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

@@ -56,34 +56,8 @@ jobs:
             git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
           fi
 
-      # 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 "$unformatted" ]` reads as success. The first
-      # draft of this step had exactly that hole.
-      - name: Format
-        run: |
-          if ! unformatted=$(gofmt -l .); then
-            echo "::error::gofmt could not parse the tree"
-            gofmt -l .    # re-run unredirected so the parse errors reach the log
-            exit 1
-          fi
-          if [ -n "$unformatted" ]; then
-            echo "::error::not gofmt'd:"
-            echo "$unformatted"
-            gofmt -d .
-            exit 1
-          fi
-
-      - name: Vet
-        run: go vet ./...
-
-      # Covers the API client against a stub server, the Update state machine, and View
-      # rendering -- all three are pure enough to test without a terminal.
-      - name: Test
-        run: go test ./...
+      # 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

@@ -8,9 +8,9 @@ name: Release
 # 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 and reports every available name
-# when it cannot find one. Renaming the pattern here breaks self-update for every
-# installed binary.
+# 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:
@@ -41,35 +41,9 @@ jobs:
           REF_NAME: ${{ github.ref_name }}
         run: git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
 
-      # 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 "$unformatted" ]` reads as success. The first
-      # draft of this step had exactly that hole.
-      - name: Format
-        run: |
-          if ! unformatted=$(gofmt -l .); then
-            echo "::error::gofmt could not parse the tree"
-            gofmt -l .    # re-run unredirected so the parse errors reach the log
-            exit 1
-          fi
-          if [ -n "$unformatted" ]; then
-            echo "::error::not gofmt'd:"
-            echo "$unformatted"
-            gofmt -d .
-            exit 1
-          fi
-
-      - name: Vet
-        run: go vet ./...
-
-      - name: Test
-        run: go test ./...
+      # 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
@@ -86,21 +60,12 @@ jobs:
           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: ${{ github.ref_name }}
-        run: |
-          set -eu
-          mkdir -p dist
-          for target in linux/amd64 linux/arm64 darwin/amd64 darwin/arm64; do
-            GOOS="${target%/*}"
-            GOARCH="${target#*/}"
-            out="dist/terdut-tui-${REF_NAME}-${GOOS}-${GOARCH}"
-            echo "building $out"
-            GOOS="$GOOS" GOARCH="$GOARCH" go build \
-              -ldflags "-X main.version=${REF_NAME}" \
-              -o "$out" .
-          done
+        run: make dist VERSION="$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
@@ -126,6 +91,28 @@ jobs:
           [ -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

.gitignore

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

.release.conf

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

CLAUDE.md

@@ -1,6 +1,6 @@
 # terdut-tui
 
-TUI client for [terdut-server](https://git.ryuvia.com/niklas/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.4.0+**.
+TUI client for [terdut-server](https://git.ryuvia.com/niklas/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.20.0+** (team-scoped API).
 
 ## Domain model
 
@@ -11,10 +11,37 @@ The server splits alerts from incidents, and this client mirrors it:
   assignee, snooze, notes and an append-only timeline. Many alerts to one incident,
   correlated by Alertmanager's `groupKey`.
 
+The server is multi-team: incidents, alerts and the schedule belong to a team, and
+the caller only sees their own teams. `Model.activeTeamID` (0 = all) narrows the
+incident and alert lists via `team_id`; the schedule is per team and uses
+`Model.scheduleTeam()`. Users have `is_admin`, and the TUI mirrors the server's
+permission rules up front (`canEditSchedule`, `canManageUser`, `isAdmin`) so a 403 is
+explained before the round trip, not after. The server has no version endpoint;
+an old one is recognised by `GET /api/teams` answering 404 (`errServerTooOld`).
+
 All user actions target incidents. Two server behaviours the UI has to respect:
 manual resolve is **terminal** (hence the confirmation prompt), and snooze is the
 non-destructive "not now" alternative.
 
+## Release
+
+Say **"Release"** (or "Release X.Y.Z") and the `release` skill runs it. This repo is
+`KIND=binary` in `.release.conf`: it publishes binaries to a Gitea release and has no image,
+chart or wrapper-chart PR. The run is gate, commit, push, tag, wait for `release.yaml`, then
+`verify-release`. Preconditions and the plan, without side effects:
+
+```sh
+~/.claude/skills/release/scripts/release-preflight          # state + suggested version
+~/.claude/skills/release/scripts/release-preflight vX.Y.Z   # validate that release
+```
+
+- `make fmt lint test` is the gate, and it **is** what `ci.yaml` and `release.yaml` run.
+- `make dist VERSION=vX.Y.Z` builds the four binaries; `make dist-assets` lists their names.
+  The pattern `terdut-tui-<tag>-<goos>-<goarch>` is the self-updater's contract with every
+  installed binary, so changing it breaks self-update.
+- **The annotated tag's message becomes the release notes** (`release.yaml` copies it, minus
+  its subject line). Write it for a reader of the release page. Never move a published tag.
+
 ## Tech stack
 
 - Go 1.25+
@@ -25,7 +52,7 @@ non-destructive "not now" alternative.
 ## Project layout
 
 ```
-main.go                      CLI entry point: flags, config load, health check, start TUI
+main.go                      CLI entry point: flags, config load, start TUI
 internal/api/client.go       REST API client — one method per endpoint
 internal/config/config.go    Config loader (~/.config/terdut-tui/config.yaml)
 internal/theme/              Colour themes: semantic tokens, built-ins, user file loader
@@ -35,7 +62,7 @@ internal/tui/                Bubbletea UI
   view.go                    View() — pure rendering
   keys.go                    keyMap (bubbles/key pattern)
   styles.go                  Styles struct — every lipgloss style, built from a theme
-internal/updater/updater.go  Self-update via GitHub Releases
+internal/updater/updater.go  Self-update via Gitea releases
 ```
 
