledgedByID != nil {
@@ -416,14 +520,18 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 		if inc.AcknowledgedAt != nil {
 			ackAt = "  at " + inc.AcknowledgedAt.UTC().Format("2006-01-02 15:04 UTC")
 		}
-		b.WriteString(line(styleResolved,
+		b.WriteString(line(s.Resolved,
 			fmt.Sprintf("  Acked:      %s%s", inc.AcknowledgedBy, ackAt)))
 	} else {
-		b.WriteString(line(styleMuted, "  Acked:      not acknowledged"))
+		b.WriteString(line(s.Muted, "  Acked:      not acknowledged"))
+	}
+
+	if inc.EscalationLevel > 0 {
+		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Escalation: level %d", inc.EscalationLevel)))
 	}
 
 	if inc.IsSnoozed() {
-		b.WriteString(line(styleSnoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
+		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
 			inc.SnoozedUntil.UTC().Format("2006-01-02 15:04 UTC"), humanUntil(now, *inc.SnoozedUntil))))
 	}
 
@@ -436,14 +544,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			inc.ResolvedAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, *inc.ResolvedAt), source))
 	}
 	if inc.ArchivedAt != nil {
-		b.WriteString(line(styleMuted, "  Archived:   "+
+		b.WriteString(line(s.Muted, "  Archived:   "+
 			inc.ArchivedAt.UTC().Format("2006-01-02 15:04 UTC")))
 	}
 	b.WriteString("\n")
 
 	// Group labels — the correlation Alertmanager applied.
 	if len(inc.GroupLabels) > 0 {
-		b.WriteString(divider("Grouped By", width))
+		b.WriteString(divider(s, "Grouped By", width))
 		for _, k := range sortedKeys(inc.GroupLabels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(inc.GroupLabels[k], contentW-24)))
 		}
@@ -451,14 +559,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 	}
 
 	// Member alerts
-	b.WriteString(divider(fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
 	if len(inc.Alerts) == 0 {
-		b.WriteString(line(styleMuted, "  No alerts."))
+		b.WriteString(line(s.Muted, "  No alerts."))
 	} else {
 		for _, a := range inc.Alerts {
-			marker := styleFiring.Render("●")
+			marker := s.Firing.Render("●")
 			if a.Status != "firing" {
-				marker = styleResolved.Render("✓")
+				marker = s.Resolved.Render("✓")
 			}
 			instance := a.Labels["instance"]
 			if instance == "" {
@@ -466,29 +574,29 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			}
 			b.WriteString(fmt.Sprintf("  %s %-28s %-26s %s\n",
 				marker, truncate(a.Name, 28), truncate(instance, 26),
-				styleMuted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
+				s.Muted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
 		}
 	}
 	b.WriteString("\n")
 
 	// Timeline — the only history the server keeps.
 	notes := noteEvents(timeline)
-	b.WriteString(divider(fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
 	if len(timeline) == 0 {
-		b.WriteString(line(styleMuted, "  Nothing recorded yet."))
+		b.WriteString(line(s.Muted, "  Nothing recorded yet."))
 	} else {
 		noteIndex := 0
 		for _, e := range timeline {
-			when := styleMuted.Render(humanAgo(now, e.CreatedAt))
+			when := s.Muted.Render(humanAgo(now, e.CreatedAt))
 			if e.Type != api.EventNote {
 				b.WriteString(fmt.Sprintf("  %-52s %s\n", eventLabel(e), when))
 				continue
 			}
 			marker := "  "
-			author := styleBold.Render(e.Username)
+			author := s.Bold.Render(e.Username)
 			if noteIndex == cursor {
-				marker = styleSelected.Render("> ")
+				marker = s.Selected.Render("> ")
-				author = styleSelected.Render(e.Username)
+				author = s.Selected.Render(e.Username)
 			}
 			b.WriteString(fmt.Sprintf("%s%-50s %s\n", marker, author+" wrote", when))
 			b.WriteString("    " + e.Detail + "\n")
@@ -564,6 +672,8 @@ func eventLabel(e api.IncidentEvent) string {
 		// the only thing that says why nobody's phone rang.
 		return truncate(fmt.Sprintf("  Notification to %s failed · %s",
 			notifiedTarget(who), e.Detail), 52)
+	case api.EventDeadmanSilent:
+		return "  Dead man's switch went silent"
 	default:
 		label := "  " + e.Type
 		if e.Detail != "" {
@@ -592,21 +702,21 @@ func notifyKind(detail string) string {
 	return " (" + detail + ")"
 }
 
