feat: add Listening Mode overlay with voice picker, speed, sleep timer, and chapter list

Adds a full-screen listening mode accessible via the headphones button in the
mini-player bar. Moves voice selector, speed, auto-next, and sleep timer out of
the reader settings panel into the new overlay. Voices are stored in AudioStore
so ListeningMode can read them without prop drilling.

.gitea/workflows/release.yaml

@@ -155,6 +155,12 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Compute release version (strip leading v)
+        id: ver
+        run: |
+          V="${{ gitea.ref_name }}"
+          echo "version=${V#v}" >> "$GITHUB_OUTPUT"
+
       - name: Build with source maps
         run: npm run build
 
@@ -170,15 +176,31 @@ jobs:
           SENTRY_URL: https://errors.libnovel.cc/
           SENTRY_AUTH_TOKEN: ${{ secrets.GLITCHTIP_AUTH_TOKEN }}
           SENTRY_ORG: libnovel
-          SENTRY_PROJECT: libnovel-ui
+          SENTRY_PROJECT: ui
 
-      - name: Upload source maps to GlitchTip
-        run: glitchtip-cli sourcemaps upload ./build --release ${{ gitea.ref_name }}
+      - name: Create GlitchTip release
+        run: glitchtip-cli releases new ${{ steps.ver.outputs.version }}
         env:
           SENTRY_URL: https://errors.libnovel.cc/
           SENTRY_AUTH_TOKEN: ${{ secrets.GLITCHTIP_AUTH_TOKEN }}
           SENTRY_ORG: libnovel
-          SENTRY_PROJECT: libnovel-ui
+          SENTRY_PROJECT: ui
+
+      - name: Upload source maps to GlitchTip
+        run: glitchtip-cli sourcemaps upload ./build --release ${{ steps.ver.outputs.version }}
+        env:
+          SENTRY_URL: https://errors.libnovel.cc/
+          SENTRY_AUTH_TOKEN: ${{ secrets.GLITCHTIP_AUTH_TOKEN }}
+          SENTRY_ORG: libnovel
+          SENTRY_PROJECT: ui
+
+      - name: Finalize GlitchTip release
+        run: glitchtip-cli releases finalize ${{ steps.ver.outputs.version }}
+        env:
+          SENTRY_URL: https://errors.libnovel.cc/
+          SENTRY_AUTH_TOKEN: ${{ secrets.GLITCHTIP_AUTH_TOKEN }}
+          SENTRY_ORG: libnovel
+          SENTRY_PROJECT: ui
 
   # ── docker: ui ────────────────────────────────────────────────────────────────
   docker-ui:

AGENTS.md

@@ -0,0 +1,150 @@
+# LibNovel v2 — Agent Context
+
+This file is the root-level knowledge base for LLM coding agents (OpenCode, Claude, Cursor, Copilot, etc.).
+Sub-directories have their own `AGENTS.md` with deeper context (e.g. `ios/AGENTS.md`).
+
+---
+
+## Stack
+
+| Layer | Technology |
+|---|---|
+| UI | SvelteKit 2 + Svelte 5, TypeScript, TailwindCSS |
+| Backend / Runner | Go (single repo, two binaries: `backend`, `runner`) |
+| iOS app | SwiftUI, iOS 17+, Swift 5.9+ |
+| Database | PocketBase (SQLite) + MinIO (object storage) |
+| Search | Meilisearch |
+| Queue | Asynq over Redis (local) / Valkey (prod) |
+| Scraping | Novelfire scraper in `backend/novelfire/` |
+
+---
+
+## Repository Layout
+
+```
+.
+├── .gitea/workflows/     # CI/CD — Gitea Actions (NOT .github/)
+├── .opencode/            # OpenCode agent config (memory, skills)
+├── backend/              # Go backend + runner (single module)
+├── caddy/                # Caddy reverse proxy Dockerfile
+├── homelab/              # Homelab docker-compose + observability stack
+├── ios/                  # SwiftUI iOS app (see ios/AGENTS.md)
+├── scripts/              # Utility scripts
+├── ui/                   # SvelteKit UI
+├── docker-compose.yml    # Prod compose (all services)
+├── AGENTS.md             # This file
+└── opencode.json         # OpenCode config
+```
+
+---
+
+## CI/CD — Gitea Actions
+
+- Workflows live in `.gitea/workflows/` — **not** `.github/workflows/`
+- Self-hosted Gitea instance; use `gitea.ref_name` / `gitea.sha` (not `github.*`)
+- Two workflows:
+  - `ci.yaml` — runs on every push to `main` (test + type-check)
+  - `release.yaml` — runs on `v*` tags (build Docker images, upload source maps, create Gitea release)
+- Secrets: `DOCKER_USER`, `DOCKER_TOKEN`, `GITEA_TOKEN`, `GLITCHTIP_AUTH_TOKEN`
+
+### Releasing a new version
+
+```bash
+git tag v2.5.X -m "Short title\n\nOptional longer body"
+git push origin v2.5.X
+```
+
+CI will build all Docker images, upload source maps to GlitchTip, and create a Gitea release automatically.
+
+---
+
+## GlitchTip Error Tracking
+
+- Instance: `https://errors.libnovel.cc/`
+- Org: `libnovel`
+- Projects: `ui` (id/1), `backend` (id/2), `runner` (id/3)
+- Tool: `glitchtip-cli` v0.1.0
+
+### Per-service DSNs (stored in Doppler)
+
+| Service | Doppler key | GlitchTip project |
+|---|---|---|
+| UI (SvelteKit) | `PUBLIC_GLITCHTIP_DSN` | ui (1) |
+| Backend (Go) | `GLITCHTIP_DSN_BACKEND` | backend (2) |
+| Runner (Go) | `GLITCHTIP_DSN_RUNNER` | runner (3) |
+
+### Source map upload flow (release.yaml)
+
+The correct order is **critical** — uploading before `releases new` results in 0 files shown in GlitchTip UI:
+
+```
+glitchtip-cli sourcemaps inject ./build          # inject debug IDs
+glitchtip-cli releases new <version>             # MUST come before upload
+glitchtip-cli sourcemaps upload ./build \
+  --release <version>                            # associate files with release
+glitchtip-cli releases finalize <version>        # mark release complete
+```
+
+---
+
+## Infrastructure
+
+| Environment | Host | Path | Doppler config |
+|---|---|---|---|
+| Prod | `165.22.70.138` | `/opt/libnovel/` | `prd` |
+| Homelab runner | `192.168.0.109` | `/opt/libnovel-runner/` | `prd_homelab` |
+
+### Docker Compose — always use Doppler
+
+```bash
+# Prod
+doppler run --project libnovel --config prd -- docker compose <cmd>
+
+# Homelab full-stack (runs from .bak file on server)
+doppler run --project libnovel --config prd_homelab -- docker compose -f homelab/docker-compose.yml.bak <cmd>
+
+# Homelab runner only
+doppler run --project libnovel --config prd_homelab -- docker compose -f homelab/runner/docker-compose.yml <cmd>
+```
+
+- Prod runner has `profiles: [runner]` — `docker compose up -d` will NOT accidentally start it
+- When deploying, always sync `docker-compose.yml` to the server before running `up -d`
+
+---
+
+## Observability
+
+| Tool | Purpose |
+|---|---|
+| GlitchTip | Error tracking (UI + backend + runner) |
+| Grafana Faro | RUM / Web Vitals (collector at `faro.libnovel.cc/collect`) |
+| OpenTelemetry | Distributed tracing (OTLP → collector → Tempo) |
+| Grafana | Dashboards at `/admin/grafana` |
+
+Grafana dashboards: `homelab/otel/grafana/provisioning/dashboards/`
+
+---
+
+## Go Backend
+
+- Primary files: `orchestrator.go`, `server/handlers_*.go`, `novelfire/scraper.go`, `storage/hybrid.go`, `storage/pocketbase.go`
+- Store interface: `store.go` — never touch MinIO/PocketBase clients directly outside `storage/`
+- Two binaries built from the same module: `backend` (HTTP API) and `runner` (Asynq worker)
+
+---
+
+## SvelteKit UI
+
+- Source: `ui/src/`
+- i18n: Paraglide — translation files in `ui/messages/*.json` (5 locales)
+- Auth debug bypass: `GET /api/auth/debug-login?token=<DEBUG_LOGIN_TOKEN>&username=<username>&next=<path>`
+
+---
+
+## iOS App
+
+Full context in `ios/AGENTS.md`. Quick notes:
+- SwiftUI, iOS 17+, `@Observable` for new types
+- Download key separator: `::` (not `-`)
+- Voice fallback: book override → global default → `"af_bella"`
+- Offline pattern: `NetworkMonitor` env object + `OfflineBanner` + `ErrorAlertModifier`

backend/cmd/backend/main.go

@@ -195,6 +195,7 @@ func run() error {
 			ImageGen:         imageGenClient,
 			TextGen:          textGenClient,
 			BookWriter:       store,
+			AIJobStore:       store,
 			Log:              log,
 		},
 	)