 ## Architecture rules
@@ -54,16 +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
 ```
 
 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.
 
-The API key is a one-time secret generated by terdut-server (`POST /api/users/{id}/api-keys`).
+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
 
@@ -95,6 +130,8 @@ go build -ldflags="-X main.version=v0.1.0" -o terdut-tui .
 | 4 | On-call schedule calendar view |
 | 5 | User management and API key lifecycle |
 | 6 | Incidents: queue, timeline, ack/assign/snooze/resolve, MTTA/MTTR |
+| 7 | Teams: `T` switcher, per-team schedule, admin/disabled markers (server v0.20) |
+| 8 | Sign in as a user instead of an API key (server v0.10+ session cookie) |
 
 <!-- graymatter:instructions:begin — managed by `graymatter init`; edits inside this block are overwritten -->
 ## Memory (GrayMatter)

Makefile

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

README.md

@@ -10,12 +10,33 @@ Written in Go using [Bubbletea](https://github.com/charmbracelet/bubbletea).
 - **Incident actions** — acknowledge, assign, snooze, note, resolve and archive
 - **Timeline** — the full history of an incident, system events, pages and notes together
 - **Alert feed** — the raw read-only alerts underneath, each linked to its incident
-- **On-call schedule** — visual calendar of who is on duty, assign and remove entries
+- **Teams** — switch between your teams, or see all of them at once
+- **On-call schedule** — visual calendar of who is on duty in a team, assign and remove entries
 - **Statistics** — MTTA and MTTR, plus alert frequency by name, hour and day
 - **User management** — add and remove users, manage API keys, set each user's ntfy topic
 
-> Requires terdut-server **v0.4.0 or later**. Earlier servers have no incidents API;
-> use terdut-tui v0.3.x with those.
+> 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
 
@@ -49,9 +70,6 @@ Every delivery lands on the incident's timeline: `Notified <user> (triggered)`
 when ntfy accepted the page, and `Notification to <user> failed` when it ran out
 of retries. That second one is the one to look for when nobody's phone rang.
 
-Editing topics needs terdut-server **v0.6.0 or later**; the timeline entries need
-**v0.7.0 or later**. Against an older server the topic column stays empty and
-editing one reports the server's 404.
 
 ## Installation
 
@@ -67,12 +85,31 @@ 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
 
@@ -94,7 +131,7 @@ accent: "#fabd2f"
 A file may shadow a built-in name — `themes/gruvbox-dark.yaml` is how you tweak
 the default without renaming it.
 
-Without `extends`, every token must be set. The twelve are:
+Without `extends`, every token must be set. The eighteen are:
 
 | Token | Where it shows |
 |---|---|
@@ -107,6 +144,7 @@ Without `extends`, every token must be set. The twelve are:
 | `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
@@ -133,6 +171,8 @@ Global:
 | `esc` | Go back |
 | `r` | Refresh |
 | `f` | Cycle filter |
+| `L` | Sign out |
+| `T` | Switch team: all → each of your teams (when you have more than one) |
 | `q` | Quit |
 
 The sections, in `tab` order: Incidents · Alerts · Stats · Archived · Schedule · Users.
@@ -181,9 +221,8 @@ Schedule section:
 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. Taking somebody's shift needs terdut-server
-**v0.8.0 or later**; against an older server the assignment is refused with
-`date already assigned`.
+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:
 
@@ -193,3 +232,9 @@ Users section:
 | `t` | Edit the user's ntfy topic — submit empty to clear it |
 | `d` | Delete a user |
 | `k` | API keys for the selected user |
+| `p` | Set the selected user's web UI password — asks for the current one when it is your own |
+
+In Users, `k` and `d` act on the selected row, so move with `↑`/`↓` there rather
+than `k`. The Flags column marks administrators and disabled accounts. `n` and `d`
+are for administrators; `t`, `k` and `p` work on your own row, or on anyone's if you
+are one.

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 {
@@ -61,14 +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.
 //
 // Alerts are read-only on the server — there is nothing to acknowledge or
 // archive here. This is the raw feed, useful for checking what Alertmanager is
 // actually sending; the work queue is ListIncidents.
-func (c *Client) ListAlerts(status string, archived bool, limit int) ([]Alert, error) {
+func (c *Client) ListAlerts(teamID int64, status string, archived bool, limit int) ([]Alert, error) {
 	q := url.Values{}
+	if teamID > 0 {
+		q.Set("team_id", strconv.FormatInt(teamID, 10))
+	}
 	if status != "" {
 		q.Set("status", status)
 	}
@@ -110,8 +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
 }
@@ -127,12 +314,16 @@ func (c *Client) GetAlert(id int64) (*Alert, error) {
 
 // ── Incidents ──────────────────────────────────────────────────────────────
 
-// ListIncidents fetches the work queue. status may be "triggered",
+// ListIncidents fetches the work queue. teamID limits it to one team; 0 means
+// every team the caller belongs to. status may be "triggered",
 // "acknowledged", "resolved", or "" for the server default of open incidents
 // only. archived and snoozed each switch the list to that set rather than
 // adding to it, matching the server's filters.
-func (c *Client) ListIncidents(status string, archived, snoozed bool, limit int) ([]Incident, error) {
+func (c *Client) ListIncidents(teamID int64, status string, archived, snoozed bool, limit int) ([]Incident, error) {
 	q := url.Values{}
+	if teamID > 0 {
+		q.Set("team_id", strconv.FormatInt(teamID, 10))
+	}
 	if status != "" {
 		q.Set("status", status)
 	}
@@ -177,6 +368,18 @@ func (c *Client) GetIncidentTimeline(id int64) ([]IncidentEvent, error) {
 	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 {
@@ -258,10 +461,11 @@ func (c *Client) UnarchiveIncident(id int64) error {
 	return c.do(req, nil)
 }
 
-// AddNote appends a note to the incident's timeline.
-func (c *Client) AddNote(incidentID int64, content string) (*IncidentEvent, error) {
+// 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]string{"content": content})
+		fmt.Sprintf("/api/incidents/%d/notes", incidentID), map[string]any{"content": content, "pinned": pinned})
 	if err != nil {
 		return nil, err
 	}
@@ -318,8 +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
 	}
@@ -327,49 +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)
 }
 
-// AssignSchedule puts one user on call for the given dates.
+// 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(userID int64, dates []string, replace bool) ([]ScheduleEntry, error) {
+func (c *Client) AssignSchedule(teamID, userID int64, dates []string, replace bool) ([]ScheduleEntry, error) {
 	body := struct {
 		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, "/api/schedule", body)
+	req, err := c.newRequestWithBody(http.MethodPost, fmt.Sprintf("/api/teams/%d/schedule", teamID), body)
 	if err != nil {
 		return nil, err
 	}
@@ -377,14 +591,16 @@ func (c *Client) AssignSchedule(userID int64, dates []string, replace bool) ([]S
 	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 {
@@ -452,7 +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

@@ -2,6 +2,7 @@ package api
 
 import (
 	"encoding/json"
+	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -18,7 +19,9 @@ type call struct {
 	path   string
 	query  string
 	body   string
-	auth   string
+	cookie string
+	// authz is the Authorization header, which the client no longer sends at all.
+	authz string
 }
 
 // stub serves one canned response and records the request that fetched it.
@@ -28,22 +31,107 @@ func stub(t *testing.T, status int, response string) (*Client, *call) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		body, _ := io.ReadAll(r.Body)
 		got.method, got.path, got.query = r.Method, r.URL.Path, r.URL.RawQuery
-		got.body, got.auth = string(body), r.Header.Get("Authorization")
+		got.body, got.authz = string(body), r.Header.Get("Authorization")
+		if ck, err := r.Cookie(SessionCookie); err == nil {
+			got.cookie = ck.Value
+		}
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(status)
 		io.WriteString(w, response)
 	}))
 	t.Cleanup(srv.Close)
-	return NewClient(srv.URL, "test-key"), got
+	c := NewClient(srv.URL)
+	c.SetSession("test-session")
+	return c, got
 }
 
-func TestClient_SendsBearerToken(t *testing.T) {
+func TestClient_SendsTheSessionCookie(t *testing.T) {
 	c, got := stub(t, http.StatusOK, `[]`)
-	if _, err := c.ListIncidents("", false, false, 0); err != nil {
+	if _, err := c.ListIncidents(0, "", false, false, 0); err != nil {
 		t.Fatalf("list: %v", err)
 	}
-	if got.auth != "Bearer test-key" {
-		t.Errorf("expected bearer token, got %q", got.auth)
+	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")
 	}
 }
 
@@ -77,8 +165,10 @@ func TestClient_IncidentEndpoints(t *testing.T) {
 			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"); return err },
+		{"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 },
@@ -107,23 +197,26 @@ func TestClient_IncidentEndpoints(t *testing.T) {
 func TestListIncidents_Filters(t *testing.T) {
 	tests := []struct {
 		name     string
+		teamID   int64
 		status   string
 		archived bool
 		snoozed  bool
 		limit    int
 		want     string
 	}{
-		{"default is the open queue", "", false, false, 0, ""},
-		{"status", "triggered", false, false, 0, "status=triggered"},
-		{"archived", "resolved", true, false, 0, "archived=true&status=resolved"},
-		{"snoozed", "", false, true, 0, "snoozed=true"},
-		{"limit", "", false, false, 500, "limit=500"},
+		{"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.status, tt.archived, tt.snoozed, tt.limit); err != nil {
+			if _, err := c.ListIncidents(tt.teamID, tt.status, tt.archived, tt.snoozed, tt.limit); err != nil {
 				t.Fatalf("list: %v", err)
 			}
 			if got.query != tt.want {
@@ -170,9 +263,12 @@ func TestClient_RequestBodies(t *testing.T) {
 	// 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(3, []string{"2026-07-27"}, false); err != nil {
+		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)
 		}
@@ -180,7 +276,7 @@ func TestClient_RequestBodies(t *testing.T) {
 
 	t.Run("assign schedule with replace", func(t *testing.T) {
 		c, got := stub(t, http.StatusCreated, `[]`)
-		if _, err := c.AssignSchedule(3, []string{"2026-07-27"}, true); err != nil {
+		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}` {
@@ -246,15 +342,91 @@ func TestClient_ErrorWithoutBody(t *testing.T) {
 	}
 }
 
-// Nobody on call is a normal state, not a failure.
-func TestGetCurrentOnCall_404IsNotAnError(t *testing.T) {
-	c, _ := stub(t, http.StatusNotFound, `{"error":"no one is on call today"}`)
-	entry, err := c.GetCurrentOnCall()
+// 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("expected no error, got %v", err)
+		t.Fatalf("on call: %v", err)
 	}
-	if entry != nil {
-		t.Errorf("expected nil entry, got %+v", entry)
+	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")
 	}
 }
 
@@ -339,7 +511,7 @@ func TestAlert_DecodesIncidentLink(t *testing.T) {
 
 func TestListAlerts_ArchivedFilter(t *testing.T) {
 	c, got := stub(t, http.StatusOK, `[]`)
-	if _, err := c.ListAlerts("", true, 50); err != nil {
+	if _, err := c.ListAlerts(0, "", true, 50); err != nil {
 		t.Fatalf("list alerts: %v", err)
 	}
 	if got.path != "/api/alerts" || got.query != "archived=true&limit=50" {
@@ -363,3 +535,155 @@ func TestIncidentStats_NullAveragesStayNil(t *testing.T) {
 		t.Errorf("expected nil averages, got %v / %v", stats.MTTASeconds, stats.MTTRSeconds)
 	}
 }
+
