Show a colour-coded team picker instead of cycling with T

T used to silently cycle Model.activeTeamID through the caller's teams with
no visible list of choices. It now opens a full picker (modelled on the
existing user picker) listing every team plus "All teams", each with a
stable identity colour from a new six-colour theme palette. The same colour
now also shows as a bullet next to "team: <name>" in the header, so the
active team stays visible without opening the picker.

Adds an Identity palette to the theme package (six hues, skipping the ones
that already mean firing/critical), Styles.TeamColor to pick one by team id,
and identity_1..6 as theme-file tokens alongside the existing twelve so a
fully custom theme can still set every token.

.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/release.yml

@@ -1,57 +0,0 @@
-name: Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  build:
-    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 +1,46 @@
 # terdut-tui
 
-TUI client for [terdut-server](https://github.com/terdut-server), a Prometheus Alertmanager receiver and on-call scheduler.
+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
+
+The server splits alerts from incidents, and this client mirrors it:
+
+- **Alert** — Alertmanager's record. Firing or resolved, read-only, no workflow state.
+- **Incident** — the work item: triggered → acknowledged → resolved, with an
+  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
 
@@ -12,16 +52,17 @@ TUI client for [terdut-server](https://github.com/terdut-server), a Prometheus A
 ## 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
-internal/updater/updater.go  Self-update via GitHub Releases
+  styles.go                  Styles struct — every lipgloss style, built from a theme
+internal/updater/updater.go  Self-update via Gitea releases
 ```
 
 ## Architecture rules
@@ -30,6 +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
 
@@ -37,11 +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
 
@@ -57,6 +114,12 @@ go run . --self-update
 go build -ldflags="-X main.version=v0.1.0" -o terdut-tui .
 ```
 
+## Sections
+
+`Incidents` (the queue, and the default) · `Alerts` (raw read-only feed) ·
+`Stats` (MTTA/MTTR and alert frequency charts) ·
+`Archived` (archived incidents) · `Schedule` · `Users`
+
 ## Development stages
 
 | Stage | Feature |
@@ -66,6 +129,9 @@ go build -ldflags="-X main.version=v0.1.0" -o terdut-tui .
 | 3 | Alert detail: acknowledge, comment, statistics charts |
 | 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

@@ -1,22 +1,82 @@
 # 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).
 
 ## Features
 
-- **Alert dashboard** — live view of firing and resolved alerts with auto-refresh
-- **Alert actions** — acknowledge, comment, and view per-alert statistics
-- **On-call schedule** — visual calendar of who is on duty, assign and remove entries
-- **User management** — add and remove users, manage API keys
+- **Incident queue** — open incidents with severity, status, assignee and age, auto-refreshing
+- **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
+- **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 **v0.20.0 or later**. The server became team-scoped in
+> 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
+
+The server keeps two objects and this client follows that split:
+
+- An **alert** is Alertmanager's record — firing or resolved, and read-only here.
+- An **incident** is the work item. It is what you acknowledge, assign, snooze,
+  discuss and resolve, and it is where all the actions live.
+
+Incidents are correlated by the `groupKey` Alertmanager already computed from your
+`group_by` configuration, so several alerts commonly share one incident.
+
+Two behaviours worth knowing before you press a key:
+
+- **Resolving is final.** The server treats a manual resolve as terminal: a later
+  occurrence opens a *new* incident rather than reopening this one, and if the alert
+  underneath never stops firing the incident stays closed. The TUI asks for
+  confirmation before doing it.
+- **Snooze is the "not now" button.** It hides an incident from the default queue
+  without closing it, and expires on its own.
+
+## Push notifications
+
+When the server is configured for ntfy, an incident that opens pages whoever is
+on call. Each user has their own topic, shown as a column in the Users section
+and edited with `t`. A user with no topic falls back to the server's shared
+fallback topic, which carries **no Acknowledge button** — the topic is shared, so
+a button on it would let any subscriber acknowledge as somebody else.
+
+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.
+
 
 ## 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
@@ -25,11 +85,70 @@ 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 eighteen 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 |
+| `identity_1` .. `identity_6` | a team's colour in the header and the `T` picker — carries no meaning of its own, so pick six colours that just read as distinct from one another (and from `firing`/`sev_critical`, which already mean something) |
+
+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
 
@@ -41,13 +160,81 @@ terdut-tui --self-update   update to the latest release
 
 ### Keybindings
 
+Global:
+
 | Key | Action |
 |-----|--------|
 | `j` / `↓` | Move down |
 | `k` / `↑` | Move up |
-| `tab` | Switch section (Alerts / Schedule / Users) |
-| `enter` | Select / open detail |
+| `tab` / `shift+tab` | Next / previous section |
+| `enter` | Open detail |
 | `esc` | Go back |
 | `r` | Refresh |
-| `f` | Filter / cycle filter |
+| `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.
+
+Incidents section:
+
+| Key | Action |
+|-----|--------|
+| `f` | Cycle: open → triggered → acknowledged → resolved → snoozed |
+| `x` | Archive (resolved incidents only) |
+
+Incident detail:
+
+| Key | Action |
+|-----|--------|
+| `a` / `A` | Acknowledge / clear acknowledgement |
+| `R` | Resolve — asks to confirm, and is final |
+| `s` | Assign to a user |
+| `z` / `Z` | Snooze for a duration / un-snooze |
+| `c` | Add a note |
+| `[` / `]` | Select a note |
+| `d` | Delete the selected note (your own only) |
+| `x` | Archive / un-archive |
+
+Alerts section (read-only):
+
+| Key | Action |
+|-----|--------|
+| `f` | Cycle: firing → resolved → all → archived |
+| `i` | In detail: jump to the alert's incident |
+
+Stats section:
+
+| Key | Action |
+|-----|--------|
+| `j` / `k`, `pgup` / `pgdn` | Scroll |
+
+Schedule section:
+
+| Key | Action |
+|-----|--------|
+| `+` / `W` | Assign a day / a whole week |
+| `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 |
+|-----|--------|
+| `n` | Create a user |
+| `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 +12,222 @@ 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)
+}
+
+// AuthConfig asks how the server can be signed in to. It is unauthenticated, so
+// it works before anybody has signed in.
+func (c *Client) AuthConfig() (AuthConfig, error) {
+	var cfg AuthConfig
+	req, err := http.NewRequest(http.MethodGet, c.baseURL+"/api/auth/config", nil)
+	if err != nil {
+		return cfg, err
+	}
+	req.Header.Set("Accept", "application/json")
+	err = c.do(req, &cfg)
+	return cfg, err
+}
+
+// The ways a device login poll can end other than with a session.
+var (
+	// ErrDevicePending means nobody has approved yet: poll again after the
+	// interval.
+	ErrDevicePending = errors.New("waiting for approval")
+
+	// ErrDeviceSlowDown means the server was polled faster than it asked. It is
+	// not a failure; poll again, a little slower.
+	ErrDeviceSlowDown = errors.New("polling too fast")
+
+	// ErrDeviceExpired means the person took too long, or the server forgot the
+	// login. ErrDeviceDenied means they refused it.
+	ErrDeviceExpired = errors.New("the sign-in expired")
+	ErrDeviceDenied  = errors.New("the sign-in was refused")
+)
+
+// StartDeviceLogin asks the server to begin a device login.
+func (c *Client) StartDeviceLogin() (*DeviceLogin, error) {
+	req, err := c.newRequestWithBody(http.MethodPost, "/api/oidc/device", struct{}{})
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Del("Cookie")
+	var d DeviceLogin
+	if err := c.do(req, &d); err != nil {
+		return nil, err
+	}
+	if d.DeviceCode == "" || d.UserCode == "" || d.VerificationURL == "" {
+		return nil, errors.New("server started a sign-in but sent no code")
+	}
+	return &d, nil
+}
+
+// PollDeviceLogin asks whether the person has approved. On approval it returns
+// the session token, which the client also keeps; until then it returns one of
+// the ErrDevice* errors.
+func (c *Client) PollDeviceLogin(deviceCode string) (string, error) {
+	req, err := c.newRequestWithBody(http.MethodPost, "/api/oidc/device/token",
+		struct {
+			DeviceCode string `json:"device_code"`
+		}{deviceCode})
+	if err != nil {
+		return "", err
+	}
+	req.Header.Del("Cookie")
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	switch resp.StatusCode {
+	case http.StatusAccepted:
+		return "", ErrDevicePending
+	case http.StatusTooManyRequests:
+		return "", ErrDeviceSlowDown
+	case http.StatusGone:
+		var e struct {
+			Error string `json:"error"`
+		}
+		_ = json.NewDecoder(resp.Body).Decode(&e)
+		if e.Error == "denied" {
+			return "", ErrDeviceDenied
+		}
+		return "", ErrDeviceExpired
+	}
+	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)
-	req.Header.Set("Accept", "application/json")
+	c.authorize(req)
 	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 +236,7 @@ func (c *Client) do(req *http.Request, out any) error {
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
-		var e struct {
-			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)
+		return statusError(resp)
 	}
 
 	if out != nil {
@@ -61,10 +245,18 @@ 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.
-func (c *Client) ListAlerts(status string, archived bool, limit int) ([]Alert, error) {
+//
+// 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(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)
 	}
@@ -87,23 +279,6 @@ func (c *Client) ListAlerts(status string, archived bool, limit int) ([]Alert, e
 	return alerts, c.do(req, &alerts)
 }
 
-func (c *Client) ArchiveAlert(id int64) (*Alert, error) {
-	req, err := c.newRequest(http.MethodPost, fmt.Sprintf("/api/alerts/%d/archive", id))
-	if err != nil {
-		return nil, err
-	}
-	var alert Alert
-	return &alert, c.do(req, &alert)
-}
-
-func (c *Client) UnarchiveAlert(id int64) error {
-	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/alerts/%d/archive", id))
-	if err != nil {
-		return err
-	}
-	return c.do(req, nil)
-}
-
 // GetAlertStats fetches aggregate alert counts.
 func (c *Client) GetAlertStats() (*AlertStats, error) {
 	req, err := c.newRequest(http.MethodGet, "/api/stats/alerts")
@@ -123,8 +298,7 @@ func (c *Client) newRequestWithBody(method, path string, body any) (*http.Reques
 	if err != nil {
 		return nil, err
 	}
-	req.Header.Set("Authorization", "Bearer "+c.apiKey)
-	req.Header.Set("Accept", "application/json")
+	c.authorize(req)
 	req.Header.Set("Content-Type", "application/json")
 	return req, nil
 }
@@ -138,49 +312,189 @@ func (c *Client) GetAlert(id int64) (*Alert, error) {
 	return &alert, c.do(req, &alert)
 }
 
-func (c *Client) AcknowledgeAlert(id int64) (*Alert, error) {
-	req, err := c.newRequest(http.MethodPost, fmt.Sprintf("/api/alerts/%d/acknowledge", id))
+// ── Incidents ──────────────────────────────────────────────────────────────
+
+// 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(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)
+	}
+	if archived {
+		q.Set("archived", "true")
+	}
+	if snoozed {
+		q.Set("snoozed", "true")
+	}
+	if limit > 0 {
+		q.Set("limit", strconv.Itoa(limit))
+	}
+	path := "/api/incidents"
+	if len(q) > 0 {
+		path += "?" + q.Encode()
+	}
+
+	req, err := c.newRequest(http.MethodGet, path)
 	if err != nil {
 		return nil, err
 	}
-	var alert Alert
-	return &alert, c.do(req, &alert)
+	var incidents []Incident
+	return incidents, c.do(req, &incidents)
 }
 