backend/internal/backend/handlers_aijobs.go

@@ -0,0 +1,233 @@
+package backend
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/libnovel/backend/internal/cfai"
+	"github.com/libnovel/backend/internal/domain"
+)
+
+// ── Cancel registry ────────────────────────────────────────────────────────────
+// cancelJobsMu guards cancelJobs.
+var cancelJobsMu sync.Mutex
+
+// cancelJobs maps a job ID to its CancelFunc. Entries are added when a batch
+// job starts and removed when it finishes or is cancelled.
+var cancelJobs = map[string]context.CancelFunc{}
+
+func registerCancelJob(id string, cancel context.CancelFunc) {
+	cancelJobsMu.Lock()
+	cancelJobs[id] = cancel
+	cancelJobsMu.Unlock()
+}
+
+func deregisterCancelJob(id string) {
+	cancelJobsMu.Lock()
+	delete(cancelJobs, id)
+	cancelJobsMu.Unlock()
+}
+
+// ── AI Job list / get / cancel ─────────────────────────────────────────────────
+
+// handleAdminListAIJobs handles GET /api/admin/ai-jobs.
+// Returns all ai_job records sorted by started descending.
+func (s *Server) handleAdminListAIJobs(w http.ResponseWriter, r *http.Request) {
+	if s.deps.AIJobStore == nil {
+		jsonError(w, http.StatusServiceUnavailable, "ai job store not configured")
+		return
+	}
+	jobs, err := s.deps.AIJobStore.ListAIJobs(r.Context())
+	if err != nil {
+		s.deps.Log.Error("admin: list ai jobs failed", "err", err)
+		jsonError(w, http.StatusInternalServerError, "list ai jobs: "+err.Error())
+		return
+	}
+	writeJSON(w, 0, map[string]any{"jobs": jobs})
+}
+
+// handleAdminGetAIJob handles GET /api/admin/ai-jobs/{id}.
+func (s *Server) handleAdminGetAIJob(w http.ResponseWriter, r *http.Request) {
+	if s.deps.AIJobStore == nil {
+		jsonError(w, http.StatusServiceUnavailable, "ai job store not configured")
+		return
+	}
+	id := r.PathValue("id")
+	job, ok, err := s.deps.AIJobStore.GetAIJob(r.Context(), id)
+	if err != nil {
+		jsonError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if !ok {
+		jsonError(w, http.StatusNotFound, fmt.Sprintf("job %q not found", id))
+		return
+	}
+	writeJSON(w, 0, job)
+}
+
+// handleAdminCancelAIJob handles POST /api/admin/ai-jobs/{id}/cancel.
+// Marks the job as cancelled in PB and cancels the in-memory context if present.
+func (s *Server) handleAdminCancelAIJob(w http.ResponseWriter, r *http.Request) {
+	if s.deps.AIJobStore == nil {
+		jsonError(w, http.StatusServiceUnavailable, "ai job store not configured")
+		return
+	}
+	id := r.PathValue("id")
+
+	// Cancel in-memory context if the job is still running in this process.
+	cancelJobsMu.Lock()
+	if cancel, ok := cancelJobs[id]; ok {
+		cancel()
+	}
+	cancelJobsMu.Unlock()
+
+	// Mark as cancelled in PB.
+	if err := s.deps.AIJobStore.UpdateAIJob(r.Context(), id, map[string]any{
+		"status":   string(domain.TaskStatusCancelled),
+		"finished": time.Now().Format(time.RFC3339),
+	}); err != nil {
+		s.deps.Log.Error("admin: cancel ai job failed", "id", id, "err", err)
+		jsonError(w, http.StatusInternalServerError, "cancel ai job: "+err.Error())
+		return
+	}
+
+	s.deps.Log.Info("admin: ai job cancelled", "id", id)
+	writeJSON(w, 0, map[string]any{"cancelled": true})
+}
+
+// ── Auto-prompt ────────────────────────────────────────────────────────────────
+
+// autoPromptRequest is the JSON body for POST /api/admin/image-gen/auto-prompt.
+type autoPromptRequest struct {
+	// Slug is the book slug.
+	Slug string `json:"slug"`
+	// Type is "cover" or "chapter".
+	Type string `json:"type"`
+	// Chapter number (required when type == "chapter").
+	Chapter int `json:"chapter"`
+	// Model is the text-gen model to use. Defaults to DefaultTextModel.
+	Model string `json:"model"`
+}
+
+// autoPromptResponse is returned by POST /api/admin/image-gen/auto-prompt.
+type autoPromptResponse struct {
+	Prompt string `json:"prompt"`
+	Model  string `json:"model"`
+}
+
+// handleAdminImageGenAutoPrompt handles POST /api/admin/image-gen/auto-prompt.
+//
+// Uses the text generation model to create a vivid image generation prompt
+// based on the book's description (for covers) or chapter title/content (for chapters).
+func (s *Server) handleAdminImageGenAutoPrompt(w http.ResponseWriter, r *http.Request) {
+	if s.deps.TextGen == nil {
+		jsonError(w, http.StatusServiceUnavailable, "text generation not configured")
+		return
+	}
+
+	var req autoPromptRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		jsonError(w, http.StatusBadRequest, "parse body: "+err.Error())
+		return
+	}
+	if strings.TrimSpace(req.Slug) == "" {
+		jsonError(w, http.StatusBadRequest, "slug is required")
+		return
+	}
+	if req.Type != "cover" && req.Type != "chapter" {
+		jsonError(w, http.StatusBadRequest, `type must be "cover" or "chapter"`)
+		return
+	}
+
+	meta, ok, err := s.deps.BookReader.ReadMetadata(r.Context(), req.Slug)
+	if err != nil {
+		jsonError(w, http.StatusInternalServerError, "read metadata: "+err.Error())
+		return
+	}
+	if !ok {
+		jsonError(w, http.StatusNotFound, fmt.Sprintf("book %q not found", req.Slug))
+		return
+	}
+
+	model := req.Model
+	if model == "" {
+		model = string(cfai.DefaultTextModel)
+	}
+
+	var userPrompt string
+	if req.Type == "cover" {
+		userPrompt = fmt.Sprintf(
+			"Book: \"%s\"\nAuthor: %s\nGenres: %s\n\nDescription:\n%s",
+			meta.Title,
+			meta.Author,
+			strings.Join(meta.Genres, ", "),
+			meta.Summary,
+		)
+	} else {
+		// For chapter images, use chapter title if available.
+		chapterTitle := fmt.Sprintf("Chapter %d", req.Chapter)
+		if req.Chapter > 0 {
+			chapters, listErr := s.deps.BookReader.ListChapters(r.Context(), req.Slug)
+			if listErr == nil {
+				for _, ch := range chapters {
+					if ch.Number == req.Chapter {
+						chapterTitle = ch.Title
+						break
+					}
+				}
+			}
+		}
+		userPrompt = fmt.Sprintf(
+			"Book: \"%s\"\nGenres: %s\nChapter: %s\n\nBook description:\n%s",
+			meta.Title,
+			strings.Join(meta.Genres, ", "),
+			chapterTitle,
+			meta.Summary,
+		)
+	}
+
+	systemPrompt := buildAutoPromptSystem(req.Type)
+
+	s.deps.Log.Info("admin: image auto-prompt requested",
+		"slug", req.Slug, "type", req.Type, "chapter", req.Chapter, "model", model)
+
+	result, genErr := s.deps.TextGen.Generate(r.Context(), cfai.TextRequest{
+		Model: cfai.TextModel(model),
+		Messages: []cfai.TextMessage{
+			{Role: "system", Content: systemPrompt},
+			{Role: "user", Content: userPrompt},
+		},
+		MaxTokens: 256,
+	})
+	if genErr != nil {
+		s.deps.Log.Error("admin: auto-prompt failed", "err", genErr)
+		jsonError(w, http.StatusBadGateway, "text generation failed: "+genErr.Error())
+		return
+	}
+
+	writeJSON(w, 0, autoPromptResponse{
+		Prompt: strings.TrimSpace(result),
+		Model:  model,
+	})
+}
+
+func buildAutoPromptSystem(imageType string) string {
+	if imageType == "cover" {
+		return `You are a professional prompt engineer for AI image generation (Stable Diffusion / FLUX models). ` +
+			`Given a book's title, genres, and description, write a single vivid image generation prompt ` +
+			`for a book cover. The prompt should describe the visual composition, art style, lighting, ` +
+			`and mood without mentioning text or typography. ` +
+			`Format: comma-separated visual descriptors, 30–60 words. ` +
+			`Output ONLY the prompt — no explanation, no quotes, no labels.`
+	}
+	return `You are a professional prompt engineer for AI image generation (Stable Diffusion / FLUX models). ` +
+		`Given a book's title, genres, and a specific chapter title, write a single vivid scene illustration prompt. ` +
+		`Describe the scene, characters, setting, lighting, and art style. ` +
+		`Format: comma-separated visual descriptors, 30–60 words. ` +
+		`Output ONLY the prompt — no explanation, no quotes, no labels.`
+}

backend/internal/backend/handlers_catalogue.go

@@ -16,32 +16,12 @@ import (
 	"fmt"
 	"net/http"
 	"strings"
-	"sync"
+	"time"
 
 	"github.com/libnovel/backend/internal/cfai"
 	"github.com/libnovel/backend/internal/domain"
 )
 
-// ── Cancel registry ────────────────────────────────────────────────────────
-
-// cancelJobsMu guards cancelJobs.
-var cancelJobsMu sync.Mutex
-
-// cancelJobs maps a job ID to its CancelFunc. Entries are added when a batch
-// job starts and removed when it finishes or is cancelled.
-var cancelJobs = map[string]context.CancelFunc{}
-
-func registerCancelJob(id string, cancel context.CancelFunc) {
-	cancelJobsMu.Lock()
-	cancelJobs[id] = cancel
-	cancelJobsMu.Unlock()
-}
-
-func deregisterCancelJob(id string) {
-	cancelJobsMu.Lock()
-	delete(cancelJobs, id)
-	cancelJobsMu.Unlock()
-}
 
 // ── Tagline ───────────────────────────────────────────────────────────────
 
@@ -452,8 +432,9 @@ type batchCoverEvent struct {
 // Streams SSE events as it generates covers for every book that has no cover
 // stored in MinIO. Each event carries progress info. The final event has Finish=true.
 //
-// The job can be cancelled by calling POST /api/admin/catalogue/batch-covers/cancel
-// with body {"job_id":"..."}.
+// Supports from_item/to_item to process a sub-range of the catalogue (0-based indices).
+// Supports job_id to resume a previously interrupted job.
+// The job can be cancelled by calling POST /api/admin/ai-jobs/{id}/cancel.
 func (s *Server) handleAdminBatchCovers(w http.ResponseWriter, r *http.Request) {
 	if s.deps.TextGen == nil || s.deps.ImageGen == nil {
 		jsonError(w, http.StatusServiceUnavailable, "image/text generation not configured")
@@ -469,22 +450,34 @@ func (s *Server) handleAdminBatchCovers(w http.ResponseWriter, r *http.Request)
 		NumSteps int    `json:"num_steps"`
 		Width    int    `json:"width"`
 		Height   int    `json:"height"`
+		FromItem int    `json:"from_item"`
+		ToItem   int    `json:"to_item"`
+		JobID    string `json:"job_id"`
 	}
 	// Body is optional — defaults used if absent.
 	json.NewDecoder(r.Body).Decode(&reqBody) //nolint:errcheck
 
-	books, err := s.deps.BookReader.ListBooks(r.Context())
+	allBooks, err := s.deps.BookReader.ListBooks(r.Context())
 	if err != nil {
 		jsonError(w, http.StatusInternalServerError, "list books: "+err.Error())
 		return
 	}
 
-	// Generate a unique job ID.
-	jobID := randomHex(8)
-	ctx, cancel := context.WithCancel(r.Context())
-	registerCancelJob(jobID, cancel)
-	defer deregisterCancelJob(jobID)
-	defer cancel()
+	// Apply range filter.
+	books := allBooks
+	if reqBody.FromItem > 0 || reqBody.ToItem > 0 {
+		from := reqBody.FromItem
+		to := reqBody.ToItem
+		if to == 0 || to >= len(allBooks) {
+			to = len(allBooks) - 1
+		}
+		if from < 0 {
+			from = 0
+		}
+		if from <= to && from < len(allBooks) {
+			books = allBooks[from : to+1]
+		}
+	}
 
 	// SSE headers.
 	w.Header().Set("Content-Type", "text/event-stream")
@@ -503,19 +496,75 @@ func (s *Server) handleAdminBatchCovers(w http.ResponseWriter, r *http.Request)
 	total := len(books)
 	done := 0
 
-	// Send initial event with jobID so frontend can store it for cancellation.
-	sseWrite(batchCoverEvent{JobID: jobID, Done: 0, Total: total})
+	// Create or resume PB ai_job and register cancel context.
+	var pbJobID string
+	resumeFrom := 0
+	ctx, cancel := context.WithCancel(r.Context())
+	defer cancel()
 
-	for _, book := range books {
+	if s.deps.AIJobStore != nil {
+		if reqBody.JobID != "" {
+			if existing, ok, _ := s.deps.AIJobStore.GetAIJob(r.Context(), reqBody.JobID); ok {
+				pbJobID = reqBody.JobID
+				resumeFrom = existing.ItemsDone
+				done = resumeFrom
+				_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), pbJobID, map[string]any{
+					"status":      string(domain.TaskStatusRunning),
+					"items_total": total,
+				})
+			}
+		}
+		if pbJobID == "" {
+			id, createErr := s.deps.AIJobStore.CreateAIJob(r.Context(), domain.AIJob{
+				Kind:       "batch-covers",
+				Status:     domain.TaskStatusRunning,
+				FromItem:   reqBody.FromItem,
+				ToItem:     reqBody.ToItem,
+				ItemsTotal: total,
+				Started:    time.Now(),
+			})
+			if createErr == nil {
+				pbJobID = id
+			}
+		}
+		if pbJobID != "" {
+			registerCancelJob(pbJobID, cancel)
+			defer deregisterCancelJob(pbJobID)
+		}
+	}
+
+	// Use pbJobID as the SSE job_id when available, else a random hex fallback.
+	sseJobID := pbJobID
+	if sseJobID == "" {
+		sseJobID = randomHex(8)
+		ctx2, cancel2 := context.WithCancel(r.Context())
+		registerCancelJob(sseJobID, cancel2)
+		defer deregisterCancelJob(sseJobID)
+		defer cancel2()
+		cancel() // replace ctx with ctx2
+		ctx = ctx2
+	}
+
+	// Send initial event with jobID so frontend can store it for cancellation.
+	sseWrite(batchCoverEvent{JobID: sseJobID, Done: done, Total: total})
+
+	for i, book := range books {
 		if ctx.Err() != nil {
 			break
 		}
+		// Skip already-processed items when resuming.
+		if i < resumeFrom {
+			continue
+		}
 
