Merge pull request 'Colour themes, defaulting to gruvbox dark' (#1) from color-themes into main

Reviewed-on: #1

.gitea/workflows/ci.yaml

@@ -0,0 +1,89 @@
+name: CI
+
+# The release workflow gates a tag, which is late: a broken commit sits green until
+# somebody decides to publish. This runs the same checks on the way in.
+#
+# push is scoped to main so that a branch pushed as part of a pull request is not checked
+# twice.
+#
+# No actions/checkout, deliberately -- same as the terdut-server, letsvisit and charts
+# workflows. The runner image is ubuntu:22.04 whose `nodejs` package is Node 12, and
+# actions/checkout@v4 is built with ES2022 static initialiser blocks, so it dies with
+# `SyntaxError: Unexpected token '{'` before running. Cloning with git directly avoids JS
+# actions entirely. This repo is public, so the clone needs no credential at all.
+#
+# `${{ }}` values are passed through `env:` and referenced as quoted shell variables: a
+# ref name is attacker-influenced by anyone who can push a branch or open a PR, and
+# expanding one straight into `run:` is a shell-injection vector.
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+# A rapid series of pushes only needs the last one checked.
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  REPO_URL: https://git.ryuvia.com/niklas/terdut-tui.git
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      # act_runner destroys a job's own volumes when it finishes, so without these every
+      # run re-downloads the whole module graph. The names must appear in the runner's
+      # container.valid_volumes allowlist (charts/act-runner in the k8s repo); unlisted
+      # volumes are dropped silently, so a workflow that looks correct can still be
+      # running uncached.
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: |
+          if [ -n "$HEAD_SHA" ]; then
+            # A pull_request ref_name is "<n>/merge", which is not a fetchable branch.
+            git clone "$REPO_URL" .
+            git checkout -q "$HEAD_SHA"
+          else
+            git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+          fi
+
+      # 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 ./...

.gitea/workflows/release.yaml

@@ -0,0 +1,142 @@
+name: Release
+
+# Checkout, interpolation and caching conventions match ci.yaml -- see the header there
+# for why there are no JS actions and why every `${{ }}` goes through `env:`.
+#
+# There is no upload-artifact/download-artifact equivalent here (both are JS actions, and
+# this Gitea has no artifact store wired up), so the job that builds the binaries is also
+# the job that publishes them. Nothing is handed between jobs.
+#
+# The asset names matter beyond being tidy: internal/updater looks for exactly
+# terdut-tui-<tag>-<goos>-<goarch> in the latest release and reports every available name
+# when it cannot find one. Renaming the pattern here breaks self-update for every
+# installed binary.
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+concurrency:
+  group: release-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  REPO_URL: https://git.ryuvia.com/niklas/terdut-tui.git
+  API: https://git.ryuvia.com/api/v1/repos/niklas/terdut-tui
+
+jobs:
+  # Gates the build, so a tag that fails here publishes no binaries.
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+        run: git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+
+      # This exists because `go vet` does not look at import order: the move to
+      # git.ryuvia.com rewrote every import path without re-sorting, the new path sorts
+      # before github.com/..., and both repos sat unformatted through a green CI run and
+      # a release before anyone noticed.
+      #
+      # Both of gofmt's failure modes need handling, and they are not alike. A file that
+      # is merely misformatted is listed on stdout with exit 0 -- so the failure has to
+      # be raised by hand. A file that does not parse is the opposite: nothing on stdout
+      # and exit 2, which a naive `[ -n "$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 ./...
+
+  binaries:
+    needs: test
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.26.6-bookworm
+      volumes:
+        - go-mod-cache:/go/pkg/mod
+        - go-build-cache:/root/.cache/go-build
+        - gobin-cache:/go/bin
+    steps:
+      - name: Checkout
+        env:
+          REF_NAME: ${{ github.ref_name }}
+        run: git clone --depth=1 --branch "$REF_NAME" "$REPO_URL" .
+
+      - 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
+
+      # Creating the release is made idempotent rather than assumed-new: a re-run of a
+      # failed release must not die on the release that already exists. Assets are
+      # replaced the same way, so a re-run repairs a partial upload.
+      - name: Publish the release
+        env:
+          REF_NAME: ${{ github.ref_name }}
+          TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+        run: |
+          set -eu
+          auth="Authorization: token $TOKEN"
+
+          body=$(curl -sf -H "$auth" "$API/releases/tags/$REF_NAME" || true)
+          if [ -z "$body" ]; then
+            body=$(curl -sf -X POST -H "$auth" -H 'Content-Type: application/json' \
+              -d "{\"tag_name\":\"$REF_NAME\",\"name\":\"$REF_NAME\"}" \
+              "$API/releases")
+          fi
+
+          # The release object serialises `id` first, so the first match is the release's
+          # own id and not one of the nested author/asset ids.
+          release_id=$(printf '%s' "$body" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)
+          [ -n "$release_id" ] || { echo "::error::could not determine release id"; exit 1; }
+          echo "release id $release_id"
+
+          for f in dist/*; do
+            name=$(basename "$f")
+            # Drop an existing asset of the same name first: Gitea happily stores two
+            # attachments with one name, and the updater matches by name.
+            old=$(curl -sf -H "$auth" "$API/releases/$release_id/assets" \
+                  | tr '}' '\n' | grep "\"name\":\"$name\"" \
+                  | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2 || true)
+            if [ -n "$old" ]; then
+              curl -sf -X DELETE -H "$auth" "$API/releases/$release_id/assets/$old" || true
+            fi
+            echo "uploading $name"
+            curl -sf -X POST -H "$auth" -F "attachment=@$f" \
+              "$API/releases/$release_id/assets?name=$name" > /dev/null
+          done

.github/workflows/ci.yml

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

.github/workflows/release.yml

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

CLAUDE.md

@@ -1,6 +1,6 @@
 # terdut-tui
 
-TUI client for [terdut-server](https://github.com/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.4.0+**.
+TUI client for [terdut-server](https://git.ryuvia.com/niklas/terdut-server), a Prometheus Alertmanager receiver and incident manager. Requires server **v0.4.0+**.
 
 ## Domain model
 
@@ -28,12 +28,13 @@ non-destructive "not now" alternative.
 main.go                      CLI entry point: flags, config load, health check, start TUI
 internal/api/client.go       REST API client — one method per endpoint
 internal/config/config.go    Config loader (~/.config/terdut-tui/config.yaml)
+internal/theme/              Colour themes: semantic tokens, built-ins, user file loader
 internal/tui/                Bubbletea UI
   model.go                   Model struct, mode/section constants, Init(), tea.Cmd constructors
   update.go                  Update() — dispatch only, no API calls inline
   view.go                    View() — pure rendering
   keys.go                    keyMap (bubbles/key pattern)
-  styles.go                  All lipgloss styles
+  styles.go                  Styles struct — every lipgloss style, built from a theme
 internal/updater/updater.go  Self-update via GitHub Releases
 ```
 
@@ -43,6 +44,9 @@ internal/updater/updater.go  Self-update via GitHub Releases
 2. **`View()` is pure** — no side effects, no state mutations.
 3. **All state in `Model`** — no globals.
 4. **All styles in `styles.go`** — never use lipgloss inline in `view.go`.
+   Styles live on `Model.styles`, built once by `newStyles(theme.Theme)`; the
+   handful of free functions in `view.go` take a `Styles` as their first
+   argument. No colour literal appears outside `internal/theme`.
 
 ## Config
 
@@ -52,8 +56,13 @@ Location: `~/.config/terdut-tui/config.yaml`
 server_url: https://terdut.example.com
 api_key: <64-char hex key>
 refresh_interval: 30  # seconds, optional, default 30
+theme: gruvbox-dark   # optional, default gruvbox-dark
 ```
 
+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`).
 
 ## Running

README.md

@@ -1,6 +1,6 @@
 # terdut-tui
 
-A terminal user interface for [terdut-server](https://github.com/terdut-server). Communicates with the server over its REST API.
+A terminal user interface for [terdut-server](https://git.ryuvia.com/niklas/terdut-server). Communicates with the server over its REST API.
 
 Written in Go using [Bubbletea](https://github.com/charmbracelet/bubbletea).
 
@@ -8,11 +8,11 @@ Written in Go using [Bubbletea](https://github.com/charmbracelet/bubbletea).
 
 - **Incident queue** — open incidents with severity, status, assignee and age, auto-refreshing
 - **Incident actions** — acknowledge, assign, snooze, note, resolve and archive
-- **Timeline** — the full history of an incident, system events and notes together
+- **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
 - **Statistics** — MTTA and MTTR, plus alert frequency by name, hour and day
-- **User management** — add and remove users, manage API keys
+- **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.
@@ -37,12 +37,28 @@ Two behaviours worth knowing before you press a key:
 - **Snooze is the "not now" button.** It hides an incident from the default queue
   without closing it, and expires on its own.
 
+## Push notifications
+
+When the server is configured for ntfy, an incident that opens pages whoever is
+on call. Each user has their own topic, shown as a column in the Users section
+and edited with `t`. A user with no topic falls back to the server's shared
+fallback topic, which carries **no Acknowledge button** — the topic is shared, so
+a button on it would let any subscriber acknowledge as somebody else.
+
+Every delivery lands on the incident's timeline: `Notified <user> (triggered)`
+when ntfy accepted the page, and `Notification to <user> failed` when it ran out
+of retries. That second one is the one to look for when nobody's phone rang.
+
+Editing topics needs terdut-server **v0.6.0 or later**; the timeline entries need
+**v0.7.0 or later**. Against an older server the topic column stays empty and
+editing one reports the server's 404.
+
 ## Installation
 
-Download the latest release binary for your platform from the [releases page](https://github.com/yeniklas/terdut-tui/releases), or build from source:
+Download the latest release binary for your platform from the [releases page](https://git.ryuvia.com/niklas/terdut-tui/releases), or build from source:
 
 ```bash
-go install github.com/yeniklas/terdut-tui@latest
+go install git.ryuvia.com/niklas/terdut-tui@latest
 ```
 
 ## Configuration
@@ -53,10 +69,49 @@ Create `~/.config/terdut-tui/config.yaml`:
 server_url: https://terdut.example.com
 api_key: <your-api-key>
 refresh_interval: 30  # seconds, optional
+theme: gruvbox-dark   # optional, this is the default
 ```
 
 The API key is generated in terdut-server. See the server documentation for how to bootstrap a user and issue an API key.
 
+## Themes
+
+Two themes ship with the client: `gruvbox-dark` (the default) and
+`gruvbox-light`. Both colour foregrounds only — the terminal supplies the
+background — so pick the one that matches the background you already run.
+
+To make your own, drop a file in `~/.config/terdut-tui/themes/` and name it in
+`theme:`. `extends` inherits a built-in, so a file only has to list what it
+changes:
+
+```yaml
+# ~/.config/terdut-tui/themes/mine.yaml
+extends: gruvbox-dark
+primary: "#d3869b"
+accent: "#fabd2f"
+```
+
+A file may shadow a built-in name — `themes/gruvbox-dark.yaml` is how you tweak
+the default without renaming it.
+
+Without `extends`, every token must be set. The twelve are:
+
+| Token | Where it shows |
+|---|---|
+| `primary` | header, active tab, selected row, cursors |
+| `on_primary` | text drawn *on* `primary` — the active tab and selected row |
+| `text` | incident titles and other emphasis |
+| `muted` | secondary text, dividers, footer, table headers |
+| `accent` | status line, acknowledged incidents, the by-day chart |
+| `firing` | firing alerts, triggered incidents, the by-hour chart |
+| `resolved` | resolved alerts and incidents, the top-alerts chart |
+| `error` | error banners |
+| `sev_critical`, `sev_error`, `sev_warning`, `sev_info` | the `severity` label |
+
+Values are hex (`#83a598` or `#abc`) or an ANSI palette index (`0`–`255`) if you
+would rather follow your terminal's own colours. Colours are downsampled
+automatically on 256- and 16-colour terminals, and `NO_COLOR` is honoured.
+
 ## Usage
 