+func TestClient_Me(t *testing.T) {
+	c, got := stub(t, http.StatusOK, `{"user":{"id":3,"username":"erik"},"has_password":true}`)
+	me, err := c.Me()
+	if err != nil {
+		t.Fatalf("me: %v", err)
+	}
+	if got.method != http.MethodGet || got.path != "/api/me" {
+		t.Errorf("expected GET /api/me, got %s %s", got.method, got.path)
+	}
+	if me.User.ID != 3 || !me.HasPassword {
+		t.Errorf("unexpected decode %+v", me)
+	}
+}
+
+func TestClient_SetPassword(t *testing.T) {
+	c, got := stub(t, http.StatusNoContent, ``)
+	if err := c.SetPassword(2, "a brand new secret", ""); err != nil {
+		t.Fatalf("set password: %v", err)
+	}
+	if got.method != http.MethodPut || got.path != "/api/users/2/password" {
+		t.Errorf("expected PUT /api/users/2/password, got %s %s", got.method, got.path)
+	}
+	// Setting someone else's password carries no current_password at all,
+	// rather than an empty one.
+	if got.body != `{"password":"a brand new secret"}` {
+		t.Errorf("unexpected body %s", got.body)
+	}
+
+	c, got = stub(t, http.StatusNoContent, ``)
+	c.SetPassword(1, "a brand new secret", "the old one")
+	if !strings.Contains(got.body, `"current_password":"the old one"`) {
+		t.Errorf("current password missing from %s", got.body)
+	}
+}
+
+// Older servers have no /api/me; the caller tells that apart by the status
+// code, so the typed error has to carry it.
+func TestClient_StatusErrorKeepsCodeAndMessage(t *testing.T) {
+	c, _ := stub(t, http.StatusNotFound, `404 page not found`)
+	_, err := c.Me()
+	var se *StatusError
+	if !errors.As(err, &se) || se.Code != http.StatusNotFound {
+		t.Fatalf("expected a 404 StatusError, got %v", err)
+	}
+	if err.Error() != "server returned 404" {
+		t.Errorf("message changed: %q", err.Error())
+	}
+}
+
+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

@@ -7,6 +7,8 @@ import "time"
 // alert belongs to.
 type Alert struct {
 	ID           int64             `json:"id"`
+	TeamID       int64             `json:"team_id"`
+	TeamName     string            `json:"team_name,omitempty"`
 	Fingerprint  string            `json:"fingerprint"`
 	Name         string            `json:"name"`
 	Status       string            `json:"status"`
@@ -25,10 +27,40 @@ type Alert struct {
 
 	// ResolutionSource records why a resolved alert left the firing state:
 	// "alertmanager" for a real resolved webhook, "expiry" when the server
-	// inferred it after the alert stopped being refreshed.
+	// inferred it after the alert stopped being refreshed, "deadman" for a
+	// dead man's switch that came back. Treat the value set as open.
 	ResolutionSource *string `json:"resolution_source,omitempty"`
 }
 
+// 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"
@@ -41,6 +73,8 @@ const (
 // groupKey Alertmanager computed from the operator's group_by configuration.
 type Incident struct {
 	ID          int64             `json:"id"`
+	TeamID      int64             `json:"team_id"`
+	TeamName    string            `json:"team_name,omitempty"`
 	GroupKey    string            `json:"group_key"`
 	Title       string            `json:"title"`
 	GroupLabels map[string]string `json:"group_labels"`
@@ -63,10 +97,17 @@ type Incident struct {
 
 	ResolvedAt *time.Time `json:"resolved_at,omitempty"`
 
-	// ResolutionSource is "alerts" when every alert stopped firing, or "manual"
-	// when a person closed it. Treat the value set as open.
+	// 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.
@@ -96,6 +137,13 @@ const (
 	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
@@ -154,6 +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
@@ -166,6 +216,14 @@ type User struct {
 	Email     string    `json:"email"`
 	CreatedAt time.Time `json:"created_at"`
 
+	// IsAdmin marks a system administrator: the only kind of user who can create
+	// or delete users and act on other people's passwords and keys.
+	IsAdmin bool `json:"is_admin"`
+
+	// DisabledAt is set when an administrator has disabled the account. A
+	// disabled user cannot sign in or use their keys.
+	DisabledAt *time.Time `json:"disabled_at,omitempty"`
+
 	// NtfyTopic is where this user's push notifications go. Nil and empty mean
 	// the same thing — no topic of their own — because the server stores a blank
 	// string as NULL. Their incidents fall back to the server's shared fallback
@@ -182,6 +240,40 @@ func (u User) Topic() string {
 	return *u.NtfyTopic
 }
 
+// IsDisabled reports whether the account has been disabled.
+func (u User) IsDisabled() bool { return u.DisabledAt != nil }
+
+// Me is GET /api/me: the caller, and whether they can sign in to the web UI.
+type Me struct {
+	User        User `json:"user"`
+	HasPassword bool `json:"has_password"`
+}
+
+// Team roles.
+const (
+	RoleOwner  = "owner"
+	RoleMember = "member"
+)
+
+// Team is a group that owns integrations, incidents, a schedule and an
+// escalation ladder. Role is the caller's role in it, and is only present on
+// the caller's own team lists (GET /api/teams).
+type Team struct {
+	ID        int64     `json:"id"`
+	Name      string    `json:"name"`
+	CreatedAt time.Time `json:"created_at"`
+	Role      string    `json:"role,omitempty"`
+}
+
+// TeamMember is one person's membership of a team.
+type TeamMember struct {
+	TeamID   int64     `json:"team_id"`
+	UserID   int64     `json:"user_id"`
+	Username string    `json:"username"`
+	Role     string    `json:"role"`
+	JoinedAt time.Time `json:"joined_at"`
+}
+
 type APIKey struct {
 	ID         int64      `json:"id"`
 	UserID     int64      `json:"user_id"`
@@ -190,3 +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

@@ -13,16 +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) {
@@ -35,7 +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>\n  theme: gruvbox-dark  # optional", 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)
 	}
@@ -48,8 +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
@@ -59,8 +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

@@ -1,30 +1,36 @@
 package theme
 
-import "sort"
+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"
+	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"
+	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:
@@ -46,6 +52,9 @@ var GruvboxDark = Theme{
 	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.
@@ -66,6 +75,8 @@ var GruvboxLight = Theme{
 	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.

internal/theme/load.go

@@ -32,6 +32,13 @@ type rawTheme struct {
 	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,
@@ -56,6 +63,12 @@ func bindings(r *rawTheme, t *Theme) []binding {
 		{"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]},
 	}
 }
 

internal/theme/load_test.go

@@ -106,6 +106,12 @@ 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")
@@ -115,6 +121,9 @@ sev_info: "#00000c"
 	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) {

internal/theme/theme.go

@@ -29,4 +29,8 @@ type Theme struct {
 	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

@@ -143,7 +143,7 @@ func TestIncidentRows(t *testing.T) {
 		{Title: "Unowned", Status: api.StatusTriggered, TriggeredAt: time.Now()},
 		{Title: "Quiet", Status: api.StatusTriggered, Severity: "info",
 			AssignedTo: "alice", SnoozedUntil: &future, TriggeredAt: time.Now()},
-	})
+	}, false)
 	if len(rows) != 3 {
 		t.Fatalf("expected 3 rows, got %d", len(rows))
 	}
@@ -159,12 +159,35 @@ func TestIncidentRows(t *testing.T) {
 	}
 }
 
+// Rows only carry a team cell when the columns have a Team header for it, or
+// every cell after it would sit under the wrong heading.
+func TestRows_TeamCellMatchesTeamColumn(t *testing.T) {
+	now := time.Now()
+	incRows := incidentRows([]api.Incident{{Title: "DiskFull", TeamName: "Ops", Status: api.StatusTriggered, TriggeredAt: now}}, true)
+	if got, want := len(incRows[0]), len(incidentColumns(120, true)); got != want {
+		t.Errorf("incident row has %d cells for %d columns", got, want)
+	}
+	if incRows[0][2] != "Ops" {
+		t.Errorf("expected the team after the title, got %v", incRows[0])
+	}
+	alRows := alertRows([]api.Alert{{Name: "DiskFull", StartsAt: now, ReceivedAt: now}}, true)
+	if got, want := len(alRows[0]), len(alertColumns(120, true)); got != want {
+		t.Errorf("alert row has %d cells for %d columns", got, want)
+	}
+	if alRows[0][1] != "—" {
+		t.Errorf("a missing team name should show an em dash, got %v", alRows[0])
+	}
+	if got, want := len(incidentRows([]api.Incident{{}}, false)[0]), len(incidentColumns(120, false)); got != want {
+		t.Errorf("incident row has %d cells for %d columns without teams", got, want)
+	}
+}
+
 func TestAlertRows_ShowIncidentLink(t *testing.T) {
 	id := int64(7)
 	rows := alertRows([]api.Alert{
 		{Name: "DiskFull", Status: "firing", IncidentID: &id},
 		{Name: "Orphan", Status: "resolved"},
-	})
+	}, false)
 	if rows[0][4] != "#7" {
 		t.Errorf("expected #7, got %q", rows[0][4])
 	}
@@ -204,31 +227,31 @@ func TestUserManageRows_ShowMissingTopic(t *testing.T) {
 // the window width.
 func TestColumnWidthsFitTheTerminal(t *testing.T) {
 	for _, width := range []int{100, 110, 140, 200} {
-		for name, cols := range map[string][]int{
-			"incident": widths(incidentColumns(width)),
-			"alert":    widths(alertColumns(width)),
+		// 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 cols {
+			for _, w := range widths(tc.cols) {
 				sum += w
 			}
-			const padding = 10 // bubbles applies Padding(0, 1) to each of five cells
+			padding := 2 * tc.cells // bubbles applies Padding(0, 1) to each cell
+			if len(tc.cols) != tc.cells {
+				t.Errorf("%s has %d columns, expected %d", name, len(tc.cols), tc.cells)
+			}
 			if sum+padding != width {
 				t.Errorf("%s columns at width %d sum to %d+%d = %d",
 					name, width, sum, padding, sum+padding)
 			}
 		}
-
-		// The users table is four cells, so its padding budget differs.
-		sum := 0
-		for _, w := range widths(userManageColumns(width)) {
-			sum += w
-		}
-		const userPadding = 8
-		if sum+userPadding != width {
-			t.Errorf("user columns at width %d sum to %d+%d = %d",
-				width, sum, userPadding, sum+userPadding)
-		}
 	}
 }
 
@@ -236,7 +259,7 @@ func TestColumnWidthsFitTheTerminal(t *testing.T) {
 // what must not happen is a negative or zero column.
 func TestColumnWidthsStayPositiveWhenNarrow(t *testing.T) {
 	for _, width := range []int{20, 40, 60} {
-		cols := append(widths(incidentColumns(width)), widths(alertColumns(width))...)
+		cols := append(widths(incidentColumns(width, true)), widths(alertColumns(width, true))...)
 		cols = append(cols, widths(userManageColumns(width))...)
 		for _, w := range cols {
 			if w < 1 {
@@ -287,6 +310,7 @@ 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

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

@@ -125,6 +125,17 @@ func (s Styles) IncidentStatus(status string) lipgloss.Style {
 	}
 }
 
+// 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

internal/tui/styles_test.go

@@ -66,6 +66,36 @@ func TestStyles_EachBuiltinIsFullyPopulated(t *testing.T) {
 				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")
 	}
 }
 

internal/tui/update.go

@@ -1,8 +1,13 @@
 package tui
 
 import (
+	"errors"
+	"fmt"
+	"net/http"
+	"slices"
 	"strconv"
 	"strings"
+	"time"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
 	"github.com/atotto/clipboard"
@@ -11,6 +16,15 @@ import (
 )
 
 func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	// A 401 from anything means the server no longer honours the session: it
+	// expired, was ended from the web UI, or the account was disabled. Whatever
+	// was being done cannot succeed, so go back to the sign-in form and say why,