 		// Check if cover already exists.
 		hasCover := s.deps.CoverStore.CoverExists(ctx, book.Slug)
 		if hasCover {
 			done++
 			sseWrite(batchCoverEvent{Done: done, Total: total, Slug: book.Slug, Skipped: true})
+			if pbJobID != "" && s.deps.AIJobStore != nil {
+				_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), pbJobID, map[string]any{"items_done": done})
+			}
 			continue
 		}
 
@@ -547,6 +596,21 @@ func (s *Server) handleAdminBatchCovers(w http.ResponseWriter, r *http.Request)
 		done++
 		s.deps.Log.Info("batch-covers: cover generated", "slug", book.Slug)
 		sseWrite(batchCoverEvent{Done: done, Total: total, Slug: book.Slug})
+		if pbJobID != "" && s.deps.AIJobStore != nil {
+			_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), pbJobID, map[string]any{"items_done": done})
+		}
+	}
+
+	if pbJobID != "" && s.deps.AIJobStore != nil {
+		status := domain.TaskStatusDone
+		if ctx.Err() != nil {
+			status = domain.TaskStatusCancelled
+		}
+		_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), pbJobID, map[string]any{
+			"status":     string(status),
+			"items_done": done,
+			"finished":   time.Now().Format(time.RFC3339),
+		})
 	}
 
 	sseWrite(batchCoverEvent{Done: done, Total: total, Finish: true})

backend/internal/backend/handlers_textgen.go

@@ -1,10 +1,12 @@
 package backend
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"net/http"
 	"strings"
+	"time"
 
 	"github.com/libnovel/backend/internal/cfai"
 	"github.com/libnovel/backend/internal/domain"
@@ -38,6 +40,13 @@ type textGenChapterNamesRequest struct {
 	Model string `json:"model"`
 	// MaxTokens limits response length (0 = model default).
 	MaxTokens int `json:"max_tokens"`
+	// FromChapter is the first chapter to process (1-based). 0 = start from chapter 1.
+	FromChapter int `json:"from_chapter"`
+	// ToChapter is the last chapter to process (inclusive). 0 = process all.
+	ToChapter int `json:"to_chapter"`
+	// JobID is an optional existing ai_job ID for resuming a previous run.
+	// If set, the handler resumes from items_done instead of starting from scratch.
+	JobID string `json:"job_id"`
 }
 
 // proposedChapterTitle is a single chapter with its AI-proposed title.
@@ -51,6 +60,8 @@ type proposedChapterTitle struct {
 
 // chapterNamesBatchEvent is one SSE event emitted per processed batch.
 type chapterNamesBatchEvent struct {
+	// JobID is the PB ai_job ID for this run (emitted on the first event only).
+	JobID string `json:"job_id,omitempty"`
 	// Batch is the 1-based batch index.
 	Batch int `json:"batch"`
 	// TotalBatches is the total number of batches.
@@ -99,16 +110,36 @@ func (s *Server) handleAdminTextGenChapterNames(w http.ResponseWriter, r *http.R
 	}
 
 	// Load existing chapter list.
-	chapters, err := s.deps.BookReader.ListChapters(r.Context(), req.Slug)
+	allChapters, err := s.deps.BookReader.ListChapters(r.Context(), req.Slug)
 	if err != nil {
 		jsonError(w, http.StatusInternalServerError, "list chapters: "+err.Error())
 		return
 	}
-	if len(chapters) == 0 {
+	if len(allChapters) == 0 {
 		jsonError(w, http.StatusNotFound, fmt.Sprintf("no chapters found for slug %q", req.Slug))
 		return
 	}
 
+	// Apply chapter range filter.
+	chapters := allChapters
+	if req.FromChapter > 0 || req.ToChapter > 0 {
+		filtered := chapters[:0]
+		for _, ch := range allChapters {
+			if req.FromChapter > 0 && ch.Number < req.FromChapter {
+				continue
+			}
+			if req.ToChapter > 0 && ch.Number > req.ToChapter {
+				break
+			}
+			filtered = append(filtered, ch)
+		}
+		chapters = filtered
+	}
+	if len(chapters) == 0 {
+		jsonError(w, http.StatusBadRequest, "no chapters in the specified range")
+		return
+	}
+
 	model := cfai.TextModel(req.Model)
 	if model == "" {
 		model = cfai.DefaultTextModel
@@ -160,10 +191,58 @@ func (s *Server) handleAdminTextGenChapterNames(w http.ResponseWriter, r *http.R
 		}
 	}
 
-	chaptersDone := 0
+	// Create or resume an ai_job record for tracking.
+	var jobID string
+	resumeFrom := 0
+	jobCtx := r.Context()
+	var jobCancel context.CancelFunc
+
+	if s.deps.AIJobStore != nil {
+		if req.JobID != "" {
+			if existingJob, ok, _ := s.deps.AIJobStore.GetAIJob(r.Context(), req.JobID); ok {
+				jobID = req.JobID
+				resumeFrom = existingJob.ItemsDone
+				_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), jobID, map[string]any{
+					"status":      string(domain.TaskStatusRunning),
+					"items_total": len(chapters),
+				})
+			}
+		}
+		if jobID == "" {
+			jobPayload := fmt.Sprintf(`{"pattern":%q}`, req.Pattern)
+			id, createErr := s.deps.AIJobStore.CreateAIJob(r.Context(), domain.AIJob{
+				Kind:       "chapter-names",
+				Slug:       req.Slug,
+				Status:     domain.TaskStatusRunning,
+				FromItem:   req.FromChapter,
+				ToItem:     req.ToChapter,
+				ItemsTotal: len(chapters),
+				Model:      string(model),
+				Payload:    jobPayload,
+				Started:    time.Now(),
+			})
+			if createErr == nil {
+				jobID = id
+			}
+		}
+		if jobID != "" {
+			jobCtx, jobCancel = context.WithCancel(r.Context())
+			registerCancelJob(jobID, jobCancel)
+			defer deregisterCancelJob(jobID)
+			defer jobCancel()
+		}
+	}
+
+	chaptersDone := resumeFrom
+	firstEvent := true
 	for i, batch := range batches {
-		if r.Context().Err() != nil {
-			return // client disconnected
+		if jobCtx.Err() != nil {
+			return // client disconnected or cancelled
+		}
+		// Skip batches already processed in a previous run.
+		batchEnd := (i + 1) * chapterNamesBatchSize
+		if batchEnd <= resumeFrom {
+			continue
 		}
 
 		var chapterListSB strings.Builder
@@ -172,7 +251,7 @@ func (s *Server) handleAdminTextGenChapterNames(w http.ResponseWriter, r *http.R
 		}
 		userPrompt := fmt.Sprintf("Naming pattern: %s\n\nChapters:\n%s", req.Pattern, chapterListSB.String())
 
-		raw, genErr := s.deps.TextGen.Generate(r.Context(), cfai.TextRequest{
+		raw, genErr := s.deps.TextGen.Generate(jobCtx, cfai.TextRequest{
 			Model: model,
 			Messages: []cfai.TextMessage{
 				{Role: "system", Content: systemPrompt},
@@ -183,14 +262,19 @@ func (s *Server) handleAdminTextGenChapterNames(w http.ResponseWriter, r *http.R
 		if genErr != nil {
 			s.deps.Log.Error("admin: text-gen chapter-names batch failed",
 				"batch", i+1, "err", genErr)
-			sseWrite(chapterNamesBatchEvent{
+			evt := chapterNamesBatchEvent{
 				Batch:         i + 1,
 				TotalBatches:  totalBatches,
 				ChaptersDone:  chaptersDone,
 				TotalChapters: len(chapters),
 				Model:         string(model),
 				Error:         genErr.Error(),
-			})
+			}
+			if firstEvent {
+				evt.JobID = jobID
+				firstEvent = false
+			}
+			sseWrite(evt)
 			continue
 		}
 
@@ -205,13 +289,37 @@ func (s *Server) handleAdminTextGenChapterNames(w http.ResponseWriter, r *http.R
 		}
 		chaptersDone += len(batch)
 
-		sseWrite(chapterNamesBatchEvent{
+		if jobID != "" && s.deps.AIJobStore != nil {
+			_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), jobID, map[string]any{
+				"items_done": chaptersDone,
+			})
+		}
+
+		evt := chapterNamesBatchEvent{
 			Batch:         i + 1,
 			TotalBatches:  totalBatches,
 			ChaptersDone:  chaptersDone,
 			TotalChapters: len(chapters),
 			Model:         string(model),
 			Chapters:      result,
+		}
+		if firstEvent {
+			evt.JobID = jobID
+			firstEvent = false
+		}
+		sseWrite(evt)
+	}
+
+	// Mark job as done in PB.
+	if jobID != "" && s.deps.AIJobStore != nil {
+		status := domain.TaskStatusDone
+		if jobCtx.Err() != nil {
+			status = domain.TaskStatusCancelled
+		}
+		_ = s.deps.AIJobStore.UpdateAIJob(r.Context(), jobID, map[string]any{
+			"status":     string(status),
+			"items_done": chaptersDone,
+			"finished":   time.Now().Format(time.RFC3339),
 		})
 	}
 

backend/internal/backend/server.go

@@ -82,6 +82,9 @@ type Dependencies struct {
 	// BookWriter writes book metadata and chapter refs to PocketBase.
 	// Used by admin text-gen apply endpoints.
 	BookWriter bookstore.BookWriter
+	// AIJobStore tracks long-running AI generation jobs in PocketBase.
+	// If nil, job persistence is disabled (jobs still run but are not recorded).
+	AIJobStore bookstore.AIJobStore
 	// Log is the structured logger.
 	Log *slog.Logger
 }
@@ -214,6 +217,14 @@ func (s *Server) ListenAndServe(ctx context.Context) error {
 	mux.HandleFunc("POST /api/admin/catalogue/batch-covers/cancel", s.handleAdminBatchCoversCancel)
 	mux.HandleFunc("POST /api/admin/catalogue/refresh-metadata/{slug}", s.handleAdminRefreshMetadata)
 
+	// Admin AI job tracking endpoints
+	mux.HandleFunc("GET /api/admin/ai-jobs", s.handleAdminListAIJobs)
+	mux.HandleFunc("GET /api/admin/ai-jobs/{id}", s.handleAdminGetAIJob)
+	mux.HandleFunc("POST /api/admin/ai-jobs/{id}/cancel", s.handleAdminCancelAIJob)
+
+	// Auto-prompt generation from book/chapter content
+	mux.HandleFunc("POST /api/admin/image-gen/auto-prompt", s.handleAdminImageGenAutoPrompt)
+
 	// Admin data repair endpoints
 	mux.HandleFunc("POST /api/admin/dedup-chapters/{slug}", s.handleDedupChapters)
 

backend/internal/bookstore/bookstore.go

@@ -158,6 +158,19 @@ type CoverStore interface {
 	CoverExists(ctx context.Context, slug string) bool
 }
 