 ```
@@ -123,10 +178,18 @@ Schedule section:
 | `d` | Remove the assignment |
 | `←` / `→` | Shift the week window |
 
+One person holds a given day. Assigning over days somebody else already has
+asks first — naming them and how many days are being taken — and moves the whole
+selection at once when you accept, so reassigning a week is one confirmation
+rather than seven deletions. Taking somebody's shift needs terdut-server
+**v0.8.0 or later**; against an older server the assignment is refused with
+`date already assigned`.
+
 Users section:
 
 | Key | Action |
 |-----|--------|
 | `n` | Create a user |
+| `t` | Edit the user's ntfy topic — submit empty to clear it |
 | `d` | Delete a user |
 | `k` | API keys for the selected user |

go.mod

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

internal/api/client.go

@@ -358,11 +358,17 @@ func (c *Client) GetCurrentOnCall() (*ScheduleEntry, error) {
 	return &entry, nil
 }
 
-func (c *Client) AssignSchedule(userID int64, dates []string) ([]ScheduleEntry, error) {
+// AssignSchedule puts one user on call for the given dates.
+//
+// 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) {
 	body := struct {
-		UserID int64    `json:"user_id"`
+		UserID  int64    `json:"user_id"`
-		Dates  []string `json:"dates"`
+		Dates   []string `json:"dates"`
-	}{UserID: userID, Dates: dates}
+		Replace bool     `json:"replace,omitempty"`
+	}{UserID: userID, Dates: dates, Replace: replace}
 	req, err := c.newRequestWithBody(http.MethodPost, "/api/schedule", body)
 	if err != nil {
 		return nil, err
@@ -401,6 +407,23 @@ func (c *Client) CreateUser(username, email string) (*User, error) {
 	return &user, c.do(req, &user)
 }
 
+// SetUserNotifyTarget points a user's push notifications at an ntfy topic.
+//
+// An empty topic clears it: the server stores NULL, and that user's incidents
+// page the shared fallback topic instead — which carries no Acknowledge button,
+// because anyone subscribed to it could otherwise acknowledge as somebody else.
+func (c *Client) SetUserNotifyTarget(userID int64, topic string) (*User, error) {
+	body := struct {
+		NtfyTopic string `json:"ntfy_topic"`
+	}{NtfyTopic: topic}
+	req, err := c.newRequestWithBody(http.MethodPut, fmt.Sprintf("/api/users/%d/notify", userID), body)
+	if err != nil {
+		return nil, err
+	}
+	var user User
+	return &user, c.do(req, &user)
+}
+
 func (c *Client) DeleteUser(id int64) error {
 	req, err := c.newRequest(http.MethodDelete, fmt.Sprintf("/api/users/%d", id))
 	if err != nil {

internal/api/client_test.go

@@ -83,6 +83,8 @@ func TestClient_IncidentEndpoints(t *testing.T) {
 			http.MethodDelete, "/api/incidents/7/notes/12", ""},
 		{"stats", func(c *Client) error { _, err := c.GetIncidentStats(); return err },
 			http.MethodGet, "/api/stats/incidents", ""},
+		{"set notify target", func(c *Client) error { _, err := c.SetUserNotifyTarget(7, "t"); return err },
+			http.MethodPut, "/api/users/7/notify", ""},
 	}
 
 	for _, tt := range tests {
@@ -163,6 +165,65 @@ func TestClient_RequestBodies(t *testing.T) {
 			t.Errorf("expected duration 90m, got %q", body.Duration)
 		}
 	})
+
+	// replace is what takes a day off its current holder, so it has to reach the
+	// wire when asked for — and stay off it when not.
+	t.Run("assign schedule", func(t *testing.T) {
+		c, got := stub(t, http.StatusCreated, `[]`)
+		if _, err := c.AssignSchedule(3, []string{"2026-07-27"}, false); err != nil {
+			t.Fatalf("assign: %v", err)
+		}
+		if got.body != `{"user_id":3,"dates":["2026-07-27"]}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
+	t.Run("assign schedule with replace", func(t *testing.T) {
+		c, got := stub(t, http.StatusCreated, `[]`)
+		if _, err := c.AssignSchedule(3, []string{"2026-07-27"}, true); err != nil {
+			t.Fatalf("assign: %v", err)
+		}
+		if got.body != `{"user_id":3,"dates":["2026-07-27"],"replace":true}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
+	t.Run("set notify target", func(t *testing.T) {
+		c, got := stub(t, http.StatusOK, `{}`)
+		if _, err := c.SetUserNotifyTarget(3, "terdut-niklas"); err != nil {
+			t.Fatalf("set notify target: %v", err)
+		}
+		if got.body != `{"ntfy_topic":"terdut-niklas"}` {
+			t.Errorf("unexpected body %q", got.body)
+		}
+	})
+
+	// Clearing has to put an explicit empty string on the wire: omitting the
+	// field would leave the topic untouched instead of removing it.
+	t.Run("clear notify target", func(t *testing.T) {
+		c, got := stub(t, http.StatusOK, `{}`)
+		if _, err := c.SetUserNotifyTarget(3, ""); err != nil {
+			t.Fatalf("clear notify target: %v", err)
+		}
+		if got.body != `{"ntfy_topic":""}` {
+			t.Errorf("expected an explicit empty topic, got %q", got.body)
+		}
+	})
+}
+
+func TestUser_TopicFlattensNilAndEmpty(t *testing.T) {
+	var users []User
+	if err := json.Unmarshal([]byte(
+		`[{"id":1,"username":"a"},{"id":2,"username":"b","ntfy_topic":""},
+		  {"id":3,"username":"c","ntfy_topic":"terdut-c"}]`), &users); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	want := []string{"", "", "terdut-c"}
+	for i, u := range users {
+		if got := u.Topic(); got != want[i] {
+			t.Errorf("user %d: expected topic %q, got %q", u.ID, want[i], got)
+		}
+	}
 }
 
 // The 409 on re-resolving is the server telling the user why nothing happened,

internal/api/types.go

@@ -95,6 +95,13 @@ const (
 	EventUnsnoozed      = "unsnoozed"
 	EventResolved       = "resolved"
 	EventNote           = "note"
+
+	// Written by the server's notifier from the delivery result, not at enqueue.
+	// Detail carries the notification kind ("triggered", "reminder", "resolved"),
+	// and on a failure the reason after it. An absent user means the page went to
+	// the shared fallback topic rather than to a person.
+	EventNotified     = "notified"
+	EventNotifyFailed = "notify_failed"
 )
 
 // IncidentEvent is one entry in an incident's timeline. An empty Username means
@@ -158,6 +165,21 @@ type User struct {
 	Username  string    `json:"username"`
 	Email     string    `json:"email"`
 	CreatedAt time.Time `json:"created_at"`
+
+	// NtfyTopic is where this user's push notifications go. Nil and empty mean
+	// the same thing — no topic of their own — because the server stores a blank
+	// string as NULL. Their incidents fall back to the server's shared fallback
+	// topic, which carries no Acknowledge button.
+	NtfyTopic *string `json:"ntfy_topic,omitempty"`
+}
+
+// Topic reads the user's ntfy topic, flattening the nil and empty cases the
+// server treats alike.
+func (u User) Topic() string {
+	if u.NtfyTopic == nil {
+		return ""
+	}
+	return *u.NtfyTopic
 }
 
 type APIKey struct {

internal/config/config.go

@@ -15,12 +15,14 @@ type Config struct {
 	ServerURL       string
 	APIKey          string
 	RefreshInterval time.Duration
+	Theme           string
 }
 
 type rawConfig struct {
 	ServerURL       string `yaml:"server_url"`
 	APIKey          string `yaml:"api_key"`
 	RefreshInterval int    `yaml:"refresh_interval,omitempty"` // seconds
+	Theme           string `yaml:"theme,omitempty"`
 }
 
 func Load() (*Config, error) {
@@ -33,7 +35,7 @@ func Load() (*Config, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {
 		if os.IsNotExist(err) {
-			return nil, fmt.Errorf("config file not found at %s\n\nCreate it with:\n  server_url: https://terdut.example.com\n  api_key: <your-api-key>", path)
+			return nil, fmt.Errorf("config file not found at %s\n\nCreate it with:\n  server_url: https://terdut.example.com\n  api_key: <your-api-key>\n  theme: gruvbox-dark  # optional", path)
 		}
 		return nil, fmt.Errorf("cannot read config file: %w", err)
 	}
@@ -59,5 +61,6 @@ func Load() (*Config, error) {
 		ServerURL:       raw.ServerURL,
 		APIKey:          raw.APIKey,
 		RefreshInterval: interval,
+		Theme:           raw.Theme,
 	}, nil
 }

internal/theme/builtin.go

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

internal/theme/load.go

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

internal/theme/load_test.go

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

internal/theme/theme.go

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

internal/tui/model.go

@@ -4,13 +4,13 @@ import (
 	"fmt"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/help"
 	"github.com/charmbracelet/bubbles/table"
 	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // ── Enums ──────────────────────────────────────────────────────────────────
@@ -40,6 +40,7 @@ const (
 	modeConfirm
 	modeUserPicker
 	modeUserCreate
+	modeUserNotifyEdit
 	modeAPIKeyMenu
 	modeAPIKeyCreate
 	modeAPIKeyReveal
@@ -53,6 +54,7 @@ const (
 	confirmResolveIncident
 	confirmDeleteScheduleEntry
 	confirmDeleteUser
+	confirmReassignSchedule
 )
 
 // pickerTarget says what the user picker is choosing a person for.
@@ -142,6 +144,18 @@ type scheduleDay struct {
 	entry *api.ScheduleEntry
 }
 
+// pendingAssign is an on-call assignment held back by the reassignment
+// confirmation, because some of its dates belong to somebody else.
+type pendingAssign struct {
+	userID   int64
+	username string
+	dates    []string
+	// taken are the dates currently held by other people, and holders the
+	// distinct names holding them — both only for wording the prompt.
+	taken   []string
+	holders []string
+}
+
 type Model struct {
 	client          *api.Client
 	serverURL       string
@@ -193,6 +207,7 @@ type Model struct {
 	confirmTarget      confirmTarget
 	pendingDeleteID    int64 // note event ID
 	pendingDeleteEntry *api.ScheduleEntry
+	pendingAssign      *pendingAssign
 
 	// Stats
 	topAlerts []api.TopAlert
@@ -224,16 +239,19 @@ type Model struct {
 	selectedUser      api.User
 	userFormInputs    [2]textinput.Model
 	userFormFocus     int
+	ntfyTopicInput    textinput.Model
 	apiKeyNameInput   textinput.Model
 	apiKeyRevokeInput textinput.Model
 	revealedAPIKey    api.APIKey
 
-	help help.Model
+	help   help.Model
-	keys keyMap
+	keys   keyMap
+	styles Styles
 }
 
-func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration) Model {
+func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration, th theme.Theme) Model {
-	ts := defaultTableStyles()
+	st := newStyles(th)
+	ts := st.Table()
 
 	incidentT := table.New(table.WithFocused(true))
 	incidentT.SetStyles(ts)
@@ -273,6 +291,10 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 	emailIn.Placeholder = "email"
 	emailIn.CharLimit = 128
 
+	topicIn := textinput.New()
+	topicIn.Placeholder = "ntfy topic — empty clears it"
+	topicIn.CharLimit = 128
+
 	keyNameIn := textinput.New()
 	keyNameIn.Placeholder = "key name (e.g. laptop)"
 	keyNameIn.CharLimit = 64
@@ -281,6 +303,15 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 	revokeIn.Placeholder = "integer key ID"
 	revokeIn.CharLimit = 20
 