+	// rather than leaving every action to fail with "server returned 401".
+	if err := msgError(msg); api.IsUnauthorized(err) && m.mode != modeLogin {
+		m, entry := m.requireLogin("your session has ended — sign in again").enterLogin(true)
+		return m, tea.Batch(forgetSessionCmd(), entry)
+	}
+
 	switch msg := msg.(type) {
 	case tea.WindowSizeMsg:
 		m.width = msg.Width
@@ -20,6 +34,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.rebuildArchivedTable()
 		m.rebuildScheduleTable()
 		m.rebuildUserPickerTable()
+		m.rebuildTeamPickerTable()
 		m.rebuildUserManageTable()
 		m.detailViewport.Width = m.width
 		m.detailViewport.Height = m.detailViewportHeight()
@@ -31,13 +46,106 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	// ── Dashboard messages ────────────────────────────────────────────────
 
+	case loginDoneMsg:
+		m.loggingIn = false
+		m.sso = ssoLogin{attempt: m.sso.attempt + 1}
+		m.loginErr = ""
+		m.loginNote = ""
+		m.loginInputs[loginPassword].Reset()
+		m.blurLoginForm()
+		m.mode = modeDashboard
+		m.err = nil
+		return m, connectCmd(m.client)
+
+	case loginErrMsg:
+		m.loggingIn = false
+		m.loginErr = loginErrorText(msg.err)
+		m.loginInputs[loginPassword].Reset()
+		m.focusLogin(loginPassword)
+		return m, nil
+
+	case logoutDoneMsg:
+		// Not auto-started even with auth: sso: somebody who has just signed out
+		// did not ask to be signed straight back in.
+		return m.requireLogin("you have signed out").enterLogin(false)
+
+	case authConfigMsg:
+		cfg := msg.cfg
+		m.authInfo = &cfg
+		if m.mode == modeLogin && m.autoStartsSSO() {
+			return m.startSSO()
+		}
+		return m, nil
+
+	case deviceStartedMsg:
+		if !m.sso.current(msg.attempt) {
+			return m, nil
+		}
+		login := msg.login
+		m.sso.login = &login
+		m.sso.interval = time.Duration(login.Interval) * time.Second
+		if m.sso.interval <= 0 {
+			m.sso.interval = defaultDevicePoll
+		}
+		return m, devicePollAfter(m.sso.attempt, m.sso.interval)
+
+	case devicePollMsg:
+		if !m.sso.current(msg.attempt) || m.sso.login == nil {
+			return m, nil
+		}
+		return m, pollDeviceCmd(m.client, m.serverURL, m.sso.attempt, m.sso.login.DeviceCode)
+
+	case devicePendingMsg:
+		if !m.sso.current(msg.attempt) {
+			return m, nil
+		}
+		if msg.err != nil {
+			if m.sso.failures++; m.sso.failures >= maxPollFailures {
+				return m.failSSO(msg.err), nil
+			}
+		} else {
+			m.sso.failures = 0
+		}
+		if msg.slower {
+			m.sso.interval += defaultDevicePoll
+		}
+		return m, devicePollAfter(m.sso.attempt, m.sso.interval)
+
+	case deviceFailedMsg:
+		if !m.sso.current(msg.attempt) {
+			return m, nil
+		}
+		return m.failSSO(msg.err), nil
+
 	case connectedMsg:
+		firstConnect := len(m.teams) == 0
 		m.connected = true
 		m.err = nil
+		m.teams = msg.teams
+		m.meID = msg.me.User.ID
+		m.isAdmin = msg.me.User.IsAdmin
+		var statusCmd tea.Cmd
+		if firstConnect && m.activeTeamID == 0 && m.defaultTeam != "" {
+			if t, ok := resolveTeam(m.teams, m.defaultTeam); ok {
+				m.activeTeamID = t.ID
+			} else {
+				m.statusMsg = fmt.Sprintf("team %q not found -- showing all teams", m.defaultTeam)
+				statusCmd = clearStatusCmd()
+			}
+		}
+		m.rebuildIncidentTable()
+		m.rebuildTable()
+		m.rebuildArchivedTable()
+		var tick tea.Cmd
+		if !m.ticking {
+			m.ticking = true
+			tick = tickCmd(m.refreshInterval)
+		}
 		return m, tea.Batch(
-			tickCmd(m.refreshInterval),
-			fetchIncidentsCmd(m.client, m.incidentFilter),
+			tick,
+			fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter),
 			fetchStatsCmd(m.client),
+			statusCmd,
 		)
 
 	case connectErrMsg:
@@ -91,6 +199,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case incidentDetailFetchedMsg:
 		m.selectedIncident = msg.incident
 		m.timeline = msg.timeline
+		m.similar = msg.similar
 		m.detailLoading = false
 		if m.noteCursor >= len(noteEvents(m.timeline)) {
 			m.noteCursor = -1
@@ -157,6 +266,17 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.rebuildUserManageTable()
 		return m, nil
 
+	case pickerReadyMsg:
+		if m.mode != modeUserPicker {
+			return m, nil // the picker was closed before the lookup came back
+		}
+		m.users = msg.users
+		m.pickerMembers = msg.members
+		m.usersLoading = false
+		m.rebuildUserPickerTable()
+		m.rebuildUserManageTable()
+		return m, nil
+
 	case apiKeyCreatedMsg:
 		m.revealedAPIKey = msg.key
 		m.mode = modeAPIKeyReveal
@@ -167,8 +287,27 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.mode = modeDashboard
 		return m, clearStatusCmd()
 
+	case meFetchedMsg:
+		if m.mode != modePasswordSet {
+			return m, nil // the form was closed before the lookup came back
+		}
+		m.pwLoading = false
+		m.pwNeedCurrent = msg.me.User.ID == m.selectedUser.ID && msg.me.HasPassword
+		m.pwFocus = pwNew
+		if m.pwNeedCurrent {
+			m.pwFocus = pwCurrent
+		}
+		m.pwInputs[m.pwFocus].Focus()
+		return m, nil
+
+	case passwordSetMsg:
+		m.statusMsg = "password set for " + msg.username + " -- their other web sessions were signed out"
+		return m, clearStatusCmd()
+
 	case userActionErrMsg:
 		m.usersLoading = false
+		m.pwLoading = false
+		m.blurPasswordForm()
 		m.statusMsg = "error: " + msg.err.Error()
 		m.mode = modeDashboard
 		return m, clearStatusCmd()
@@ -205,22 +344,32 @@ func (m Model) refreshActiveSection() tea.Cmd {
 
 	switch m.activeSection {
 	case sectionIncidents:
-		return tea.Batch(fetchIncidentsCmd(m.client, m.incidentFilter), fetchStatsCmd(m.client))
+		return tea.Batch(fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter), fetchStatsCmd(m.client))
 	case sectionAlerts:
-		return tea.Batch(fetchAlertsCmd(m.client, m.alertFilter), fetchStatsCmd(m.client))
+		return tea.Batch(fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter), fetchStatsCmd(m.client))
 	case sectionStats:
 		// Both: fetchStatsCmd feeds the Incident Response block, the other the charts.
 		return tea.Batch(fetchStatsCmd(m.client), fetchDetailStatsCmd(m.client))
 	case sectionArchived:
-		return fetchArchivedIncidentsCmd(m.client)
+		return fetchArchivedIncidentsCmd(m.client, m.activeTeamID)
 	case sectionSchedule:
-		return fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+		return m.fetchScheduleWindowCmd()
 	case sectionUsers:
 		return fetchUsersCmd(m.client)
 	}
 	return nil
 }
 
+// fetchScheduleWindowCmd reloads the schedule window for the schedule's team, or
+// does nothing when the caller belongs to none.
+func (m Model) fetchScheduleWindowCmd() tea.Cmd {
+	team, ok := m.scheduleTeam()
+	if !ok {
+		return nil
+	}
+	return fetchScheduleCmd(m.client, team.ID, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+}
+
 // routeKey passes the key to the active component then to our handler.
 func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	switch m.mode {
@@ -252,6 +401,12 @@ func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m2, ourCmd := m.handleKey(msg)
 		return m2, tea.Batch(tableCmd, ourCmd)
 
+	case modeTeamPicker:
+		var tableCmd tea.Cmd
+		m.teamPickerTable, tableCmd = m.teamPickerTable.Update(msg)
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(tableCmd, ourCmd)
+
 	case modeUserCreate:
 		var inputCmd tea.Cmd
 		m.userFormInputs[m.userFormFocus], inputCmd = m.userFormInputs[m.userFormFocus].Update(msg)
@@ -279,6 +434,22 @@ func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	case modeAPIKeyMenu, modeAPIKeyReveal:
 		return m.handleKey(msg)
 
+	case modeLogin:
+		var inputCmd tea.Cmd
+		if !m.loggingIn && !m.sso.active && m.offersPasswords() {
+			m.loginInputs[m.loginFocus], inputCmd = m.loginInputs[m.loginFocus].Update(msg)
+		}
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(inputCmd, ourCmd)
+
+	case modePasswordSet:
+		var inputCmd tea.Cmd
+		if !m.pwLoading {
+			m.pwInputs[m.pwFocus], inputCmd = m.pwInputs[m.pwFocus].Update(msg)
+		}
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(inputCmd, ourCmd)
+
 	default: // modeDashboard
 		if m.connected {
 			switch m.activeSection {
@@ -332,12 +503,18 @@ func (m Model) handleKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		return m.handleConfirmKey(msg)
 	case modeUserPicker:
 		return m.handleUserPickerKey(msg)
+	case modeTeamPicker:
+		return m.handleTeamPickerKey(msg)
 	case modeUserCreate:
 		return m.handleUserCreateKey(msg)
 	case modeUserNotifyEdit:
 		return m.handleUserNotifyEditKey(msg)
 	case modeAPIKeyMenu:
 		return m.handleAPIKeyMenuKey(msg)
+	case modePasswordSet:
+		return m.handlePasswordKey(msg)
+	case modeLogin:
+		return m.handleLoginKey(msg)
 	case modeAPIKeyCreate:
 		return m.handleAPIKeyCreateKey(msg)
 	case modeAPIKeyReveal:
@@ -379,14 +556,27 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		case sectionIncidents:
 			m.incidentFilter = nextFilter(incidentFilters, m.incidentFilter)
 			m.loading = true
-			return m, fetchIncidentsCmd(m.client, m.incidentFilter)
+			return m, fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter)
 		case sectionAlerts:
 			m.alertFilter = nextFilter(alertFilters, m.alertFilter)
 			m.loading = true
-			return m, fetchAlertsCmd(m.client, m.alertFilter)
+			return m, fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter)
 		}
 		return m, nil
 
+	case "L":
+		if !m.connected {
+			return m, nil
+		}
+		m.statusMsg = "Signing out…"
+		return m, logoutCmd(m.client)
+
+	case "T":
+		if !m.connected || len(m.teams) == 0 {
+			return m, nil
+		}
+		return m.openTeamPicker()
+
 	case "enter":
 		switch m.activeSection {
 		case sectionIncidents:
@@ -419,14 +609,14 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				m.statusMsg = "resolve the incident before archiving it"
 				return m, clearStatusCmd()
 			}
-			return m, archiveIncidentCmd(m.client, inc.ID, m.incidentFilter)
+			return m, archiveIncidentCmd(m.client, inc.ID, m.activeTeamID, m.incidentFilter)
 		case sectionArchived:
 			i := m.archivedTable.Cursor()
 			if i < 0 || i >= len(m.archivedIncidents) {
 				return m, nil
 			}
 			m.archivedLoading = true
-			return m, unarchiveIncidentCmd(m.client, m.archivedIncidents[i].ID)
+			return m, unarchiveIncidentCmd(m.client, m.archivedIncidents[i].ID, m.activeTeamID)
 		}
 		return m, nil
 
@@ -434,16 +624,18 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	case "left", "h":
 		if m.activeSection == sectionSchedule {
 			m.scheduleWindow = m.scheduleWindow.AddDate(0, 0, -7)
-			m.scheduleLoading = true
-			return m, fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			cmd := m.fetchScheduleWindowCmd()
+			m.scheduleLoading = cmd != nil
+			return m, cmd
 		}
 		return m, nil
 
 	case "right", "l":
 		if m.activeSection == sectionSchedule {
 			m.scheduleWindow = m.scheduleWindow.AddDate(0, 0, 7)
-			m.scheduleLoading = true
-			return m, fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			cmd := m.fetchScheduleWindowCmd()
+			m.scheduleLoading = cmd != nil
+			return m, cmd
 		}
 		return m, nil
 
@@ -451,6 +643,9 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionSchedule || !m.connected {
 			return m, nil
 		}
+		if !m.checkScheduleEditable() {
+			return m, clearStatusCmd()
+		}
 		m.pickerAssignWeek = false
 		return m.openUserPicker(pickerSchedule)
 
@@ -458,6 +653,9 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionSchedule || !m.connected {
 			return m, nil
 		}
+		if !m.checkScheduleEditable() {
+			return m, clearStatusCmd()
+		}
 		m.pickerAssignWeek = true
 		return m.openUserPicker(pickerSchedule)
 
@@ -487,6 +685,10 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			if cursor < 0 || cursor >= len(m.users) {
 				return m, nil
 			}
+			if !m.isAdmin {
+				m.statusMsg = "only administrators can delete users"
+				return m, clearStatusCmd()
+			}