+// AIJobStore manages AI generation jobs tracked in PocketBase.
+type AIJobStore interface {
+	// CreateAIJob inserts a new ai_job record with status=running and returns its ID.
+	CreateAIJob(ctx context.Context, job domain.AIJob) (string, error)
+	// GetAIJob retrieves a single ai_job by ID.
+	// Returns (zero, false, nil) when not found.
+	GetAIJob(ctx context.Context, id string) (domain.AIJob, bool, error)
+	// UpdateAIJob patches an existing ai_job record with the given fields.
+	UpdateAIJob(ctx context.Context, id string, fields map[string]any) error
+	// ListAIJobs returns all ai_job records sorted by started descending.
+	ListAIJobs(ctx context.Context) ([]domain.AIJob, error)
+}
+
 // TranslationStore covers machine-translated chapter storage in MinIO.
 // The runner writes translations; the backend reads them.
 type TranslationStore interface {

backend/internal/domain/domain.go

@@ -169,3 +169,30 @@ type TranslationResult struct {
 	ObjectKey    string `json:"object_key,omitempty"`
 	ErrorMessage string `json:"error_message,omitempty"`
 }
+
+// AIJob represents an AI generation task tracked in PocketBase (ai_jobs collection).
+type AIJob struct {
+	ID string `json:"id"`
+	// Kind is one of: "chapter-names", "batch-covers", "chapter-covers", "refresh-metadata".
+	Kind string `json:"kind"`
+	// Slug is the book slug for per-book jobs; empty for catalogue-wide jobs.
+	Slug   string     `json:"slug"`
+	Status TaskStatus `json:"status"`
+	// FromItem is the first item to process (chapter number, or 0-based book index).
+	// 0 = start from the beginning.
+	FromItem int `json:"from_item"`
+	// ToItem is the last item to process (inclusive). 0 = process all.
+	ToItem int `json:"to_item"`
+	// ItemsDone is the cumulative count of successfully processed items.
+	ItemsDone int `json:"items_done"`
+	// ItemsTotal is the total number of items in this job.
+	ItemsTotal int `json:"items_total"`
+	Model      string `json:"model"`
+	// Payload is a JSON-encoded string with job-specific parameters
+	// (e.g. naming pattern for chapter-names, num_steps for batch-covers).
+	Payload      string    `json:"payload"`
+	ErrorMessage string    `json:"error_message,omitempty"`
+	Started      time.Time `json:"started,omitempty"`
+	Finished     time.Time `json:"finished,omitempty"`
+	HeartbeatAt  time.Time `json:"heartbeat_at,omitempty"`
+}

backend/internal/storage/store.go

@@ -53,6 +53,7 @@ var _ bookstore.PresignStore = (*Store)(nil)
 var _ bookstore.ProgressStore = (*Store)(nil)
 var _ bookstore.CoverStore = (*Store)(nil)
 var _ bookstore.TranslationStore = (*Store)(nil)
+var _ bookstore.AIJobStore = (*Store)(nil)
 var _ taskqueue.Producer = (*Store)(nil)
 var _ taskqueue.Consumer = (*Store)(nil)
 var _ taskqueue.Reader = (*Store)(nil)
@@ -1063,3 +1064,107 @@ func (s *Store) GetTranslation(ctx context.Context, key string) (string, error)
 	}
 	return string(data), nil
 }
+
+// ── AIJobStore ────────────────────────────────────────────────────────────────
+
+func (s *Store) CreateAIJob(ctx context.Context, job domain.AIJob) (string, error) {
+	payload := map[string]any{
+		"kind":        job.Kind,
+		"slug":        job.Slug,
+		"status":      string(job.Status),
+		"from_item":   job.FromItem,
+		"to_item":     job.ToItem,
+		"items_done":  job.ItemsDone,
+		"items_total": job.ItemsTotal,
+		"model":       job.Model,
+		"payload":     job.Payload,
+		"started":     job.Started.Format(time.RFC3339),
+	}
+	var out struct {
+		ID string `json:"id"`
+	}
+	if err := s.pb.post(ctx, "/api/collections/ai_jobs/records", payload, &out); err != nil {
+		return "", fmt.Errorf("CreateAIJob: %w", err)
+	}
+	return out.ID, nil
+}
+
+func (s *Store) GetAIJob(ctx context.Context, id string) (domain.AIJob, bool, error) {
+	var raw json.RawMessage
+	if err := s.pb.get(ctx, fmt.Sprintf("/api/collections/ai_jobs/records/%s", id), &raw); err != nil {
+		if strings.Contains(err.Error(), "404") {
+			return domain.AIJob{}, false, nil
+		}
+		return domain.AIJob{}, false, fmt.Errorf("GetAIJob: %w", err)
+	}
+	job, err := parseAIJob(raw)
+	if err != nil {
+		return domain.AIJob{}, false, err
+	}
+	return job, true, nil
+}
+
+func (s *Store) UpdateAIJob(ctx context.Context, id string, fields map[string]any) error {
+	return s.pb.patch(ctx, fmt.Sprintf("/api/collections/ai_jobs/records/%s", id), fields)
+}
+
+func (s *Store) ListAIJobs(ctx context.Context) ([]domain.AIJob, error) {
+	items, err := s.pb.listAll(ctx, "ai_jobs", "", "-started")
+	if err != nil {
+		return nil, fmt.Errorf("ListAIJobs: %w", err)
+	}
+	out := make([]domain.AIJob, 0, len(items))
+	for _, raw := range items {
+		j, err := parseAIJob(raw)
+		if err != nil {
+			continue
+		}
+		out = append(out, j)
+	}
+	return out, nil
+}
+
+func parseAIJob(raw json.RawMessage) (domain.AIJob, error) {
+	var r struct {
+		ID           string `json:"id"`
+		Kind         string `json:"kind"`
+		Slug         string `json:"slug"`
+		Status       string `json:"status"`
+		FromItem     int    `json:"from_item"`
+		ToItem       int    `json:"to_item"`
+		ItemsDone    int    `json:"items_done"`
+		ItemsTotal   int    `json:"items_total"`
+		Model        string `json:"model"`
+		Payload      string `json:"payload"`
+		ErrorMessage string `json:"error_message"`
+		Started      string `json:"started"`
+		Finished     string `json:"finished"`
+		HeartbeatAt  string `json:"heartbeat_at"`
+	}
+	if err := json.Unmarshal(raw, &r); err != nil {
+		return domain.AIJob{}, fmt.Errorf("parseAIJob: %w", err)
+	}
+	parseT := func(s string) time.Time {
+		if s == "" {
+			return time.Time{}
+		}
+		t, _ := time.Parse(time.RFC3339, s)
+		return t
+	}
+	return domain.AIJob{
+		ID:           r.ID,
+		Kind:         r.Kind,
+		Slug:         r.Slug,
+		Status:       domain.TaskStatus(r.Status),
+		FromItem:     r.FromItem,
+		ToItem:       r.ToItem,
+		ItemsDone:    r.ItemsDone,
+		ItemsTotal:   r.ItemsTotal,
+		Model:        r.Model,
+		Payload:      r.Payload,
+		ErrorMessage: r.ErrorMessage,
+		Started:      parseT(r.Started),
+		Finished:     parseT(r.Finished),
+		HeartbeatAt:  parseT(r.HeartbeatAt),
+	}, nil
+}

docker-compose.yml

@@ -302,6 +302,8 @@ services:
       PUBLIC_UMAMI_SCRIPT_URL: "${PUBLIC_UMAMI_SCRIPT_URL}"
       # GlitchTip client + server-side error tracking
       PUBLIC_GLITCHTIP_DSN: "${PUBLIC_GLITCHTIP_DSN}"
+      # Grafana Faro RUM (browser Web Vitals, traces, errors)
+      PUBLIC_FARO_COLLECTOR_URL: "${PUBLIC_FARO_COLLECTOR_URL}"
       # OpenTelemetry tracing
       OTEL_EXPORTER_OTLP_ENDPOINT: "${OTEL_EXPORTER_OTLP_ENDPOINT}"
       OTEL_SERVICE_NAME: "ui"

homelab/docker-compose.yml

@@ -18,6 +18,7 @@
 #   uptime.libnovel.cc    → uptime-kuma:3001
 #   push.libnovel.cc      → gotify:80
 #   grafana.libnovel.cc   → grafana:3000
+#   faro.libnovel.cc      → alloy:12347
 
 services:
 
@@ -168,6 +169,9 @@ services:
       VALKEY_URL: "redis://valkey:6379/1"
       PORT: "8000"
       ENABLE_USER_REGISTRATION: "false"
+      MEDIA_ROOT: "/code/uploads"
+    volumes:
+      - glitchtip_uploads:/code/uploads
     healthcheck:
       test: ["CMD", "python3", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/0/')"]
       interval: 15s
@@ -189,6 +193,9 @@ services:
       DEFAULT_FROM_EMAIL: "noreply@libnovel.cc"
       VALKEY_URL: "redis://valkey:6379/1"
       SERVER_ROLE: "worker"
+      MEDIA_ROOT: "/code/uploads"
+    volumes:
+      - glitchtip_uploads:/code/uploads
 
   # ── Umami ───────────────────────────────────────────────────────────────────
   umami:
@@ -346,6 +353,23 @@ services:
       timeout: 5s
       retries: 5
 
+  # ── Grafana Alloy (Faro RUM receiver) ───────────────────────────────────────
+  # Receives browser telemetry from @grafana/faro-web-sdk (Web Vitals, traces,
+  # errors). Exposes POST /collect at faro.libnovel.cc via cloudflared.
+  # Forwards traces to otel-collector (→ Tempo) and logs to Loki directly.
+  alloy:
+    image: grafana/alloy:latest
+    restart: unless-stopped
+    command: ["run", "--server.http.listen-addr=0.0.0.0:12348", "/etc/alloy/alloy.river"]
+    volumes:
+      - ./otel/alloy.river:/etc/alloy/alloy.river:ro
+    expose:
+      - "12347"  # Faro HTTP receiver (POST /collect)
+      - "12348"  # Alloy UI / health endpoint
+    depends_on:
+      - otel-collector
+      - loki
+
   # ── OTel Collector ──────────────────────────────────────────────────────────
   # Receives OTLP from backend/ui/runner, fans out to Tempo + Prometheus + Loki.
   otel-collector:
@@ -522,3 +546,4 @@ volumes:
   grafana_data:
   pocket_tts_cache:
   hf_cache:
+  glitchtip_uploads:

homelab/otel/alloy.river

@@ -0,0 +1,43 @@
+// Grafana Alloy — Faro RUM receiver
+//
+// Receives browser telemetry (Web Vitals, traces, logs, exceptions) from the
+// LibNovel SvelteKit frontend via the @grafana/faro-web-sdk.
+//
+// Pipeline:
+//   faro.receiver  → receives HTTP POST /collect from browsers
+//   otelcol.exporter.otlphttp → forwards traces to OTel Collector → Tempo
+//   loki.write                → forwards logs/exceptions to Loki
+//
+// The Faro endpoint is exposed publicly at faro.libnovel.cc via cloudflared.
+// CORS is configured to allow requests from libnovel.cc.
+
+faro.receiver "faro" {
+  server {
+    listen_address = "0.0.0.0"
+    listen_port    = 12347
+
+    cors_allowed_origins = ["https://libnovel.cc", "https://www.libnovel.cc"]
+  }
+
+  output {
+    logs   = [loki.write.faro.receiver]
+    traces = [otelcol.exporter.otlphttp.faro.input]
+  }
+}
+
+// Forward Faro traces to the OTel Collector (which routes to Tempo)
+otelcol.exporter.otlphttp "faro" {
+  client {
+    endpoint = "http://otel-collector:4318"
+    tls {
+      insecure = true
+    }
+  }
+}
+
+// Forward Faro logs/exceptions directly to Loki
+loki.write "faro" {
+  endpoint {
+    url = "http://loki:3100/loki/api/v1/push"
+  }
+}

homelab/otel/collector.yaml

@@ -53,6 +53,9 @@ extensions:
 
 service:
   extensions: [health_check, pprof]
+  telemetry:
+    metrics:
+      address: 0.0.0.0:8888
   pipelines:
     traces:
       receivers: [otlp]