+	for _, in := range []*textinput.Model{
+		&noteIn, &snoozeIn, &usernameIn, &emailIn, &topicIn, &keyNameIn, &revokeIn,
+	} {
+		*in = st.Input(*in)
+	}
+
+	helpModel := help.New()
+	helpModel.Styles = st.Help()
+
 	now := time.Now().UTC()
 	today := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
 	weekday := int(today.Weekday())
@@ -310,10 +341,12 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 		userPickerTable:   pickerT,
 		userManageTable:   manageT,
 		userFormInputs:    [2]textinput.Model{usernameIn, emailIn},
+		ntfyTopicInput:    topicIn,
 		apiKeyNameInput:   keyNameIn,
 		apiKeyRevokeInput: revokeIn,
-		help:              help.New(),
+		help:              helpModel,
 		keys:              keys,
+		styles:            st,
 	}
 }
 
@@ -323,37 +356,45 @@ func (m Model) Init() tea.Cmd {
 
 // ── Table rebuilders ───────────────────────────────────────────────────────
 
-func defaultTableStyles() table.Styles {
+// setRows replaces a table's rows and keeps its cursor in a state the rest of
-	s := table.DefaultStyles()
+// this package can rely on: valid whenever the table has any rows at all.
-	s.Header = s.Header.Bold(true)
+//
-	s.Selected = s.Selected.
+// bubbles does not do that on its own. SetRows only clamps the cursor *down*
-		Foreground(lipgloss.Color("0")).
+// (`if m.cursor > len(rows)-1`), so setting zero rows drives it to -1 and
-		Background(colorPrimary).
+// nothing ever brings it back — filling the table later leaves -1 in place,
-		Bold(true)
+// because -1 is not greater than len-1. Every table here is rebuilt from empty
-	return s
+// once at startup, when the first WindowSizeMsg arrives before any fetch has
+// returned, so without this every cursor is -1 until the user happens to press
+// up or down. Indexing a slice with that panics, which is exactly what
+// assigning an on-call week did.
+func setRows(t *table.Model, rows []table.Row) {
+	t.SetRows(rows)
+	if len(rows) > 0 && t.Cursor() < 0 {
+		t.SetCursor(0)
+	}
 }
 
 func (m *Model) rebuildIncidentTable() {
 	m.incidentTable.SetColumns(incidentColumns(m.width))
-	m.incidentTable.SetRows(incidentRows(m.incidents))
+	setRows(&m.incidentTable, incidentRows(m.incidents))
 	m.incidentTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildTable() {
 	m.alertTable.SetColumns(alertColumns(m.width))
-	m.alertTable.SetRows(alertRows(m.alerts))
+	setRows(&m.alertTable, alertRows(m.alerts))
 	m.alertTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildArchivedTable() {
 	m.archivedTable.SetColumns(incidentColumns(m.width))
-	m.archivedTable.SetRows(incidentRows(m.archivedIncidents))
+	setRows(&m.archivedTable, incidentRows(m.archivedIncidents))
 	m.archivedTable.SetHeight(tableHeight(m.height, 8))
 }
 
 func (m *Model) rebuildScheduleTable() {
 	m.scheduleTable.SetColumns(scheduleColumns(m.width))
-	m.scheduleTable.SetRows(scheduleRows(m.scheduleDays))
+	setRows(&m.scheduleTable, scheduleRows(m.scheduleDays))
 	m.scheduleTable.SetHeight(tableHeight(m.height, 10))
 }
 
@@ -363,7 +404,7 @@ func (m *Model) rebuildUserPickerTable() {
 	for i, u := range m.users {
 		rows[i] = table.Row{u.Username, u.Email}
 	}
-	m.userPickerTable.SetRows(rows)
+	setRows(&m.userPickerTable, rows)
 	m.userPickerTable.SetHeight(tableHeight(m.height, 10))
 }
 
@@ -371,9 +412,13 @@ func (m *Model) rebuildUserManageTable() {
 	m.userManageTable.SetColumns(userManageColumns(m.width))
 	rows := make([]table.Row, len(m.users))
 	for i, u := range m.users {
-		rows[i] = table.Row{u.Username, u.Email, u.CreatedAt.UTC().Format("2006-01-02")}
+		topic := u.Topic()
+		if topic == "" {
+			topic = "—"
+		}
+		rows[i] = table.Row{u.Username, u.Email, topic, u.CreatedAt.UTC().Format("2006-01-02")}
 	}
-	m.userManageTable.SetRows(rows)
+	setRows(&m.userManageTable, rows)
 	m.userManageTable.SetHeight(tableHeight(m.height, 10))
 }
 
@@ -390,16 +435,16 @@ func (m *Model) refreshDetailContent() {
 		return
 	}
 	if m.mode == modeAlertDetail {
-		m.detailViewport.SetContent(buildAlertDetailContent(m.selectedAlert, m.width))
+		m.detailViewport.SetContent(buildAlertDetailContent(m.styles, m.selectedAlert, m.width))
 		return
 	}
 	m.detailViewport.SetContent(
-		buildIncidentDetailContent(m.selectedIncident, m.timeline, m.noteCursor, m.width))
+		buildIncidentDetailContent(m.styles, m.selectedIncident, m.timeline, m.noteCursor, m.width))
 }
 
 func (m *Model) refreshStatsContent() {
 	m.statsViewport.SetContent(
-		buildStatsContent(m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
+		buildStatsContent(m.styles, m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
 }
 
 func (m Model) statsViewportHeight() int {
@@ -502,13 +547,16 @@ func userPickerColumns(width int) []table.Column {
 func userManageColumns(width int) []table.Column {
 	createdW := 12
 	usernameW := 25
-	emailW := width - usernameW - createdW - 8
+	topicW := 22
+	// 8 = bubbles' Padding(0, 1) on each of the four cells.
+	emailW := width - usernameW - topicW - createdW - 8
 	if emailW < 15 {
 		emailW = 15
 	}
 	return []table.Column{
 		{Title: "Username", Width: usernameW},
 		{Title: "Email", Width: emailW},
+		{Title: "Ntfy Topic", Width: topicW},
 		{Title: "Created", Width: createdW},
 	}
 }
@@ -852,9 +900,9 @@ func fetchScheduleCmd(client *api.Client, from, to time.Time) tea.Cmd {
 	}
 }
 
-func assignScheduleCmd(client *api.Client, userID int64, dates []string, from, to time.Time) tea.Cmd {
+func assignScheduleCmd(client *api.Client, userID int64, dates []string, replace bool, from, to time.Time) tea.Cmd {
 	return func() tea.Msg {
-		if _, err := client.AssignSchedule(userID, dates); err != nil {
+		if _, err := client.AssignSchedule(userID, dates, replace); err != nil {
 			return scheduleActionErrMsg{err}
 		}
 		entries, err := client.GetSchedule(from.Format("2006-01-02"), to.Format("2006-01-02"))
@@ -909,6 +957,22 @@ func createUserCmd(client *api.Client, username, email string) tea.Cmd {
 	}
 }
 
+// setUserNotifyTargetCmd points a user's pages at a topic, or clears it when
+// topic is empty. It re-lists afterwards so the table shows what the server
+// stored rather than what was typed.
+func setUserNotifyTargetCmd(client *api.Client, userID int64, topic string) tea.Cmd {
+	return func() tea.Msg {
+		if _, err := client.SetUserNotifyTarget(userID, topic); err != nil {
+			return userActionErrMsg{err}
+		}
+		users, err := client.ListUsers()
+		if err != nil {
+			return userActionErrMsg{err}
+		}
+		return usersFetchedMsg{users: users}
+	}
+}
+
 func deleteUserCmd(client *api.Client, userID int64) tea.Cmd {
 	return func() tea.Msg {
 		if err := client.DeleteUser(userID); err != nil {

internal/tui/model_test.go

@@ -4,8 +4,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/table"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 func TestNextFilter(t *testing.T) {
@@ -172,6 +173,32 @@ func TestAlertRows_ShowIncidentLink(t *testing.T) {
 	}
 }
 
+// A user with no ntfy topic gets no pages of their own — the row has to say so
+// rather than leaving a blank that reads as "not loaded yet".
+func TestUserManageRows_ShowMissingTopic(t *testing.T) {
+	topic := "terdut-niklas"
+	empty := ""
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	m.users = []api.User{
+		{ID: 1, Username: "niklas", NtfyTopic: &topic},
+		{ID: 2, Username: "alex"},
+		// The server stores a blank topic as NULL, but a stale client or an older
+		// server can still hand one back; it means the same thing.
+		{ID: 3, Username: "sam", NtfyTopic: &empty},
+	}
+	m.rebuildUserManageTable()
+
+	rows := m.userManageTable.Rows()
+	if rows[0][2] != "terdut-niklas" {
+		t.Errorf("expected the topic in the row, got %q", rows[0][2])
+	}
+	if rows[1][2] != "—" || rows[2][2] != "—" {
+		t.Errorf("expected an em dash for nil and empty topics, got %q and %q",
+			rows[1][2], rows[2][2])
+	}
+}
+
 // A previous release overflowed the terminal by two columns because the padding
 // budget was wrong. Columns plus bubbles' per-cell padding must land exactly on
 // the window width.
@@ -191,6 +218,17 @@ func TestColumnWidthsFitTheTerminal(t *testing.T) {
 					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)
+		}
 	}
 }
 
@@ -198,7 +236,9 @@ 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} {
-		for _, w := range append(widths(incidentColumns(width)), widths(alertColumns(width))...) {
+		cols := append(widths(incidentColumns(width)), widths(alertColumns(width))...)
+		cols = append(cols, widths(userManageColumns(width))...)
+		for _, w := range cols {
 			if w < 1 {
 				t.Errorf("width %d produced a non-positive column %d", width, w)
 			}
@@ -238,3 +278,95 @@ func TestBuildScheduleDays(t *testing.T) {
 		t.Error("expected unassigned days to have no entry")
 	}
 }
+
+// ── Schedule reassignment ─────────────────────────────────────────────────
+
+// scheduledWeek builds a model showing the week of 2026-07-27 with the given
+// entries already on the rota.
+func scheduledWeek(entries []api.ScheduleEntry) Model {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.width, m.height = 120, 40
+	m.connected = true
+	m.activeSection = sectionSchedule
+	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
+	m.scheduleEntries = entries
+	m.scheduleDays = buildScheduleDays(m.scheduleWindow, entries)
+	m.rebuildScheduleTable()
+	return m
+}
+
+func TestScheduleConflicts(t *testing.T) {
+	m := scheduledWeek([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+		{ID: 2, Date: "2026-07-28", UserID: 3, Username: "sam"},
+		{ID: 3, Date: "2026-07-29", UserID: 2, Username: "alex"},
+	})
+	week := []string{"2026-07-27", "2026-07-28", "2026-07-29", "2026-07-30"}
+
+	// Assigning alex: the days niklas and sam hold are conflicts, the day alex
+	// already holds is not, and the free day is not.
+	taken, holders := m.scheduleConflicts(week, 2)
+	if len(taken) != 2 || taken[0] != "2026-07-27" || taken[1] != "2026-07-28" {
+		t.Errorf("expected the two other people's days, got %v", taken)
+	}
+	if len(holders) != 2 || holders[0] != "niklas" || holders[1] != "sam" {
+		t.Errorf("expected both holders named once, got %v", holders)
+	}
+}
+
+// Reassigning somebody to a day they already hold takes nothing from anyone, so
+// it must not raise a prompt — but it still needs replace, because the server
+// rejects any date that already exists.
+func TestScheduleConflicts_OwnDayIsNotAConflict(t *testing.T) {
+	m := scheduledWeek([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 2, Username: "alex"},
+	})
+	dates := []string{"2026-07-27"}
+
+	if taken, _ := m.scheduleConflicts(dates, 2); len(taken) != 0 {
+		t.Errorf("expected no conflict on the user's own day, got %v", taken)
+	}
+	if !m.scheduleOccupied(dates) {
+		t.Error("expected the day to still count as occupied, so replace is sent")
+	}
+}
+
+func TestScheduleOccupied_FreeDays(t *testing.T) {
+	m := scheduledWeek(nil)
+	if m.scheduleOccupied([]string{"2026-07-27", "2026-07-28"}) {
+		t.Error("expected an empty rota to need no replace")
+	}
+}
+
+func TestDayCount(t *testing.T) {
+	tests := []struct {
+		taken, total int
+		want         string
+	}{
+		{1, 1, "This day is"},
+		{7, 7, "All 7 days are"},
+		{3, 7, "3 of 7 days are"},
+	}
+	for _, tt := range tests {
+		if got := dayCount(tt.taken, tt.total); got != tt.want {
+			t.Errorf("dayCount(%d, %d) = %q, want %q", tt.taken, tt.total, got, tt.want)
+		}
+	}
+}
+
+func TestJoinNames(t *testing.T) {
+	tests := []struct {
+		names []string
+		want  string
+	}{
+		{nil, "somebody else"},
+		{[]string{"niklas"}, "niklas"},
+		{[]string{"niklas", "alex"}, "niklas and alex"},
+		{[]string{"niklas", "alex", "sam"}, "niklas, alex and sam"},
+	}
+	for _, tt := range tests {
+		if got := joinNames(tt.names); got != tt.want {
+			t.Errorf("joinNames(%v) = %q, want %q", tt.names, got, tt.want)
+		}
+	}
+}