-func (c *Client) UnacknowledgeAlert(id int64) error {
-	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/alerts/%d/acknowledge", id))
+// GetIncident returns one incident with its member alerts inline.
+func (c *Client) GetIncident(id int64) (*Incident, error) {
+	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/incidents/%d", id))
+	if err != nil {
+		return nil, err
+	}
+	var incident Incident
+	return &incident, c.do(req, &incident)
+}
+
+func (c *Client) GetIncidentTimeline(id int64) ([]IncidentEvent, error) {
+	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/incidents/%d/timeline", id))
+	if err != nil {
+		return nil, err
+	}
+	var events []IncidentEvent
+	return events, c.do(req, &events)
+}
+
+// GetSimilarIncidents lists earlier resolved incidents that look like this one
+// and have notes. Servers before the similar-incidents endpoint answer 404; the
+// caller treats any error as "nothing to show".
+func (c *Client) GetSimilarIncidents(id int64) ([]SimilarIncident, error) {
+	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/incidents/%d/similar", id))
+	if err != nil {
+		return nil, err
+	}
+	var similar []SimilarIncident
+	return similar, c.do(req, &similar)
+}
+
+func (c *Client) AcknowledgeIncident(id int64) (*Incident, error) {
+	req, err := c.newRequest(http.MethodPost, fmt.Sprintf("/api/incidents/%d/acknowledge", id))
+	if err != nil {
+		return nil, err
+	}
+	var incident Incident
+	return &incident, c.do(req, &incident)
+}
+
+func (c *Client) UnacknowledgeIncident(id int64) error {
+	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/incidents/%d/acknowledge", id))
 	if err != nil {
 		return err
 	}
 	return c.do(req, nil)
 }
 
-func (c *Client) GetComments(alertID int64) ([]Comment, error) {
-	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/alerts/%d/comments", alertID))
+// ResolveIncident closes an incident by hand. This is terminal on the server: a
+// later occurrence in the same group opens a new incident rather than reopening
+// this one, and if the alert underneath never stops firing the incident stays
+// closed. Use SnoozeIncident for "not now".
+func (c *Client) ResolveIncident(id int64) (*Incident, error) {
+	req, err := c.newRequest(http.MethodPost, fmt.Sprintf("/api/incidents/%d/resolve", id))
 	if err != nil {
 		return nil, err
 	}
-	var comments []Comment
-	return comments, c.do(req, &comments)
+	var incident Incident
+	return &incident, c.do(req, &incident)
 }
 
-func (c *Client) AddComment(alertID int64, content string) (*Comment, error) {
-	req, err := c.newRequestWithBody(http.MethodPost, fmt.Sprintf("/api/alerts/%d/comments", alertID), map[string]string{"content": content})
+func (c *Client) AssignIncident(id, userID int64) (*Incident, error) {
+	body := struct {
+		UserID int64 `json:"user_id"`
+	}{UserID: userID}
+	req, err := c.newRequestWithBody(http.MethodPost, fmt.Sprintf("/api/incidents/%d/assign", id), body)
 	if err != nil {
 		return nil, err
 	}
-	var comment Comment
-	return &comment, c.do(req, &comment)
+	var incident Incident
+	return &incident, c.do(req, &incident)
 }
 
-func (c *Client) DeleteComment(alertID, commentID int64) error {
-	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/alerts/%d/comments/%d", alertID, commentID))
+// SnoozeIncident hides an incident from the default queue for a duration,
+// without closing it.
+func (c *Client) SnoozeIncident(id int64, duration string) (*Incident, error) {
+	body := struct {
+		Duration string `json:"duration"`
+	}{Duration: duration}
+	req, err := c.newRequestWithBody(http.MethodPost, fmt.Sprintf("/api/incidents/%d/snooze", id), body)
+	if err != nil {
+		return nil, err
+	}
+	var incident Incident
+	return &incident, c.do(req, &incident)
+}
+
+func (c *Client) UnsnoozeIncident(id int64) error {
+	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/incidents/%d/snooze", id))
 	if err != nil {
 		return err
 	}
 	return c.do(req, nil)
 }
 
+func (c *Client) ArchiveIncident(id int64) (*Incident, error) {
+	req, err := c.newRequest(http.MethodPost, fmt.Sprintf("/api/incidents/%d/archive", id))
+	if err != nil {
+		return nil, err
+	}
+	var incident Incident
+	return &incident, c.do(req, &incident)
+}
+
+func (c *Client) UnarchiveIncident(id int64) error {
+	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/incidents/%d/archive", id))
+	if err != nil {
+		return err
+	}
+	return c.do(req, nil)
+}
+
+// AddNote appends a note to the incident's timeline. pinned files it as the
+// resolution note: what fixed the incident, shown on similar ones later.
+func (c *Client) AddNote(incidentID int64, content string, pinned bool) (*IncidentEvent, error) {
+	req, err := c.newRequestWithBody(http.MethodPost,
+		fmt.Sprintf("/api/incidents/%d/notes", incidentID), map[string]any{"content": content, "pinned": pinned})
+	if err != nil {
+		return nil, err
+	}
+	var event IncidentEvent
+	return &event, c.do(req, &event)
+}
+
+// DeleteNote removes one of your own notes. Only notes are deletable — the rest
+// of the timeline is a record of what happened.
+func (c *Client) DeleteNote(incidentID, eventID int64) error {
+	req, err := c.newRequest(http.MethodDelete,
+		fmt.Sprintf("/api/incidents/%d/notes/%d", incidentID, eventID))
+	if err != nil {
+		return err
+	}
+	return c.do(req, nil)
+}
+
+func (c *Client) GetIncidentStats() (*IncidentStats, error) {
+	req, err := c.newRequest(http.MethodGet, "/api/stats/incidents")
+	if err != nil {
+		return nil, err
+	}
+	var stats IncidentStats
+	return &stats, c.do(req, &stats)
+}
+
+// ── Statistics ─────────────────────────────────────────────────────────────
+
 func (c *Client) GetTopAlerts(limit int) ([]TopAlert, error) {
 	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/stats/alerts/top?limit=%d", limit))
 	if err != nil {
@@ -208,8 +522,37 @@ func (c *Client) GetStatsByDay() ([]DayStat, error) {
 	return result, c.do(req, &result)
 }
 
-func (c *Client) GetSchedule(from, to string) ([]ScheduleEntry, error) {
-	req, err := c.newRequest(http.MethodGet, fmt.Sprintf("/api/schedule?from=%s&to=%s", from, to))
+// ── Teams ──────────────────────────────────────────────────────────────────
+
+// 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
 	}
@@ -217,41 +560,30 @@ 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.
-func (c *Client) GetCurrentOnCall() (*ScheduleEntry, error) {
+// GetCurrentOnCall returns today's on-call entries, one per team that has
+// 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)
-	if err != nil {
-		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
+	var entries []ScheduleEntry
+	return entries, c.do(req, &entries)
 }
 
-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"`
-		Dates  []string `json:"dates"`
-	}{UserID: userID, Dates: dates}
-	req, err := c.newRequestWithBody(http.MethodPost, "/api/schedule", body)
+		UserID  int64    `json:"user_id"`
+		Dates   []string `json:"dates"`
+		Replace bool     `json:"replace,omitempty"`
+	}{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
 	}
@@ -259,14 +591,16 @@ func (c *Client) AssignSchedule(userID int64, dates []string) ([]ScheduleEntry,
 	return entries, c.do(req, &entries)
 }
 
-func (c *Client) DeleteScheduleEntry(id int64) error {
-	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/schedule/%d", id))
+func (c *Client) DeleteScheduleEntry(teamID, id int64) error {
+	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 {
@@ -289,6 +623,23 @@ func (c *Client) CreateUser(username, email string) (*User, error) {
 	return &user, c.do(req, &user)
 }
 
+// SetUserNotifyTarget points a user's push notifications at an ntfy topic.
+//
+// An empty topic clears it: the server stores NULL, and that user's incidents
+// page the shared fallback topic instead — which carries no Acknowledge button,
+// because anyone subscribed to it could otherwise acknowledge as somebody else.
+func (c *Client) SetUserNotifyTarget(userID int64, topic string) (*User, error) {
+	body := struct {
+		NtfyTopic string `json:"ntfy_topic"`
+	}{NtfyTopic: topic}
+	req, err := c.newRequestWithBody(http.MethodPut, fmt.Sprintf("/api/users/%d/notify", userID), body)
+	if err != nil {
+		return nil, err
+	}
+	var user User
+	return &user, c.do(req, &user)
+}
+
 func (c *Client) DeleteUser(id int64) error {
 	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/users/%d", id))
 	if err != nil {
@@ -317,7 +668,33 @@ 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