 			m.selectedUser = m.users[cursor]
 			m.confirmTarget = confirmDeleteUser
 			m.mode = modeConfirm
@@ -497,6 +699,10 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if m.activeSection != sectionUsers || !m.connected {
 			return m, nil
 		}
+		if !m.isAdmin {
+			m.statusMsg = "only administrators can create users"
+			return m, clearStatusCmd()
+		}
 		m.userFormInputs[0].Reset()
 		m.userFormInputs[1].Reset()
 		m.userFormFocus = 0
@@ -514,6 +720,10 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			return m, nil
 		}
 		m.selectedUser = m.users[cursor]
+		if !m.canManageUser(m.selectedUser) {
+			cmd := m.refuseUserAction("notification topic")
+			return m, cmd
+		}
 		// Prefilled with what they have, so editing a topic does not mean
 		// retyping it, and clearing one is a deliberate wipe.
 		m.ntfyTopicInput.SetValue(m.selectedUser.Topic())
@@ -531,20 +741,55 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			return m, nil
 		}
 		m.selectedUser = m.users[cursor]
+		if !m.canManageUser(m.selectedUser) {
+			cmd := m.refuseUserAction("API keys")
+			return m, cmd
+		}
 		m.mode = modeAPIKeyMenu
 		return m, nil
+
+	case "p":
+		if m.activeSection != sectionUsers || !m.connected || len(m.users) == 0 {
+			return m, nil
+		}
+		cursor := m.userManageTable.Cursor()
+		if cursor >= len(m.users) {
+			return m, nil
+		}
+		m.selectedUser = m.users[cursor]
+		if !m.canManageUser(m.selectedUser) {
+			cmd := m.refuseUserAction("password")
+			return m, cmd
+		}
+		for i := range m.pwInputs {
+			m.pwInputs[i].Reset()
+			m.pwInputs[i].Blur()
+		}
+		m.pwNeedCurrent = false
+		m.pwLoading = true
+		m.mode = modePasswordSet
+		// Whether the form needs the current password depends on who the key
+		// belongs to, which the client does not otherwise know.
+		return m, fetchMeCmd(m.client)
 	}
 
 	return m, nil
 }
 
+// refuseUserAction explains a self-or-admin action declined up front, and is what
+// the status bar clears afterwards. The server refuses these with a 403 anyway.
+func (m *Model) refuseUserAction(what string) tea.Cmd {
+	m.statusMsg = "only administrators can change another user's " + what
+	return clearStatusCmd()
+}
+
 // loadSectionIfEmpty fetches a section's data the first time it is opened.
 func (m *Model) loadSectionIfEmpty() tea.Cmd {
 	switch m.activeSection {
 	case sectionAlerts:
 		if len(m.alerts) == 0 {
 			m.loading = true
-			return fetchAlertsCmd(m.client, m.alertFilter)
+			return fetchAlertsCmd(m.client, m.activeTeamID, m.alertFilter)
 		}
 	case sectionStats:
 		if !m.statsLoaded {
@@ -554,12 +799,13 @@ func (m *Model) loadSectionIfEmpty() tea.Cmd {
 	case sectionArchived:
 		if len(m.archivedIncidents) == 0 {
 			m.archivedLoading = true
-			return fetchArchivedIncidentsCmd(m.client)
+			return fetchArchivedIncidentsCmd(m.client, m.activeTeamID)
 		}
 	case sectionSchedule:
 		if len(m.scheduleDays) == 0 {
-			m.scheduleLoading = true
-			return fetchScheduleCmd(m.client, m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
+			cmd := m.fetchScheduleWindowCmd()
+			m.scheduleLoading = cmd != nil
+			return cmd
 		}
 	case sectionUsers:
 		if len(m.users) == 0 {
@@ -590,6 +836,18 @@ func (m Model) openIncident(inc api.Incident) (Model, tea.Cmd) {
 func (m Model) openUserPicker(target pickerTarget) (Model, tea.Cmd) {
 	m.pickerTarget = target
 	m.mode = modeUserPicker
+	if target == pickerSchedule {
+		// Only the team's own members can go on its rota, so who they are has to
+		// be known before anybody is offered.
+		team, ok := m.scheduleTeam()
+		if !ok {
+			m.mode = modeDashboard
+			return m, nil
+		}
+		m.pickerMembers = nil
+		m.usersLoading = true
+		return m, fetchPickerCmd(m.client, team.ID)
+	}
 	if len(m.users) == 0 {
 		m.usersLoading = true
 		return m, fetchUsersCmd(m.client)
@@ -598,6 +856,62 @@ func (m Model) openUserPicker(target pickerTarget) (Model, tea.Cmd) {
 	return m, nil
 }
 
+// openTeamPicker opens the full list of the caller's teams, plus "All teams",
+// for the "T" key to choose among rather than blindly cycling through them.
+// Team data is already loaded at connect time, so no fetch is needed.
+func (m Model) openTeamPicker() (Model, tea.Cmd) {
+	m.mode = modeTeamPicker
+	m.rebuildTeamPickerTable()
+	return m, nil
+}
+
+// selectTeam sets the active team to teamID (0 meaning all teams) and reloads
+// what depends on it. Sections that are not on screen are emptied rather than
+// fetched, so they load when next opened; the incident queue is the exception
+// because it is what the caller returns to.
+func (m Model) selectTeam(teamID int64) (Model, tea.Cmd) {
+	m.activeTeamID = teamID
+
+	m.incidents, m.alerts, m.archivedIncidents = nil, nil, nil
+	m.scheduleEntries, m.scheduleDays, m.currentOnCall = nil, nil, nil
+	m.loading = true
+	m.rebuildIncidentTable()
+	m.rebuildTable()
+	m.rebuildArchivedTable()
+	m.rebuildScheduleTable()
+
+	label := "all teams"
+	if t, ok := m.activeTeam(); ok {
+		label = t.Name
+	}
+	m.statusMsg = "Team: " + label
+
+	cmds := []tea.Cmd{clearStatusCmd()}
+	if m.activeSection != sectionIncidents {
+		cmds = append(cmds, fetchIncidentsCmd(m.client, m.activeTeamID, m.incidentFilter))
+	}
+	cmds = append(cmds, m.refreshActiveSection())
+	if m.activeSection == sectionSchedule {
+		m.scheduleLoading = true
+	}
+	return m, tea.Batch(cmds...)
+}
+
+// checkScheduleEditable says why a schedule change is refused, in the status
+// bar, and reports whether it may go ahead. The server enforces the same rule.
+func (m *Model) checkScheduleEditable() bool {
+	team, ok := m.scheduleTeam()
+	switch {
+	case !ok:
+		m.statusMsg = "you are not in any team"
+	case !m.canEditSchedule(team):
+		m.statusMsg = "only owners of " + team.Name + " can change its schedule"
+	default:
+		return true
+	}
+	return false
+}
+
 // nextFilter advances a filter cycle, wrapping at the end.
 func nextFilter(cycle []string, current string) string {
 	for i, f := range cycle {
@@ -681,13 +995,14 @@ func (m Model) handleIncidentDetailKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		if inc.ArchivedAt != nil {
 			m.archivedLoading = true
 			m.mode = modeDashboard
-			return m, unarchiveIncidentCmd(m.client, inc.ID)
+			return m, unarchiveIncidentCmd(m.client, inc.ID, m.activeTeamID)
 		}
 		m.mode = modeDashboard
-		return m, archiveIncidentCmd(m.client, inc.ID, m.incidentFilter)
+		return m, archiveIncidentCmd(m.client, inc.ID, m.activeTeamID, m.incidentFilter)
 
-	case "c":
+	case "c", "C":
 		m.mode = modeNote
+		m.notePinned = msg.String() == "C"
 		m.noteInput.Reset()
 		m.noteInput.Focus()
 		m.detailViewport.Height = m.detailViewportHeight()
@@ -780,7 +1095,7 @@ func (m Model) handleNoteKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeIncidentDetail
 		m.noteInput.Blur()
 		m.detailViewport.Height = m.detailViewportHeight()
-		return m, addNoteCmd(m.client, m.selectedIncident.ID, content)
+		return m, addNoteCmd(m.client, m.selectedIncident.ID, content, m.notePinned)
 	}
 
 	return m, nil
@@ -844,7 +1159,8 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeDashboard
 		m.pendingDeleteEntry = nil
 		m.scheduleLoading = true
-		return m, deleteScheduleEntryCmd(m.client, entry.ID,
+		team, _ := m.scheduleTeam()
+		return m, deleteScheduleEntryCmd(m.client, team.ID, entry.ID,
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 
 	case confirmDeleteUser:
@@ -861,7 +1177,8 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 			return m, nil
 		}
 		m.scheduleLoading = true
-		return m, assignScheduleCmd(m.client, p.userID, p.dates, true,
+		team, _ := m.scheduleTeam()
+		return m, assignScheduleCmd(m.client, team.ID, p.userID, p.dates, true,
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
@@ -882,10 +1199,11 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 
 	case "enter":
 		cursor := m.userPickerTable.Cursor()
-		if cursor < 0 || cursor >= len(m.users) {
+		pickable := m.pickerUsers()
+		if cursor < 0 || cursor >= len(pickable) {
 			return m, nil
 		}
-		user := m.users[cursor]
+		user := pickable[cursor]
 
 		if m.pickerTarget == pickerIncidentAssignee {
 			m.mode = modeIncidentDetail
@@ -935,13 +1253,42 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		// Nobody else loses anything, but the server rejects any date that
 		// already exists — including days this same person already holds, which
 		// is a no-op worth letting through silently.
-		return m, assignScheduleCmd(m.client, user.ID, dates, m.scheduleOccupied(dates),
+		team, _ := m.scheduleTeam()
+		return m, assignScheduleCmd(m.client, team.ID, user.ID, dates, m.scheduleOccupied(dates),
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
 	return m, nil
 }
 
+// ── Team picker ───────────────────────────────────────────────────────────
+
+// handleTeamPickerKey reads the cursor's team off the table built by
+// rebuildTeamPickerTable, where row 0 is always "All teams" and row i (i>=1)
+// is m.teams[i-1].
+func (m Model) handleTeamPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "esc":
+		m.mode = modeDashboard
+		return m, nil
+
+	case "enter":
+		cursor := m.teamPickerTable.Cursor()
+		id := int64(0)
+		if cursor > 0 {
+			i := cursor - 1
+			if i < 0 || i >= len(m.teams) {
+				return m, nil
+			}
+			id = m.teams[i].ID
+		}
+		m, cmd := m.selectTeam(id)
+		m.mode = modeDashboard
+		return m, cmd
+	}
+	return m, nil
+}
+
 // scheduleConflicts reports which of dates are already held by somebody other
 // than newUserID, and the distinct names holding them.
 //
@@ -1127,3 +1474,282 @@ func (m Model) handleAPIKeyRevokeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 
 	return m, nil
 }
+
+// ── Set password ──────────────────────────────────────────────────────────────
+
+// pwFields is the set-password form's fields in tab order.
+func (m Model) pwFields() []int {
+	if m.pwNeedCurrent {
+		return []int{pwCurrent, pwNew, pwRepeat}
+	}
+	return []int{pwNew, pwRepeat}
+}
+
+func (m *Model) blurPasswordForm() {
+	for i := range m.pwInputs {
+		m.pwInputs[i].Blur()
+	}
+}
+
+func (m Model) handlePasswordKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "esc":
+		m.blurPasswordForm()
+		m.pwLoading = false
+		m.mode = modeDashboard
+		return m, nil
+	}
+	if m.pwLoading {
+		return m, nil
+	}
+
+	switch msg.String() {
+	case "tab", "shift+tab":
+		fields := m.pwFields()
+		i := slices.Index(fields, m.pwFocus)
+		step := 1
+		if msg.String() == "shift+tab" {
+			step = len(fields) - 1
+		}
+		m.pwInputs[m.pwFocus].Blur()
+		m.pwFocus = fields[(i+step)%len(fields)]
+		m.pwInputs[m.pwFocus].Focus()
+		return m, nil
+
+	case "enter":
+		password := m.pwInputs[pwNew].Value()
+		switch {
+		case m.pwNeedCurrent && m.pwInputs[pwCurrent].Value() == "":
+			m.statusMsg = "enter your current password"
+			return m, clearStatusCmd()
+		case len(password) < minPasswordLen:
+			m.statusMsg = fmt.Sprintf("the password must be at least %d characters", minPasswordLen)
+			return m, clearStatusCmd()
+		case password != m.pwInputs[pwRepeat].Value():
+			m.statusMsg = "the two new passwords do not match"
+			return m, clearStatusCmd()
+		}
+		current := ""
+		if m.pwNeedCurrent {
+			current = m.pwInputs[pwCurrent].Value()
+		}
+		m.blurPasswordForm()
+		m.mode = modeDashboard
+		m.statusMsg = "Setting password…"
+		return m, setPasswordCmd(m.client, m.selectedUser, password, current)
+	}
+	return m, nil
+}
+
+// ── Sign in ───────────────────────────────────────────────────────────────────
+
+// msgError digs the error out of the messages that carry one, so the 401 check
+// in Update covers them all in one place.
+func msgError(msg tea.Msg) error {