internal/tui/styles.go

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

internal/tui/styles_test.go

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

internal/tui/update.go

@@ -4,10 +4,10 @@ import (
 	"strconv"
 	"strings"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
 	"github.com/atotto/clipboard"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
@@ -258,6 +258,12 @@ func (m Model) routeKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m2, ourCmd := m.handleKey(msg)
 		return m2, tea.Batch(inputCmd, ourCmd)
 
+	case modeUserNotifyEdit:
+		var inputCmd tea.Cmd
+		m.ntfyTopicInput, inputCmd = m.ntfyTopicInput.Update(msg)
+		m2, ourCmd := m.handleKey(msg)
+		return m2, tea.Batch(inputCmd, ourCmd)
+
 	case modeAPIKeyCreate:
 		var inputCmd tea.Cmd
 		m.apiKeyNameInput, inputCmd = m.apiKeyNameInput.Update(msg)
@@ -328,6 +334,8 @@ func (m Model) handleKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		return m.handleUserPickerKey(msg)
 	case modeUserCreate:
 		return m.handleUserCreateKey(msg)
+	case modeUserNotifyEdit:
+		return m.handleUserNotifyEditKey(msg)
 	case modeAPIKeyMenu:
 		return m.handleAPIKeyMenuKey(msg)
 	case modeAPIKeyCreate:
@@ -460,7 +468,7 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				return m, nil
 			}
 			cursor := m.scheduleTable.Cursor()
-			if cursor >= len(m.scheduleDays) {
+			if cursor < 0 || cursor >= len(m.scheduleDays) {
 				return m, nil
 			}
 			day := m.scheduleDays[cursor]
@@ -476,7 +484,7 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 				return m, nil
 			}
 			cursor := m.userManageTable.Cursor()
-			if cursor >= len(m.users) {
+			if cursor < 0 || cursor >= len(m.users) {
 				return m, nil
 			}
 			m.selectedUser = m.users[cursor]
@@ -497,12 +505,29 @@ func (m Model) handleDashboardKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeUserCreate
 		return m, nil
 
+	case "t":
+		if m.activeSection != sectionUsers || !m.connected || len(m.users) == 0 {
+			return m, nil
+		}
+		cursor := m.userManageTable.Cursor()
+		if cursor < 0 || cursor >= len(m.users) {
+			return m, nil
+		}
+		m.selectedUser = m.users[cursor]
+		// 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())
+		m.ntfyTopicInput.CursorEnd()
+		m.ntfyTopicInput.Focus()
+		m.mode = modeUserNotifyEdit
+		return m, nil
+
 	case "k":
 		if m.activeSection != sectionUsers || !m.connected || len(m.users) == 0 {
 			return m, nil
 		}
 		cursor := m.userManageTable.Cursor()
-		if cursor >= len(m.users) {
+		if cursor < 0 || cursor >= len(m.users) {
 			return m, nil
 		}
 		m.selectedUser = m.users[cursor]
@@ -797,6 +822,7 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		}
 		m.pendingDeleteID = 0
 		m.pendingDeleteEntry = nil
+		m.pendingAssign = nil
 		return m, nil
 	}
 
@@ -826,6 +852,17 @@ func (m Model) handleConfirmKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		m.mode = modeDashboard
 		m.usersLoading = true
 		return m, deleteUserCmd(m.client, userID)
+
+	case confirmReassignSchedule:
+		p := m.pendingAssign
+		m.mode = modeDashboard
+		m.pendingAssign = nil
+		if p == nil {
+			return m, nil
+		}
+		m.scheduleLoading = true
+		return m, assignScheduleCmd(m.client, p.userID, p.dates, true,
+			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
 	return m, nil
@@ -856,7 +893,7 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		}
 
 		scheduleCursor := m.scheduleTable.Cursor()
-		if scheduleCursor >= len(m.scheduleDays) {
+		if scheduleCursor < 0 || scheduleCursor >= len(m.scheduleDays) {
 			m.mode = modeDashboard
 			return m, nil
 		}
@@ -874,15 +911,84 @@ func (m Model) handleUserPickerKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 		} else {
 			dates = []string{d.Format("2006-01-02")}
 		}
+
+		// The server refuses a date somebody else holds, so ask before taking
+		// it rather than letting the request come back 409. The answer is
+		// already on screen — no round trip is needed to work out who loses
+		// their shift.
+		taken, holders := m.scheduleConflicts(dates, user.ID)
+		if len(taken) > 0 {
+			m.pendingAssign = &pendingAssign{
+				userID:   user.ID,
+				username: user.Username,
+				dates:    dates,
+				taken:    taken,
+				holders:  holders,
+			}
+			m.confirmTarget = confirmReassignSchedule
+			m.mode = modeConfirm
+			return m, nil
+		}
+
 		m.mode = modeDashboard
 		m.scheduleLoading = true
-		return m, assignScheduleCmd(m.client, user.ID, dates,
+		// Nobody else loses anything, but the server rejects any date that
+		// already exists — including days this same person already holds, which
+		// is a no-op worth letting through silently.
+		return m, assignScheduleCmd(m.client, user.ID, dates, m.scheduleOccupied(dates),
 			m.scheduleWindow, m.scheduleWindow.AddDate(0, 0, 6))
 	}
 
 	return m, nil
 }
 
+// scheduleConflicts reports which of dates are already held by somebody other
+// than newUserID, and the distinct names holding them.
+//
+// Days the target already owns are not conflicts — reassigning somebody to
+// their own shift takes nothing from anyone, and prompting for it would be
+// noise. The server still needs replace for those, since it rejects any date
+// that exists.
+func (m Model) scheduleConflicts(dates []string, newUserID int64) (taken, holders []string) {
+	held := make(map[string]api.ScheduleEntry, len(m.scheduleDays))
+	for _, d := range m.scheduleDays {
+		if d.entry != nil {
+			held[d.entry.Date] = *d.entry
+		}
+	}
+	seen := make(map[string]bool)
+	for _, date := range dates {
+		e, ok := held[date]
+		if !ok || e.UserID == newUserID {
+			continue
+		}
+		taken = append(taken, date)
+		if !seen[e.Username] {
+			seen[e.Username] = true
+			holders = append(holders, e.Username)
+		}
+	}
+	return taken, holders
+}
+
+// scheduleOccupied reports whether any of dates already has an entry at all,
+// including one belonging to the incoming user. That is what decides whether
+// the request needs replace, as opposed to whether it needs confirming.
+func (m Model) scheduleOccupied(dates []string) bool {
+	held := make(map[string]bool, len(m.scheduleDays))
+	for _, d := range m.scheduleDays {
+		if d.entry != nil {
+			held[d.entry.Date] = true
+		}
+	}
+	for _, date := range dates {
+		if held[date] {
+			return true
+		}
+	}
+	return false
+}
+
 // ── User management ───────────────────────────────────────────────────────────
 
 func (m Model) handleUserCreateKey(msg tea.KeyMsg) (Model, tea.Cmd) {
@@ -916,6 +1022,28 @@ func (m Model) handleUserCreateKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	return m, nil
 }
 
+// handleUserNotifyEditKey edits one user's ntfy topic.
+//
+// Unlike the other forms here, an empty value is not a mistake to reject: it is
+// how a topic is cleared, which the server accepts and treats as NULL.
+func (m Model) handleUserNotifyEditKey(msg tea.KeyMsg) (Model, tea.Cmd) {
+	switch msg.String() {
+	case "esc":
+		m.ntfyTopicInput.Blur()
+		m.mode = modeDashboard
+		return m, nil
+
+	case "enter":
+		topic := strings.TrimSpace(m.ntfyTopicInput.Value())
+		m.ntfyTopicInput.Blur()
+		m.mode = modeDashboard
+		m.usersLoading = true
+		return m, setUserNotifyTargetCmd(m.client, m.selectedUser.ID, topic)
+	}
+
+	return m, nil
+}
+
 func (m Model) handleAPIKeyMenuKey(msg tea.KeyMsg) (Model, tea.Cmd) {
 	switch msg.String() {
 	case "esc":

internal/tui/update_test.go

@@ -5,8 +5,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // press sends one key and returns the resulting model and command. A nil command
@@ -31,7 +32,7 @@ func press(t *testing.T, m Model, key string) (Model, tea.Cmd) {
 
 // sized returns a connected model with a usable window, which most handlers need.
 func sized() Model {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.connected = true
 	return m
@@ -309,6 +310,192 @@ func TestDeleteNote_ConfirmsThenActs(t *testing.T) {
 	}
 }
 