@@ -0,0 +1,689 @@
+package api
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+)
+
+// call records what the client actually put on the wire. The paths and methods
+// are the contract with terdut-server, and getting one wrong is exactly how this
+// client broke when the server split alerts from incidents.
+type call struct {
+	method string
+	path   string
+	query  string
+	body   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.
+func stub(t *testing.T, status int, response string) (*Client, *call) {
+	t.Helper()
+	got := &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.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)
+	c := NewClient(srv.URL)
+	c.SetSession("test-session")
+	return c, got
+}
+
+func TestClient_SendsTheSessionCookie(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `[]`)
+	if _, err := c.ListIncidents(0, "", false, false, 0); err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	if got.cookie != "test-session" {
+		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")
+	}
+}
+
+// Every incident action, with the method and path terdut-server exposes.
+func TestClient_IncidentEndpoints(t *testing.T) {
+	tests := []struct {
+		name   string
+		invoke func(*Client) error
+		method string
+		path   string
+		// resp defaults to a JSON object; endpoints returning a list need an array.
+		resp string
+	}{
+		{"get", func(c *Client) error { _, err := c.GetIncident(7); return err },
+			http.MethodGet, "/api/incidents/7", ""},
+		{"timeline", func(c *Client) error { _, err := c.GetIncidentTimeline(7); return err },
+			http.MethodGet, "/api/incidents/7/timeline", `[]`},
+		{"acknowledge", func(c *Client) error { _, err := c.AcknowledgeIncident(7); return err },
+			http.MethodPost, "/api/incidents/7/acknowledge", ""},
+		{"unacknowledge", func(c *Client) error { return c.UnacknowledgeIncident(7) },
+			http.MethodDelete, "/api/incidents/7/acknowledge", ""},
+		{"resolve", func(c *Client) error { _, err := c.ResolveIncident(7); return err },
+			http.MethodPost, "/api/incidents/7/resolve", ""},
+		{"assign", func(c *Client) error { _, err := c.AssignIncident(7, 3); return err },
+			http.MethodPost, "/api/incidents/7/assign", ""},
+		{"snooze", func(c *Client) error { _, err := c.SnoozeIncident(7, "2h"); return err },
+			http.MethodPost, "/api/incidents/7/snooze", ""},
+		{"unsnooze", func(c *Client) error { return c.UnsnoozeIncident(7) },
+			http.MethodDelete, "/api/incidents/7/snooze", ""},
+		{"archive", func(c *Client) error { _, err := c.ArchiveIncident(7); return err },
+			http.MethodPost, "/api/incidents/7/archive", ""},
+		{"unarchive", func(c *Client) error { return c.UnarchiveIncident(7) },
+			http.MethodDelete, "/api/incidents/7/archive", ""},
+		{"add note", func(c *Client) error { _, err := c.AddNote(7, "hi", false); return err },
+			http.MethodPost, "/api/incidents/7/notes", ""},
+		{"similar", func(c *Client) error { _, err := c.GetSimilarIncidents(7); return err },
+			http.MethodGet, "/api/incidents/7/similar", `[]`},
+		{"delete note", func(c *Client) error { return c.DeleteNote(7, 12) },
+			http.MethodDelete, "/api/incidents/7/notes/12", ""},
+		{"stats", func(c *Client) error { _, err := c.GetIncidentStats(); return err },
+			http.MethodGet, "/api/stats/incidents", ""},
+		{"set notify target", func(c *Client) error { _, err := c.SetUserNotifyTarget(7, "t"); return err },
+			http.MethodPut, "/api/users/7/notify", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			resp := tt.resp
+			if resp == "" {
+				resp = `{}`
+			}
+			c, got := stub(t, http.StatusOK, resp)
+			if err := tt.invoke(c); err != nil {
+				t.Fatalf("%s: %v", tt.name, err)
+			}
+			if got.method != tt.method || got.path != tt.path {
+				t.Errorf("expected %s %s, got %s %s", tt.method, tt.path, got.method, got.path)
+			}
+		})
+	}
+}
+
+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", 0, "", false, false, 0, ""},
+		{"status", 0, "triggered", false, false, 0, "status=triggered"},
+		{"archived", 0, "resolved", true, false, 0, "archived=true&status=resolved"},
+		{"snoozed", 0, "", false, true, 0, "snoozed=true"},
+		{"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.teamID, tt.status, tt.archived, tt.snoozed, tt.limit); err != nil {
+				t.Fatalf("list: %v", err)
+			}
+			if got.query != tt.want {
+				t.Errorf("expected query %q, got %q", tt.want, got.query)
+			}
+		})
+	}
+}
+
+func TestClient_RequestBodies(t *testing.T) {
+	t.Run("assign", func(t *testing.T) {
+		c, got := stub(t, http.StatusOK, `{}`)
+		if _, err := c.AssignIncident(1, 42); err != nil {
+			t.Fatalf("assign: %v", err)
+		}
+		var body struct {
+			UserID int64 `json:"user_id"`
+		}
+		if err := json.Unmarshal([]byte(got.body), &body); err != nil {
+			t.Fatalf("decode body %q: %v", got.body, err)
+		}
+		if body.UserID != 42 {
+			t.Errorf("expected user_id 42, got %d", body.UserID)
+		}
+	})
+
+	t.Run("snooze", func(t *testing.T) {
+		c, got := stub(t, http.StatusOK, `{}`)
+		if _, err := c.SnoozeIncident(1, "90m"); err != nil {
+			t.Fatalf("snooze: %v", err)
+		}
+		var body struct {
+			Duration string `json:"duration"`
+		}
+		if err := json.Unmarshal([]byte(got.body), &body); err != nil {
+			t.Fatalf("decode body %q: %v", got.body, err)
+		}
+		if body.Duration != "90m" {
+			t.Errorf("expected duration 90m, got %q", body.Duration)
+		}
+	})
+
+	// 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 {
+			t.Fatalf("set notify target: %v", err)
+		}
+		if got.body != `{"ntfy_topic":"terdut-niklas"}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
+	// Clearing has to put an explicit empty string on the wire: omitting the
+	// field would leave the topic untouched instead of removing it.
+	t.Run("clear notify target", func(t *testing.T) {
+		c, got := stub(t, http.StatusOK, `{}`)
+		if _, err := c.SetUserNotifyTarget(3, ""); err != nil {
+			t.Fatalf("clear notify target: %v", err)
+		}
+		if got.body != `{"ntfy_topic":""}` {
+			t.Errorf("expected an explicit empty topic, got %q", got.body)
+		}
+	})
+}
+
+func TestUser_TopicFlattensNilAndEmpty(t *testing.T) {
+	var users []User
+	if err := json.Unmarshal([]byte(
+		`[{"id":1,"username":"a"},{"id":2,"username":"b","ntfy_topic":""},
+		  {"id":3,"username":"c","ntfy_topic":"terdut-c"}]`), &users); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	want := []string{"", "", "terdut-c"}
+	for i, u := range users {
+		if got := u.Topic(); got != want[i] {
+			t.Errorf("user %d: expected topic %q, got %q", u.ID, want[i], got)
+		}
+	}
+}
+
+// The 409 on re-resolving is the server telling the user why nothing happened,
+// so the message has to survive into the error the TUI displays.
+func TestClient_SurfacesServerErrorMessage(t *testing.T) {
+	c, _ := stub(t, http.StatusConflict, `{"error":"incident is resolved"}`)
+	_, err := c.ResolveIncident(1)
+	if err == nil {
+		t.Fatal("expected an error on 409")
+	}
+	if !strings.Contains(err.Error(), "incident is resolved") || !strings.Contains(err.Error(), "409") {
+		t.Errorf("expected status and server message in %q", err.Error())
+	}
+}
+
+func TestClient_ErrorWithoutBody(t *testing.T) {
+	c, _ := stub(t, http.StatusInternalServerError, ``)
+	if _, err := c.GetIncident(1); err == nil || !strings.Contains(err.Error(), "500") {
+		t.Errorf("expected a 500 error, got %v", err)
+	}
+}
+
+// Nobody on call is a normal state, not a failure: the server answers with an
+// empty list, one entry per team that has somebody scheduled.
+func TestGetCurrentOnCall_ListsOnePerTeam(t *testing.T) {
+	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("on call: %v", err)
+	}
+	if got.path != "/api/schedule/current" {
+		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")
+	}
+}
+
+// Optional fields are omitted by the server rather than sent null, so decoding
+// has to leave them zero instead of failing.
+func TestIncident_DecodesSparseServerShape(t *testing.T) {
+	c, _ := stub(t, http.StatusOK, `{
+		"id": 1,
+		"group_key": "{}:{alertname=\"DiskFull\"}",
+		"title": "DiskFull (namespace=prod)",
+		"group_labels": {"alertname": "DiskFull", "namespace": "prod"},
+		"status": "triggered",
+		"severity": "critical",
+		"triggered_at": "2026-07-30T10:00:00Z"
+	}`)
+
+	inc, err := c.GetIncident(1)
+	if err != nil {
+		t.Fatalf("get: %v", err)
+	}
+	if inc.Title != "DiskFull (namespace=prod)" || inc.Severity != "critical" {
+		t.Errorf("unexpected incident %+v", inc)
+	}
+	if inc.GroupLabels["namespace"] != "prod" {
+		t.Errorf("expected group labels decoded, got %v", inc.GroupLabels)
+	}
+	if !inc.IsOpen() {
+		t.Error("an incident with no resolved_at is open")
+	}
+	if inc.IsSnoozed() {
+		t.Error("an incident with no snoozed_until is not snoozed")
+	}
+	if inc.AcknowledgedByID != nil || inc.AssignedToID != nil {
+		t.Error("expected acknowledgement and assignment to be absent")
+	}
+}
+
+// A snooze expires by falling into the past; the server sweeps nothing, so the
+// client is what decides a stale snooze no longer counts.
+func TestIncident_IsSnoozed(t *testing.T) {
+	past := time.Now().Add(-time.Hour)
+	future := time.Now().Add(time.Hour)
+
+	tests := []struct {
+		name  string
+		until *time.Time
+		want  bool
+	}{
+		{"never snoozed", nil, false},
+		{"snooze in the past has expired", &past, false},
+		{"snooze in the future holds", &future, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := (Incident{SnoozedUntil: tt.until}).IsSnoozed(); got != tt.want {
+				t.Errorf("expected %v, got %v", tt.want, got)
+			}
+		})
+	}
+}
+
+func TestIncident_IsOpen(t *testing.T) {
+	now := time.Now()
+	if !(Incident{}).IsOpen() {
+		t.Error("no resolved_at means open")
+	}
+	if (Incident{ResolvedAt: &now}).IsOpen() {
+		t.Error("resolved_at means closed")
+	}
+}
+
+func TestAlert_DecodesIncidentLink(t *testing.T) {
+	c, _ := stub(t, http.StatusOK, `{"id":3,"name":"DiskFull","status":"firing","incident_id":7}`)
+	a, err := c.GetAlert(3)
+	if err != nil {
+		t.Fatalf("get alert: %v", err)
+	}
+	if a.IncidentID == nil || *a.IncidentID != 7 {
+		t.Errorf("expected incident_id 7, got %v", a.IncidentID)
+	}
+}
+
+func TestListAlerts_ArchivedFilter(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `[]`)
+	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" {
+		t.Errorf("unexpected request %s?%s", got.path, got.query)
+	}
+}
+
+// MTTA and MTTR are null until something has been acknowledged or resolved. That
+// is "no data", and it must not decode to a confident zero.
+func TestIncidentStats_NullAveragesStayNil(t *testing.T) {
+	c, _ := stub(t, http.StatusOK,
+		`{"total":2,"triggered":2,"acknowledged":0,"resolved":0,"mtta_seconds":null,"mttr_seconds":null}`)
+	stats, err := c.GetIncidentStats()
+	if err != nil {
+		t.Fatalf("stats: %v", err)
+	}
+	if stats.Total != 2 || stats.Triggered != 2 {
+		t.Errorf("unexpected counts %+v", stats)
+	}
+	if stats.MTTASeconds != nil || stats.MTTRSeconds != nil {
+		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())
+	}
+}
+
+func TestAuthConfig_ReadsWhatTheServerOffers(t *testing.T) {
+	c, got := stub(t, http.StatusOK,
+		`{"password_login":false,"oidc":{"enabled":true,"name":"Authentik"},"device_login":true}`)
+	cfg, err := c.AuthConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.method != http.MethodGet || got.path != "/api/auth/config" {
+		t.Errorf("wrong request: %s %s", got.method, got.path)
+	}
+	if cfg.PasswordLogin || !cfg.OIDC.Enabled || cfg.OIDC.Name != "Authentik" || !cfg.DeviceLogin {
+		t.Errorf("config: %+v", cfg)
+	}
+}
+
+func TestAuthConfig_OldServerAnswers404(t *testing.T) {
+	c, _ := stub(t, http.StatusNotFound, `{"error":"not found"}`)
+	_, err := c.AuthConfig()
+	var se *StatusError
+	if !errors.As(err, &se) || se.Code != http.StatusNotFound {
+		t.Errorf("want a 404 StatusError, got %v", err)
+	}
+}
+
+func TestStartDeviceLogin_SendsNoSessionAndReturnsTheCodes(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `{"device_code":"dev","user_code":"BCDF-GHJK",
+		"verification_url":"https://terdut.example.com/device?code=BCDF-GHJK","interval":5,"expires_in":600}`)
+	d, err := c.StartDeviceLogin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.method != http.MethodPost || got.path != "/api/oidc/device" {
+		t.Errorf("wrong request: %s %s", got.method, got.path)
+	}
+	// A stale session must not ride along on a request that replaces it.
+	if got.cookie != "" {
+		t.Errorf("sent the old session %q", got.cookie)
+	}
+	if d.DeviceCode != "dev" || d.UserCode != "BCDF-GHJK" || d.Interval != 5 || d.ExpiresIn != 600 ||
+		d.VerificationURL != "https://terdut.example.com/device?code=BCDF-GHJK" {
+		t.Errorf("login: %+v", d)
+	}
+}
+
+func TestStartDeviceLogin_AReplyWithoutCodesIsAnError(t *testing.T) {
+	c, _ := stub(t, http.StatusOK, `{}`)
+	if _, err := c.StartDeviceLogin(); err == nil {
+		t.Error("an empty reply must not be taken for a started login")
+	}
+}
+
+func TestPollDeviceLogin_Outcomes(t *testing.T) {
+	for _, tc := range []struct {
+		name   string
+		status int
+		body   string
+		want   error
+	}{
+		{"pending", http.StatusAccepted, `{"status":"pending"}`, ErrDevicePending},
+		{"slow down", http.StatusTooManyRequests, `{"error":"slow_down"}`, ErrDeviceSlowDown},
+		{"expired", http.StatusGone, `{"error":"expired"}`, ErrDeviceExpired},
+		{"denied", http.StatusGone, `{"error":"denied"}`, ErrDeviceDenied},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			c, got := stub(t, tc.status, tc.body)
+			tok, err := c.PollDeviceLogin("dev")
+			if !errors.Is(err, tc.want) || tok != "" {
+				t.Errorf("got %q, %v; want %v", tok, err, tc.want)
+			}
+			if got.path != "/api/oidc/device/token" || !strings.Contains(got.body, `"device_code":"dev"`) {
+				t.Errorf("wrong request: %s %s", got.path, got.body)
+			}
+			if c.HasSession() && c.session == "" {
+				t.Error("session state corrupted")
+			}
+		})
+	}
+}
+
+func TestPollDeviceLogin_ApprovalKeepsTheSessionFromTheCookie(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.SetCookie(w, &http.Cookie{Name: SessionCookie, Value: "granted"})
+		io.WriteString(w, `{"user":{}}`)
+	}))
+	t.Cleanup(srv.Close)
+	c := NewClient(srv.URL)
+	tok, err := c.PollDeviceLogin("dev")
+	if err != nil || tok != "granted" {
+		t.Fatalf("got %q, %v", tok, err)
+	}
+	if !c.HasSession() {
+		t.Error("the client must keep the session it was given")
+	}
+}
+
+func TestPollDeviceLogin_ApprovalWithoutACookieIsAnError(t *testing.T) {
+	c, _ := stub(t, http.StatusOK, `{"user":{}}`)
+	c.SetSession("")
+	if _, err := c.PollDeviceLogin("dev"); err == nil {
+		t.Error("a 200 with no session cookie is not a sign-in")
+	}
+}

internal/api/types.go

@@ -2,41 +2,186 @@ package api
 
 import "time"
 