+	switch msg := msg.(type) {
+	case connectErrMsg:
+		return msg.err
+	case fetchDataErrMsg:
+		return msg.err
+	case detailErrMsg:
+		return msg.err
+	case actionErrMsg:
+		return msg.err
+	case detailStatsErrMsg:
+		return msg.err
+	case scheduleFetchErrMsg:
+		return msg.err
+	case scheduleActionErrMsg:
+		return msg.err
+	case userActionErrMsg:
+		return msg.err
+	}
+	return nil
+}
+
+// requireLogin returns to the sign-in form with everything the previous session
+// loaded dropped, so a different account never sees the last one's incidents.
+func (m Model) requireLogin(note string) Model {
+	name := m.loginInputs[loginUsername].Value()
+	fresh := NewModel(m.client, m.serverURL, m.refreshInterval, m.theme)
+	fresh.width, fresh.height = m.width, m.height
+	fresh.defaultTeam = m.defaultTeam
+	fresh.authInfo, fresh.authPref = m.authInfo, m.authPref
+	fresh.ticking = m.ticking
+	fresh.mode = modeLogin
+	fresh.loginInputs[loginUsername].SetValue(name)
+	fresh.loginNote = note
+	fresh.focusLogin(loginUsername)
+	if name != "" {
+		fresh.focusLogin(loginPassword)
+	}
+	fresh.rebuildIncidentTable()
+	fresh.rebuildTable()
+	fresh.rebuildArchivedTable()
+	fresh.rebuildScheduleTable()
+	fresh.rebuildUserPickerTable()
+	fresh.rebuildUserManageTable()
+	return fresh
+}
+
+func (m *Model) blurLoginForm() {
+	for i := range m.loginInputs {
+		m.loginInputs[i].Blur()
+	}
+}
+
+func (m *Model) focusLogin(field int) {
+	m.blurLoginForm()
+	m.loginFocus = field
+	m.loginInputs[field].Focus()
+}
+
+// loginErrorText turns a failed sign-in into something to act on. The server
+// answers a wrong password, an unknown user and an account with no password with
+// the same 401, so the last one has to be named here or it reads as a typo.
+func loginErrorText(err error) string {
+	var se *api.StatusError
+	if errors.As(err, &se) {
+		switch se.Code {
+		case http.StatusUnauthorized:
+			return "invalid username or password — an account with no password cannot sign in; set one in the web UI first"
+		case http.StatusTooManyRequests:
+			return "too many attempts — wait a few minutes and try again"
+		}
+	}
+	return err.Error()
+}
+
+// ── Single sign-on ────────────────────────────────────────────────────────────
+
+// current reports whether a message belongs to the attempt in progress. Anything
+// else is the late answer of one that was cancelled, replaced or finished.
+func (s ssoLogin) current(attempt int) bool { return s.active && attempt == s.attempt }
+
+// canSSO is whether the server can sign in a client with no browser.
+func (m Model) canSSO() bool { return m.authInfo != nil && m.authInfo.DeviceLogin }
+
+// offersPasswords is whether the password form is worth showing. Until the
+// server has answered it is: the form is what a server too old to be asked has.
+func (m Model) offersPasswords() bool { return m.authInfo == nil || m.authInfo.PasswordLogin }
+
+// autoStartsSSO is whether the form should start a single sign-on login by
+// itself: when the config asks for it, and when the server has no passwords, so
+// that there is nothing else to show.
+func (m Model) autoStartsSSO() bool {
+	return m.canSSO() && !m.sso.active && (m.authPref == "sso" || !m.offersPasswords())
+}
+
+// ssoName is what the provider is called on screen.
+func (m Model) ssoName() string {
+	if m.authInfo != nil && m.authInfo.OIDC.Name != "" {
+		return m.authInfo.OIDC.Name
+	}
+	return "single sign-on"
+}
+
+// enterLogin is what to do on arriving at the sign-in form other than by
+// starting up: learn how the server can be signed in to if that is not known,
+// and, when auto is set, start a single sign-on login if the config or the
+// server's lack of passwords calls for one.
+func (m Model) enterLogin(auto bool) (Model, tea.Cmd) {
+	if m.authInfo == nil {
+		return m, authConfigCmd(m.client)
+	}
+	if auto && m.autoStartsSSO() {
+		return m.startSSO()
+	}
+	return m, nil
+}
+
+// startSSO begins a device login, replacing any earlier attempt.
+func (m Model) startSSO() (Model, tea.Cmd) {
+	m.sso = ssoLogin{attempt: m.sso.attempt + 1, active: true}
+	m.loginErr = ""
+	return m, startDeviceCmd(m.client, m.sso.attempt)
+}
+
+// cancelSSO abandons the attempt in progress. The server forgets the login when
+// it expires; there is nothing to tell it.
+func (m Model) cancelSSO() Model {
+	m.sso = ssoLogin{attempt: m.sso.attempt + 1}
+	return m
+}
+
+// failSSO ends the attempt and says why on the form.
+func (m Model) failSSO(err error) Model {
+	m = m.cancelSSO()
+	m.loginErr = ssoErrorText(err, m.ssoName())
+	return m
+}
+
+// ssoErrorText turns a failed single sign-on into something to act on.
+func ssoErrorText(err error, name string) string {
+	var se *api.StatusError
+	switch {
+	case errors.Is(err, api.ErrDeviceExpired):
+		return "the sign-in expired before it was approved — start it again"
+	case errors.Is(err, api.ErrDeviceDenied):
+		return "the sign-in was refused in the browser"
+	case errors.As(err, &se) && se.Code == http.StatusNotFound:
+		return "this server does not offer sign-in with " + name
+	case errors.As(err, &se) && se.Code == http.StatusTooManyRequests:
+		return "too many attempts — wait a few minutes and try again"
+	}
+	return "sign-in with " + name + " failed: " + err.Error()
+}
+
+func (m Model) handleLoginKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "ctrl+c":
+		return m, tea.Quit
+	case "esc":
+		// Backs out of a single sign-on wait before it quits the program, so a
+		// wrong turn does not cost the session.
+		if m.sso.active {
+			return m.cancelSSO(), nil
+		}
+		return m, tea.Quit
+	}
+	if m.loggingIn || m.sso.active {
+		return m, nil
+	}
+	if msg.String() == "ctrl+o" && m.canSSO() {
+		return m.startSSO()
+	}
+	// With no password form there is one thing to do, and enter does it.
+	if msg.String() == "enter" && !m.offersPasswords() {
+		if m.canSSO() {
+			return m.startSSO()
+		}
+		return m, nil
+	}
+
+	switch msg.String() {
+	case "tab", "shift+tab", "down", "up":
+		next := loginPassword
+		if m.loginFocus == loginPassword {
+			next = loginUsername
+		}
+		m.focusLogin(next)
+		return m, nil
+
+	case "enter":
+		username := strings.TrimSpace(m.loginInputs[loginUsername].Value())
+		password := m.loginInputs[loginPassword].Value()
+		switch {
+		case username == "":
+			m.loginErr = "enter your username"
+			m.focusLogin(loginUsername)
+			return m, nil
+		case password == "":
+			m.loginErr = "enter your password"
+			m.focusLogin(loginPassword)
+			return m, nil
+		}
+		m.loggingIn = true
+		m.loginErr = ""
+		return m, loginCmd(m.client, m.serverURL, username, password)
+	}
+	return m, nil
+}

internal/tui/update_test.go

@@ -35,6 +35,7 @@ func sized() Model {
 	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.connected = true
+	m.isAdmin = true // most handlers are being tested for what they do, not who may
 	return m
 }
 
@@ -320,6 +321,8 @@ func pickingOnCall(entries []api.ScheduleEntry, dayIndex int, week bool) Model {
 		{ID: 1, Username: "niklas", Email: "n@example.com"},
 		{ID: 2, Username: "alex", Email: "a@example.com"},
 	}
+	m.pickerTarget = pickerSchedule
+	m.pickerMembers = map[int64]bool{1: true, 2: true}
 	m.rebuildUserPickerTable()
 	m.scheduleTable.SetCursor(dayIndex)
 	m.pickerAssignWeek = week
@@ -627,7 +630,7 @@ func TestAlertDetail_JumpToIncident(t *testing.T) {
 
 // A refresh underneath a prompt would move the ground under the user.
 func TestRefreshTick_SkipsModalStates(t *testing.T) {
-	modal := []mode{modeNote, modeSnooze, modeConfirm, modeUserPicker, modeUserCreate}
+	modal := []mode{modeNote, modeSnooze, modeConfirm, modeUserPicker, modeTeamPicker, modeUserCreate}
 	for _, md := range modal {
 		m := sized()
 		m.mode = md
@@ -693,6 +696,8 @@ func containsAll(s string, subs ...string) bool {
 func TestSchedule_AssignWeekAfterStartupSizingDoesNotPanic(t *testing.T) {
 	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.connected = true
+	m.isAdmin = true
+	m.teams = []api.Team{{ID: 1, Name: "Ops", Role: api.RoleOwner}}
 	m.activeSection = sectionSchedule
 	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
 
@@ -718,9 +723,293 @@ func TestSchedule_AssignWeekAfterStartupSizingDoesNotPanic(t *testing.T) {
 	if m.mode != modeUserPicker {
 		t.Fatalf("W did not open the user picker, got mode %v", m.mode)
 	}
+	// The picker waits for the team's members before offering anybody.
+	next, _ = m.Update(pickerReadyMsg{
+		users:   []api.User{{ID: 1, Username: "niklas", Email: "n@example.com"}},
+		members: map[int64]bool{1: true},
+	})
+	m = next.(Model)
 	m, _ = press(t, m, "enter") // panicked here
 
 	if m.mode == modeUserPicker {
 		t.Fatal("enter left the picker open; the assignment never went anywhere")
 	}
 }
+
+// ── Teams ─────────────────────────────────────────────────────────────────
+
+func twoTeams() []api.Team {
+	return []api.Team{
+		{ID: 1, Name: "Ops", Role: api.RoleOwner},
+		{ID: 2, Name: "Dev", Role: api.RoleMember},
+	}
+}
+
+func TestConnected_LoadsTeamsAndWhoIAm(t *testing.T) {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	next, _ := m.Update(connectedMsg{
+		teams: twoTeams(),
+		me:    api.Me{User: api.User{ID: 7, IsAdmin: true}},
+	})
+	m = next.(Model)
+	if len(m.teams) != 2 || m.meID != 7 || !m.isAdmin {
+		t.Errorf("expected teams, id and admin flag to be kept, got %+v %d %v", m.teams, m.meID, m.isAdmin)
+	}
+	if m.activeTeamID != 0 {
+		t.Errorf("with no default team every team shows, got active %d", m.activeTeamID)
+	}
+}
+
+func TestConnected_DefaultTeamFromConfig(t *testing.T) {
+	for _, want := range []string{"dev", "2"} { // by name, any case, or by id
+		m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark).WithDefaultTeam(want)
+		next, _ := m.Update(connectedMsg{teams: twoTeams()})
+		if got := next.(Model).activeTeamID; got != 2 {
+			t.Errorf("default team %q: expected team 2, got %d", want, got)
+		}
+	}
+
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark).WithDefaultTeam("nope")
+	next, cmd := m.Update(connectedMsg{teams: twoTeams()})
+	m = next.(Model)
+	if m.activeTeamID != 0 || !strings.Contains(m.statusMsg, "nope") {
+		t.Errorf("an unknown default should fall back to all teams and say so, got %d %q",
+			m.activeTeamID, m.statusMsg)
+	}
+	if cmd == nil {
+		t.Error("expected the initial fetches to still be issued")
+	}
+}
+
+func TestTeamPicker_Opens(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	m, cmd := press(t, m, "T")
+	if m.mode != modeTeamPicker {
+		t.Fatalf("T should open the team picker, got mode %v", m.mode)
+	}
+	if cmd != nil {
+		t.Error("opening the picker should not itself trigger a reload")
+	}
+}
+
+// Row 0 of the picker table is always "All teams"; row i (i>=1) is
+// m.teams[i-1] — see rebuildTeamPickerTable.
+func TestTeamPicker_SelectTeamClearsRowsFromTheOtherTeam(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	m.incidents = []api.Incident{{ID: 1, Title: "old", TeamName: "Ops"}}
+	m.rebuildIncidentTable()
+
+	m, _ = press(t, m, "T")
+	m.teamPickerTable.SetCursor(1) // twoTeams()[0] is Ops
+	m, cmd := press(t, m, "enter")
+	if cmd == nil {
+		t.Fatal("selecting a team should reload")
+	}
+	if m.mode != modeDashboard {
+		t.Fatalf("enter should close the picker, got mode %v", m.mode)
+	}
+	if m.activeTeamID != 1 {
+		t.Fatalf("expected team 1 (Ops) active, got %d", m.activeTeamID)
+	}
+	if len(m.incidents) != 0 {
+		t.Errorf("the previous team's incidents must not linger, got %d", len(m.incidents))
+	}
+	if !strings.Contains(m.statusMsg, "Ops") {
+		t.Errorf("expected the status bar to name the team, got %q", m.statusMsg)
+	}
+}
+