+// ── Schedule reassignment ─────────────────────────────────────────────────
+
+// pickingOnCall opens the user picker for the schedule day at dayIndex, which
+// is where a reassignment actually starts.
+func pickingOnCall(entries []api.ScheduleEntry, dayIndex int, week bool) Model {
+	m := scheduledWeek(entries)
+	m.users = []api.User{
+		{ID: 1, Username: "niklas", Email: "n@example.com"},
+		{ID: 2, Username: "alex", Email: "a@example.com"},
+	}
+	m.rebuildUserPickerTable()
+	m.scheduleTable.SetCursor(dayIndex)
+	m.pickerAssignWeek = week
+	m.pickerTarget = pickerSchedule
+	m.mode = modeUserPicker
+	m.userPickerTable.SetCursor(1) // alex
+	return m
+}
+
+// The bug: a day somebody already holds could not be handed to anybody else.
+// The server refuses it, so the TUI has to ask first and then say so.
+func TestSchedule_ReassigningATakenDayAsksFirst(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+
+	m, cmd := press(t, m, "enter")
+
+	if m.mode != modeConfirm || m.confirmTarget != confirmReassignSchedule {
+		t.Fatalf("expected a reassignment confirmation, got mode %v target %v",
+			m.mode, m.confirmTarget)
+	}
+	if cmd != nil {
+		t.Error("expected nothing sent to the server before confirming")
+	}
+	mustContain(t, m.confirmPrompt(), "This day is assigned to niklas", "Reassign to alex?")
+}
+
+func TestSchedule_ReassignConfirmedSends(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+	m, _ = press(t, m, "enter")
+
+	m, cmd := press(t, m, "y")
+	if cmd == nil {
+		t.Fatal("expected the confirmed reassignment to be sent")
+	}
+	if m.mode != modeDashboard {
+		t.Errorf("expected a return to the dashboard, got mode %v", m.mode)
+	}
+	if m.pendingAssign != nil {
+		t.Error("expected the pending assignment cleared")
+	}
+}
+
+// Declining must leave the rota alone — that is the whole point of the guard.
+func TestSchedule_ReassignDeclinedSendsNothing(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-27", UserID: 1, Username: "niklas"},
+	}, 0, false)
+	m, _ = press(t, m, "enter")
+
+	m, cmd := press(t, m, "n")
+	if cmd != nil {
+		t.Error("expected nothing sent when the reassignment is declined")
+	}
+	if m.pendingAssign != nil {
+		t.Error("expected the pending assignment discarded")
+	}
+}
+
+// A free day is the path that always worked, and must not grow a prompt.
+func TestSchedule_AssigningAFreeDayDoesNotAsk(t *testing.T) {
+	m := pickingOnCall(nil, 0, false)
+
+	m, cmd := press(t, m, "enter")
+	if m.mode != modeDashboard {
+		t.Errorf("expected no prompt for a free day, got mode %v", m.mode)
+	}
+	if cmd == nil {
+		t.Error("expected the assignment to be sent straight away")
+	}
+}
+
+// The week case is the one that was worst: a single taken day rejected all
+// seven. One prompt now covers the lot, and it says how much is being taken.
+func TestSchedule_ReassigningAPartlyTakenWeekAsksOnce(t *testing.T) {
+	m := pickingOnCall([]api.ScheduleEntry{
+		{ID: 1, Date: "2026-07-28", UserID: 1, Username: "niklas"},
+		{ID: 2, Date: "2026-07-30", UserID: 3, Username: "sam"},
+	}, 0, true)
+
+	m, _ = press(t, m, "enter")
+	if m.confirmTarget != confirmReassignSchedule {
+		t.Fatalf("expected one confirmation for the week, got target %v", m.confirmTarget)
+	}
+	if got := len(m.pendingAssign.dates); got != 7 {
+		t.Errorf("expected all 7 days in the assignment, got %d", got)
+	}
+	mustContain(t, m.confirmPrompt(), "2 of 7 days are assigned to niklas and sam")
+}
+
+// ── Ntfy topic ────────────────────────────────────────────────────────────
+
+// onUsers puts the model in the Users section with a loaded table.
+func onUsers(users []api.User) Model {
+	m := sized()
+	m.activeSection = sectionUsers
+	m.users = users
+	m.rebuildUserManageTable()
+	return m
+}
+
+func userFixtures() []api.User {
+	topic := "terdut-niklas"
+	return []api.User{
+		{ID: 1, Username: "niklas", Email: "niklas@example.com", NtfyTopic: &topic},
+		{ID: 2, Username: "alex", Email: "alex@example.com"},
+	}
+}
+
+func TestNotifyTopic_EditPrefillsTheCurrentTopic(t *testing.T) {
+	m, _ := press(t, onUsers(userFixtures()), "t")
+
+	if m.mode != modeUserNotifyEdit {
+		t.Fatalf("expected the topic editor, got mode %v", m.mode)
+	}
+	if m.selectedUser.ID != 1 {
+		t.Errorf("expected the user under the cursor, got %d", m.selectedUser.ID)
+	}
+	// Prefilled, so editing a topic does not mean retyping it from scratch.
+	if got := m.ntfyTopicInput.Value(); got != "terdut-niklas" {
+		t.Errorf("expected the current topic prefilled, got %q", got)
+	}
+}
+
+// A user with no topic opens an empty field rather than the previous user's.
+func TestNotifyTopic_EditStartsEmptyWhenUnset(t *testing.T) {
+	m := onUsers(userFixtures())
+	m, _ = press(t, m, "t")
+	m, _ = press(t, m, "esc")
+	m.userManageTable.SetCursor(1)
+
+	m, _ = press(t, m, "t")
+	if got := m.ntfyTopicInput.Value(); got != "" {
+		t.Errorf("expected an empty field for a user with no topic, got %q", got)
+	}
+}
+
+func TestNotifyTopic_EscapeAbandonsWithoutSaving(t *testing.T) {
+	m, _ := press(t, onUsers(userFixtures()), "t")
+	m, cmd := press(t, m, "esc")
+
+	if cmd != nil {
+		t.Error("expected escape to save nothing")
+	}
+	if m.mode != modeDashboard {
+		t.Errorf("expected a return to the dashboard, got mode %v", m.mode)
+	}
+}
+
+// Clearing a topic is a real action, not a no-op: it is how a user is taken off
+// their own topic and back onto the shared fallback. Contrast the snooze prompt,
+// where an empty value means "I changed my mind".
+func TestNotifyTopic_EmptyInputStillSubmits(t *testing.T) {
+	m, _ := press(t, onUsers(userFixtures()), "t")
+	m.ntfyTopicInput.SetValue("")
+
+	m, cmd := press(t, m, "enter")
+	if cmd == nil {
+		t.Fatal("expected clearing the topic to call the server")
+	}
+	if m.mode != modeDashboard {
+		t.Errorf("expected a return to the dashboard, got mode %v", m.mode)
+	}
+}
+
+func TestNotifyTopic_IsUsersSectionOnly(t *testing.T) {
+	m := sized()
+	m.activeSection = sectionIncidents
+	if next, cmd := press(t, m, "t"); cmd != nil || next.mode != modeDashboard {
+		t.Error("expected t to do nothing outside the Users section")
+	}
+}
+
 func TestTab_CyclesEverySection(t *testing.T) {
 	m := sized()
 	if m.activeSection != sectionIncidents {
@@ -490,3 +677,50 @@ func containsAll(s string, subs ...string) bool {
 	}
 	return true
 }
+
+// The bug: assigning an on-call week panicked with "index out of range [-1]"
+// on a perfectly normal schedule, as long as nobody had moved the cursor first.
+//
+// The cause is not in this package. bubbles' SetRows clamps the cursor down but
+// never up, so the empty rebuild every table gets from the first WindowSizeMsg
+// -- which arrives before any fetch returns -- pins the cursor at -1, and
+// loading real rows afterwards leaves it there. Pressing up or down hid it,
+// which is why every existing test missed it: they all call SetCursor, and
+// SetCursor clamps.
+//
+// So this test must NOT touch the cursor. It reproduces the real order of
+// events: size first, data second, keys third.
+func TestSchedule_AssignWeekAfterStartupSizingDoesNotPanic(t *testing.T) {
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
+	m.connected = true
+	m.activeSection = sectionSchedule
+	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)
+
+	// 1. Terminal size arrives while every table is still empty.
+	next, _ := m.Update(tea.WindowSizeMsg{Width: 120, Height: 40})
+	m = next.(Model)
+
+	// 2. The schedule and the user list land.
+	next, _ = m.Update(scheduleFetchedMsg{entries: []api.ScheduleEntry{}})
+	m = next.(Model)
+	next, _ = m.Update(usersFetchedMsg{users: []api.User{
+		{ID: 1, Username: "niklas", Email: "n@example.com"},
+	}})
+	m = next.(Model)
+
+	if got := m.scheduleTable.Cursor(); got < 0 {
+		t.Fatalf("schedule cursor is %d after loading %d days; a populated table must have a usable cursor",
+			got, len(m.scheduleDays))
+	}
+
+	// 3. Assign the week to the first user, without ever moving a cursor.
+	m, _ = press(t, m, "W")
+	if m.mode != modeUserPicker {
+		t.Fatalf("W did not open the user picker, got mode %v", m.mode)
+	}
+	m, _ = press(t, m, "enter") // panicked here
+
+	if m.mode == modeUserPicker {
+		t.Fatal("enter left the picker open; the assignment never went anywhere")
+	}
+}

internal/tui/view.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
 	"github.com/charmbracelet/lipgloss"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // Order must match the section constants — renderTabs indexes this by ordinal.
@@ -26,8 +26,8 @@ func (m Model) View() string {
 }
 
 func (m Model) renderHeader() string {
-	title := styleHeader.Render("terdut-tui")
+	title := m.styles.Header.Render("terdut-tui")
-	right := styleMuted.Render(m.serverURL)
+	right := m.styles.Muted.Render(m.serverURL)
 	return spread(title, right, m.width)
 }
 
@@ -35,31 +35,31 @@ func (m Model) renderTabs() string {
 	var tabs []string
 	for i, name := range sectionNames {
 		if section(i) == m.activeSection {
-			tabs = append(tabs, styleTabActive.Render(name))
+			tabs = append(tabs, m.styles.TabActive.Render(name))
 		} else {
-			tabs = append(tabs, styleTabInactive.Render(name))
+			tabs = append(tabs, m.styles.TabInactive.Render(name))
 		}
 	}
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return strings.Join(tabs, "") + "\n" + sep
 }
 
 func (m Model) renderBody() string {
 	if m.err != nil {
-		return "\n" + styleError.Render(fmt.Sprintf("  Error: %v", m.err)) +
+		return "\n" + m.styles.Error.Render(fmt.Sprintf("  Error: %v", m.err)) +
-			"\n" + styleMuted.Render("  Press r to retry.")
+			"\n" + m.styles.Muted.Render("  Press r to retry.")
 	}
 	if !m.connected {
-		return "\n" + styleMuted.Render("  Connecting…")
+		return "\n" + m.styles.Muted.Render("  Connecting…")
 	}
 
 	switch m.mode {
 	case modeIncidentDetail, modeAlertDetail:
 		return m.renderDetail()
 	case modeNote:
-		return m.renderPrompt(styleHeader.Render("Note: ") + m.noteInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Note: ") + m.noteInput.View())
 	case modeSnooze:
-		return m.renderPrompt(styleHeader.Render("Snooze for: ") + m.snoozeInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Snooze for: ") + m.snoozeInput.View())
 	case modeConfirm:
 		switch m.confirmTarget {
 		case confirmDeleteNote, confirmResolveIncident:
@@ -73,6 +73,8 @@ func (m Model) renderBody() string {
 		return m.renderUserPicker()
 	case modeUserCreate:
 		return m.renderUserCreate()
+	case modeUserNotifyEdit:
+		return m.renderUserNotifyEdit()
 	case modeAPIKeyMenu:
 		return m.renderAPIKeyMenu()
 	case modeAPIKeyCreate:
@@ -88,9 +90,9 @@ func (m Model) renderBody() string {
 
 func (m Model) renderFooter() string {
 	withStatus := func(actions string) string {
-		rendered := styleFooter.Render(actions)
+		rendered := m.styles.Footer.Render(actions)
 		if m.statusMsg != "" {
-			return styleStatus.Render("  "+m.statusMsg) + "\n" + rendered
+			return m.styles.Status.Render("  "+m.statusMsg) + "\n" + rendered
 		}
 		return "\n" + rendered
 	}
@@ -106,13 +108,13 @@ func (m Model) renderFooter() string {
 		return withStatus("  i·open incident  esc·back")
 
 	case modeNote:
-		return "\n" + styleFooter.Render("  enter·submit  esc·cancel")
+		return "\n" + m.styles.Footer.Render("  enter·submit  esc·cancel")
 
 	case modeSnooze:
-		return "\n" + styleFooter.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
+		return "\n" + m.styles.Footer.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
 
 	case modeConfirm:
-		return "\n" + styleError.Render("  "+m.confirmPrompt())
+		return "\n" + m.styles.Error.Render("  "+m.confirmPrompt())
 
 	case modeUserPicker:
 		if m.pickerTarget == pickerIncidentAssignee {
@@ -127,6 +129,9 @@ func (m Model) renderFooter() string {
 	case modeUserCreate:
 		return withStatus("  tab·next field  enter·create  esc·cancel")
 