+// Alert is the server's record of what Alertmanager said. It is read-only:
+// acknowledging, assigning, noting and resolving all happen on the Incident an
+// alert belongs to.
 type Alert struct {
-	ID               int64             `json:"id"`
-	Fingerprint      string            `json:"fingerprint"`
-	Name             string            `json:"name"`
-	Status           string            `json:"status"`
-	Labels           map[string]string `json:"labels"`
-	Annotations      map[string]string `json:"annotations"`
-	StartsAt         time.Time         `json:"starts_at"`
-	EndsAt           *time.Time        `json:"ends_at"`
-	GeneratorURL     string            `json:"generator_url"`
-	ReceivedAt       time.Time         `json:"received_at"`
-	AcknowledgedByID *int64            `json:"acknowledged_by_id"`
-	AcknowledgedBy   string            `json:"acknowledged_by"`
-	AcknowledgedAt   *time.Time        `json:"acknowledged_at"`
-	ArchivedAt       *time.Time        `json:"archived_at,omitempty"`
+	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"`
+	Labels       map[string]string `json:"labels"`
+	Annotations  map[string]string `json:"annotations"`
+	StartsAt     time.Time         `json:"starts_at"`
+	EndsAt       *time.Time        `json:"ends_at"`
+	GeneratorURL string            `json:"generator_url"`
+	ReceivedAt   time.Time         `json:"received_at"`
+	ArchivedAt   *time.Time        `json:"archived_at,omitempty"`
+
+	// IncidentID is the most recent incident this alert belongs to. An alert row
+	// is reused across occurrences of the same fingerprint, so it belongs to a
+	// series of incidents over its life and this is only the newest.
+	IncidentID *int64 `json:"incident_id,omitempty"`
 
 	// 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"`
 }
 
+// AuthConfig is how the server can be signed in to, from the unauthenticated
+// GET /api/auth/config. A server too old to have the endpoint answers 404, which
+// callers treat as "passwords only".
+type AuthConfig struct {
+	PasswordLogin bool `json:"password_login"`
+	OIDC          struct {
+		Enabled bool   `json:"enabled"`
+		Name    string `json:"name"`
+	} `json:"oidc"`
+
+	// DeviceLogin is whether the server can sign in a client that has no browser,
+	// by showing a code (see StartDeviceLogin).
+	DeviceLogin bool `json:"device_login"`
+}
+
+// DeviceLogin is a sign-in the server has started for this client: the person
+// opens VerificationURL, checks UserCode, and approves; the client polls with
+// DeviceCode until the server hands over a session.
+type DeviceLogin struct {
+	DeviceCode      string `json:"device_code"`
+	UserCode        string `json:"user_code"`
+	VerificationURL string `json:"verification_url"`
+
+	// Interval is how many seconds to wait between polls, and ExpiresIn how many
+	// the person has to approve.
+	Interval  int `json:"interval"`
+	ExpiresIn int `json:"expires_in"`
+}
+
+// Incident statuses.
+const (
+	StatusTriggered    = "triggered"
+	StatusAcknowledged = "acknowledged"
+	StatusResolved     = "resolved"
+)
+
+// Incident is the work item: what a person acknowledges, assigns, snoozes,
+// discusses and resolves. Many alerts map to one incident, correlated by the
+// 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"`
+	Status      string            `json:"status"`
+
+	// Severity is a high-water mark across the incident's alerts, never lowered,
+	// so a resolved incident still says how bad it got.
+	Severity string `json:"severity,omitempty"`
+
+	TriggeredAt time.Time `json:"triggered_at"`
+
+	AcknowledgedByID *int64     `json:"acknowledged_by_id,omitempty"`
+	AcknowledgedBy   string     `json:"acknowledged_by,omitempty"`
+	AcknowledgedAt   *time.Time `json:"acknowledged_at,omitempty"`
+
+	AssignedToID *int64 `json:"assigned_to_id,omitempty"`
+	AssignedTo   string `json:"assigned_to,omitempty"`
+
+	SnoozedUntil *time.Time `json:"snoozed_until,omitempty"`
+
+	ResolvedAt *time.Time `json:"resolved_at,omitempty"`
+
+	// ResolutionSource is "alerts" when every alert stopped firing, "manual"
+	// 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.
+	Alerts []Alert `json:"alerts,omitempty"`
+}
+
+// IsSnoozed reports whether the incident is currently quietened. A snooze
+// expires by falling into the past; nothing on the server sweeps it.
+func (i Incident) IsSnoozed() bool {
+	return i.SnoozedUntil != nil && i.SnoozedUntil.After(time.Now())
+}
+
+// IsOpen reports whether the incident is still work in progress.
+func (i Incident) IsOpen() bool { return i.ResolvedAt == nil }
+
+// Incident timeline event types written by the server. New ones may be added,
+// so render unrecognised types generically rather than dropping them.
+const (
+	EventTriggered      = "triggered"
+	EventAlertAdded     = "alert_added"
+	EventAlertResolved  = "alert_resolved"
+	EventAcknowledged   = "acknowledged"
+	EventUnacknowledged = "unacknowledged"
+	EventAssigned       = "assigned"
+	EventSnoozed        = "snoozed"
+	EventUnsnoozed      = "unsnoozed"
+	EventResolved       = "resolved"
+	EventNote           = "note"
+
+	// A note marked as what fixed the incident. The server leads similar
+	// incidents with these.
+	EventResolutionNote = "resolution_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
+	// the shared fallback topic rather than to a person.
+	EventNotified     = "notified"
+	EventNotifyFailed = "notify_failed"
+)
+
+// IncidentEvent is one entry in an incident's timeline. An empty Username means
+// the server acted rather than a person. On an "assigned" event the user is the
+// assignee, not the actor.
+type IncidentEvent struct {
+	ID         int64     `json:"id"`
+	IncidentID int64     `json:"incident_id"`
+	Type       string    `json:"type"`
+	UserID     *int64    `json:"user_id,omitempty"`
+	Username   string    `json:"username,omitempty"`
+	AlertID    *int64    `json:"alert_id,omitempty"`
+	Detail     string    `json:"detail,omitempty"`
+	CreatedAt  time.Time `json:"created_at"`
+}
+
 type AlertStats struct {
 	Total    int `json:"total"`
 	Firing   int `json:"firing"`
 	Resolved int `json:"resolved"`
 }
 
-type Comment struct {
-	ID        int64     `json:"id"`
-	AlertID   int64     `json:"alert_id"`
-	UserID    int64     `json:"user_id"`
-	Username  string    `json:"username"`
-	Content   string    `json:"content"`
-	CreatedAt time.Time `json:"created_at"`
+// IncidentStats carries the queue counts plus mean time to acknowledge and to
+// resolve. Both averages are nil until something has actually been acknowledged
+// or resolved — that is "no data", not zero.
+type IncidentStats struct {
+	Total        int      `json:"total"`
+	Triggered    int      `json:"triggered"`
+	Acknowledged int      `json:"acknowledged"`
+	Resolved     int      `json:"resolved"`
+	MTTASeconds  *float64 `json:"mtta_seconds"`
+	MTTRSeconds  *float64 `json:"mttr_seconds"`
 }
 
 type TopAlert struct {
@@ -57,6 +202,8 @@ 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
@@ -68,6 +215,63 @@ type User struct {
 	Username  string    `json:"username"`
 	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
+	// topic, which carries no Acknowledge button.
+	NtfyTopic *string `json:"ntfy_topic,omitempty"`
+}
+
+// Topic reads the user's ntfy topic, flattening the nil and empty cases the
+// server treats alike.
+func (u User) Topic() string {
+	if u.NtfyTopic == nil {
+		return ""
+	}
+	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 {
@@ -78,3 +282,15 @@ type APIKey struct {
 	CreatedAt  time.Time  `json:"created_at"`
 	LastUsedAt *time.Time `json:"last_used_at"`
 }
+
+// SimilarIncident is an earlier, resolved incident with the same signature
+// (alert name plus stable group labels) as the one being viewed. ResolutionNotes
+// are its "what fixed it" notes; NoteCount counts its plain notes.
+type SimilarIncident struct {
+	ID              int64           `json:"id"`
+	Title           string          `json:"title"`
+	TriggeredAt     time.Time       `json:"triggered_at"`
+	ResolvedAt      time.Time       `json:"resolved_at"`
+	NoteCount       int             `json:"note_count"`
+	ResolutionNotes []IncidentEvent `json:"resolution_notes"`
+}

internal/config/config.go

@@ -13,14 +13,33 @@ 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
+
+	// Auth is how to sign in when the server offers a choice: "sso" starts a
+	// single sign-on login straight away, "password" (or empty) shows the
+	// password form. The server decides what is on offer; this only picks the
+	// default among it.
+	Auth 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"`
+	Auth            string `yaml:"auth,omitempty"`
 }
 
 func Load() (*Config, error) {
@@ -33,7 +52,7 @@ 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\n  auth: sso            # optional, sso or password: how to sign in by default", path)
 		}
 		return nil, fmt.Errorf("cannot read config file: %w", err)
 	}
@@ -46,8 +65,11 @@ 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")
+
+	switch raw.Auth {
+	case "", "password", "sso":
+	default:
+		return nil, fmt.Errorf("config: 'auth' must be sso or password, not %q", raw.Auth)
 	}
 
 	interval := defaultRefreshInterval
@@ -57,7 +79,11 @@ 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,
+		Auth:            raw.Auth,
 	}, nil
 }

internal/config/config_test.go

@@ -0,0 +1,84 @@
+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")
+	}
+}
+
+func TestLoad_AuthIsOptionalAndChecked(t *testing.T) {
+	for _, tc := range []struct {
+		yaml, want string
+		bad        bool
+	}{
+		{"", "", false},
+		{"auth: password\n", "password", false},
+		{"auth: sso\n", "sso", false},
+		{"auth: oidc\n", "", true},
+	} {
+		writeConfig(t, "server_url: https://terdut.example.com\n"+tc.yaml)
+		cfg, err := Load()
+		switch {
+		case tc.bad && err == nil:
+			t.Errorf("%q: expected an error", tc.yaml)
+		case !tc.bad && err != nil:
+			t.Errorf("%q: %v", tc.yaml, err)
+		case !tc.bad && cfg.Auth != tc.want:
+			t.Errorf("%q: auth %q, want %q", tc.yaml, cfg.Auth, tc.want)
+		}
+	}
+}