-func buildAlertDetailContent(alert api.Alert, width int) string {
+func buildAlertDetailContent(s Styles, alert api.Alert, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
-	name := styleAlertName.Render(alert.Name)
+	name := s.AlertName.Render(alert.Name)
 	var statusStr string
 	if alert.Status == "firing" {
-		statusStr = styleFiring.Render("● FIRING")
+		statusStr = s.Firing.Render("● FIRING")
 	} else {
 		label := "✓ RESOLVED"
 		if alert.ResolutionSource != nil {
 			label += " · " + *alert.ResolutionSource
 		}
-		statusStr = styleResolved.Render(label)
+		statusStr = s.Resolved.Render(label)
 	}
 	gap := contentW - lipgloss.Width(name) - lipgloss.Width(statusStr)
 	if gap < 1 {
@@ -626,15 +736,15 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 	if alert.IncidentID != nil {
 		b.WriteString(fmt.Sprintf("  Incident:   %s   %s\n",
-			styleBold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
+			s.Bold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
-			styleMuted.Render("press i to open it")))
+			s.Muted.Render("press i to open it")))
 	} else {
-		b.WriteString(line(styleMuted, "  Incident:   none"))
+		b.WriteString(line(s.Muted, "  Incident:   none"))
 	}
 	b.WriteString("\n")
 
 	if len(alert.Labels) > 0 {
-		b.WriteString(divider("Labels", width))
+		b.WriteString(divider(s, "Labels", width))
 		for _, k := range sortedKeys(alert.Labels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Labels[k], contentW-24)))
 		}
@@ -642,7 +752,7 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	if len(alert.Annotations) > 0 {
-		b.WriteString(divider("Annotations", width))
+		b.WriteString(divider(s, "Annotations", width))
 		for _, k := range sortedKeys(alert.Annotations) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Annotations[k], contentW-24)))
 		}
@@ -650,14 +760,14 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	// Alerts carry no workflow state: it all lives on the incident.
-	b.WriteString(divider("", width))
+	b.WriteString(divider(s, "", width))
-	b.WriteString(line(styleMuted,
+	b.WriteString(line(s.Muted,
 		"  Alerts are read-only — acknowledge, assign, note and resolve on the incident."))
 
 	return b.String()
 }
 
-func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
+func buildStatsContent(s Styles, incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
 	barWidth := width/2 - 10
 	if barWidth < 8 {
 		barWidth = 8
@@ -670,41 +780,41 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 	b.WriteString("\n")
 
 	// Response times first: they are what a rota is actually judged on.
-	b.WriteString(divider("Incident Response", width))
+	b.WriteString(divider(s, "Incident Response", width))
 	if incidents == nil {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Incidents total",
-			styleBold.Render(fmt.Sprintf("%d", incidents.Total))))
+			s.Bold.Render(fmt.Sprintf("%d", incidents.Total))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Triggered",
-			styleTriggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
+			s.Triggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Acknowledged",
-			styleAcknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
+			s.Acknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Resolved",
-			styleResolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
+			s.Resolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to acknowledge",
-			styleBold.Render(humanSeconds(incidents.MTTASeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTASeconds))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to resolve",
-			styleBold.Render(humanSeconds(incidents.MTTRSeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTRSeconds))))
 		if incidents.MTTASeconds == nil || incidents.MTTRSeconds == nil {
-			b.WriteString(line(styleMuted, "  (— means nothing has been acknowledged or resolved yet)"))
+			b.WriteString(line(s.Muted, "  (— means nothing has been acknowledged or resolved yet)"))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Top Alerts", width))
+	b.WriteString(divider(s, "Top Alerts", width))
 	if len(top) == 0 {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		maxCount := top[0].Count
 		for i, a := range top {
-			bar := styleResolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
+			bar := s.Resolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2d. %-30s %s %d\n", i+1, truncate(a.Name, 30), bar, a.Count))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Hour (UTC)", width))
+	b.WriteString(divider(s, "Alerts by Hour (UTC)", width))
 	if len(byHour) > 0 {
 		maxCount := 0
 		for _, h := range byHour {
@@ -713,15 +823,15 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, h := range byHour {
-			bar := styleFiring.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
+			bar := s.Firing.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2dh  %-*s %d\n", h.Hour, barWidth, bar, h.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Day", width))
+	b.WriteString(divider(s, "Alerts by Day", width))
 	if len(byDay) > 0 {
 		maxCount := 0
 		for _, d := range byDay {
@@ -730,11 +840,11 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, d := range byDay {
-			bar := styleAccent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
+			bar := s.Accent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %-4s  %-*s %d\n", d.DayName[:3], barWidth, bar, d.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 
 	return b.String()
@@ -744,22 +854,22 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 
 func (m Model) renderUsers() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 	if len(m.users) == 0 {
-		return "\n" + styleMuted.Render("  No users found. Press n to create one.")
+		return "\n" + m.styles.Muted.Render("  No users found. Press n to create one.")
 	}
 	return "\n" + m.userManageTable.View()
 }
 