+func TestTeamPicker_SelectAllTeams(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	m.activeTeamID = 1
+
+	m, _ = press(t, m, "T")
+	m.teamPickerTable.SetCursor(0) // "All teams"
+	m, cmd := press(t, m, "enter")
+	if cmd == nil {
+		t.Fatal("selecting all teams should reload")
+	}
+	if m.activeTeamID != 0 {
+		t.Fatalf("expected all teams (0), got %d", m.activeTeamID)
+	}
+}
+
+func TestTeamPicker_EscCancelsWithoutChangingTeam(t *testing.T) {
+	m := sized()
+	m.teams = twoTeams()
+	m.activeTeamID = 1
+
+	m, _ = press(t, m, "T")
+	m, cmd := press(t, m, "esc")
+	if cmd != nil {
+		t.Error("cancelling should not reload")
+	}
+	if m.mode != modeDashboard {
+		t.Fatalf("esc should close the picker, got mode %v", m.mode)
+	}
+	if m.activeTeamID != 1 {
+		t.Fatalf("cancelling must not change the active team, got %d", m.activeTeamID)
+	}
+}
+
+func TestTeamPicker_NoTeamsDoesNothing(t *testing.T) {
+	m, cmd := press(t, sized(), "T")
+	if cmd != nil || m.mode == modeTeamPicker {
+		t.Errorf("without teams T has nothing to open")
+	}
+}
+
+func TestScheduleTeam(t *testing.T) {
+	m := sized()
+	if _, ok := m.scheduleTeam(); ok {
+		t.Error("no teams means no schedule")
+	}
+	m.teams = []api.Team{{ID: 2, Name: "Dev", Role: api.RoleMember}, {ID: 1, Name: "Ops", Role: api.RoleOwner}}
+	if tm, _ := m.scheduleTeam(); tm.ID != 1 {
+		t.Errorf("with all teams showing the one the caller owns is used, got %d", tm.ID)
+	}
+	m.activeTeamID = 2
+	if tm, _ := m.scheduleTeam(); tm.ID != 2 {
+		t.Errorf("the active team wins, got %d", tm.ID)
+	}
+}
+
+func TestSchedule_OnlyOwnersAndAdminsEdit(t *testing.T) {
+	m := scheduledWeek(nil)
+	m.isAdmin = false
+	m.teams = []api.Team{{ID: 1, Name: "Ops", Role: api.RoleMember}}
+	m, cmd := press(t, m, "+")
+	if m.mode == modeUserPicker {
+		t.Fatal("a plain member must not get as far as the picker")
+	}
+	if !strings.Contains(m.statusMsg, "owners of Ops") {
+		t.Errorf("expected the reason in the status bar, got %q", m.statusMsg)
+	}
+	if cmd == nil {
+		t.Error("the message should clear itself")
+	}
+
+	m.isAdmin = true // administrators may edit any team's rota
+	m.statusMsg = ""
+	m, _ = press(t, m, "+")
+	if m.mode != modeUserPicker {
+		t.Errorf("an administrator should reach the picker, got mode %v", m.mode)
+	}
+}
+
+// The picker fetches the team's members, and offers nobody until they arrive:
+// the server answers 404 for anyone else.
+func TestSchedulePicker_OffersOnlyTeamMembers(t *testing.T) {
+	m := scheduledWeek(nil)
+	m, cmd := press(t, m, "+")
+	if cmd == nil || !m.usersLoading {
+		t.Fatal("opening the picker should start loading the members")
+	}
+	if got := len(m.pickerUsers()); got != 0 {
+		t.Errorf("nobody should be offered before the members are known, got %d", got)
+	}
+
+	disabled := time.Now()
+	next, _ := m.Update(pickerReadyMsg{
+		users: []api.User{
+			{ID: 1, Username: "niklas"},
+			{ID: 2, Username: "outsider"},
+			{ID: 3, Username: "gone", DisabledAt: &disabled},
+		},
+		members: map[int64]bool{1: true, 3: true},
+	})
+	m = next.(Model)
+	got := m.pickerUsers()
+	if len(got) != 1 || got[0].Username != "niklas" {
+		t.Errorf("expected only the enabled member, got %+v", got)
+	}
+	if rows := m.userPickerTable.Rows(); len(rows) != 1 {
+		t.Errorf("the table should match, got %d rows", len(rows))
+	}
+}
+
+func TestUsers_NonAdminsCannotCreateOrDelete(t *testing.T) {
+	m := threeUsers()
+	m.isAdmin = false
+	m.meID = 1
+	m, _ = press(t, m, "n")
+	if m.mode != modeDashboard || !strings.Contains(m.statusMsg, "administrators") {
+		t.Errorf("n should be refused with a reason, got mode %v %q", m.mode, m.statusMsg)
+	}
+	m, _ = press(t, m, "d")
+	if m.mode != modeDashboard {
+		t.Errorf("d should not ask to delete for a non-admin, got mode %v", m.mode)
+	}
+}
+
+func TestUsers_NonAdminManagesOnlyThemselves(t *testing.T) {
+	m := threeUsers() // cursor on erik, id 3
+	m.isAdmin = false
+	m.meID = 1
+	for _, key := range []string{"t", "k", "p"} {
+		next, _ := press(t, m, key)
+		if next.mode != modeDashboard {
+			t.Errorf("%s on somebody else's row should be refused, got mode %v", key, next.mode)
+		}
+		if !strings.Contains(next.statusMsg, "another user's") {
+			t.Errorf("%s: expected the reason, got %q", key, next.statusMsg)
+		}
+	}
+
+	m.userManageTable.SetCursor(0) // niklas, id 1: themselves
+	if next, _ := press(t, m, "k"); next.mode != modeAPIKeyMenu {
+		t.Errorf("a user may manage their own keys, got mode %v", next.mode)
+	}
+}
+
+func TestUserFlags(t *testing.T) {
+	now := time.Now()
+	cases := []struct {
+		u    api.User
+		want string
+	}{
+		{api.User{}, "—"},
+		{api.User{IsAdmin: true}, "admin"},
+		{api.User{DisabledAt: &now}, "disabled"},
+		{api.User{IsAdmin: true, DisabledAt: &now}, "admin,disabled"},
+	}
+	for _, c := range cases {
+		if got := userFlags(c.u); got != c.want {
+			t.Errorf("userFlags(%+v) = %q, want %q", c.u, got, c.want)
+		}
+	}
+}
+
+// Rebuilding a list on every refresh must not send the cursor back to the top.
+func TestRefresh_KeepsTheCursor(t *testing.T) {
+	m := sized()
+	m.incidents = []api.Incident{{ID: 1}, {ID: 2}, {ID: 3}}
+	m.rebuildIncidentTable()
+	m.incidentTable.SetCursor(2)
+	next, _ := m.Update(incidentsFetchedMsg{incidents: m.incidents})
+	if got := next.(Model).incidentTable.Cursor(); got != 2 {
+		t.Errorf("expected the cursor to stay on row 2, got %d", got)
+	}
+}
+
+// The Team column comes and goes as the team switches, and the table must
+// survive its column count changing under rows that are already loaded.
+func TestTeamColumn_AppearsWithoutPanicking(t *testing.T) {
+	m := sized()
+	m.incidents = []api.Incident{{ID: 1, Title: "a", TeamName: "Ops"}}
+	m.rebuildIncidentTable()
+	m.teams = twoTeams()
+	m.rebuildIncidentTable() // five columns become six over a five-cell row
+	if got := len(m.incidentTable.Columns()); got != 6 {
+		t.Errorf("expected a Team column across two teams, got %d columns", got)
+	}
+	m.activeTeamID = 1
+	m.rebuildIncidentTable()
+	if got := len(m.incidentTable.Columns()); got != 5 {
+		t.Errorf("expected the Team column to go when one team is chosen, got %d", got)
+	}
+}

internal/tui/users_test.go

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

internal/tui/view.go

@@ -27,10 +27,89 @@ func (m Model) View() string {
 
 func (m Model) renderHeader() string {
 	title := m.styles.Header.Render("terdut-tui")
+	if len(m.teams) > 0 {
+		dot := m.styles.Muted.Render("●")
+		if t, ok := m.activeTeam(); ok {
+			dot = m.styles.TeamColor(t.ID).Render("●")
+		}
+		title += "  " + dot + m.styles.Muted.Render(" team: "+m.activeTeamLabel())
+	}
 	right := m.styles.Muted.Render(m.serverURL)
 	return spread(title, right, m.width)
 }
 
+// renderLogin is the sign-in form. It is the whole body: nothing else is shown
+// until the server has accepted a session.
+func (m Model) renderLogin() string {
+	var b strings.Builder
+	b.WriteString("\n  " + m.styles.Bold.Render("Sign in to "+m.serverURL) + "\n\n")
+	if m.loginNote != "" {
+		b.WriteString(m.styles.Status.Render("  "+m.loginNote) + "\n\n")
+	}
+	if m.sso.active {
+		b.WriteString(m.renderSSOWait())
+		return b.String()
+	}
+	if m.offersPasswords() {
+		b.WriteString("  " + m.styles.Header.Render("Username: ") + m.loginInputs[loginUsername].View() + "\n")
+		b.WriteString("  " + m.styles.Header.Render("Password: ") + m.loginInputs[loginPassword].View() + "\n\n")
+	} else {
+		b.WriteString(m.styles.Muted.Render("  This server signs in with "+m.ssoName()+".") + "\n\n")
+	}
+	switch {
+	case m.loggingIn:
+		b.WriteString(m.styles.Muted.Render("  Signing in…") + "\n")
+	case m.loginErr != "":
+		b.WriteString(m.styles.Error.Render("  "+m.loginErr) + "\n")
+	}
+	if m.canSSO() && m.offersPasswords() {
+		b.WriteString("\n" + m.styles.Muted.Render("  or press ctrl+o to sign in with "+m.ssoName()) + "\n")
+	}
+	return b.String()
+}
+
+// renderSSOWait is the single sign-on screen: the link to open and the code to
+// check against it, while the client waits for the approval.
+func (m Model) renderSSOWait() string {
+	var b strings.Builder
+	l := m.sso.login
+	if l == nil {
+		b.WriteString(m.styles.Muted.Render("  Contacting the server…") + "\n")
+		return b.String()
+	}
+	b.WriteString("  " + m.styles.Header.Render("Sign in with "+m.ssoName()) + "\n\n")
+	b.WriteString("  Open this link in a browser, on any device, and approve the sign-in:\n\n")
+	b.WriteString("    " + m.styles.Accent.Render(l.VerificationURL) + "\n\n")
+	b.WriteString("  " + m.styles.Header.Render("Code: ") + m.styles.Bold.Render(l.UserCode) +
+		m.styles.Muted.Render("   it should match the code on that page") + "\n\n")
+	b.WriteString(m.styles.Muted.Render(fmt.Sprintf("  Waiting for approval… good for %d minutes", (l.ExpiresIn+59)/60)) + "\n")
+	return b.String()
+}
+
+// loginHelp is the sign-in footer, which depends on what the server offers.
+func (m Model) loginHelp() string {
+	switch {
+	case m.sso.active:
+		return "  esc·cancel"
+	case !m.offersPasswords():
+		if m.canSSO() {
+			return "  enter·sign in with " + m.ssoName() + "  esc·quit"
+		}
+		return "  esc·quit"
+	case m.canSSO():
+		return "  tab·next field  enter·sign in  ctrl+o·" + m.ssoName() + "  esc·quit"
+	}
+	return "  tab·next field  enter·sign in  esc·quit"
+}
+
+// activeTeamLabel names what the lists are narrowed to.
+func (m Model) activeTeamLabel() string {
+	if t, ok := m.activeTeam(); ok {
+		return t.Name
+	}
+	return "all"
+}
+
 func (m Model) renderTabs() string {
 	var tabs []string
 	for i, name := range sectionNames {
@@ -45,6 +124,9 @@ func (m Model) renderTabs() string {
 }
 
 func (m Model) renderBody() string {
+	if m.mode == modeLogin {
+		return m.renderLogin()
+	}
 	if m.err != nil {
 		return "\n" + m.styles.Error.Render(fmt.Sprintf("  Error: %v", m.err)) +
 			"\n" + m.styles.Muted.Render("  Press r to retry.")
@@ -57,7 +139,11 @@ func (m Model) renderBody() string {
 	case modeIncidentDetail, modeAlertDetail:
 		return m.renderDetail()
 	case modeNote:
-		return m.renderPrompt(m.styles.Header.Render("Note: ") + m.noteInput.View())
+		label := "Note: "
+		if m.notePinned {
+			label = "What fixed it: "
+		}
+		return m.renderPrompt(m.styles.Header.Render(label) + m.noteInput.View())
 	case modeSnooze:
 		return m.renderPrompt(m.styles.Header.Render("Snooze for: ") + m.snoozeInput.View())
 	case modeConfirm:
@@ -71,6 +157,8 @@ func (m Model) renderBody() string {
 		}
 	case modeUserPicker:
 		return m.renderUserPicker()
+	case modeTeamPicker:
+		return m.renderTeamPicker()
 	case modeUserCreate:
 		return m.renderUserCreate()
 	case modeUserNotifyEdit:
@@ -83,6 +171,8 @@ func (m Model) renderBody() string {
 		return m.renderAPIKeyReveal()
 	case modeAPIKeyRevokeByID:
 		return m.renderAPIKeyRevokeByID()
+	case modePasswordSet:
+		return m.renderPasswordSet()
 	default:
 		return m.renderDashboard()
 	}
@@ -100,7 +190,7 @@ func (m Model) renderFooter() string {
 	switch m.mode {
 	case modeIncidentDetail:
 		if !m.selectedIncident.IsOpen() {
-			return withStatus("  x·archive  c·note  [/]·select  d·del  esc·back")
+			return withStatus("  x·archive  c·note  C·fix note  [/]·select  d·del  esc·back")
 		}
 		return withStatus("  a·ack  A·unack  R·resolve  s·assign  z·snooze  Z·unsnooze  c·note  [/]·select  d·del  esc·back")
 
@@ -126,6 +216,9 @@ func (m Model) renderFooter() string {
 		}
 		return withStatus(fmt.Sprintf("  j/k·navigate  enter·assign %s  esc·cancel", scope))
 
+	case modeTeamPicker:
+		return withStatus("  j/k·navigate  enter·select  esc·cancel")
+
 	case modeUserCreate:
 		return withStatus("  tab·next field  enter·create  esc·cancel")
 
@@ -144,25 +237,39 @@ func (m Model) renderFooter() string {