homelab/otel/grafana/provisioning/dashboards/backend.json

@@ -1,7 +1,7 @@
 {
   "uid": "libnovel-backend",
   "title": "Backend API",
-  "description": "Request rate, error rate, and latency for the LibNovel backend. Powered by Tempo span metrics and UI OTel instrumentation.",
+  "description": "Request rate, error rate, and latency for the LibNovel backend. Powered by Tempo span metrics.",
   "tags": ["libnovel", "backend", "api"],
   "timezone": "browser",
   "refresh": "30s",
@@ -173,7 +173,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"backend\", http_response_status_code=~\"5..\"}[5m])) * 60",
+          "expr": "sum(rate(traces_spanmetrics_calls_total{service=\"backend\", status_code=\"STATUS_CODE_ERROR\"}[5m])) * 60",
           "legendFormat": "5xx/min",
           "instant": true
         }
@@ -182,7 +182,7 @@
     {
       "id": 10,
       "type": "timeseries",
-      "title": "Request Rate by Status",
+      "title": "Request Rate (total vs errors)",
       "gridPos": { "x": 0, "y": 4, "w": 12, "h": 8 },
       "options": {
         "tooltip": { "mode": "multi" },
@@ -191,27 +191,21 @@
       "fieldConfig": {
         "defaults": { "unit": "reqps", "custom": { "lineWidth": 2, "fillOpacity": 10 } },
         "overrides": [
-          { "matcher": { "id": "byFrameRefID", "options": "errors" }, "properties": [{ "id": "color", "value": { "fixedColor": "red", "mode": "fixed" } }] }
+          { "matcher": { "id": "byName", "options": "errors" }, "properties": [{ "id": "color", "value": { "fixedColor": "red", "mode": "fixed" } }] }
         ]
       },
       "targets": [
         {
-          "refId": "success",
+          "refId": "total",
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"backend\", http_response_status_code=~\"2..\"}[5m]))",
-          "legendFormat": "2xx"
-        },
-        {
-          "refId": "notfound",
-          "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"backend\", http_response_status_code=~\"4..\"}[5m]))",
-          "legendFormat": "4xx"
+          "expr": "sum(rate(traces_spanmetrics_calls_total{service=\"backend\"}[5m]))",
+          "legendFormat": "total"
         },
         {
           "refId": "errors",
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"backend\", http_response_status_code=~\"5..\"}[5m]))",
-          "legendFormat": "5xx"
+          "expr": "sum(rate(traces_spanmetrics_calls_total{service=\"backend\", status_code=\"STATUS_CODE_ERROR\"}[5m]))",
+          "legendFormat": "errors"
         }
       ]
     },
@@ -248,50 +242,30 @@
     {
       "id": 12,
       "type": "timeseries",
-      "title": "Requests / min by HTTP method (UI → Backend)",
+      "title": "Request Rate by Span Name (top operations)",
       "gridPos": { "x": 0, "y": 12, "w": 12, "h": 8 },
+      "description": "Throughput broken down by HTTP route / span name from Tempo span metrics.",
       "options": {
         "tooltip": { "mode": "multi" },
         "legend": { "displayMode": "list", "placement": "bottom" }
       },
       "fieldConfig": {
-        "defaults": { "unit": "short", "custom": { "lineWidth": 2, "fillOpacity": 5 } }
+        "defaults": { "unit": "reqps", "custom": { "lineWidth": 2, "fillOpacity": 5 } }
       },
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"backend\"}[5m])) by (http_request_method) * 60",
-          "legendFormat": "{{http_request_method}}"
+          "expr": "topk(10, sum(rate(traces_spanmetrics_calls_total{service=\"backend\"}[5m])) by (span_name))",
+          "legendFormat": "{{span_name}}"
         }
       ]
     },
     {
       "id": 13,
       "type": "timeseries",
-      "title": "Requests / min — UI → PocketBase",
+      "title": "Latency by Span Name (p95)",
       "gridPos": { "x": 12, "y": 12, "w": 12, "h": 8 },
-      "description": "Traffic from SvelteKit server to PocketBase (auth, collections, etc.).",
-      "options": {
-        "tooltip": { "mode": "multi" },
-        "legend": { "displayMode": "list", "placement": "bottom" }
-      },
-      "fieldConfig": {
-        "defaults": { "unit": "short", "custom": { "lineWidth": 2, "fillOpacity": 5 } }
-      },
-      "targets": [
-        {
-          "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "sum(rate(http_client_request_duration_seconds_count{job=\"ui\", server_address=\"pocketbase\"}[5m])) by (http_request_method, http_response_status_code) * 60",
-          "legendFormat": "{{http_request_method}} {{http_response_status_code}}"
-        }
-      ]
-    },
-    {
-      "id": 14,
-      "type": "timeseries",
-      "title": "UI → Backend Latency (p50 / p95)",
-      "gridPos": { "x": 0, "y": 20, "w": 12, "h": 8 },
-      "description": "HTTP client latency as seen from the SvelteKit SSR layer calling backend.",
+      "description": "p95 latency per operation — helps identify slow endpoints.",
       "options": {
         "tooltip": { "mode": "multi" },
         "legend": { "displayMode": "list", "placement": "bottom" }
@@ -302,13 +276,8 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "histogram_quantile(0.50, sum(rate(http_client_request_duration_seconds_bucket{job=\"ui\", server_address=\"backend\"}[5m])) by (le))",
-          "legendFormat": "p50"
-        },
-        {
-          "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "histogram_quantile(0.95, sum(rate(http_client_request_duration_seconds_bucket{job=\"ui\", server_address=\"backend\"}[5m])) by (le))",
-          "legendFormat": "p95"
+          "expr": "topk(10, histogram_quantile(0.95, sum(rate(traces_spanmetrics_latency_bucket{service=\"backend\"}[5m])) by (le, span_name)))",
+          "legendFormat": "{{span_name}}"
         }
       ]
     },
@@ -316,7 +285,7 @@
       "id": 20,
       "type": "logs",
       "title": "Backend Errors",
-      "gridPos": { "x": 0, "y": 28, "w": 24, "h": 10 },
+      "gridPos": { "x": 0, "y": 20, "w": 24, "h": 10 },
       "options": {
         "showTime": true,
         "showLabels": false,

homelab/otel/grafana/provisioning/dashboards/runner.json

@@ -35,7 +35,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_tasks_running",
+          "expr": "runner_tasks_running",
           "legendFormat": "running",
           "instant": true
         }
@@ -61,7 +61,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_tasks_completed_total",
+          "expr": "runner_tasks_completed_total",
           "legendFormat": "completed",
           "instant": true
         }
@@ -93,7 +93,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_tasks_failed_total",
+          "expr": "runner_tasks_failed_total",
           "legendFormat": "failed",
           "instant": true
         }
@@ -126,7 +126,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_uptime_seconds",
+          "expr": "runner_uptime_seconds",
           "legendFormat": "uptime",
           "instant": true
         }
@@ -159,7 +159,7 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_tasks_failed_total / clamp_min(libnovel_runner_tasks_completed_total + libnovel_runner_tasks_failed_total, 1)",
+          "expr": "runner_tasks_failed_total / clamp_min(runner_tasks_completed_total + runner_tasks_failed_total, 1)",
           "legendFormat": "failure rate",
           "instant": true
         }
@@ -215,17 +215,17 @@
       "targets": [
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "rate(libnovel_runner_tasks_completed_total[5m]) * 60",
+          "expr": "rate(runner_tasks_completed_total[5m]) * 60",
           "legendFormat": "completed"
         },
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "rate(libnovel_runner_tasks_failed_total[5m]) * 60",
+          "expr": "rate(runner_tasks_failed_total[5m]) * 60",
           "legendFormat": "failed"
         },
         {
           "datasource": { "type": "prometheus", "uid": "prometheus" },
-          "expr": "libnovel_runner_tasks_running",
+          "expr": "runner_tasks_running",
           "legendFormat": "running"
         }
       ]

homelab/otel/grafana/provisioning/dashboards/web-vitals.json

@@ -0,0 +1,284 @@
+{
+  "uid": "libnovel-web-vitals",
+  "title": "Web Vitals (RUM)",
+  "description": "Real User Monitoring — Core Web Vitals (LCP, CLS, INP, TTFB, FCP) from @grafana/faro-web-sdk. Data flows: browser → Alloy faro.receiver → Tempo (traces) + Loki (logs).",
+  "tags": ["libnovel", "frontend", "rum", "web-vitals"],
+  "timezone": "browser",
+  "refresh": "1m",
+  "time": { "from": "now-24h", "to": "now" },
+  "schemaVersion": 39,
+  "panels": [
+    {
+      "id": 1,
+      "type": "stat",
+      "title": "LCP — p75 (Largest Contentful Paint)",
+      "description": "Good < 2.5 s, needs improvement < 4 s, poor ≥ 4 s.",
+      "gridPos": { "x": 0, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "background", "graphMode": "none" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "ms",
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              { "color": "green", "value": null },
+              { "color": "yellow", "value": 2500 },
+              { "color": "red", "value": 4000 }
+            ]
+          }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*lcp|LCP\"}[1h])) by (le)) * 1000",
+          "legendFormat": "LCP p75",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 2,
+      "type": "stat",
+      "title": "INP — p75 (Interaction to Next Paint)",
+      "description": "Good < 200 ms, needs improvement < 500 ms, poor ≥ 500 ms.",
+      "gridPos": { "x": 4, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "background", "graphMode": "none" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "ms",
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              { "color": "green", "value": null },
+              { "color": "yellow", "value": 200 },
+              { "color": "red", "value": 500 }
+            ]
+          }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*inp|INP\"}[1h])) by (le)) * 1000",
+          "legendFormat": "INP p75",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 3,
+      "type": "stat",
+      "title": "CLS — p75 (Cumulative Layout Shift)",
+      "description": "Good < 0.1, needs improvement < 0.25, poor ≥ 0.25.",
+      "gridPos": { "x": 8, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "background", "graphMode": "none" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "short",
+          "decimals": 3,
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              { "color": "green", "value": null },
+              { "color": "yellow", "value": 0.1 },
+              { "color": "red", "value": 0.25 }
+            ]
+          }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*cls|CLS\"}[1h])) by (le))",
+          "legendFormat": "CLS p75",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 4,
+      "type": "stat",
+      "title": "TTFB — p75 (Time to First Byte)",
+      "description": "Good < 800 ms, needs improvement < 1800 ms, poor ≥ 1800 ms.",
+      "gridPos": { "x": 12, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "background", "graphMode": "none" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "ms",
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              { "color": "green", "value": null },
+              { "color": "yellow", "value": 800 },
+              { "color": "red", "value": 1800 }
+            ]
+          }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*ttfb|TTFB\"}[1h])) by (le)) * 1000",
+          "legendFormat": "TTFB p75",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 5,
+      "type": "stat",
+      "title": "FCP — p75 (First Contentful Paint)",
+      "description": "Good < 1.8 s, needs improvement < 3 s, poor ≥ 3 s.",
+      "gridPos": { "x": 16, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "background", "graphMode": "none" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "ms",
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              { "color": "green", "value": null },
+              { "color": "yellow", "value": 1800 },
+              { "color": "red", "value": 3000 }
+            ]
+          }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*fcp|FCP\"}[1h])) by (le)) * 1000",
+          "legendFormat": "FCP p75",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 6,
+      "type": "stat",
+      "title": "Active Sessions (30 min)",
+      "gridPos": { "x": 20, "y": 0, "w": 4, "h": 4 },
+      "options": { "reduceOptions": { "calcs": ["lastNotNull"] }, "colorMode": "value", "graphMode": "area" },
+      "fieldConfig": {
+        "defaults": {
+          "unit": "short",
+          "thresholds": { "mode": "absolute", "steps": [{ "color": "green", "value": null }] }
+        }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "sum(rate(traces_spanmetrics_calls_total{service=\"libnovel-ui\"}[30m]))",
+          "legendFormat": "sessions",
+          "instant": true
+        }
+      ]
+    },
+    {
+      "id": 10,
+      "type": "timeseries",
+      "title": "LCP over time (p50 / p75 / p95)",
+      "gridPos": { "x": 0, "y": 4, "w": 12, "h": 8 },
+      "options": { "tooltip": { "mode": "multi" }, "legend": { "displayMode": "list", "placement": "bottom" } },
+      "fieldConfig": {
+        "defaults": { "unit": "ms", "custom": { "lineWidth": 2, "fillOpacity": 10 } },
+        "overrides": [
+          { "matcher": { "id": "byName", "options": "Good (2.5s)" }, "properties": [{ "id": "color", "value": { "fixedColor": "green", "mode": "fixed" } }, { "id": "custom.lineStyle", "value": { "fill": "dash", "dash": [4, 4] } }] },
+          { "matcher": { "id": "byName", "options": "Poor (4s)" }, "properties": [{ "id": "color", "value": { "fixedColor": "red", "mode": "fixed" } }, { "id": "custom.lineStyle", "value": { "fill": "dash", "dash": [4, 4] } }] }
+        ]
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.50, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*lcp|LCP\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p50"
+        },
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*lcp|LCP\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p75"
+        },
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.95, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*lcp|LCP\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p95"
+        },
+        { "datasource": { "type": "prometheus", "uid": "prometheus" }, "expr": "2500", "legendFormat": "Good (2.5s)" },
+        { "datasource": { "type": "prometheus", "uid": "prometheus" }, "expr": "4000", "legendFormat": "Poor (4s)" }
+      ]
+    },
+    {
+      "id": 11,
+      "type": "timeseries",
+      "title": "TTFB over time (p50 / p75 / p95)",
+      "gridPos": { "x": 12, "y": 4, "w": 12, "h": 8 },
+      "options": { "tooltip": { "mode": "multi" }, "legend": { "displayMode": "list", "placement": "bottom" } },
+      "fieldConfig": {
+        "defaults": { "unit": "ms", "custom": { "lineWidth": 2, "fillOpacity": 10 } }
+      },
+      "targets": [
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.50, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*ttfb|TTFB\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p50"
+        },
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.75, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*ttfb|TTFB\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p75"
+        },
+        {
+          "datasource": { "type": "prometheus", "uid": "prometheus" },
+          "expr": "histogram_quantile(0.95, sum(rate(traces_spanmetrics_latency_bucket{service=\"libnovel-ui\", span_name=~\"faro.*ttfb|TTFB\"}[5m])) by (le)) * 1000",
+          "legendFormat": "p95"
+        }
+      ]
+    },
+    {
+      "id": 20,
+      "type": "logs",
+      "title": "Frontend Errors & Exceptions",
+      "description": "JS exceptions and console errors captured by Faro and shipped to Loki.",
+      "gridPos": { "x": 0, "y": 12, "w": 24, "h": 10 },
+      "options": {
+        "showTime": true,
+        "showLabels": true,
+        "wrapLogMessage": true,
+        "prettifyLogMessage": true,
+        "enableLogDetails": true,
+        "sortOrder": "Descending",
+        "dedupStrategy": "none"
+      },
+      "targets": [
+        {
+          "datasource": { "type": "loki", "uid": "loki" },
+          "expr": "{service_name=\"libnovel-ui\"} | json | kind =~ `(exception|error)`",
+          "legendFormat": ""
+        }
+      ]
+    },
+    {
+      "id": 21,
+      "type": "logs",
+      "title": "Frontend Logs (all Faro events)",
+      "gridPos": { "x": 0, "y": 22, "w": 24, "h": 10 },
+      "options": {
+        "showTime": true,
+        "showLabels": false,
+        "wrapLogMessage": true,
+        "prettifyLogMessage": true,
+        "enableLogDetails": true,
+        "sortOrder": "Descending",
+        "dedupStrategy": "none"
+      },
+      "targets": [
+        {
+          "datasource": { "type": "loki", "uid": "loki" },
+          "expr": "{service_name=\"libnovel-ui\"}",
+          "legendFormat": ""
+        }
+      ]
+    }
+  ]
+}