 func (m Model) renderUserCreate() string {
-	header := "\n  " + styleBold.Render("Create new user") + "\n\n"
+	header := "\n  " + m.styles.Bold.Render("Create new user") + "\n\n"
 	usernameLabel := "  Username:  "
 	emailLabel := "  Email:     "
 	if m.userFormFocus == 0 {
-		usernameLabel = styleSelected.Render("  Username:  ")
+		usernameLabel = m.styles.Selected.Render("  Username:  ")
 	} else {
-		emailLabel = styleSelected.Render("  Email:     ")
+		emailLabel = m.styles.Selected.Render("  Email:     ")
 	}
 	return header +
 		usernameLabel + m.userFormInputs[0].View() + "\n" +
@@ -767,59 +877,81 @@ func (m Model) renderUserCreate() string {
 }
 
 func (m Model) renderUserNotifyEdit() string {
-	header := fmt.Sprintf("\n  Push notifications for %s\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  Push notifications for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
-	hint := line(styleMuted,
+	hint := line(m.styles.Muted,
 		"  The ntfy topic this user's pages go to. Leave it empty to clear it —\n"+
 			"  their incidents then page the server's shared fallback topic, which\n"+
 			"  carries no Acknowledge button.")
-	label := styleSelected.Render("  Topic:  ")
+	label := m.styles.Selected.Render("  Topic:  ")
 	return header + "\n" + hint + "\n" + label + m.ntfyTopicInput.View() + "\n"
 }
 
+func (m Model) renderPasswordSet() string {
+	header := fmt.Sprintf("\n  Web UI password for %s\n\n", m.styles.Bold.Render(m.selectedUser.Username))
+	if m.pwLoading {
+		return header + line(m.styles.Muted, "  Checking who this key belongs to…")
+	}
+	labels := [pwFieldCount]string{
+		pwCurrent: "  Current password:  ",
+		pwNew:     "  New password:      ",
+		pwRepeat:  "  Repeat:            ",
+	}
+	var form string
+	for _, f := range m.pwFields() {
+		label := labels[f]
+		if f == m.pwFocus {
+			label = m.styles.Selected.Render(label)
+		}
+		form += label + m.pwInputs[f].View() + "\n"
+	}
+	hint := fmt.Sprintf("  At least %d characters. Setting it signs %s out of every other\n  web UI session. API keys are not affected.", minPasswordLen, m.selectedUser.Username)
+	return header + form + "\n" + line(m.styles.Muted, hint)
+}
+
 func (m Model) renderAPIKeyMenu() string {
-	header := fmt.Sprintf("\n  API keys for %s\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  API keys for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
-	warning := line(styleMuted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
+	warning := line(m.styles.Muted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
 	options := "\n" +
-		styleAccent.Render("  n") + "  · create a new API key\n" +
+		m.styles.Accent.Render("  n") + "  · create a new API key\n" +
-		styleAccent.Render("  r") + "  · revoke a key by ID\n"
+		m.styles.Accent.Render("  r") + "  · revoke a key by ID\n"
 	return header + "\n" + warning + options
 }
 