 	case modeAPIKeyRevokeByID:
 		return withStatus("  enter·revoke  esc·back")
 
+	case modePasswordSet:
+		return withStatus("  tab·next field  enter·set password  esc·cancel")
+
+	case modeLogin:
+		return "\n" + m.styles.Footer.Render(m.loginHelp())
+
 	default:
 		switch m.activeSection {
 		case sectionIncidents:
-			return withStatus("  enter·detail  x·archive  f·filter  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  x·archive  f·filter  " + m.teamHint() + "r·refresh  tab·section  L·sign out  q·quit")
 		case sectionAlerts:
-			return withStatus("  enter·detail  f·filter  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  f·filter  " + m.teamHint() + "r·refresh  tab·section  q·quit")
 		case sectionStats:
 			return withStatus("  ↑/↓·scroll  r·refresh  tab·section  q·quit")
 		case sectionArchived:
-			return withStatus("  enter·detail  x·unarchive  r·refresh  tab·section  q·quit")
+			return withStatus("  enter·detail  x·unarchive  " + m.teamHint() + "r·refresh  tab·section  q·quit")
 		case sectionSchedule:
-			return withStatus("  +·assign day  W·assign week  d·del  ←/→·shift week  tab·section  r·refresh  q·quit")
+			return withStatus("  +·assign day  W·assign week  d·del  ←/→·shift week  " + m.teamHint() + "tab·section  r·refresh  q·quit")
 		case sectionUsers:
-			return withStatus("  n·new user  t·topic  d·delete  k·API keys  r·refresh  tab·section  q·quit")
+			return withStatus("  n·new user  t·topic  d·delete  k·API keys  p·password  r·refresh  L·sign out  q·quit")
 		}
 		return "\n" + m.styles.Footer.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
 	}
 }
 
+// teamHint is the footer's team-switch key, shown only when there is a choice.
+func (m Model) teamHint() string {
+	if len(m.teams) > 1 {
+		return "T·team  "
+	}
+	return ""
+}
+
 func (m Model) confirmPrompt() string {
 	switch m.confirmTarget {
 	case confirmDeleteNote:
@@ -327,23 +434,41 @@ func (m Model) renderSchedule() string {
 		return "\n" + m.styles.Muted.Render("  Loading schedule…")
 	}
 
+	team, ok := m.scheduleTeam()
+	if !ok {
+		return "\n" + m.styles.Muted.Render("  You are not in any team, so there is no schedule to show.")
+	}
+
 	var onCallLine string
-	if m.currentOnCall != nil {
-		onCallLine = fmt.Sprintf("  On-call today: %s",
-			m.styles.AlertName.Render(m.currentOnCall.Username))
+	if len(m.currentOnCall) > 0 {
+		onCallLine = "  On-call today: " + m.styles.AlertName.Render(m.onCallNames())
 	} else {
 		onCallLine = m.styles.Muted.Render("  On-call today: nobody scheduled")
 	}
 
 	from := m.scheduleWindow
 	to := m.scheduleWindow.AddDate(0, 0, 6)
-	windowLabel := m.styles.Muted.Render(fmt.Sprintf("  %s — %s",
-		from.Format("Jan 02"), to.Format("Jan 02, 2006")))
+	windowLabel := m.styles.Muted.Render(fmt.Sprintf("  %s: %s — %s",
+		team.Name, from.Format("Jan 02"), to.Format("Jan 02, 2006")))
 
 	header := "\n" + spread(onCallLine, windowLabel, m.width) + "\n"
 	return header + m.scheduleTable.View()
 }
 
+// onCallNames lists who is on call today. With several teams each name carries
+// its team, since one person per team is on call and "alice, bob" alone would
+// not say whose.
+func (m Model) onCallNames() string {
+	parts := make([]string, len(m.currentOnCall))
+	for i, e := range m.currentOnCall {
+		parts[i] = e.Username
+		if len(m.teams) > 1 && e.TeamName != "" {
+			parts[i] += " (" + e.TeamName + ")"
+		}
+	}
+	return strings.Join(parts, ", ")
+}
+
 func (m Model) renderUserPicker() string {
 	if m.usersLoading {
 		return "\n" + m.styles.Muted.Render("  Loading users…")
@@ -380,6 +505,11 @@ func (m Model) renderUserPicker() string {
 	return header + m.userPickerTable.View()
 }
 
+func (m Model) renderTeamPicker() string {
+	header := "\n  " + m.styles.Bold.Render("Select a team:") + "\n\n"
+	return header + m.teamPickerTable.View()
+}
+
 // ── Detail ─────────────────────────────────────────────────────────────────
 
 func (m Model) renderDetail() string {
@@ -418,7 +548,7 @@ func line(style lipgloss.Style, s string) string {
 
 // ── Content builders ───────────────────────────────────────────────────────
 
-func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
+func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.IncidentEvent, similar []api.SimilarIncident, cursor, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
@@ -436,6 +566,9 @@ func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.Incid
 	b.WriteString("\n  " + title + strings.Repeat(" ", gap) + status + "\n\n")
 
 	// Timing and ownership
+	if inc.TeamName != "" {
+		b.WriteString(fmt.Sprintf("  Team:       %s\n", inc.TeamName))
+	}
 	b.WriteString(fmt.Sprintf("  Triggered:  %s  (%s)\n",
 		inc.TriggeredAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, inc.TriggeredAt)))
 
@@ -456,6 +589,10 @@ func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.Incid
 		b.WriteString(line(s.Muted, "  Acked:      not acknowledged"))
 	}
 
+	if inc.EscalationLevel > 0 {
+		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Escalation: level %d", inc.EscalationLevel)))
+	}
+
 	if inc.IsSnoozed() {
 		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
 			inc.SnoozedUntil.UTC().Format("2006-01-02 15:04 UTC"), humanUntil(now, *inc.SnoozedUntil))))
@@ -505,6 +642,22 @@ func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.Incid
 	}
 	b.WriteString("\n")
 
+	// Seen before: earlier incidents of the same kind that someone left notes on.
+	if len(similar) > 0 {
+		b.WriteString(divider(s, "Seen before", width))
+		for _, sim := range similar {
+			b.WriteString(fmt.Sprintf("  #%-6d %-44s %s\n", sim.ID, truncate(sim.Title, 44),
+				s.Muted.Render("resolved "+humanAgo(now, sim.ResolvedAt))))
+			for _, n := range sim.ResolutionNotes {
+				b.WriteString("    " + s.Resolved.Render("fixed: ") + n.Detail + "\n")
+			}
+			if len(sim.ResolutionNotes) == 0 {
+				b.WriteString(line(s.Muted, fmt.Sprintf("    %d note(s), no resolution note", sim.NoteCount)))
+			}
+		}
+		b.WriteString("\n")
+	}
+
 	// Timeline — the only history the server keeps.
 	notes := noteEvents(timeline)
 	b.WriteString(divider(s, fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
@@ -514,7 +667,7 @@ func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.Incid
 		noteIndex := 0
 		for _, e := range timeline {
 			when := s.Muted.Render(humanAgo(now, e.CreatedAt))
-			if e.Type != api.EventNote {
+			if e.Type != api.EventNote && e.Type != api.EventResolutionNote {
 				b.WriteString(fmt.Sprintf("  %-52s %s\n", eventLabel(e), when))
 				continue
 			}
@@ -524,7 +677,11 @@ func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.Incid
 				marker = s.Selected.Render("> ")
 				author = s.Selected.Render(e.Username)
 			}
-			b.WriteString(fmt.Sprintf("%s%-50s %s\n", marker, author+" wrote", when))
+			verb := " wrote"
+			if e.Type == api.EventResolutionNote {
+				verb = " noted the fix"
+			}
+			b.WriteString(fmt.Sprintf("%s%-50s %s\n", marker, author+verb, when))
 			b.WriteString("    " + e.Detail + "\n")
 			noteIndex++
 		}
@@ -598,6 +755,8 @@ func eventLabel(e api.IncidentEvent) string {
 		// the only thing that says why nobody's phone rang.
 		return truncate(fmt.Sprintf("  Notification to %s failed · %s",
 			notifiedTarget(who), e.Detail), 52)
+	case api.EventDeadmanSilent:
+		return "  Dead man's switch went silent"
 	default:
 		label := "  " + e.Type
 		if e.Detail != "" {
@@ -810,6 +969,28 @@ func (m Model) renderUserNotifyEdit() string {
 	return header + "\n" + hint + "\n" + label + m.ntfyTopicInput.View() + "\n"
 }
 
+func (m Model) renderPasswordSet() string {
+	header := fmt.Sprintf("\n  Web UI password for %s\n\n", m.styles.Bold.Render(m.selectedUser.Username))
+	if m.pwLoading {
+		return header + line(m.styles.Muted, "  Checking who this key belongs to…")
+	}
+	labels := [pwFieldCount]string{
+		pwCurrent: "  Current password:  ",
+		pwNew:     "  New password:      ",
+		pwRepeat:  "  Repeat:            ",
+	}
+	var form string
+	for _, f := range m.pwFields() {
+		label := labels[f]
+		if f == m.pwFocus {
+			label = m.styles.Selected.Render(label)
+		}
+		form += label + m.pwInputs[f].View() + "\n"
+	}
+	hint := fmt.Sprintf("  At least %d characters. Setting it signs %s out of every other\n  web UI session. API keys are not affected.", minPasswordLen, m.selectedUser.Username)
+	return header + form + "\n" + line(m.styles.Muted, hint)
+}
+
 func (m Model) renderAPIKeyMenu() string {
 	header := fmt.Sprintf("\n  API keys for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
 	warning := line(m.styles.Muted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")

internal/tui/view_test.go

@@ -57,7 +57,7 @@ func TestIncidentDetail_RendersTheWholeStory(t *testing.T) {
 		{Type: api.EventNote, Username: "admin", Detail: "draining node-2", CreatedAt: now},
 	}
 
-	out := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 110)
+	out := buildIncidentDetailContent(testStyles(), inc, timeline, nil, -1, 110)
 	mustContain(t, out,
 		"DiskFull (namespace=prod)", "ACKNOWLEDGED", "CRITICAL",
 		"Assigned:", "admin",
@@ -77,7 +77,7 @@ func TestIncidentDetail_ShowsSnooze(t *testing.T) {
 	}
 	// The exact remaining time is humanUntil's business, not this test's — a few
 	// microseconds of elapsed clock turn "in 2h" into "in 1h 59m".
-	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, nil, -1, 110),
 		"TRIGGERED (snoozed)", "Snoozed:", "until", "in 1h")
 }
 
@@ -88,7 +88,7 @@ func TestIncidentDetail_HidesExpiredSnooze(t *testing.T) {
 		Title: "Noisy", Status: api.StatusTriggered,
 		TriggeredAt: time.Now(), SnoozedUntil: &past,
 	}
-	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, -1, 110)), "Snoozed:") {
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, nil, -1, 110)), "Snoozed:") {
 		t.Error("an expired snooze should not be rendered")
 	}
 }
@@ -100,18 +100,18 @@ func TestIncidentDetail_ShowsResolutionSource(t *testing.T) {
 		Title: "Done", Status: api.StatusResolved, TriggeredAt: now.Add(-time.Hour),
 		ResolvedAt: &now, ResolutionSource: &source,
 	}
-	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
+	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, -1, 110), "nobody", "not acknowledged")
+	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, -1, 110), "Nothing recorded yet")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, nil, -1, 110), "Nothing recorded yet")
 }
 
 func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
@@ -122,7 +122,7 @@ func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
 	}
 	inc := api.Incident{Title: "X", Status: api.StatusTriggered, TriggeredAt: now}
 
-	out := plain(buildIncidentDetailContent(testStyles(), inc, timeline, 1, 110))
+	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)
@@ -212,7 +212,7 @@ func TestIncidentDetail_RendersNotifications(t *testing.T) {
 			Detail: "reminder: ntfy returned 502", CreatedAt: now},
 	}
 
-	got := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 120)
+	got := buildIncidentDetailContent(testStyles(), inc, timeline, nil, -1, 120)
 	mustContain(t, got, "Notified niklas (triggered)", "Notification to niklas failed")
 }
 
@@ -349,3 +349,20 @@ func TestView_ZeroWidthRendersNothing(t *testing.T) {
 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")
+	}
+}

main.go

@@ -7,6 +7,7 @@ import (
 
 	"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"
@@ -45,8 +46,18 @@ func main() {
 		os.Exit(1)
 	}
 
-	client := api.NewClient(cfg.ServerURL, cfg.APIKey)
-	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval, th)
+	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 {