+	case modeUserNotifyEdit:
+		return withStatus("  enter·save  esc·cancel   (empty clears the topic)")
+
 	case modeAPIKeyMenu:
 		return withStatus("  n·new key  r·revoke by ID  esc·back")
 
@@ -152,9 +157,9 @@ func (m Model) renderFooter() string {
 		case sectionSchedule:
 			return withStatus("  +·assign day  W·assign week  d·del  ←/→·shift week  tab·section  r·refresh  q·quit")
 		case sectionUsers:
-			return withStatus("  n·new user  d·delete  k·API keys  r·refresh  tab·section  q·quit")
+			return withStatus("  n·new user  t·topic  d·delete  k·API keys  r·refresh  tab·section  q·quit")
 		}
-		return "\n" + styleFooter.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
+		return "\n" + m.styles.Footer.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
 	}
 }
 
@@ -173,10 +178,44 @@ func (m Model) confirmPrompt() string {
 		return "Delete schedule entry? [y/N]"
 	case confirmDeleteUser:
 		return fmt.Sprintf("Delete user %s (cascades all API keys)? [y/N]", m.selectedUser.Username)
+	case confirmReassignSchedule:
+		if p := m.pendingAssign; p != nil {
+			return fmt.Sprintf("%s assigned to %s. Reassign to %s? [y/N]",
+				dayCount(len(p.taken), len(p.dates)), joinNames(p.holders), p.username)
+		}
+		return "Reassign these days? [y/N]"
 	}
 	return "Are you sure? [y/N]"
 }
 
+// dayCount phrases how much of an assignment is being taken from somebody. A
+// single day says so plainly; a partial week says which part, because "3 of 7"
+// is the difference between taking a shift and taking somebody's whole week.
+func dayCount(taken, total int) string {
+	switch {
+	case total == 1:
+		return "This day is"
+	case taken == total:
+		return fmt.Sprintf("All %d days are", total)
+	default:
+		return fmt.Sprintf("%d of %d days are", taken, total)
+	}
+}
+
+// joinNames renders a list of people as prose.
+func joinNames(names []string) string {
+	switch len(names) {
+	case 0:
+		return "somebody else"
+	case 1:
+		return names[0]
+	case 2:
+		return names[0] + " and " + names[1]
+	default:
+		return strings.Join(names[:len(names)-1], ", ") + " and " + names[len(names)-1]
+	}
+}
+
 // ── Dashboard ──────────────────────────────────────────────────────────────
 
 func (m Model) renderDashboard() string {
@@ -202,9 +241,9 @@ func (m Model) renderIncidents() string {
 	var content string
 	switch {
 	case m.loading && len(m.incidents) == 0:
-		content = styleMuted.Render("  Loading incidents…")
+		content = m.styles.Muted.Render("  Loading incidents…")
 	case len(m.incidents) == 0:
-		content = styleMuted.Render(
+		content = m.styles.Muted.Render(
 			fmt.Sprintf("  No %s incidents.", filterLabel(m.incidentFilter)))
 	default:
 		content = m.incidentTable.View()
@@ -217,9 +256,9 @@ func (m Model) renderAlerts() string {
 	var content string
 	switch {
 	case m.loading && len(m.alerts) == 0:
-		content = styleMuted.Render("  Loading alerts…")
+		content = m.styles.Muted.Render("  Loading alerts…")
 	case len(m.alerts) == 0:
-		content = styleMuted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
+		content = m.styles.Muted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
 	default:
 		content = m.alertTable.View()
 	}
@@ -228,10 +267,10 @@ func (m Model) renderAlerts() string {
 
 func (m Model) renderArchived() string {
 	if m.archivedLoading {
-		return "\n" + styleMuted.Render("  Loading archived incidents…")
+		return "\n" + m.styles.Muted.Render("  Loading archived incidents…")
 	}
 	if len(m.archivedIncidents) == 0 {
-		return "\n" + styleMuted.Render("  No archived incidents.")
+		return "\n" + m.styles.Muted.Render("  No archived incidents.")
 	}
 	return "\n" + m.archivedTable.View()
 }
@@ -247,12 +286,12 @@ func (m Model) renderIncidentStatsBar() string {
 		mttr = humanSeconds(m.incidentStats.MTTRSeconds)
 	}
 	left := fmt.Sprintf("  %s  %s  %s   %s",
-		styleTriggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
+		m.styles.Triggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
-		styleAcknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
+		m.styles.Acknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
-		styleMuted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
+		m.styles.Muted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -265,10 +304,10 @@ func (m Model) renderAlertStatsBar() string {
 	}
 	left := fmt.Sprintf("  Total: %d  %s  %s",
 		total,
-		styleFiring.Render(fmt.Sprintf("Firing: %d", firing)),
+		m.styles.Firing.Render(fmt.Sprintf("Firing: %d", firing)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -285,20 +324,20 @@ func spread(left, right string, width int) string {
 
 func (m Model) renderSchedule() string {
 	if m.scheduleLoading {
-		return "\n" + styleMuted.Render("  Loading schedule…")
+		return "\n" + m.styles.Muted.Render("  Loading schedule…")
 	}
 
 	var onCallLine string
 	if m.currentOnCall != nil {
 		onCallLine = fmt.Sprintf("  On-call today: %s",
-			styleAlertName.Render(m.currentOnCall.Username))
+			m.styles.AlertName.Render(m.currentOnCall.Username))
 	} else {
-		onCallLine = styleMuted.Render("  On-call today: nobody scheduled")
+		onCallLine = m.styles.Muted.Render("  On-call today: nobody scheduled")
 	}
 
 	from := m.scheduleWindow
 	to := m.scheduleWindow.AddDate(0, 0, 6)
-	windowLabel := styleMuted.Render(fmt.Sprintf("  %s — %s",
+	windowLabel := m.styles.Muted.Render(fmt.Sprintf("  %s — %s",
 		from.Format("Jan 02"), to.Format("Jan 02, 2006")))
 
 	header := "\n" + spread(onCallLine, windowLabel, m.width) + "\n"
@@ -307,12 +346,12 @@ func (m Model) renderSchedule() string {
 
 func (m Model) renderUserPicker() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 
 	if m.pickerTarget == pickerIncidentAssignee {
 		header := fmt.Sprintf("\n  Assign %s to:\n\n",
-			styleBold.Render(m.selectedIncident.Title))
+			m.styles.Bold.Render(m.selectedIncident.Title))
 		return header + m.userPickerTable.View()
 	}
 
@@ -337,7 +376,7 @@ func (m Model) renderUserPicker() string {
 		}
 	}
 
-	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", styleBold.Render(scope))
+	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", m.styles.Bold.Render(scope))
 	return header + m.userPickerTable.View()
 }
 
@@ -345,14 +384,14 @@ func (m Model) renderUserPicker() string {
 
 func (m Model) renderDetail() string {
 	if m.detailLoading {
-		return "\n" + styleMuted.Render("  Loading…")
+		return "\n" + m.styles.Muted.Render("  Loading…")
 	}
 	return m.detailViewport.View()
 }
 
 // renderPrompt puts an input line under the detail pane.
 func (m Model) renderPrompt(prompt string) string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return m.detailViewport.View() + "\n" + sep + "\n" + prompt
 }
 
@@ -362,7 +401,7 @@ func (m Model) renderStats() string {
 	// Only announce loading before the first result: a background refresh must not
 	// blank the page out from under whoever is reading it.
 	if m.statsLoading && !m.statsLoaded {
-		return "\n" + styleMuted.Render("  Loading statistics…")
+		return "\n" + m.styles.Muted.Render("  Loading statistics…")
 	}
 	return m.statsViewport.View()
 }
@@ -379,16 +418,16 @@ func line(style lipgloss.Style, s string) string {
 
 // ── Content builders ───────────────────────────────────────────────────────
 
-func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
+func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
 	// Title + status header
-	title := styleAlertName.Render(inc.Title)
+	title := s.AlertName.Render(inc.Title)
-	status := incidentStatusStyle(inc.Status).Render(incidentStatusLabel(inc))
+	status := s.IncidentStatus(inc.Status).Render(incidentStatusLabel(inc))
 	if inc.Severity != "" {
-		status += "  " + severityStyle(inc.Severity).Render(strings.ToUpper(inc.Severity))
+		status += "  " + s.Severity(inc.Severity).Render(strings.ToUpper(inc.Severity))
 	}
 	gap := contentW - lipgloss.Width(title) - lipgloss.Width(status)
 	if gap < 1 {
@@ -401,9 +440,9 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 		inc.TriggeredAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, inc.TriggeredAt)))
 
 	if inc.AssignedTo != "" {
-		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", styleBold.Render(inc.AssignedTo)))
+		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", s.Bold.Render(inc.AssignedTo)))
 	} else {
-		b.WriteString(line(styleMuted, "  Assigned:   nobody"))
+		b.WriteString(line(s.Muted, "  Assigned:   nobody"))
 	}
 
 	if inc.AcknowledgedByID != nil {
@@ -411,14 +450,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 		if inc.AcknowledgedAt != nil {
 			ackAt = "  at " + inc.AcknowledgedAt.UTC().Format("2006-01-02 15:04 UTC")
 		}
-		b.WriteString(line(styleResolved,
+		b.WriteString(line(s.Resolved,
 			fmt.Sprintf("  Acked:      %s%s", inc.AcknowledgedBy, ackAt)))
 	} else {
-		b.WriteString(line(styleMuted, "  Acked:      not acknowledged"))
+		b.WriteString(line(s.Muted, "  Acked:      not acknowledged"))
 	}
 
 	if inc.IsSnoozed() {
-		b.WriteString(line(styleSnoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
+		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
 			inc.SnoozedUntil.UTC().Format("2006-01-02 15:04 UTC"), humanUntil(now, *inc.SnoozedUntil))))
 	}
 
@@ -431,14 +470,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			inc.ResolvedAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, *inc.ResolvedAt), source))
 	}
 	if inc.ArchivedAt != nil {
-		b.WriteString(line(styleMuted, "  Archived:   "+
+		b.WriteString(line(s.Muted, "  Archived:   "+
 			inc.ArchivedAt.UTC().Format("2006-01-02 15:04 UTC")))
 	}
 	b.WriteString("\n")
 
 	// Group labels — the correlation Alertmanager applied.
 	if len(inc.GroupLabels) > 0 {
-		b.WriteString(divider("Grouped By", width))
+		b.WriteString(divider(s, "Grouped By", width))
 		for _, k := range sortedKeys(inc.GroupLabels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(inc.GroupLabels[k], contentW-24)))
 		}
@@ -446,14 +485,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 	}
 
 	// Member alerts
-	b.WriteString(divider(fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
 	if len(inc.Alerts) == 0 {
-		b.WriteString(line(styleMuted, "  No alerts."))
+		b.WriteString(line(s.Muted, "  No alerts."))
 	} else {
 		for _, a := range inc.Alerts {
-			marker := styleFiring.Render("●")
+			marker := s.Firing.Render("●")
 			if a.Status != "firing" {
-				marker = styleResolved.Render("✓")
+				marker = s.Resolved.Render("✓")
 			}
 			instance := a.Labels["instance"]
 			if instance == "" {
@@ -461,29 +500,29 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			}
 			b.WriteString(fmt.Sprintf("  %s %-28s %-26s %s\n",
 				marker, truncate(a.Name, 28), truncate(instance, 26),
-				styleMuted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
+				s.Muted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
 		}
 	}
 	b.WriteString("\n")
 