scripts/pb-init-v3.sh

@@ -294,6 +294,23 @@ create "translation_jobs" '{
     {"name":"heartbeat_at", "type":"date"}
   ]}'
 
+create "ai_jobs" '{
+  "name":"ai_jobs","type":"base","fields":[
+    {"name":"kind",          "type":"text",  "required":true},
+    {"name":"slug",          "type":"text"},
+    {"name":"status",        "type":"text",  "required":true},
+    {"name":"from_item",     "type":"number"},
+    {"name":"to_item",       "type":"number"},
+    {"name":"items_done",    "type":"number"},
+    {"name":"items_total",   "type":"number"},
+    {"name":"model",         "type":"text"},
+    {"name":"payload",       "type":"text"},
+    {"name":"error_message", "type":"text"},
+    {"name":"started",       "type":"date"},
+    {"name":"finished",      "type":"date"},
+    {"name":"heartbeat_at",  "type":"date"}
+  ]}'
+
 create "discovery_votes" '{
   "name":"discovery_votes","type":"base","fields":[
     {"name":"session_id","type":"text","required":true},

ui/messages/en.json

@@ -410,6 +410,7 @@
   "admin_nav_uptime": "Uptime",
   "admin_nav_push": "Push",
   "admin_nav_gitea": "Gitea",
+  "admin_nav_grafana": "Grafana",
 
   "admin_scrape_status_idle": "Idle",
   "admin_scrape_status_running": "Running",

ui/messages/fr.json

@@ -471,5 +471,6 @@
   "feed_chapters_label": "{n} chapitres",
   "feed_browse_cta": "Parcourir le catalogue",
   "feed_find_users_cta": "Trouver des lecteurs",
-  "admin_nav_gitea": "Gitea"
+  "admin_nav_gitea": "Gitea",
+  "admin_nav_grafana": "Grafana"
 }

ui/messages/id.json

@@ -471,5 +471,6 @@
   "feed_chapters_label": "{n} bab",
   "feed_browse_cta": "Jelajahi katalog",
   "feed_find_users_cta": "Temukan pembaca",
-  "admin_nav_gitea": "Gitea"
+  "admin_nav_gitea": "Gitea",
+  "admin_nav_grafana": "Grafana"
 }

ui/messages/pt.json

@@ -471,5 +471,6 @@
   "feed_chapters_label": "{n} capítulos",
   "feed_browse_cta": "Ver catálogo",
   "feed_find_users_cta": "Encontrar leitores",
-  "admin_nav_gitea": "Gitea"
+  "admin_nav_gitea": "Gitea",
+  "admin_nav_grafana": "Grafana"
 }

ui/messages/ru.json

@@ -471,5 +471,6 @@
   "feed_chapters_label": "{n} глав",
   "feed_browse_cta": "Каталог",
   "feed_find_users_cta": "Найти читателей",
-  "admin_nav_gitea": "Gitea"
+  "admin_nav_gitea": "Gitea",
+  "admin_nav_grafana": "Grafana"
 }

ui/package-lock.json

@@ -10,6 +10,7 @@
 			"dependencies": {
 				"@aws-sdk/client-s3": "^3.1005.0",
 				"@aws-sdk/s3-request-presigner": "^3.1005.0",
+				"@grafana/faro-web-sdk": "^2.3.1",
 				"@inlang/paraglide-js": "^2.15.1",
 				"@opentelemetry/exporter-logs-otlp-http": "^0.214.0",
 				"@opentelemetry/exporter-trace-otlp-http": "^0.214.0",
@@ -1689,6 +1690,115 @@
 				"module-details-from-path": "^1.0.4"
 			}
 		},
+		"node_modules/@grafana/faro-core": {
+			"version": "2.3.1",
+			"resolved": "https://registry.npmjs.org/@grafana/faro-core/-/faro-core-2.3.1.tgz",
+			"integrity": "sha512-htDKO0YFKr0tfntrPoM151vOPSZzmP6oE0+0MDvbI1WDaBW4erXmYi3feGJLWDXt5/vZBg9iQRmZoRzTLTTcOA==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/api": "^1.9.0",
+				"@opentelemetry/otlp-transformer": "^0.213.0"
+			}
+		},
+		"node_modules/@grafana/faro-core/node_modules/@opentelemetry/otlp-transformer": {
+			"version": "0.213.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/otlp-transformer/-/otlp-transformer-0.213.0.tgz",
+			"integrity": "sha512-RSuAlxFFPjeK4d5Y6ps8L2WhaQI6CXWllIjvo5nkAlBpmq2XdYWEBGiAbOF4nDs8CX4QblJDv5BbMUft3sEfDw==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/api-logs": "0.213.0",
+				"@opentelemetry/core": "2.6.0",
+				"@opentelemetry/resources": "2.6.0",
+				"@opentelemetry/sdk-logs": "0.213.0",
+				"@opentelemetry/sdk-metrics": "2.6.0",
+				"@opentelemetry/sdk-trace-base": "2.6.0",
+				"protobufjs": "^7.0.0"
+			},
+			"engines": {
+				"node": "^18.19.0 || >=20.6.0"
+			},
+			"peerDependencies": {
+				"@opentelemetry/api": "^1.3.0"
+			}
+		},
+		"node_modules/@grafana/faro-core/node_modules/@opentelemetry/resources": {
+			"version": "2.6.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/resources/-/resources-2.6.0.tgz",
+			"integrity": "sha512-D4y/+OGe3JSuYUCBxtH5T9DSAWNcvCb/nQWIga8HNtXTVPQn59j0nTBAgaAXxUVBDl40mG3Tc76b46wPlZaiJQ==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/core": "2.6.0",
+				"@opentelemetry/semantic-conventions": "^1.29.0"
+			},
+			"engines": {
+				"node": "^18.19.0 || >=20.6.0"
+			},
+			"peerDependencies": {
+				"@opentelemetry/api": ">=1.3.0 <1.10.0"
+			}
+		},
+		"node_modules/@grafana/faro-core/node_modules/@opentelemetry/sdk-logs": {
+			"version": "0.213.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/sdk-logs/-/sdk-logs-0.213.0.tgz",
+			"integrity": "sha512-00xlU3GZXo3kXKve4DLdrAL0NAFUaZ9appU/mn00S/5kSUdAvyYsORaDUfR04Mp2CLagAOhrzfUvYozY/EZX2g==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/api-logs": "0.213.0",
+				"@opentelemetry/core": "2.6.0",
+				"@opentelemetry/resources": "2.6.0",
+				"@opentelemetry/semantic-conventions": "^1.29.0"
+			},
+			"engines": {
+				"node": "^18.19.0 || >=20.6.0"
+			},
+			"peerDependencies": {
+				"@opentelemetry/api": ">=1.4.0 <1.10.0"
+			}
+		},
+		"node_modules/@grafana/faro-core/node_modules/@opentelemetry/sdk-metrics": {
+			"version": "2.6.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/sdk-metrics/-/sdk-metrics-2.6.0.tgz",
+			"integrity": "sha512-CicxWZxX6z35HR83jl+PLgtFgUrKRQ9LCXyxgenMnz5A1lgYWfAog7VtdOvGkJYyQgMNPhXQwkYrDLujk7z1Iw==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/core": "2.6.0",
+				"@opentelemetry/resources": "2.6.0"
+			},
+			"engines": {
+				"node": "^18.19.0 || >=20.6.0"
+			},
+			"peerDependencies": {
+				"@opentelemetry/api": ">=1.9.0 <1.10.0"
+			}
+		},
+		"node_modules/@grafana/faro-core/node_modules/@opentelemetry/sdk-trace-base": {
+			"version": "2.6.0",
+			"resolved": "https://registry.npmjs.org/@opentelemetry/sdk-trace-base/-/sdk-trace-base-2.6.0.tgz",
+			"integrity": "sha512-g/OZVkqlxllgFM7qMKqbPV9c1DUPhQ7d4n3pgZFcrnrNft9eJXZM2TNHTPYREJBrtNdRytYyvwjgL5geDKl3EQ==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@opentelemetry/core": "2.6.0",
+				"@opentelemetry/resources": "2.6.0",
+				"@opentelemetry/semantic-conventions": "^1.29.0"
+			},
+			"engines": {
+				"node": "^18.19.0 || >=20.6.0"
+			},
+			"peerDependencies": {
+				"@opentelemetry/api": ">=1.3.0 <1.10.0"
+			}
+		},
+		"node_modules/@grafana/faro-web-sdk": {
+			"version": "2.3.1",
+			"resolved": "https://registry.npmjs.org/@grafana/faro-web-sdk/-/faro-web-sdk-2.3.1.tgz",
+			"integrity": "sha512-WMfErl2YSP+CcfcobMpCdK6apX86hc8bymMXsvYLQpBBkQ0KJjIilEQS/YXd+g/cg6F1kwbeweisBKluNNy5sA==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@grafana/faro-core": "^2.3.1",
+				"ua-parser-js": "1.0.41",
+				"web-vitals": "^5.1.0"
+			}
+		},
 		"node_modules/@grpc/grpc-js": {
 			"version": "1.14.3",
 			"resolved": "https://registry.npmjs.org/@grpc/grpc-js/-/grpc-js-1.14.3.tgz",
@@ -7377,6 +7487,32 @@
 				"node": ">=14.17"
 			}
 		},
+		"node_modules/ua-parser-js": {
+			"version": "1.0.41",
+			"resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-1.0.41.tgz",
+			"integrity": "sha512-LbBDqdIC5s8iROCUjMbW1f5dJQTEFB1+KO9ogbvlb3nm9n4YHa5p4KTvFPWvh2Hs8gZMBuiB1/8+pdfe/tDPug==",
+			"funding": [
+				{
+					"type": "opencollective",
+					"url": "https://opencollective.com/ua-parser-js"
+				},
+				{
+					"type": "paypal",
+					"url": "https://paypal.me/faisalman"
+				},
+				{
+					"type": "github",
+					"url": "https://github.com/sponsors/faisalman"
+				}
+			],
+			"license": "MIT",
+			"bin": {
+				"ua-parser-js": "script/cli.js"
+			},
+			"engines": {
+				"node": "*"
+			}
+		},
 		"node_modules/undici-types": {
 			"version": "7.18.2",
 			"resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
@@ -7540,6 +7676,12 @@
 				}
 			}
 		},
+		"node_modules/web-vitals": {
+			"version": "5.2.0",
+			"resolved": "https://registry.npmjs.org/web-vitals/-/web-vitals-5.2.0.tgz",
+			"integrity": "sha512-i2z98bEmaCqSDiHEDu+gHl/dmR4Q+TxFmG3/13KkMO+o8UxQzCqWaDRCiLgEa41nlO4VpXSI0ASa1xWmO9sBlA==",
+			"license": "Apache-2.0"
+		},
 		"node_modules/webidl-conversions": {
 			"version": "3.0.1",
 			"resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",