 func (m Model) renderAPIKeyCreate() string {
-	header := fmt.Sprintf("\n  New API key for %s\n\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  New API key for %s\n\n", m.styles.Bold.Render(m.selectedUser.Username))
-	label := styleSelected.Render("  Key name:  ")
+	label := m.styles.Selected.Render("  Key name:  ")
 	return header + label + m.apiKeyNameInput.View() + "\n"
 }
 
 func (m Model) renderAPIKeyReveal() string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
-	warn := styleError.Render("  !! COPY NOW — this key will NEVER be shown again !!")
+	warn := m.styles.Error.Render("  !! COPY NOW — this key will NEVER be shown again !!")
-	nameLine := fmt.Sprintf("  Key name:  %s", styleBold.Render(m.revealedAPIKey.Name))
+	nameLine := fmt.Sprintf("  Key name:  %s", m.styles.Bold.Render(m.revealedAPIKey.Name))
 	idLine := fmt.Sprintf("  Key ID:    %s   %s",
-		styleBold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
+		m.styles.Bold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
-		styleMuted.Render("(save this — needed for future revocation)"))
+		m.styles.Muted.Render("(save this — needed for future revocation)"))
 
-	keyLine := styleResolved.Render("  " + m.revealedAPIKey.Key)
+	keyLine := m.styles.Resolved.Render("  " + m.revealedAPIKey.Key)
 
 	return "\n" + sep + "\n\n" +
 		warn + "\n\n" +
 		nameLine + "\n" +
 		idLine + "\n\n" +
-		styleMuted.Render("  Key value:") + "\n" +
+		m.styles.Muted.Render("  Key value:") + "\n" +
 		keyLine + "\n\n" +
 		sep + "\n"
 }
 
 func (m Model) renderAPIKeyRevokeByID() string {
-	header := fmt.Sprintf("\n  Revoke API key for %s\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  Revoke API key for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
-	hint := line(styleMuted, "  Enter the integer key ID (shown when the key was created).")
+	hint := line(m.styles.Muted, "  Enter the integer key ID (shown when the key was created).")
-	label := styleSelected.Render("  Key ID:  ")
+	label := m.styles.Selected.Render("  Key ID:  ")
 	return header + "\n" + hint + "\n" + label + m.apiKeyRevokeInput.View() + "\n"
 }
 
 // ── Helpers ────────────────────────────────────────────────────────────────
 
-func divider(title string, width int) string {
+func divider(s Styles, title string, width int) string {
 	prefix := "── "
 	if title != "" {
 		prefix += title + " "
@@ -828,7 +960,7 @@ func divider(title string, width int) string {
 	if remaining > 0 {
 		prefix += strings.Repeat("─", remaining)
 	}
-	return styleMuted.Render(prefix) + "\n"
+	return s.Muted.Render(prefix) + "\n"
 }
 
 func sortedKeys(m map[string]string) []string {

internal/tui/view_test.go

@@ -6,8 +6,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // ansi matches the escape sequences lipgloss emits when it decides the output
@@ -16,6 +17,10 @@ var ansi = regexp.MustCompile(`\x1b\[[0-9;]*m`)
 
 func plain(s string) string { return ansi.ReplaceAllString(s, "") }
 
+// testStyles is the default theme, so assertions here run against what a user
+// with no 'theme:' key actually sees.
+func testStyles() Styles { return newStyles(theme.GruvboxDark) }
+
 func mustContain(t *testing.T, got string, wants ...string) {
 	t.Helper()
 	got = plain(got)
@@ -52,7 +57,7 @@ func TestIncidentDetail_RendersTheWholeStory(t *testing.T) {
 		{Type: api.EventNote, Username: "admin", Detail: "draining node-2", CreatedAt: now},
 	}
 
-	out := buildIncidentDetailContent(inc, timeline, -1, 110)
+	out := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 110)
 	mustContain(t, out,
 		"DiskFull (namespace=prod)", "ACKNOWLEDGED", "CRITICAL",
 		"Assigned:", "admin",
@@ -72,7 +77,7 @@ func TestIncidentDetail_ShowsSnooze(t *testing.T) {
 	}
 	// The exact remaining time is humanUntil's business, not this test's — a few
 	// microseconds of elapsed clock turn "in 2h" into "in 1h 59m".
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"TRIGGERED (snoozed)", "Snoozed:", "until", "in 1h")
 }
 