 	// Timeline — the only history the server keeps.
 	notes := noteEvents(timeline)
-	b.WriteString(divider(fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
 	if len(timeline) == 0 {
-		b.WriteString(line(styleMuted, "  Nothing recorded yet."))
+		b.WriteString(line(s.Muted, "  Nothing recorded yet."))
 	} else {
 		noteIndex := 0
 		for _, e := range timeline {
-			when := styleMuted.Render(humanAgo(now, e.CreatedAt))
+			when := s.Muted.Render(humanAgo(now, e.CreatedAt))
 			if e.Type != api.EventNote {
 				b.WriteString(fmt.Sprintf("  %-52s %s\n", eventLabel(e), when))
 				continue
 			}
 			marker := "  "
-			author := styleBold.Render(e.Username)
+			author := s.Bold.Render(e.Username)
 			if noteIndex == cursor {
-				marker = styleSelected.Render("> ")
+				marker = s.Selected.Render("> ")
-				author = styleSelected.Render(e.Username)
+				author = s.Selected.Render(e.Username)
 			}
 			b.WriteString(fmt.Sprintf("%s%-50s %s\n", marker, author+" wrote", when))
 			b.WriteString("    " + e.Detail + "\n")
@@ -550,6 +589,15 @@ func eventLabel(e api.IncidentEvent) string {
 			return "  Resolved by " + who
 		}
 		return "  Resolved (all alerts stopped firing)"
+	case api.EventNotified:
+		// An empty username here is not "the server acted": it means the page
+		// went to the shared fallback topic, so it belongs to nobody.
+		return fmt.Sprintf("  Notified %s%s", notifiedTarget(who), notifyKind(e.Detail))
+	case api.EventNotifyFailed:
+		// The detail is "<kind>: <reason>", and the reason is the point — it is
+		// the only thing that says why nobody's phone rang.
+		return truncate(fmt.Sprintf("  Notification to %s failed · %s",
+			notifiedTarget(who), e.Detail), 52)
 	default:
 		label := "  " + e.Type
 		if e.Detail != "" {
@@ -559,21 +607,40 @@ func eventLabel(e api.IncidentEvent) string {
 	}
 }
 
-func buildAlertDetailContent(alert api.Alert, width int) string {
+// notifiedTarget names who a page reached. The server attaches no user when it
+// published to the shared fallback topic, and saying so is the difference
+// between "somebody was paged" and "the on-call rota was empty".
+func notifiedTarget(username string) string {
+	if username == "" {
+		return "the fallback topic"
+	}
+	return username
+}
+
+// notifyKind renders the notification kind the server puts in Detail. It is an
+// open set, so anything unrecognised is shown rather than dropped.
+func notifyKind(detail string) string {
+	if detail == "" {
+		return ""
+	}
+	return " (" + detail + ")"
+}
+
+func buildAlertDetailContent(s Styles, alert api.Alert, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
-	name := styleAlertName.Render(alert.Name)
+	name := s.AlertName.Render(alert.Name)
 	var statusStr string
 	if alert.Status == "firing" {
-		statusStr = styleFiring.Render("● FIRING")
+		statusStr = s.Firing.Render("● FIRING")
 	} else {
 		label := "✓ RESOLVED"
 		if alert.ResolutionSource != nil {
 			label += " · " + *alert.ResolutionSource
 		}
-		statusStr = styleResolved.Render(label)
+		statusStr = s.Resolved.Render(label)
 	}
 	gap := contentW - lipgloss.Width(name) - lipgloss.Width(statusStr)
 	if gap < 1 {
@@ -593,15 +660,15 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 	if alert.IncidentID != nil {
 		b.WriteString(fmt.Sprintf("  Incident:   %s   %s\n",
-			styleBold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
+			s.Bold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
-			styleMuted.Render("press i to open it")))
+			s.Muted.Render("press i to open it")))
 	} else {
-		b.WriteString(line(styleMuted, "  Incident:   none"))
+		b.WriteString(line(s.Muted, "  Incident:   none"))
 	}
 	b.WriteString("\n")
 
 	if len(alert.Labels) > 0 {
-		b.WriteString(divider("Labels", width))
+		b.WriteString(divider(s, "Labels", width))
 		for _, k := range sortedKeys(alert.Labels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Labels[k], contentW-24)))
 		}
@@ -609,7 +676,7 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	if len(alert.Annotations) > 0 {
-		b.WriteString(divider("Annotations", width))
+		b.WriteString(divider(s, "Annotations", width))
 		for _, k := range sortedKeys(alert.Annotations) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Annotations[k], contentW-24)))
 		}
@@ -617,14 +684,14 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	// Alerts carry no workflow state: it all lives on the incident.
-	b.WriteString(divider("", width))
+	b.WriteString(divider(s, "", width))
-	b.WriteString(line(styleMuted,
+	b.WriteString(line(s.Muted,
 		"  Alerts are read-only — acknowledge, assign, note and resolve on the incident."))
 
 	return b.String()
 }
 
-func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
+func buildStatsContent(s Styles, incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
 	barWidth := width/2 - 10
 	if barWidth < 8 {
 		barWidth = 8
@@ -637,41 +704,41 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 	b.WriteString("\n")
 
 	// Response times first: they are what a rota is actually judged on.
-	b.WriteString(divider("Incident Response", width))
+	b.WriteString(divider(s, "Incident Response", width))
 	if incidents == nil {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Incidents total",
-			styleBold.Render(fmt.Sprintf("%d", incidents.Total))))
+			s.Bold.Render(fmt.Sprintf("%d", incidents.Total))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Triggered",
-			styleTriggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
+			s.Triggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Acknowledged",
-			styleAcknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
+			s.Acknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Resolved",
-			styleResolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
+			s.Resolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to acknowledge",
-			styleBold.Render(humanSeconds(incidents.MTTASeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTASeconds))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to resolve",
-			styleBold.Render(humanSeconds(incidents.MTTRSeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTRSeconds))))
 		if incidents.MTTASeconds == nil || incidents.MTTRSeconds == nil {
-			b.WriteString(line(styleMuted, "  (— means nothing has been acknowledged or resolved yet)"))
+			b.WriteString(line(s.Muted, "  (— means nothing has been acknowledged or resolved yet)"))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Top Alerts", width))
+	b.WriteString(divider(s, "Top Alerts", width))
 	if len(top) == 0 {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		maxCount := top[0].Count
 		for i, a := range top {
-			bar := styleResolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
+			bar := s.Resolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2d. %-30s %s %d\n", i+1, truncate(a.Name, 30), bar, a.Count))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Hour (UTC)", width))
+	b.WriteString(divider(s, "Alerts by Hour (UTC)", width))
 	if len(byHour) > 0 {
 		maxCount := 0
 		for _, h := range byHour {
@@ -680,15 +747,15 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, h := range byHour {
-			bar := styleFiring.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
+			bar := s.Firing.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2dh  %-*s %d\n", h.Hour, barWidth, bar, h.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Day", width))
+	b.WriteString(divider(s, "Alerts by Day", width))
 	if len(byDay) > 0 {
 		maxCount := 0
 		for _, d := range byDay {
@@ -697,11 +764,11 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, d := range byDay {
-			bar := styleAccent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
+			bar := s.Accent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %-4s  %-*s %d\n", d.DayName[:3], barWidth, bar, d.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 
 	return b.String()
@@ -711,72 +778,82 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 
 func (m Model) renderUsers() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 	if len(m.users) == 0 {
-		return "\n" + styleMuted.Render("  No users found. Press n to create one.")
+		return "\n" + m.styles.Muted.Render("  No users found. Press n to create one.")
 	}
 	return "\n" + m.userManageTable.View()
 }
 
 func (m Model) renderUserCreate() string {
-	header := "\n  " + styleBold.Render("Create new user") + "\n\n"
+	header := "\n  " + m.styles.Bold.Render("Create new user") + "\n\n"
 	usernameLabel := "  Username:  "
 	emailLabel := "  Email:     "
 	if m.userFormFocus == 0 {
-		usernameLabel = styleSelected.Render("  Username:  ")
+		usernameLabel = m.styles.Selected.Render("  Username:  ")
 	} else {
-		emailLabel = styleSelected.Render("  Email:     ")
+		emailLabel = m.styles.Selected.Render("  Email:     ")
 	}
 	return header +
 		usernameLabel + m.userFormInputs[0].View() + "\n" +
 		emailLabel + m.userFormInputs[1].View() + "\n"
 }
 
+func (m Model) renderUserNotifyEdit() string {
+	header := fmt.Sprintf("\n  Push notifications for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
+	hint := line(m.styles.Muted,
+		"  The ntfy topic this user's pages go to. Leave it empty to clear it —\n"+
+			"  their incidents then page the server's shared fallback topic, which\n"+
+			"  carries no Acknowledge button.")
+	label := m.styles.Selected.Render("  Topic:  ")
+	return header + "\n" + hint + "\n" + label + m.ntfyTopicInput.View() + "\n"
+}
+
 func (m Model) renderAPIKeyMenu() string {
-	header := fmt.Sprintf("\n  API keys for %s\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  API keys for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
-	warning := line(styleMuted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
+	warning := line(m.styles.Muted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
 	options := "\n" +
-		styleAccent.Render("  n") + "  · create a new API key\n" +
+		m.styles.Accent.Render("  n") + "  · create a new API key\n" +
-		styleAccent.Render("  r") + "  · revoke a key by ID\n"
+		m.styles.Accent.Render("  r") + "  · revoke a key by ID\n"
 	return header + "\n" + warning + options
 }
 
 func (m Model) renderAPIKeyCreate() string {
-	header := fmt.Sprintf("\n  New API key for %s\n\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  New API key for %s\n\n", m.styles.Bold.Render(m.selectedUser.Username))
-	label := styleSelected.Render("  Key name:  ")
+	label := m.styles.Selected.Render("  Key name:  ")
 	return header + label + m.apiKeyNameInput.View() + "\n"
 }
 
 func (m Model) renderAPIKeyReveal() string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
-	warn := styleError.Render("  !! COPY NOW — this key will NEVER be shown again !!")
+	warn := m.styles.Error.Render("  !! COPY NOW — this key will NEVER be shown again !!")
-	nameLine := fmt.Sprintf("  Key name:  %s", styleBold.Render(m.revealedAPIKey.Name))
+	nameLine := fmt.Sprintf("  Key name:  %s", m.styles.Bold.Render(m.revealedAPIKey.Name))
 	idLine := fmt.Sprintf("  Key ID:    %s   %s",
-		styleBold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
+		m.styles.Bold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
-		styleMuted.Render("(save this — needed for future revocation)"))
+		m.styles.Muted.Render("(save this — needed for future revocation)"))
 
-	keyLine := styleResolved.Render("  " + m.revealedAPIKey.Key)
+	keyLine := m.styles.Resolved.Render("  " + m.revealedAPIKey.Key)
 
 	return "\n" + sep + "\n\n" +
 		warn + "\n\n" +
 		nameLine + "\n" +
 		idLine + "\n\n" +
-		styleMuted.Render("  Key value:") + "\n" +
+		m.styles.Muted.Render("  Key value:") + "\n" +
 		keyLine + "\n\n" +
 		sep + "\n"
 }
 
 func (m Model) renderAPIKeyRevokeByID() string {
-	header := fmt.Sprintf("\n  Revoke API key for %s\n", styleBold.Render(m.selectedUser.Username))
+	header := fmt.Sprintf("\n  Revoke API key for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
-	hint := line(styleMuted, "  Enter the integer key ID (shown when the key was created).")
+	hint := line(m.styles.Muted, "  Enter the integer key ID (shown when the key was created).")
-	label := styleSelected.Render("  Key ID:  ")
+	label := m.styles.Selected.Render("  Key ID:  ")
 	return header + "\n" + hint + "\n" + label + m.apiKeyRevokeInput.View() + "\n"
 }
 