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 +1,99 @@
+package theme
+
+import (
+	"sort"
+
+	"github.com/charmbracelet/lipgloss"
+)
+
+// 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"
+	darkPurple = "#d3869b"
+
+	lightBg0    = "#fbf1c7"
+	lightFg1    = "#3c3836"
+	lightFg4    = "#7c6f64"
+	lightRed    = "#9d0006"
+	lightGrn    = "#79740e"
+	lightYel    = "#b57614"
+	lightBlu    = "#076678"
+	lightAqua   = "#427b58"
+	lightOrng   = "#af3a03"
+	lightPurple = "#8f3f71"
+)
+
+// 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,
+
+	// Red already means an alarm, so it is the one gruvbox hue left out here.
+	Identity: [6]lipgloss.Color{darkBlu, darkAqua, darkYel, darkGrn, darkOrng, darkPurple},
+}
+
+// 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,
+
+	Identity: [6]lipgloss.Color{lightBlu, lightAqua, lightYel, lightGrn, lightOrng, lightPurple},
+}
+
+// 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 +1,209 @@
+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"`
+
+	Identity1 *string `yaml:"identity_1"`
+	Identity2 *string `yaml:"identity_2"`
+	Identity3 *string `yaml:"identity_3"`
+	Identity4 *string `yaml:"identity_4"`
+	Identity5 *string `yaml:"identity_5"`
+	Identity6 *string `yaml:"identity_6"`
+}
+
+// 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},
+		{"identity_1", r.Identity1, &t.Identity[0]},
+		{"identity_2", r.Identity2, &t.Identity[1]},
+		{"identity_3", r.Identity3, &t.Identity[2]},
+		{"identity_4", r.Identity4, &t.Identity[3]},
+		{"identity_5", r.Identity5, &t.Identity[4]},
+		{"identity_6", r.Identity6, &t.Identity[5]},
+	}
+}
+
+// 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 +1,189 @@
+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"
+identity_1: "#00000d"
+identity_2: "#00000e"
+identity_3: "#00000f"
+identity_4: "#000010"
+identity_5: "#000011"
+identity_6: "#000012"
+`)
+
+	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)
+	}
+	if got.Identity[0] != "#00000d" || got.Identity[5] != "#000012" {
+		t.Errorf("identity tokens not applied: %+v", got.Identity)
+	}
+}
+
+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 +1,36 @@
+// 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
+
+	// Identity tells things like teams apart from one another — not a status
+	// or a severity, so none of the six carries a meaning of its own.
+	Identity [6]lipgloss.Color
+}

internal/tui/login_test.go

@@ -0,0 +1,255 @@
+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)
+	}
+	// Nothing is connected without a session. The one thing started is asking
+	// how the server can be signed in to, and a server too old to be asked (404)
+	// must leave the password form as it was.
+	srv := httptest.NewServer(http.NotFoundHandler())
+	t.Cleanup(srv.Close)
+	cmd := signedOut(srv.URL).Init()
+	if cmd == nil {
+		t.Fatal("expected the form to ask the server how it can be signed in to")
+	}
+	msg, ok := cmd().(authConfigMsg)
+	if !ok {
+		t.Fatalf("expected authConfigMsg, got %#v", cmd())
+	}
+	if !msg.cfg.PasswordLogin || msg.cfg.DeviceLogin {
+		t.Errorf("an old server offers passwords only, got %+v", msg.cfg)
+	}
+}
+
+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_test.go

@@ -0,0 +1,396 @@
+package tui
+
+import (
+	"testing"
+	"time"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"github.com/charmbracelet/bubbles/table"
+)
+
+func TestNextFilter(t *testing.T) {
+	tests := []struct {
+		name    string
+		cycle   []string
+		current string
+		want    string
+	}{
+		{"advances", incidentFilters, "", api.StatusTriggered},
+		{"advances again", incidentFilters, api.StatusTriggered, api.StatusAcknowledged},
+		{"wraps back to the open queue", incidentFilters, "snoozed", ""},
+		{"alerts advance", alertFilters, "firing", "resolved"},
+		{"alerts wrap", alertFilters, "archived", "firing"},
+		{"unknown current restarts the cycle", incidentFilters, "bogus", ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := nextFilter(tt.cycle, tt.current); got != tt.want {
+				t.Errorf("expected %q, got %q", tt.want, got)
+			}
+		})
+	}
+}
+
+// "snoozed" is a pseudo-status in the filter cycle: the server has no such
+// status, it is a separate query axis.
+func TestIncidentQuery(t *testing.T) {
+	tests := []struct {
+		filter      string
+		wantStatus  string
+		wantSnoozed bool
+	}{
+		{"", "", false},
+		{api.StatusTriggered, api.StatusTriggered, false},
+		{api.StatusResolved, api.StatusResolved, false},
+		{"snoozed", "", true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.filter, func(t *testing.T) {
+			status, snoozed := incidentQuery(tt.filter)
+			if status != tt.wantStatus || snoozed != tt.wantSnoozed {
+				t.Errorf("expected (%q, %v), got (%q, %v)",
+					tt.wantStatus, tt.wantSnoozed, status, snoozed)
+			}
+		})
+	}
+}
+
+func TestFilterLabel(t *testing.T) {
+	if got := filterLabel(""); got != "open" {
+		t.Errorf("the empty filter is the open queue, got %q", got)
+	}
+	if got := filterLabel("resolved"); got != "resolved" {
+		t.Errorf("expected resolved, got %q", got)
+	}
+}
+
+func TestNoteEvents(t *testing.T) {
+	timeline := []api.IncidentEvent{
+		{Type: api.EventTriggered},
+		{Type: api.EventNote, Detail: "first"},
+		{Type: api.EventAcknowledged},
+		{Type: api.EventNote, Detail: "second"},
+	}
+	notes := noteEvents(timeline)
+	if len(notes) != 2 {
+		t.Fatalf("expected 2 notes, got %d", len(notes))
+	}
+	if notes[0].Detail != "first" || notes[1].Detail != "second" {
+		t.Errorf("notes out of order: %v", notes)
+	}
+	if len(noteEvents(nil)) != 0 {
+		t.Error("an empty timeline has no notes")
+	}
+}
+
+func TestHumanDuration(t *testing.T) {
+	tests := []struct {
+		d    time.Duration
+		want string
+	}{
+		{5 * time.Second, "moments"},
+		{90 * time.Second, "1m"},
+		{45 * time.Minute, "45m"},
+		{2 * time.Hour, "2h"},
+		{150 * time.Minute, "2h 30m"},
+		{48 * time.Hour, "2d"},
+		{50 * time.Hour, "2d 2h"},
+	}
+	for _, tt := range tests {
+		if got := humanDuration(tt.d); got != tt.want {
+			t.Errorf("humanDuration(%v) = %q, want %q", tt.d, got, tt.want)
+		}
+	}
+}
+
+func TestHumanAgo_ClampsFutureToNow(t *testing.T) {
+	now := time.Now()
+	// Server and client clocks disagree often enough that this must not render
+	// as a negative age.
+	if got := humanAgo(now, now.Add(time.Hour)); got != "moments ago" {
+		t.Errorf("expected a future timestamp to clamp, got %q", got)
+	}
+}
+
+func TestHumanUntil(t *testing.T) {
+	now := time.Now()
+	if got := humanUntil(now, now.Add(2*time.Hour)); got != "in 2h" {
+		t.Errorf("expected 'in 2h', got %q", got)
+	}
+	if got := humanUntil(now, now.Add(-time.Minute)); got != "expired" {
+		t.Errorf("a deadline in the past has expired, got %q", got)
+	}
+}
+
+// MTTA and MTTR are nil until something has been acknowledged or resolved, and
+// that has to read as "no data" rather than an instant response.
+func TestHumanSeconds(t *testing.T) {
+	if got := humanSeconds(nil); got != "—" {
+		t.Errorf("expected an em dash for no data, got %q", got)
+	}
+	secs := 150.0
+	if got := humanSeconds(&secs); got != "2m" {
+		t.Errorf("expected 2m, got %q", got)
+	}
+}
+
+func TestIncidentRows(t *testing.T) {
+	future := time.Now().Add(time.Hour)
+	rows := incidentRows([]api.Incident{
+		{Title: "DiskFull", Status: api.StatusTriggered, Severity: "critical",
+			AssignedTo: "admin", TriggeredAt: time.Now()},
+		{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))
+	}
+	if rows[0][0] != "critical" || rows[0][3] != "admin" {
+		t.Errorf("unexpected first row %v", rows[0])
+	}
+	if rows[1][0] != "—" || rows[1][3] != "—" {
+		t.Errorf("missing severity and assignee should show an em dash, got %v", rows[1])
+	}
+	// bubbles' table renders plain strings, so snooze has to be marked in text.
+	if rows[2][2] != "triggered (zzz)" {
+		t.Errorf("expected a snooze marker in the status cell, got %q", rows[2][2])
+	}
+}
+
+// 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])
+	}
+	if rows[1][4] != "—" {
+		t.Errorf("an alert with no incident shows an em dash, got %q", rows[1][4])
+	}
+}
+
+// A user with no ntfy topic gets no pages of their own — the row has to say so
+// rather than leaving a blank that reads as "not loaded yet".
+func TestUserManageRows_ShowMissingTopic(t *testing.T) {
+	topic := "terdut-niklas"
+	empty := ""
+	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},
+		{ID: 2, Username: "alex"},
+		// The server stores a blank topic as NULL, but a stale client or an older
+		// server can still hand one back; it means the same thing.
+		{ID: 3, Username: "sam", NtfyTopic: &empty},
+	}
+	m.rebuildUserManageTable()
+
+	rows := m.userManageTable.Rows()
+	if rows[0][2] != "terdut-niklas" {
+		t.Errorf("expected the topic in the row, got %q", rows[0][2])
+	}
+	if rows[1][2] != "—" || rows[2][2] != "—" {
+		t.Errorf("expected an em dash for nil and empty topics, got %q and %q",
+			rows[1][2], rows[2][2])
+	}
+}
+
+// A previous release overflowed the terminal by two columns because the padding
+// budget was wrong. Columns plus bubbles' per-cell padding must land exactly on
+// the window width.
+func TestColumnWidthsFitTheTerminal(t *testing.T) {
+	for _, width := range []int{100, 110, 140, 200} {
+		// Five cells each, or six once a Team column is added. userManageColumns
+		// is five cells as well: username, email, topic, flags, created.
+		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 widths(tc.cols) {
+				sum += w
+			}
+			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)
+			}
+		}
+	}
+}
+
+// Narrow terminals fall back to minimum widths, which legitimately overflow;
+// 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, true)), widths(alertColumns(width, true))...)
+		cols = append(cols, widths(userManageColumns(width))...)
+		for _, w := range cols {
+			if w < 1 {
+				t.Errorf("width %d produced a non-positive column %d", width, w)
+			}
+		}
+	}
+}
+
+func widths(cols []table.Column) []int {
+	out := make([]int, len(cols))
+	for i, c := range cols {
+		out[i] = c.Width
+	}
+	return out
+}
+
+func TestTableHeight_NeverGoesBelowOne(t *testing.T) {
+	if got := tableHeight(3, 10); got != 1 {
+		t.Errorf("expected a floor of 1, got %d", got)
+	}
+	if got := tableHeight(40, 8); got != 32 {
+		t.Errorf("expected 32, got %d", got)
+	}
+}
+
+func TestBuildScheduleDays(t *testing.T) {
+	monday := time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
+	days := buildScheduleDays(monday, []api.ScheduleEntry{
+		{Date: "2026-07-29", Username: "alice"},
+	})
+	if len(days) != 7 {
+		t.Fatalf("expected a 7-day window, got %d", len(days))
+	}
+	if days[2].entry == nil || days[2].entry.Username != "alice" {
+		t.Errorf("expected alice on the third day, got %+v", days[2].entry)
+	}
+	if days[0].entry != nil {
+		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/sso_test.go