@@ -83,7 +88,7 @@ func TestIncidentDetail_HidesExpiredSnooze(t *testing.T) {
 		Title: "Noisy", Status: api.StatusTriggered,
 		TriggeredAt: time.Now(), SnoozedUntil: &past,
 	}
-	if strings.Contains(plain(buildIncidentDetailContent(inc, nil, -1, 110)), "Snoozed:") {
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, -1, 110)), "Snoozed:") {
 		t.Error("an expired snooze should not be rendered")
 	}
 }
@@ -95,18 +100,18 @@ func TestIncidentDetail_ShowsResolutionSource(t *testing.T) {
 		Title: "Done", Status: api.StatusResolved, TriggeredAt: now.Add(-time.Hour),
 		ResolvedAt: &now, ResolutionSource: &source,
 	}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"RESOLVED", "Resolved:", "manual")
 }
 
 func TestIncidentDetail_UnassignedAndUnacknowledged(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "nobody", "not acknowledged")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "nobody", "not acknowledged")
 }
 
 func TestIncidentDetail_EmptyTimeline(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "Nothing recorded yet")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "Nothing recorded yet")
 }
 
 func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
@@ -117,7 +122,7 @@ func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
 	}
 	inc := api.Incident{Title: "X", Status: api.StatusTriggered, TriggeredAt: now}
 
-	out := plain(buildIncidentDetailContent(inc, timeline, 1, 110))
+	out := plain(buildIncidentDetailContent(testStyles(), inc, timeline, 1, 110))
 	for _, line := range strings.Split(out, "\n") {
 		if strings.Contains(line, "alice") && !strings.HasPrefix(line, "> ") {
 			t.Errorf("expected the selected note marked, got %q", line)
@@ -207,7 +212,7 @@ func TestIncidentDetail_RendersNotifications(t *testing.T) {
 			Detail: "reminder: ntfy returned 502", CreatedAt: now},
 	}
 
-	got := buildIncidentDetailContent(inc, timeline, -1, 120)
+	got := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 120)
 	mustContain(t, got, "Notified niklas (triggered)", "Notification to niklas failed")
 }
 
@@ -230,7 +235,7 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 		Labels:      map[string]string{"instance": "node-1", "severity": "critical"},
 		Annotations: map[string]string{"summary": "disk 90%"},
 	}
-	mustContain(t, buildAlertDetailContent(alert, 110),
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110),
 		"DiskFull", "FIRING", "Incident:", "#7", "press i to open it",
 		"instance", "node-1", "summary", "disk 90%",
 		"Alerts are read-only")
@@ -238,21 +243,21 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 
 func TestAlertDetail_NoIncident(t *testing.T) {
 	alert := api.Alert{ID: 3, Name: "Orphan", Status: "resolved", ReceivedAt: time.Now()}
-	mustContain(t, buildAlertDetailContent(alert, 110), "Incident:", "none")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "Incident:", "none")
 }
 
 func TestAlertDetail_ShowsResolutionSource(t *testing.T) {
 	source := "expiry"
 	alert := api.Alert{Name: "Gone", Status: "resolved", ReceivedAt: time.Now(),
 		ResolutionSource: &source}
-	mustContain(t, buildAlertDetailContent(alert, 110), "RESOLVED", "expiry")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "RESOLVED", "expiry")
 }
 