ui/package.json

@@ -31,6 +31,7 @@
 	"dependencies": {
 		"@aws-sdk/client-s3": "^3.1005.0",
 		"@aws-sdk/s3-request-presigner": "^3.1005.0",
+		"@grafana/faro-web-sdk": "^2.3.1",
 		"@inlang/paraglide-js": "^2.15.1",
 		"@opentelemetry/exporter-logs-otlp-http": "^0.214.0",
 		"@opentelemetry/exporter-trace-otlp-http": "^0.214.0",

ui/src/hooks.client.ts

@@ -1,5 +1,6 @@
 import * as Sentry from '@sentry/sveltekit';
 import { env } from '$env/dynamic/public';
+import { initializeFaro, getWebInstrumentations } from '@grafana/faro-web-sdk';
 
 // Sentry / GlitchTip client-side error tracking.
 // No-op when PUBLIC_GLITCHTIP_DSN is unset (e.g. local dev).
@@ -13,4 +14,21 @@ if (env.PUBLIC_GLITCHTIP_DSN) {
 	});
 }
 
+// Grafana Faro RUM — browser performance monitoring (Web Vitals, traces, errors).
+// No-op when PUBLIC_FARO_COLLECTOR_URL is unset (e.g. local dev).
+if (env.PUBLIC_FARO_COLLECTOR_URL) {
+	initializeFaro({
+		url: env.PUBLIC_FARO_COLLECTOR_URL,
+		app: {
+			name: 'libnovel-ui',
+			version: env.PUBLIC_BUILD_VERSION || 'dev',
+			environment: 'production'
+		},
+		instrumentations: [
+			// Core Web Vitals (LCP, CLS, INP, TTFB, FCP) + JS errors + console
+			...getWebInstrumentations({ captureConsole: false })
+		]
+	});
+}
+
 export const handleError = Sentry.handleErrorWithSentry();

ui/src/lib/audio.svelte.ts

@@ -32,6 +32,8 @@
  * It only runs once per chapter (guarded by nextStatus !== 'none').
  */
 
+import type { Voice } from '$lib/types';
+
 export type AudioStatus = 'idle' | 'loading' | 'generating' | 'ready' | 'error';
 export type NextStatus = 'none' | 'prefetching' | 'prefetched' | 'failed';
 
@@ -50,6 +52,9 @@ class AudioStore {
 	/** Full chapter list for the currently loaded book (number + title). */
 	chapters = $state<{ number: number; title: string }[]>([]);
 
+	/** Available voices (populated by the chapter AudioPlayer on mount). */
+	voices = $state<Voice[]>([]);
+
 	// ── Loading/generation state ────────────────────────────────────────────
 	status = $state<AudioStatus>('idle');
 	audioUrl = $state('');

ui/src/lib/components/AudioPlayer.svelte

@@ -226,6 +226,11 @@
 		audioStore.nextChapter = nextChapter ?? null;
 	});
 
+	// Keep voices in store up to date whenever prop changes.
+	$effect(() => {
+		if (voices.length > 0) audioStore.voices = voices;
+	});
+
 	// Auto-start: if the layout navigated here via auto-next, kick off playback.
 	// We match against the chapter prop so the outgoing chapter's AudioPlayer
 	// (still mounted during the brief navigation window) never reacts to this.
@@ -530,6 +535,7 @@
 		audioStore.bookTitle = bookTitle;
 		audioStore.cover = cover;
 		audioStore.chapters = chapters;
+		if (voices.length > 0) audioStore.voices = voices;
 
 		// Update OS media session (lock screen / notification center).
 		setMediaSession();
@@ -1102,72 +1108,7 @@
 						{formatTime(audioStore.currentTime)} / {formatTime(audioStore.duration)}
 					</span>
 				</div>
-
-				<!-- Auto-next toggle (keep here as useful context) -->
-				{#if nextChapter !== null && nextChapter !== undefined}
-					<Button
-						variant="ghost"
-						size="sm"
-						class={cn('gap-1.5 text-xs flex-shrink-0', audioStore.autoNext ? 'text-(--color-brand) bg-(--color-brand)/15 hover:bg-(--color-brand)/25' : 'text-(--color-muted)')}
-				onclick={() => (audioStore.autoNext = !audioStore.autoNext)}
-					title={audioStore.autoNext ? m.player_auto_next_on() : m.player_auto_next_off()}
-					aria-pressed={audioStore.autoNext}
-				>
-					<svg class="w-3.5 h-3.5" fill="currentColor" viewBox="0 0 24 24">
-						<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
-					</svg>
-					{m.reader_auto_next()}
-				</Button>
-				{/if}
-
-				<!-- Sleep timer -->
-				<Button
-					variant="ghost"
-					size="sm"
-					class={cn('gap-1 text-xs flex-shrink-0', audioStore.sleepUntil || audioStore.sleepAfterChapter ? 'text-(--color-brand) bg-(--color-brand)/15 hover:bg-(--color-brand)/25' : 'text-(--color-muted)')}
-					onclick={cycleSleepTimer}
-					title={audioStore.sleepAfterChapter
-						? 'Stop after this chapter'
-						: audioStore.sleepUntil
-							? `Sleep timer: ${formatSleepRemaining(sleepRemainingSec)} remaining`
-							: 'Sleep timer off'}
-				>
-					<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-						<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/>
-					</svg>
-					{#if audioStore.sleepAfterChapter}
-						End Ch.
-					{:else if audioStore.sleepUntil}
-						{formatSleepRemaining(sleepRemainingSec)}
-					{:else}
-						Sleep
-					{/if}
-				</Button>
 			</div>
-
-			<!-- Next chapter pre-fetch status (only when auto-next is on) -->
-			{#if audioStore.autoNext && nextChapter !== null && nextChapter !== undefined}
-				<div class="mt-2">
-			{#if audioStore.nextStatus === 'prefetching'}
-				<div class="flex items-center gap-2 text-xs text-(--color-muted)">
-					<svg class="w-3 h-3 animate-spin flex-shrink-0" fill="none" viewBox="0 0 24 24">
-						<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
-						<path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z"></path>
-					</svg>
-					<span>{m.reader_ch_preparing({ n: String(nextChapter), percent: String(Math.round(audioStore.nextProgress)) })}</span>
-				</div>
-			{:else if audioStore.nextStatus === 'prefetched'}
-				<p class="text-xs text-(--color-muted) flex items-center gap-1">
-					<svg class="w-3 h-3 text-(--color-brand) flex-shrink-0" fill="currentColor" viewBox="0 0 24 24">
-						<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z"/>
-					</svg>
-					{m.reader_ch_ready({ n: String(nextChapter) })}
-				</p>
-			{:else if audioStore.nextStatus === 'failed'}
-				<p class="text-xs text-(--color-muted) opacity-60">{m.reader_ch_generate_on_nav({ n: String(nextChapter) })}</p>
-			{/if}
-				</div>
-			{/if}
 		{/if}
 