@@ -0,0 +1,378 @@
+package tui
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/session"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// fakeServer is the device-login half of terdut-server: it starts a login,
+// answers polls with whatever poll says, and records what it was asked.
+type fakeServer struct {
+	*httptest.Server
+	mu    sync.Mutex
+	polls int
+	// poll is called for each poll and writes the response.
+	poll func(w http.ResponseWriter, n int)
+}
+
+func newFakeServer(t *testing.T) *fakeServer {
+	t.Helper()
+	f := &fakeServer{}
+	f.Server = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/api/oidc/device":
+			io.WriteString(w, `{"device_code":"dev-1","user_code":"BCDF-GHJK",
+				"verification_url":"https://terdut.example.com/device?code=BCDF-GHJK","interval":5,"expires_in":600}`)
+		case "/api/oidc/device/token":
+			f.mu.Lock()
+			f.polls++
+			n := f.polls
+			f.mu.Unlock()
+			var body struct {
+				DeviceCode string `json:"device_code"`
+			}
+			json.NewDecoder(r.Body).Decode(&body)
+			if body.DeviceCode != "dev-1" {
+				t.Errorf("polled with %q", body.DeviceCode)
+			}
+			f.poll(w, n)
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	t.Cleanup(f.Close)
+	return f
+}
+
+func pending(w http.ResponseWriter, _ int) {
+	w.WriteHeader(http.StatusAccepted)
+	io.WriteString(w, `{"status":"pending"}`)
+}
+
+// offering is a signed-out model that has been told what the server offers.
+func offering(t *testing.T, url string, cfg api.AuthConfig, pref string) (Model, tea.Cmd) {
+	t.Helper()
+	m := signedOut(url).WithAuth(pref)
+	next, cmd := m.Update(authConfigMsg{cfg})
+	return next.(Model), cmd
+}
+
+func both() api.AuthConfig {
+	c := api.AuthConfig{PasswordLogin: true, DeviceLogin: true}
+	c.OIDC.Enabled, c.OIDC.Name = true, "Authentik"
+	return c
+}
+
+func ssoOnly() api.AuthConfig {
+	c := both()
+	c.PasswordLogin = false
+	return c
+}
+
+func update(t *testing.T, m Model, msg tea.Msg) (Model, tea.Cmd) {
+	t.Helper()
+	next, cmd := m.Update(msg)
+	return next.(Model), cmd
+}
+
+func ctrlO() tea.KeyMsg { return tea.KeyMsg{Type: tea.KeyCtrlO} }
+
+func TestSSO_OfferedAlongsidePasswordsIsNotStartedByItself(t *testing.T) {
+	m, cmd := offering(t, "http://test", both(), "")
+	if cmd != nil || m.sso.active {
+		t.Fatal("with passwords on offer nothing should start until asked")
+	}
+	view := m.View()
+	for _, want := range []string{"Username:", "Password:", "ctrl+o to sign in with Authentik"} {
+		if !strings.Contains(view, want) {
+			t.Errorf("expected %q on the form:\n%s", want, view)
+		}
+	}
+}
+
+func TestSSO_NotOfferedShowsNoSuchHint(t *testing.T) {
+	m, _ := offering(t, "http://test", api.AuthConfig{PasswordLogin: true}, "")
+	if strings.Contains(m.View(), "ctrl+o") {
+		t.Error("a server with no SSO must not advertise it")
+	}
+	if m, cmd := update(t, m, ctrlO()); cmd != nil || m.sso.active {
+		t.Error("ctrl+o must do nothing when the server has no SSO")
+	}
+}
+
+func TestSSO_FullFlow(t *testing.T) {
+	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
+	f := newFakeServer(t)
+	f.poll = func(w http.ResponseWriter, n int) {
+		if n < 3 {
+			pending(w, n)
+			return
+		}
+		http.SetCookie(w, &http.Cookie{Name: api.SessionCookie, Value: "tok-sso", Path: "/"})
+		io.WriteString(w, `{"user":{}}`)
+	}
+	m, _ := offering(t, f.URL, both(), "")
+
+	// ctrl+o asks the server for a login.
+	m, cmd := update(t, m, ctrlO())
+	if !m.sso.active || cmd == nil {
+		t.Fatal("ctrl+o should start a single sign-on login")
+	}
+	if !strings.Contains(m.View(), "Contacting the server") {
+		t.Errorf("before the server answers:\n%s", m.View())
+	}
+	started, ok := cmd().(deviceStartedMsg)
+	if !ok {
+		t.Fatalf("expected deviceStartedMsg, got %#v", cmd())
+	}
+
+	// The link and the code are shown, and a poll is scheduled.
+	m, cmd = update(t, m, started)
+	if cmd == nil || m.sso.interval != 5*time.Second {
+		t.Fatalf("expected a poll to be scheduled every 5s, got cmd %v interval %v", cmd != nil, m.sso.interval)
+	}
+	view := m.View()
+	for _, want := range []string{"Sign in with Authentik", "https://terdut.example.com/device?code=BCDF-GHJK",
+		"BCDF-GHJK", "Waiting for approval", "10 minutes", "esc·cancel"} {
+		if !strings.Contains(view, want) {
+			t.Errorf("expected %q while waiting:\n%s", want, view)
+		}
+	}
+	if strings.Contains(view, "Username:") {
+		t.Error("the password form must be out of the way while waiting")
+	}
+
+	// Two polls that find nothing, each scheduling the next.
+	for i := 1; i <= 2; i++ {
+		m, cmd = update(t, m, devicePollMsg{m.sso.attempt})
+		if cmd == nil {
+			t.Fatalf("poll %d: expected a request", i)
+		}
+		pend, ok := cmd().(devicePendingMsg)
+		if !ok {
+			t.Fatalf("poll %d: expected devicePendingMsg", i)
+		}
+		if m, cmd = update(t, m, pend); cmd == nil || !m.sso.active {
+			t.Fatalf("poll %d: expected to keep waiting", i)
+		}
+	}
+
+	// The third is approved: the session is saved and it moves on and connects.
+	m, cmd = update(t, m, devicePollMsg{m.sso.attempt})
+	done := cmd()
+	if _, ok := done.(loginDoneMsg); !ok {
+		t.Fatalf("expected loginDoneMsg, got %#v", done)
+	}
+	if got := session.Load(f.URL); got != "tok-sso" {
+		t.Errorf("session saved for next time: %q", got)
+	}
+	m, connect := update(t, m, done)
+	if m.mode != modeDashboard || m.sso.active || connect == nil {
+		t.Errorf("expected to move on and connect: mode %v active %v", m.mode, m.sso.active)
+	}
+	if f.polls != 3 {
+		t.Errorf("%d polls, want 3", f.polls)
+	}
+}
+
+func TestSSO_EscCancelsBeforeItQuits(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "")
+	m, _ = update(t, m, ctrlO())
+	m, _ = update(t, m, deviceStartedMsg{m.sso.attempt, api.DeviceLogin{DeviceCode: "d", UserCode: "AAAA-BBBB", VerificationURL: "u", Interval: 5, ExpiresIn: 600}})
+
+	m, cmd := update(t, m, tea.KeyMsg{Type: tea.KeyEsc})
+	if cmd != nil {
+		t.Fatal("the first esc backs out of the wait; it must not quit")
+	}
+	if m.sso.active || m.mode != modeLogin || !strings.Contains(m.View(), "Username:") {
+		t.Errorf("expected the password form back, active %v", m.sso.active)
+	}
+	if _, cmd := update(t, m, tea.KeyMsg{Type: tea.KeyEsc}); cmd == nil {
+		t.Error("esc on the form quits, as it always did")
+	} else if _, ok := cmd().(tea.QuitMsg); !ok {
+		t.Errorf("expected a quit, got %#v", cmd())
+	}
+}
+
+// The answers of an attempt that was cancelled arrive late and must change nothing.
+func TestSSO_StaleMessagesAreIgnored(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "")
+	m, _ = update(t, m, ctrlO())
+	old := m.sso.attempt
+	m = m.cancelSSO()
+
+	for name, msg := range map[string]tea.Msg{
+		"started": deviceStartedMsg{old, api.DeviceLogin{DeviceCode: "d", UserCode: "X", Interval: 5}},
+		"poll":    devicePollMsg{old},
+		"pending": devicePendingMsg{attempt: old},
+		"failed":  deviceFailedMsg{old, api.ErrDeviceExpired},
+	} {
+		next, cmd := update(t, m, msg)
+		if cmd != nil || next.sso.active || next.sso.login != nil || next.loginErr != "" {
+			t.Errorf("%s from a cancelled attempt was acted on: %+v err %q", name, next.sso, next.loginErr)
+		}
+	}
+
+	// A new attempt is not confused by the old one's messages either.
+	m, _ = update(t, m, ctrlO())
+	if m.sso.attempt == old {
+		t.Fatal("a new attempt must have a new number")
+	}
+	if _, cmd := update(t, m, devicePollMsg{old}); cmd != nil {
+		t.Error("the old attempt's poll must not run in the new one")
+	}
+}
+
+func TestSSO_NoPasswordsStartsByItselfAndEnterRestarts(t *testing.T) {
+	m, cmd := offering(t, "http://test", ssoOnly(), "")
+	if !m.sso.active || cmd == nil {
+		t.Fatal("a server with no passwords should start signing in with SSO straight away")
+	}
+	m = m.cancelSSO()
+	view := m.View()
+	if strings.Contains(view, "Username:") || !strings.Contains(view, "This server signs in with Authentik") {
+		t.Errorf("no password form on an SSO-only server:\n%s", view)
+	}
+	if !strings.Contains(view, "enter·sign in with Authentik") {
+		t.Errorf("the footer should say what enter does:\n%s", view)
+	}
+	if m, cmd = update(t, m, tea.KeyMsg{Type: tea.KeyEnter}); !m.sso.active || cmd == nil {
+		t.Error("enter should start it again")
+	}
+}
+
+func TestSSO_ConfigPrefersItWhenOffered(t *testing.T) {
+	if m, cmd := offering(t, "http://test", both(), "sso"); !m.sso.active || cmd == nil {
+		t.Error("auth: sso should start by itself when the server offers it")
+	}
+	// ...and shows the password form when it does not, rather than a dead end.
+	m, cmd := offering(t, "http://test", api.AuthConfig{PasswordLogin: true}, "sso")
+	if m.sso.active || cmd != nil || !strings.Contains(m.View(), "Username:") {
+		t.Error("auth: sso against a server without SSO must fall back to the form")
+	}
+	if m, cmd := offering(t, "http://test", both(), "password"); m.sso.active || cmd != nil {
+		t.Error("auth: password must not start SSO")
+	}
+}
+
+func TestSSO_ExpiredAndRefusedReturnToTheFormWithAReason(t *testing.T) {
+	for name, tc := range map[string]struct {
+		err  error
+		want string
+	}{
+		"expired": {api.ErrDeviceExpired, "expired"},
+		"refused": {api.ErrDeviceDenied, "refused"},
+		"no sso":  {&api.StatusError{Code: 404}, "does not offer"},
+		"limited": {&api.StatusError{Code: 429}, "too many"},
+		"other":   {errors.New("dial tcp: refused"), "Authentik failed"},
+	} {
+		m, _ := offering(t, "http://test", both(), "")
+		m, _ = update(t, m, ctrlO())
+		m, cmd := update(t, m, deviceFailedMsg{m.sso.attempt, tc.err})
+		if cmd != nil || m.sso.active || !strings.Contains(m.loginErr, tc.want) {
+			t.Errorf("%s: active %v err %q, want it to contain %q", name, m.sso.active, m.loginErr, tc.want)
+		}
+		if !strings.Contains(m.View(), tc.want) {
+			t.Errorf("%s: the reason is not shown:\n%s", name, m.View())
+		}
+	}
+}
+
+func TestSSO_SlowDownLengthensTheInterval(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "")
+	m, _ = update(t, m, ctrlO())
+	m, _ = update(t, m, deviceStartedMsg{m.sso.attempt, api.DeviceLogin{DeviceCode: "d", UserCode: "A", VerificationURL: "u", Interval: 5, ExpiresIn: 60}})
+	m, cmd := update(t, m, devicePendingMsg{attempt: m.sso.attempt, slower: true})
+	if m.sso.interval != 10*time.Second || cmd == nil {
+		t.Errorf("interval %v, cmd %v; want 10s and another poll", m.sso.interval, cmd != nil)
+	}
+}
+
+func TestSSO_ADeadConnectionEndsTheWaitButABlipDoesNot(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "")
+	m, _ = update(t, m, ctrlO())
+	m, _ = update(t, m, deviceStartedMsg{m.sso.attempt, api.DeviceLogin{DeviceCode: "d", UserCode: "A", VerificationURL: "u", Interval: 5, ExpiresIn: 60}})
+	blip := errors.New("connection reset")
+
+	// Two failures, then a good answer: the count starts over.
+	for range 2 {
+		m, _ = update(t, m, devicePendingMsg{attempt: m.sso.attempt, err: blip})
+	}
+	m, _ = update(t, m, devicePendingMsg{attempt: m.sso.attempt})
+	if !m.sso.active || m.sso.failures != 0 {
+		t.Fatalf("a good answer should reset the failures: %+v", m.sso)
+	}
+
+	// Three in a row is a dead connection.
+	var cmd tea.Cmd
+	for range maxPollFailures {
+		m, cmd = update(t, m, devicePendingMsg{attempt: m.sso.attempt, err: blip})
+	}
+	if m.sso.active || cmd != nil || !strings.Contains(m.loginErr, "connection reset") {
+		t.Errorf("expected to give up with the reason: active %v err %q", m.sso.active, m.loginErr)
+	}
+}
+
+func TestSSO_TypingGoesNowhereWhileWaiting(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "")
+	m, _ = update(t, m, ctrlO())
+	m = typeInto(t, m, "hunter2")
+	if got := m.loginInputs[m.loginFocus].Value(); got != "" {
+		t.Errorf("keys typed during the wait ended up in a field: %q", got)
+	}
+	if _, cmd := update(t, m, tea.KeyMsg{Type: tea.KeyEnter}); cmd != nil {
+		t.Error("enter during the wait must not start anything")
+	}
+}
+
+// After the session ends the form comes back; it must still know what the
+// server offers, and follow the config's preference without a second question.
+func TestSSO_SessionEndingReturnsToSSOWhenPreferred(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "sso")
+	m = m.cancelSSO()
+	m.mode = modeDashboard // signed in, as loginDoneMsg leaves it
+	m, _ = update(t, m, connectedMsg{})
+	m, cmd := update(t, m, fetchDataErrMsg{&api.StatusError{Code: 401}})
+	if m.mode != modeLogin || m.authInfo == nil {
+		t.Fatalf("expected the form with what the server offers kept: mode %v info %v", m.mode, m.authInfo)
+	}
+	if !m.sso.active || cmd == nil {
+		t.Error("with auth: sso an ended session should go straight to SSO")
+	}
+}
+
+func TestSSO_SigningOutDoesNotSignStraightBackIn(t *testing.T) {
+	m, _ := offering(t, "http://test", both(), "sso")
+	m = m.cancelSSO()
+	m.mode = modeDashboard
+	m, _ = update(t, m, connectedMsg{})
+	m, cmd := update(t, m, logoutDoneMsg{})
+	if m.mode != modeLogin || m.sso.active || cmd != nil {
+		t.Errorf("a deliberate sign-out must wait: mode %v active %v", m.mode, m.sso.active)
+	}
+}
+
+// A session that ends before the server was ever asked (the TUI started on a
+// saved session) still has to learn what to offer.
+func TestSSO_LearnsWhatIsOfferedWhenTheSessionEndsFirst(t *testing.T) {
+	c := api.NewClient("http://test")
+	c.SetSession("saved")
+	m := NewModel(c, "http://test", time.Minute, signedOut("x").theme)
+	m.width, m.height = 120, 40
+	m, cmd := update(t, m, fetchDataErrMsg{&api.StatusError{Code: 401}})
+	if m.mode != modeLogin || m.authInfo != nil || cmd == nil {
+		t.Errorf("expected the form and a question to the server: mode %v info %v cmd %v", m.mode, m.authInfo, cmd != nil)
+	}
+}