 // ── Helpers ────────────────────────────────────────────────────────────────
 
-func divider(title string, width int) string {
+func divider(s Styles, title string, width int) string {
 	prefix := "── "
 	if title != "" {
 		prefix += title + " "
@@ -785,7 +862,7 @@ func divider(title string, width int) string {
 	if remaining > 0 {
 		prefix += strings.Repeat("─", remaining)
 	}
-	return styleMuted.Render(prefix) + "\n"
+	return s.Muted.Render(prefix) + "\n"
 }
 
 func sortedKeys(m map[string]string) []string {
@@ -808,12 +885,19 @@ func renderBarWidth(count, maxCount, maxWidth int) int {
 	return w
 }
 
+// truncate shortens s to max terminal cells, marking the cut with an ellipsis.
+//
+// Counted in runes rather than bytes: these strings are laid out against
+// fixed-width columns, and a byte cut through a multi-byte rune would both
+// mis-measure the column and emit a broken character. Server-supplied text —
+// labels, annotations, delivery errors — is not guaranteed to be ASCII.
 func truncate(s string, max int) string {
 	if max < 1 {
 		return ""
 	}
-	if len(s) <= max {
+	r := []rune(s)
+	if len(r) <= max {
 		return s
 	}
-	return s[:max-1] + "…"
+	return string(r[:max-1]) + "…"
 }

internal/tui/view_test.go

@@ -6,8 +6,9 @@ import (
 	"testing"
 	"time"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
 )
 
 // ansi matches the escape sequences lipgloss emits when it decides the output
@@ -16,6 +17,10 @@ var ansi = regexp.MustCompile(`\x1b\[[0-9;]*m`)
 
 func plain(s string) string { return ansi.ReplaceAllString(s, "") }
 
+// testStyles is the default theme, so assertions here run against what a user
+// with no 'theme:' key actually sees.
+func testStyles() Styles { return newStyles(theme.GruvboxDark) }
+
 func mustContain(t *testing.T, got string, wants ...string) {
 	t.Helper()
 	got = plain(got)
@@ -52,7 +57,7 @@ func TestIncidentDetail_RendersTheWholeStory(t *testing.T) {
 		{Type: api.EventNote, Username: "admin", Detail: "draining node-2", CreatedAt: now},
 	}
 
-	out := buildIncidentDetailContent(inc, timeline, -1, 110)
+	out := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 110)
 	mustContain(t, out,
 		"DiskFull (namespace=prod)", "ACKNOWLEDGED", "CRITICAL",
 		"Assigned:", "admin",
@@ -72,7 +77,7 @@ func TestIncidentDetail_ShowsSnooze(t *testing.T) {
 	}
 	// The exact remaining time is humanUntil's business, not this test's — a few
 	// microseconds of elapsed clock turn "in 2h" into "in 1h 59m".
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"TRIGGERED (snoozed)", "Snoozed:", "until", "in 1h")
 }
 
@@ -83,7 +88,7 @@ func TestIncidentDetail_HidesExpiredSnooze(t *testing.T) {
 		Title: "Noisy", Status: api.StatusTriggered,
 		TriggeredAt: time.Now(), SnoozedUntil: &past,
 	}
-	if strings.Contains(plain(buildIncidentDetailContent(inc, nil, -1, 110)), "Snoozed:") {
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, -1, 110)), "Snoozed:") {
 		t.Error("an expired snooze should not be rendered")
 	}
 }
@@ -95,18 +100,18 @@ func TestIncidentDetail_ShowsResolutionSource(t *testing.T) {
 		Title: "Done", Status: api.StatusResolved, TriggeredAt: now.Add(-time.Hour),
 		ResolvedAt: &now, ResolutionSource: &source,
 	}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"RESOLVED", "Resolved:", "manual")
 }
 
 func TestIncidentDetail_UnassignedAndUnacknowledged(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "nobody", "not acknowledged")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "nobody", "not acknowledged")
 }
 
 func TestIncidentDetail_EmptyTimeline(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "Nothing recorded yet")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "Nothing recorded yet")
 }
 
 func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
@@ -117,7 +122,7 @@ func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
 	}
 	inc := api.Incident{Title: "X", Status: api.StatusTriggered, TriggeredAt: now}
 
-	out := plain(buildIncidentDetailContent(inc, timeline, 1, 110))
+	out := plain(buildIncidentDetailContent(testStyles(), inc, timeline, 1, 110))
 	for _, line := range strings.Split(out, "\n") {
 		if strings.Contains(line, "alice") && !strings.HasPrefix(line, "> ") {
 			t.Errorf("expected the selected note marked, got %q", line)
@@ -175,6 +180,18 @@ func TestEventLabel_KnownTypes(t *testing.T) {
 		{api.IncidentEvent{Type: api.EventResolved, Username: "bo"}, "Resolved by bo"},
 		// No user means the server closed it via the alert cascade.
 		{api.IncidentEvent{Type: api.EventResolved}, "all alerts stopped firing"},
+		{api.IncidentEvent{Type: api.EventNotified, Username: "bo", Detail: "triggered"},
+			"Notified bo (triggered)"},
+		{api.IncidentEvent{Type: api.EventNotified, Username: "bo", Detail: "reminder"},
+			"Notified bo (reminder)"},
+		// On a notification, no user means the shared fallback topic — not that
+		// the server acted on its own.
+		{api.IncidentEvent{Type: api.EventNotified, Detail: "triggered"},
+			"Notified the fallback topic (triggered)"},
+		{api.IncidentEvent{Type: api.EventNotifyFailed, Username: "bo", Detail: "triggered: ntfy returned 502"},
+			"Notification to bo failed"},
+		{api.IncidentEvent{Type: api.EventNotifyFailed, Detail: "triggered: no route to host"},
+			"Notification to the fallback topic failed"},
 	}
 	for _, tt := range tests {
 		t.Run(tt.event.Type, func(t *testing.T) {
@@ -183,6 +200,32 @@ func TestEventLabel_KnownTypes(t *testing.T) {
 	}
 }
 
+// The timeline is where a page that never landed becomes visible, so both
+// outcomes have to survive into the rendered pane.
+func TestIncidentDetail_RendersNotifications(t *testing.T) {
+	now := time.Now()
+	inc := api.Incident{ID: 1, Title: "DiskFull", Status: api.StatusTriggered, TriggeredAt: now}
+	timeline := []api.IncidentEvent{
+		{Type: api.EventTriggered, CreatedAt: now},
+		{Type: api.EventNotified, Username: "niklas", Detail: "triggered", CreatedAt: now},
+		{Type: api.EventNotifyFailed, Username: "niklas",
+			Detail: "reminder: ntfy returned 502", CreatedAt: now},
+	}
+
+	got := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 120)
+	mustContain(t, got, "Notified niklas (triggered)", "Notification to niklas failed")
+}
+
+func TestUserNotifyEdit_SaysWhatAnEmptyValueDoes(t *testing.T) {
+	m := sized()
+	m.mode = modeUserNotifyEdit
+	m.selectedUser = api.User{ID: 1, Username: "niklas"}
+
+	mustContain(t, m.View(), "niklas", "empty to clear it", "fallback topic")
+	// The footer has to repeat it: that is where the reader looks for what a key does.
+	mustContain(t, m.renderFooter(), "empty clears the topic")
+}
+
 func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 	now := time.Now()
 	id := int64(7)
@@ -192,7 +235,7 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 		Labels:      map[string]string{"instance": "node-1", "severity": "critical"},
 		Annotations: map[string]string{"summary": "disk 90%"},
 	}
-	mustContain(t, buildAlertDetailContent(alert, 110),
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110),
 		"DiskFull", "FIRING", "Incident:", "#7", "press i to open it",
 		"instance", "node-1", "summary", "disk 90%",
 		"Alerts are read-only")
@@ -200,21 +243,21 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 
 func TestAlertDetail_NoIncident(t *testing.T) {
 	alert := api.Alert{ID: 3, Name: "Orphan", Status: "resolved", ReceivedAt: time.Now()}
-	mustContain(t, buildAlertDetailContent(alert, 110), "Incident:", "none")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "Incident:", "none")
 }
 
 func TestAlertDetail_ShowsResolutionSource(t *testing.T) {
 	source := "expiry"
 	alert := api.Alert{Name: "Gone", Status: "resolved", ReceivedAt: time.Now(),
 		ResolutionSource: &source}
-	mustContain(t, buildAlertDetailContent(alert, 110), "RESOLVED", "expiry")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "RESOLVED", "expiry")
 }
 
 // Null MTTA means nothing has been acknowledged, which is a different claim
 // from an instant response.
 func TestStats_RendersDashForMissingAverages(t *testing.T) {
 	stats := &api.IncidentStats{Total: 2, Triggered: 2}
-	out := buildStatsContent(stats, nil, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, nil, nil, nil, 110)
 	mustContain(t, out, "Incident Response", "Mean time to acknowledge", "—",
 		"nothing has been acknowledged or resolved yet")
 }
@@ -222,12 +265,12 @@ func TestStats_RendersDashForMissingAverages(t *testing.T) {
 func TestStats_RendersAverages(t *testing.T) {
 	mtta, mttr := 150.0, 3600.0
 	stats := &api.IncidentStats{Total: 3, Resolved: 1, MTTASeconds: &mtta, MTTRSeconds: &mttr}
-	out := buildStatsContent(stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
 	mustContain(t, out, "2m", "1h", "Top Alerts", "DiskFull")
 }
 
 func TestStats_HandlesNoIncidentData(t *testing.T) {
-	mustContain(t, buildStatsContent(nil, nil, nil, nil, 110), "Incident Response", "No data")
+	mustContain(t, buildStatsContent(testStyles(), nil, nil, nil, nil, 110), "Incident Response", "No data")
 }
 
 func TestView_TabsAndDashboardRender(t *testing.T) {
@@ -258,7 +301,7 @@ func TestView_EmptyStates(t *testing.T) {
 // The stats page renders inside the normal section chrome now, so it has to
 // survive the real path: a window size message sizes the viewport and fills it.
 func TestView_StatsSectionRendersInPlace(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.connected = true
 	m.incidentStats = &api.IncidentStats{Total: 3, Triggered: 1}
 	m.topAlerts = []api.TopAlert{{Name: "DiskFull", Count: 4}}
@@ -297,7 +340,7 @@ func TestFooter_IncidentDetailOffersResolveOnlyWhileOpen(t *testing.T) {
 }
 
 func TestView_ZeroWidthRendersNothing(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	if m.View() != "" {
 		t.Error("expected no output before the first window size message")
 	}

internal/updater/updater.go

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

main.go

@@ -5,11 +5,12 @@ import (
 	"fmt"
 	"os"
 
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/config"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"git.ryuvia.com/niklas/terdut-tui/internal/tui"
+	"git.ryuvia.com/niklas/terdut-tui/internal/updater"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/yeniklas/terdut-tui/internal/api"
-	"github.com/yeniklas/terdut-tui/internal/config"
-	"github.com/yeniklas/terdut-tui/internal/tui"
-	"github.com/yeniklas/terdut-tui/internal/updater"
 )
 
 var version = "dev"
@@ -38,8 +39,14 @@ func main() {
 		os.Exit(1)
 	}
 
+	th, err := theme.Load(cfg.Theme)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+
 	client := api.NewClient(cfg.ServerURL, cfg.APIKey)
-	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval)
+	model := tui.NewModel(client, cfg.ServerURL, cfg.RefreshInterval, th)
 
 	p := tea.NewProgram(model, tea.WithAltScreen())
 	if _, err := p.Run(); err != nil {