 // Null MTTA means nothing has been acknowledged, which is a different claim
 // from an instant response.
 func TestStats_RendersDashForMissingAverages(t *testing.T) {
 	stats := &api.IncidentStats{Total: 2, Triggered: 2}
-	out := buildStatsContent(stats, nil, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, nil, nil, nil, 110)
 	mustContain(t, out, "Incident Response", "Mean time to acknowledge", "—",
 		"nothing has been acknowledged or resolved yet")
 }
@@ -260,12 +265,12 @@ func TestStats_RendersDashForMissingAverages(t *testing.T) {
 func TestStats_RendersAverages(t *testing.T) {
 	mtta, mttr := 150.0, 3600.0
 	stats := &api.IncidentStats{Total: 3, Resolved: 1, MTTASeconds: &mtta, MTTRSeconds: &mttr}
-	out := buildStatsContent(stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
 	mustContain(t, out, "2m", "1h", "Top Alerts", "DiskFull")
 }
 
 func TestStats_HandlesNoIncidentData(t *testing.T) {
-	mustContain(t, buildStatsContent(nil, nil, nil, nil, 110), "Incident Response", "No data")
+	mustContain(t, buildStatsContent(testStyles(), nil, nil, nil, nil, 110), "Incident Response", "No data")
 }
 
 func TestView_TabsAndDashboardRender(t *testing.T) {
@@ -296,7 +301,7 @@ func TestView_EmptyStates(t *testing.T) {
 // The stats page renders inside the normal section chrome now, so it has to
 // survive the real path: a window size message sizes the viewport and fills it.
 func TestView_StatsSectionRendersInPlace(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.connected = true
 	m.incidentStats = &api.IncidentStats{Total: 3, Triggered: 1}
 	m.topAlerts = []api.TopAlert{{Name: "DiskFull", Count: 4}}
@@ -335,7 +340,7 @@ func TestFooter_IncidentDetailOffersResolveOnlyWhileOpen(t *testing.T) {
 }
 
 func TestView_ZeroWidthRendersNothing(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	if m.View() != "" {
 		t.Error("expected no output before the first window size message")
 	}

internal/updater/updater.go

@@ -12,7 +12,14 @@ import (
 	"strings"
 )
 
-const releaseAPI = "https://api.github.com/repos/yeniklas/terdut-tui/releases/latest"
+// Gitea's release payload carries the same tag_name, and its attachments the same name
+// and browser_download_url, so the types below are unchanged from the GitHub original.
+//
+// A binary installed before the move still polls api.github.com and will never see a
+// release published here. That GitHub repository is still in place, so such a build
+// reports itself up to date rather than erroring -- its last GitHub release is the
+// bridge, and crossing it is a one-time manual download.
+const releaseAPI = "https://git.ryuvia.com/api/v1/repos/niklas/terdut-tui/releases/latest"
 
 type release struct {
 	TagName string  `json:"tag_name"`
@@ -125,7 +132,7 @@ func fetchLatest() (*release, error) {
 	if err != nil {
 		return nil, err
 	}
-	req.Header.Set("Accept", "application/vnd.github+json")
+	req.Header.Set("Accept", "application/json")
 
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
@@ -134,7 +141,7 @@ func fetchLatest() (*release, error) {
 	defer resp.Body.Close()
 
 	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("GitHub API returned %s", resp.Status)
+		return nil, fmt.Errorf("Gitea API returned %s", resp.Status)
 	}
 
 	var rel release

main.go

@@ -5,11 +5,13 @@ import (
 	"fmt"
 	"os"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/config"
+	"git.ryuvia.com/niklas/terdut-tui/internal/session"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"git.ryuvia.com/niklas/terdut-tui/internal/tui"
+	"git.ryuvia.com/niklas/terdut-tui/internal/updater"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
-	"github.com/yeniklas/terdut-tui/internal/config"
-	"github.com/yeniklas/terdut-tui/internal/tui"
-	"github.com/yeniklas/terdut-tui/internal/updater"
 )
 
 var version = "dev"
@@ -38,8 +40,23 @@ func main() {
 		os.Exit(1)
 	}
 
-	client := api.NewClient(cfg.ServerURL, cfg.APIKey)
+	th, err := theme.Load(cfg.Theme)
-	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+
+	client := api.NewClient(cfg.ServerURL)
+	if token := session.Load(cfg.ServerURL); token != "" {
+		client.SetSession(token)
+	}
+	note := ""
+	if cfg.LegacyAPIKey {
+		note = "api_key in config.yaml is no longer used: sign in with your username and password"
+	}
+	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval, th).
+		WithDefaultTeam(cfg.Team).
+		WithLogin(cfg.Username, note)
 
 	p := tea.NewProgram(model, tea.WithAltScreen())
 	if _, err := p.Run(); err != nil {