internal/tui/styles.go

@@ -1,45 +1,186 @@
 package tui
 
-import "github.com/charmbracelet/lipgloss"
+import (
+	"strings"
 
-var (
-	colorPrimary  = lipgloss.Color("69")  // blue
-	colorMuted    = lipgloss.Color("240") // gray
-	colorFiring   = lipgloss.Color("196") // red
-	colorResolved = lipgloss.Color("70")  // green
-	colorAccent   = lipgloss.Color("214") // orange
-
-	styleHeader = lipgloss.NewStyle().
-			Bold(true).
-			Foreground(colorPrimary).
-			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)
+	"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"
 )
+
+// Styles is every style the views draw with, built once from a theme and held
+// on the Model. Nothing here reads a colour literal: the theme is the only
+// place a colour is named.
+type Styles struct {
+	Header      lipgloss.Style
+	TabActive   lipgloss.Style
+	TabInactive lipgloss.Style
+	Footer      lipgloss.Style
+	Status      lipgloss.Style
+
+	Error     lipgloss.Style
+	Firing    lipgloss.Style
+	Resolved  lipgloss.Style
+	Muted     lipgloss.Style
+	Accent    lipgloss.Style
+	AlertName lipgloss.Style
+	Bold      lipgloss.Style
+	Selected  lipgloss.Style
+
+	// Incident status. Triggered is unclaimed work and reads as loudly as a
+	// firing alert; acknowledged means somebody has it.
+	Triggered    lipgloss.Style
+	Acknowledged lipgloss.Style
+	Snoozed      lipgloss.Style
+
+	// Severity, over the conventional Alertmanager label values.
+	SevCritical lipgloss.Style
+	SevError    lipgloss.Style
+	SevWarning  lipgloss.Style
+	SevInfo     lipgloss.Style
+
+	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 (s Styles) Severity(severity string) lipgloss.Style {
+	switch strings.ToLower(severity) {
+	case "critical":
+		return s.SevCritical
+	case "error":
+		return s.SevError
+	case "warning":
+		return s.SevWarning
+	case "info":
+		return s.SevInfo
+	default:
+		return s.Muted
+	}
+}
+
+// IncidentStatus picks the style for an incident status, falling back to muted
+// for statuses added after this client was built.
+func (s Styles) IncidentStatus(status string) lipgloss.Style {
+	switch status {
+	case api.StatusTriggered:
+		return s.Triggered
+	case api.StatusAcknowledged:
+		return s.Acknowledged
+	case api.StatusResolved:
+		return s.Resolved
+	default:
+		return s.Muted
+	}
+}
+
+// TeamColor picks a stable identity colour for a team id, so the same team
+// always reads the same colour without the server needing to store one.
+func (s Styles) TeamColor(teamID int64) lipgloss.Style {
+	n := int64(len(s.theme.Identity))
+	i := teamID % n
+	if i < 0 { // ids are never negative in practice, but % can still return one
+		i += n
+	}
+	return lipgloss.NewStyle().Foreground(s.theme.Identity[i])
+}
+
+// ── 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 +1,161 @@
+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)
+			}
+		}
+		for i := range th.Identity {
+			if s.TeamColor(int64(i)).GetForeground() == (lipgloss.NoColor{}) {
+				t.Errorf("%s: identity %d has no foreground", th.Name, i)
+			}
+		}
+	}
+}
+
+// TestStyles_TeamColorIsStableAndDistinct checks the property the header badge
+// and the team picker both rely on: the same id always reads the same colour,
+// and ids that differ (up to the size of the palette) read as different
+// colours rather than all collapsing to one.
+func TestStyles_TeamColorIsStableAndDistinct(t *testing.T) {
+	s := newStyles(theme.GruvboxDark)
+
+	seen := make(map[lipgloss.Color]bool)
+	for id := int64(0); id < 6; id++ {
+		seen[s.TeamColor(id).GetForeground().(lipgloss.Color)] = true
+	}
+	if len(seen) != 6 {
+		t.Errorf("expected 6 distinct colours across 6 ids, got %d", len(seen))
+	}
+
+	// ids repeat past the palette size, and a negative id (never sent by the
+	// server, but cheap to guard) must not panic.
+	if s.TeamColor(6).GetForeground() != s.TeamColor(0).GetForeground() {
+		t.Error("the palette should wrap rather than index out of range")
+	}
+	if got := s.TeamColor(-1).GetForeground(); got == (lipgloss.NoColor{}) {
+		t.Error("a negative id should still resolve to a colour, not panic or fall back to none")
+	}
+}
+
+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/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_test.go

@@ -0,0 +1,368 @@
+package tui
+
+import (
+	"regexp"
+	"strings"
+	"testing"
+	"time"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// ansi matches the escape sequences lipgloss emits when it decides the output
+// supports colour, so assertions can be made against the text alone.
+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)
+	for _, w := range wants {
+		if !strings.Contains(got, w) {
+			t.Errorf("expected output to contain %q\n--- got ---\n%s", w, got)
+		}
+	}
+}
+
+func TestIncidentDetail_RendersTheWholeStory(t *testing.T) {
+	now := time.Now()
+	ackID := int64(1)
+	alertID := int64(3)
+	inc := api.Incident{
+		ID: 1, Title: "DiskFull (namespace=prod)", Status: api.StatusAcknowledged,
+		Severity:    "critical",
+		GroupLabels: map[string]string{"alertname": "DiskFull", "namespace": "prod"},
+		TriggeredAt: now.Add(-2 * time.Hour),
+		AssignedTo:  "admin", AcknowledgedByID: &ackID, AcknowledgedBy: "admin",
+		AcknowledgedAt: &now,
+		Alerts: []api.Alert{
+			{ID: 3, Name: "DiskFull", Status: "firing",
+				Labels: map[string]string{"instance": "node-1"}, ReceivedAt: now},
+			{ID: 4, Name: "DiskFull", Status: "resolved",
+				Labels: map[string]string{"instance": "node-2"}, ReceivedAt: now},
+		},
+	}
+	timeline := []api.IncidentEvent{
+		{Type: api.EventTriggered, CreatedAt: now},
+		{Type: api.EventAssigned, Username: "admin", CreatedAt: now},
+		{Type: api.EventAlertAdded, AlertID: &alertID, CreatedAt: now},
+		{Type: api.EventAcknowledged, Username: "admin", CreatedAt: now},
+		{Type: api.EventNote, Username: "admin", Detail: "draining node-2", CreatedAt: now},
+	}
+
+	out := buildIncidentDetailContent(testStyles(), inc, timeline, nil, -1, 110)
+	mustContain(t, out,
+		"DiskFull (namespace=prod)", "ACKNOWLEDGED", "CRITICAL",
+		"Assigned:", "admin",
+		"Grouped By", "namespace", "prod",
+		"Alerts (2)", "node-1", "node-2",
+		"Timeline (5 events, 1 notes)",
+		"Incident opened", "Assigned to admin", "Alert #3 joined", "Acknowledged by admin",
+		"admin wrote", "draining node-2",
+	)
+}
+
+func TestIncidentDetail_ShowsSnooze(t *testing.T) {
+	future := time.Now().Add(2 * time.Hour)
+	inc := api.Incident{
+		Title: "Noisy", Status: api.StatusTriggered,
+		TriggeredAt: time.Now(), SnoozedUntil: &future,
+	}
+	// 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(testStyles(), inc, nil, nil, -1, 110),
+		"TRIGGERED (snoozed)", "Snoozed:", "until", "in 1h")
+}
+
+// An expired snooze is not a snooze, so it must not be reported as one.
+func TestIncidentDetail_HidesExpiredSnooze(t *testing.T) {
+	past := time.Now().Add(-time.Hour)
+	inc := api.Incident{
+		Title: "Noisy", Status: api.StatusTriggered,
+		TriggeredAt: time.Now(), SnoozedUntil: &past,
+	}
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, nil, -1, 110)), "Snoozed:") {
+		t.Error("an expired snooze should not be rendered")
+	}
+}
+
+func TestIncidentDetail_ShowsResolutionSource(t *testing.T) {
+	now := time.Now()
+	source := "manual"
+	inc := api.Incident{
+		Title: "Done", Status: api.StatusResolved, TriggeredAt: now.Add(-time.Hour),
+		ResolvedAt: &now, ResolutionSource: &source,
+	}
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, 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(testStyles(), inc, nil, 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(testStyles(), inc, nil, nil, -1, 110), "Nothing recorded yet")
+}
+
+func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
+	now := time.Now()
+	timeline := []api.IncidentEvent{
+		{Type: api.EventNote, Username: "admin", Detail: "first", CreatedAt: now},
+		{Type: api.EventNote, Username: "alice", Detail: "second", CreatedAt: now},
+	}
+	inc := api.Incident{Title: "X", Status: api.StatusTriggered, TriggeredAt: now}
+
+	out := plain(buildIncidentDetailContent(testStyles(), inc, timeline, nil, 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)
+		}
+		if strings.Contains(line, "admin wrote") && strings.HasPrefix(line, "> ") {
+			t.Errorf("expected the unselected note unmarked, got %q", line)
+		}
+	}
+}
+
+func TestIncidentStatusLabel(t *testing.T) {
+	future := time.Now().Add(time.Hour)
+	tests := []struct {
+		name string
+		inc  api.Incident
+		want string
+	}{
+		{"triggered", api.Incident{Status: api.StatusTriggered}, "● TRIGGERED"},
+		{"acknowledged", api.Incident{Status: api.StatusAcknowledged}, "◐ ACKNOWLEDGED"},
+		{"resolved", api.Incident{Status: api.StatusResolved}, "✓ RESOLVED"},
+		{"snoozed", api.Incident{Status: api.StatusTriggered, SnoozedUntil: &future},
+			"● TRIGGERED (snoozed)"},
+		// A status this client does not know about still has to render.
+		{"unknown", api.Incident{Status: "escalated"}, "ESCALATED"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := incidentStatusLabel(tt.inc); got != tt.want {
+				t.Errorf("expected %q, got %q", tt.want, got)
+			}
+		})
+	}
+}
+
+// The server may add event types after this client ships. An unknown one must
+// still appear on the timeline rather than silently vanishing.
+func TestEventLabel_UnknownTypeFallsBackToItsName(t *testing.T) {
+	got := eventLabel(api.IncidentEvent{Type: "escalated", Detail: "to sre-oncall"})
+	mustContain(t, got, "escalated", "to sre-oncall")
+}
+
+func TestEventLabel_KnownTypes(t *testing.T) {
+	alertID := int64(9)
+	tests := []struct {
+		event api.IncidentEvent
+		want  string
+	}{
+		{api.IncidentEvent{Type: api.EventTriggered}, "Incident opened"},
+		{api.IncidentEvent{Type: api.EventAlertAdded, AlertID: &alertID}, "Alert #9 joined"},
+		{api.IncidentEvent{Type: api.EventAlertResolved, AlertID: &alertID}, "Alert #9 resolved"},
+		{api.IncidentEvent{Type: api.EventAcknowledged, Username: "bo"}, "Acknowledged by bo"},
+		{api.IncidentEvent{Type: api.EventAssigned, Username: "bo"}, "Assigned to bo"},
+		{api.IncidentEvent{Type: api.EventSnoozed, Detail: "2026-08-01T00:00:00Z"},
+			"Snoozed until 2026-08-01T00:00:00Z"},
+		{api.IncidentEvent{Type: api.EventResolved, Username: "bo"}, "Resolved by bo"},
+		// No user means the server closed it via the alert cascade.
+		{api.IncidentEvent{Type: api.EventResolved}, "all alerts stopped firing"},
+		{api.IncidentEvent{Type: api.EventNotified, Username: "bo", Detail: "triggered"},
+			"Notified bo (triggered)"},
+		{api.IncidentEvent{Type: api.EventNotified, Username: "bo", Detail: "reminder"},
+			"Notified bo (reminder)"},
+		// On a notification, no user means the shared fallback topic — not that
+		// the server acted on its own.
+		{api.IncidentEvent{Type: api.EventNotified, Detail: "triggered"},
+			"Notified the fallback topic (triggered)"},
+		{api.IncidentEvent{Type: api.EventNotifyFailed, Username: "bo", Detail: "triggered: ntfy returned 502"},
+			"Notification to bo failed"},
+		{api.IncidentEvent{Type: api.EventNotifyFailed, Detail: "triggered: no route to host"},
+			"Notification to the fallback topic failed"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.event.Type, func(t *testing.T) {
+			mustContain(t, eventLabel(tt.event), tt.want)
+		})
+	}
+}
+
+// The timeline is where a page that never landed becomes visible, so both
+// outcomes have to survive into the rendered pane.
+func TestIncidentDetail_RendersNotifications(t *testing.T) {
+	now := time.Now()
+	inc := api.Incident{ID: 1, Title: "DiskFull", Status: api.StatusTriggered, TriggeredAt: now}
+	timeline := []api.IncidentEvent{
+		{Type: api.EventTriggered, CreatedAt: now},
+		{Type: api.EventNotified, Username: "niklas", Detail: "triggered", CreatedAt: now},
+		{Type: api.EventNotifyFailed, Username: "niklas",
+			Detail: "reminder: ntfy returned 502", CreatedAt: now},
+	}
+
+	got := buildIncidentDetailContent(testStyles(), inc, timeline, nil, -1, 120)
+	mustContain(t, got, "Notified niklas (triggered)", "Notification to niklas failed")
+}
+
+func TestUserNotifyEdit_SaysWhatAnEmptyValueDoes(t *testing.T) {
+	m := sized()
+	m.mode = modeUserNotifyEdit
+	m.selectedUser = api.User{ID: 1, Username: "niklas"}
+
+	mustContain(t, m.View(), "niklas", "empty to clear it", "fallback topic")
+	// The footer has to repeat it: that is where the reader looks for what a key does.
+	mustContain(t, m.renderFooter(), "empty clears the topic")
+}
+
+func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
+	now := time.Now()
+	id := int64(7)
+	alert := api.Alert{
+		ID: 3, Name: "DiskFull", Status: "firing", StartsAt: now.Add(-time.Hour),
+		ReceivedAt: now, IncidentID: &id,
+		Labels:      map[string]string{"instance": "node-1", "severity": "critical"},
+		Annotations: map[string]string{"summary": "disk 90%"},
+	}
+	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")
+}
+
+func TestAlertDetail_NoIncident(t *testing.T) {
+	alert := api.Alert{ID: 3, Name: "Orphan", Status: "resolved", ReceivedAt: time.Now()}
+	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(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(testStyles(), stats, nil, nil, nil, 110)
+	mustContain(t, out, "Incident Response", "Mean time to acknowledge", "—",
+		"nothing has been acknowledged or resolved yet")
+}
+
+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(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(testStyles(), nil, nil, nil, nil, 110), "Incident Response", "No data")
+}
+
+func TestView_TabsAndDashboardRender(t *testing.T) {
+	m := sized()
+	m.incidents = []api.Incident{{
+		ID: 1, Title: "DiskFull", Status: api.StatusTriggered, Severity: "critical",
+		AssignedTo: "admin", TriggeredAt: time.Now(),
+	}}
+	m.incidentStats = &api.IncidentStats{Triggered: 1}
+	m.rebuildIncidentTable()
+
+	mustContain(t, m.View(),
+		"Incidents", "Alerts", "Stats", "Archived", "Schedule", "Users",
+		"Triggered: 1", "filter: open",
+		"DiskFull", "critical", "admin",
+		"enter·detail")
+}
+
+func TestView_EmptyStates(t *testing.T) {
+	m := sized()
+	m.loading = false
+	mustContain(t, m.View(), "No open incidents.")
+
+	m.activeSection = sectionArchived
+	mustContain(t, m.View(), "No archived incidents.")
+}
+
+// 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, theme.GruvboxDark)
+	m.connected = true
+	m.incidentStats = &api.IncidentStats{Total: 3, Triggered: 1}
+	m.topAlerts = []api.TopAlert{{Name: "DiskFull", Count: 4}}
+	m.statsLoaded = true
+
+	next, _ := m.Update(tea.WindowSizeMsg{Width: 120, Height: 40})
+	m = next.(Model)
+	m.activeSection = sectionStats
+
+	out := m.View()
+	mustContain(t, out, "Stats", "Incident Response", "Top Alerts", "DiskFull",
+		"tab·section")
+	if strings.Contains(plain(out), "Loading statistics") {
+		t.Error("loaded stats should not show the loading placeholder")
+	}
+}
+
+func TestView_ConnectionError(t *testing.T) {
+	m := sized()
+	m.connected = false
+	m.err = errFixture{}
+	mustContain(t, m.View(), "Error:", "Press r to retry")
+}
+
+// The footer is the only place the terminal states are explained, so the
+// destructive one has to be visible before it is pressed.
+func TestFooter_IncidentDetailOffersResolveOnlyWhileOpen(t *testing.T) {
+	open := onIncident(openIncidentFixture(), nil)
+	mustContain(t, open.renderFooter(), "R·resolve", "z·snooze", "a·ack")
+
+	closed := onIncident(resolvedIncidentFixture(), nil)
+	if strings.Contains(plain(closed.renderFooter()), "R·resolve") {
+		t.Error("a resolved incident should not offer resolve")
+	}
+	mustContain(t, closed.renderFooter(), "x·archive", "c·note")
+}
+
+func TestView_ZeroWidthRendersNothing(t *testing.T) {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	if m.View() != "" {
+		t.Error("expected no output before the first window size message")
+	}
+}
+
+type errFixture struct{}
+
+func (errFixture) Error() string { return "connection refused" }
+
+func TestIncidentDetail_ShowsSimilarWithResolutionNotes(t *testing.T) {
+	now := time.Now()
+	inc := api.Incident{Title: "DiskFull", Status: api.StatusTriggered, TriggeredAt: now}
+	similar := []api.SimilarIncident{
+		{ID: 4, Title: "DiskFull (job=node)", ResolvedAt: now.Add(-48 * time.Hour),
+			ResolutionNotes: []api.IncidentEvent{{Type: api.EventResolutionNote, Detail: "rotated the logs"}}},
+		{ID: 2, Title: "DiskFull (job=node)", ResolvedAt: now.Add(-96 * time.Hour), NoteCount: 3},
+	}
+	out := plain(buildIncidentDetailContent(testStyles(), inc, nil, similar, -1, 110))
+	mustContain(t, out, "Seen before", "#4", "fixed: rotated the logs", "3 note(s), no resolution note")
+
+	// Nothing similar, no section.
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, nil, -1, 110)), "Seen before") {
+		t.Error("expected no Seen before section without similar incidents")
+	}
+}

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 +40,24 @@ func main() {
 		os.Exit(1)
 	}
 
-	client := api.NewClient(cfg.ServerURL, cfg.APIKey)
-	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval)
+	th, err := theme.Load(cfg.Theme)
+	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).
+		WithAuth(cfg.Auth).
+		WithLogin(cfg.Username, note)
 
 	p := tea.NewProgram(model, tea.WithAltScreen())
 	if _, err := p.Run(); err != nil {