 	{:else if audioStore.active}

ui/src/lib/components/ListeningMode.svelte

@@ -0,0 +1,451 @@
+<script lang="ts">
+	import { audioStore } from '$lib/audio.svelte';
+	import { cn } from '$lib/utils';
+	import type { Voice } from '$lib/types';
+
+	interface Props {
+		/** Called when the user closes the overlay. */
+		onclose: () => void;
+	}
+
+	let { onclose }: Props = $props();
+
+	// Voices come from the store (populated by AudioPlayer on mount/play)
+	const voices = $derived(audioStore.voices);
+	const kokoroVoices = $derived(voices.filter((v) => v.engine === 'kokoro'));
+	const pocketVoices = $derived(voices.filter((v) => v.engine === 'pocket-tts'));
+	const cfaiVoices   = $derived(voices.filter((v) => v.engine === 'cfai'));
+
+	let showVoicePanel = $state(false);
+	let samplePlayingVoice = $state<string | null>(null);
+	let sampleAudio: HTMLAudioElement | null = null;
+
+	function voiceLabel(v: Voice | string): string {
+		if (typeof v === 'string') {
+			const found = voices.find((x) => x.id === v);
+			if (found) return voiceLabel(found);
+			const id = v as string;
+			return id.replace(/_/g, ' ').replace(/\b\w/g, (c) => c.toUpperCase());
+		}
+		const base = v.id.replace(/_/g, ' ').replace(/\b\w/g, (c) => c.toUpperCase());
+		return v.lang !== 'en-us' ? `${base} (${v.lang})` : base;
+	}
+
+	function stopSample() {
+		if (sampleAudio) {
+			sampleAudio.pause();
+			sampleAudio.src = '';
+			sampleAudio = null;
+		}
+		samplePlayingVoice = null;
+	}
+
+	async function playSample(voiceId: string) {
+		if (samplePlayingVoice === voiceId) { stopSample(); return; }
+		stopSample();
+		samplePlayingVoice = voiceId;
+		try {
+			const res = await fetch(`/api/presign/voice-sample?voice=${encodeURIComponent(voiceId)}`);
+			if (!res.ok) { samplePlayingVoice = null; return; }
+			const { url } = (await res.json()) as { url: string };
+			sampleAudio = new Audio(url);
+			sampleAudio.onended = () => stopSample();
+			sampleAudio.onerror = () => stopSample();
+			sampleAudio.play().catch(() => stopSample());
+		} catch {
+			samplePlayingVoice = null;
+		}
+	}
+
+	function selectVoice(voiceId: string) {
+		stopSample();
+		audioStore.voice = voiceId;
+		showVoicePanel = false;
+	}
+
+	// ── Speed ────────────────────────────────────────────────────────────────
+	const SPEED_OPTIONS = [0.75, 1, 1.25, 1.5, 2] as const;
+
+	// ── Sleep timer ──────────────────────────────────────────────────────────
+	const SLEEP_OPTIONS = [15, 30, 45, 60]; // minutes
+
+	let sleepRemainingSec = $derived.by(() => {
+		void audioStore.currentTime; // re-run every second while playing
+		if (!audioStore.sleepUntil) return 0;
+		return Math.max(0, Math.floor((audioStore.sleepUntil - Date.now()) / 1000));
+	});
+
+	function cycleSleepTimer() {
+		if (!audioStore.sleepUntil && !audioStore.sleepAfterChapter) {
+			audioStore.sleepAfterChapter = true;
+		} else if (audioStore.sleepAfterChapter) {
+			audioStore.sleepAfterChapter = false;
+			audioStore.sleepUntil = Date.now() + SLEEP_OPTIONS[0] * 60 * 1000;
+		} else {
+			const remaining = audioStore.sleepUntil - Date.now();
+			const currentMin = Math.round(remaining / 60000);
+			const idx = SLEEP_OPTIONS.findIndex((m) => m >= currentMin);
+			if (idx === -1 || idx === SLEEP_OPTIONS.length - 1) {
+				audioStore.sleepUntil = 0;
+			} else {
+				audioStore.sleepUntil = Date.now() + SLEEP_OPTIONS[idx + 1] * 60 * 1000;
+			}
+		}
+	}
+
+	function formatSleepRemaining(secs: number): string {
+		if (secs <= 0) return 'Off';
+		const m = Math.floor(secs / 60);
+		const s = secs % 60;
+		return m > 0 ? `${m}m${s > 0 ? ` ${s}s` : ''}` : `${s}s`;
+	}
+
+	const sleepLabel = $derived(
+		audioStore.sleepAfterChapter
+			? 'End Ch.'
+			: audioStore.sleepUntil > Date.now()
+				? formatSleepRemaining(sleepRemainingSec)
+				: 'Sleep'
+	);
+
+	// ── Format time ──────────────────────────────────────────────────────────
+	function formatTime(s: number): string {
+		if (!isFinite(s) || s < 0) return '0:00';
+		const m = Math.floor(s / 60);
+		const sec = Math.floor(s % 60);
+		return `${m}:${sec.toString().padStart(2, '0')}`;
+	}
+
+	// ── Playback controls ────────────────────────────────────────────────────
+	function seek(e: Event) {
+		audioStore.seekRequest = Number((e.currentTarget as HTMLInputElement).value);
+	}
+	function skipBack() {
+		audioStore.seekRequest = Math.max(0, audioStore.currentTime - 15);
+	}
+	function skipForward() {
+		audioStore.seekRequest = Math.min(audioStore.duration || 0, audioStore.currentTime + 30);
+	}
+	function togglePlay() {
+		audioStore.toggleRequest++;
+	}
+
+	// Close on Escape
+	$effect(() => {
+		function onKey(e: KeyboardEvent) {
+			if (e.key === 'Escape') {
+				if (showVoicePanel) { showVoicePanel = false; }
+				else { onclose(); }
+			}
+		}
+		window.addEventListener('keydown', onKey);
+		return () => window.removeEventListener('keydown', onKey);
+	});
+</script>
+
+<!-- Full-screen listening mode overlay -->
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+	class="fixed inset-0 z-60 flex flex-col overflow-hidden"
+	style="background: var(--color-surface);"
+>
+	<!-- Blurred cover background -->
+	{#if audioStore.cover}
+		<div
+			class="absolute inset-0 bg-cover bg-center opacity-10 blur-2xl scale-110"
+			style="background-image: url('{audioStore.cover}');"
+			aria-hidden="true"
+		></div>
+	{/if}
+
+	<!-- Header bar -->
+	<div class="relative flex items-center justify-between px-4 py-3 shrink-0">
+		<button
+			type="button"
+			onclick={onclose}
+			class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+			aria-label="Close listening mode"
+		>
+			<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"/>
+			</svg>
+		</button>
+		<span class="text-xs font-semibold text-(--color-muted) uppercase tracking-wider">Now Playing</span>
+		<!-- Voice selector button -->
+		<button
+			type="button"
+			onclick={() => (showVoicePanel = !showVoicePanel)}
+			class={cn(
+				'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-medium border transition-colors',
+				showVoicePanel
+					? 'border-(--color-brand) bg-(--color-brand)/10 text-(--color-brand)'
+					: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+			)}
+		>
+			<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11a7 7 0 01-7 7m0 0a7 7 0 01-7-7m7 7v4m0 0H8m4 0h4m-4-8a3 3 0 01-3-3V5a3 3 0 116 0v6a3 3 0 01-3 3z"/>
+			</svg>
+			<span class="max-w-[80px] truncate">{voiceLabel(audioStore.voice)}</span>
+		</button>
+	</div>
+
+	<!-- Voice panel (inline dropdown below header) -->
+	{#if showVoicePanel && voices.length > 0}
+		<div class="relative mx-4 mb-2 bg-(--color-surface-2) border border-(--color-border) rounded-xl p-3 z-10 overflow-y-auto max-h-56 shrink-0">
+			<div class="flex items-center justify-between mb-2">
+				<p class="text-[10px] font-semibold text-(--color-muted) uppercase tracking-wider">Select Voice</p>
+				<button type="button" onclick={() => { stopSample(); showVoicePanel = false; }} class="text-(--color-muted) hover:text-(--color-text) transition-colors" aria-label="Close voice panel">
+					<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+						<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+					</svg>
+				</button>
+			</div>
+			{#each ([['Kokoro', kokoroVoices], ['Pocket TTS', pocketVoices], ['CF AI', cfaiVoices]] as [string, Voice[]][]) as [label, group]}
+				{#if group.length > 0}
+					<p class="text-[10px] text-(--color-muted) opacity-60 mb-1 mt-2 first:mt-0">{label}</p>
+					<div class="flex flex-wrap gap-1.5">
+						{#each group as v (v.id)}
+							<div class="flex items-center rounded-lg border overflow-hidden text-xs
+								{audioStore.voice === v.id
+									? 'border-(--color-brand) bg-(--color-brand)/10'
+									: 'border-(--color-border) bg-(--color-surface-3)'}">
+								<button
+									type="button"
+									onclick={() => selectVoice(v.id)}
+									class="px-2 py-1 font-medium transition-colors
+										{audioStore.voice === v.id ? 'text-(--color-brand)' : 'text-(--color-muted) hover:text-(--color-text)'}"
+								>{voiceLabel(v)}</button>
+								<button
+									type="button"
+									onclick={(e) => { e.stopPropagation(); playSample(v.id); }}
+									class="px-1.5 py-1 border-l border-(--color-border) transition-colors
+										{samplePlayingVoice === v.id ? 'text-(--color-brand)' : 'text-(--color-muted) hover:text-(--color-text)'}"
+									title={samplePlayingVoice === v.id ? 'Stop sample' : 'Play sample'}
+								>
+									{#if samplePlayingVoice === v.id}
+										<svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24"><path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z"/></svg>
+									{:else}
+										<svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/></svg>
+									{/if}
+								</button>
+							</div>
+						{/each}
+					</div>
+				{/if}
+			{/each}
+		</div>
+	{/if}
+
+	<!-- Scrollable body -->
+	<div class="relative flex-1 overflow-y-auto flex flex-col">
+
+		<!-- Cover art + track info -->
+		<div class="flex flex-col items-center px-8 pt-4 pb-6 shrink-0">
+			{#if audioStore.cover}
+				<img
+					src={audioStore.cover}
+					alt=""
+					class="w-40 h-56 object-cover rounded-xl shadow-2xl mb-5"
+				/>
+			{:else}
+				<div class="w-40 h-56 flex items-center justify-center bg-(--color-surface-2) rounded-xl shadow-2xl mb-5 border border-(--color-border)">
+					<svg class="w-16 h-16 text-(--color-muted)/40" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M18 2H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm-2 14H8v-2h8v2zm0-4H8v-2h8v2zm0-4H8V6h8v2z"/>
+					</svg>
+				</div>
+			{/if}
+
+			<p class="text-base font-bold text-(--color-text) text-center leading-snug">
+				{audioStore.chapterTitle || (audioStore.chapter > 0 ? `Chapter ${audioStore.chapter}` : '')}
+			</p>
+			<p class="text-sm text-(--color-muted) text-center mt-0.5 truncate max-w-full">{audioStore.bookTitle}</p>
+		</div>
+
+		<!-- Seek bar -->
+		<div class="px-6 shrink-0">
+			<input
+				type="range"
+				aria-label="Seek"
+				min="0"
+				max={audioStore.duration || 0}
+				value={audioStore.currentTime}
+				oninput={seek}
+				class="w-full h-1.5 accent-[--color-brand] cursor-pointer block"
+				style="accent-color: var(--color-brand);"
+			/>
+			<div class="flex justify-between text-xs text-(--color-muted) tabular-nums mt-1">
+				<span>{formatTime(audioStore.currentTime)}</span>
+				<span>{formatTime(audioStore.duration)}</span>
+			</div>
+		</div>
+
+		<!-- Transport controls -->
+		<div class="flex items-center justify-center gap-4 px-6 pt-5 pb-2 shrink-0">
+			<!-- Prev chapter -->
+			{#if audioStore.chapter > 1 && audioStore.slug}
+				<a
+					href="/books/{audioStore.slug}/chapters/{audioStore.chapter - 1}"
+					class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+					title="Previous chapter"
+					aria-label="Previous chapter"
+				>
+					<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 6h2v12H6zm3.5 6l8.5 6V6z"/>
+					</svg>
+				</a>
+			{:else}
+				<div class="w-9 h-9"></div>
+			{/if}
+
+			<!-- Skip back 15s -->
+			<button
+				type="button"
+				onclick={skipBack}
+				class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+				aria-label="Skip back 15 seconds"
+				title="Back 15s"
+			>
+				<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M11.99 5V1l-5 5 5 5V7c3.31 0 6 2.69 6 6s-2.69 6-6 6-6-2.69-6-6h-2c0 4.42 3.58 8 8 8s8-3.58 8-8-3.58-8-8-8z"/>
+					<text x="8.5" y="14.5" font-size="5" font-family="sans-serif" font-weight="bold" fill="currentColor">15</text>
+				</svg>
+			</button>
+
+			<!-- Play / Pause -->
+			<button
+				type="button"
+				onclick={togglePlay}
+				class="w-16 h-16 rounded-full bg-(--color-brand) text-(--color-surface) flex items-center justify-center hover:bg-(--color-brand-dim) transition-colors shadow-lg"
+				aria-label={audioStore.isPlaying ? 'Pause' : 'Play'}
+			>
+				{#if audioStore.isPlaying}
+					<svg class="w-7 h-7" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z"/>
+					</svg>
+				{:else}
+					<svg class="w-7 h-7 ml-1" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M8 5v14l11-7z"/>
+					</svg>
+				{/if}
+			</button>
+
+			<!-- Skip forward 30s -->
+			<button
+				type="button"
+				onclick={skipForward}
+				class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+				aria-label="Skip forward 30 seconds"
+				title="Forward 30s"
+			>
+				<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M12 5V1l5 5-5 5V7c-3.31 0-6 2.69-6 6s2.69 6 6 6 6-2.69 6-6h2c0 4.42-3.58 8-8 8s-8-3.58-8-8 3.58-8 8-8z"/>
+					<text x="8.5" y="14.5" font-size="5" font-family="sans-serif" font-weight="bold" fill="currentColor">30</text>
+				</svg>
+			</button>
+
+			<!-- Next chapter -->
+			{#if audioStore.nextChapter !== null && audioStore.slug}
+				<a
+					href="/books/{audioStore.slug}/chapters/{audioStore.nextChapter}"
+					class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+					title="Next chapter"
+					aria-label="Next chapter"
+				>
+					<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
+					</svg>
+				</a>
+			{:else}
+				<div class="w-9 h-9"></div>
+			{/if}
+		</div>
+
+		<!-- Secondary controls: Speed · Auto-next · Sleep -->
+		<div class="flex items-center justify-center gap-3 px-6 py-3 shrink-0">
+			<!-- Speed -->
+			<div class="flex items-center gap-1 bg-(--color-surface-2) rounded-full px-2 py-1 border border-(--color-border)">
+				{#each SPEED_OPTIONS as s}
+					<button
+						type="button"
+						onclick={() => (audioStore.speed = s)}
+						class={cn(
+							'px-2 py-0.5 rounded-full text-xs font-semibold transition-colors',
+							audioStore.speed === s
+								? 'bg-(--color-brand) text-(--color-surface)'
+								: 'text-(--color-muted) hover:text-(--color-text)'
+						)}
+						aria-pressed={audioStore.speed === s}
+					>{s}×</button>
+				{/each}
+			</div>
+
+			<!-- Auto-next -->
+			<button
+				type="button"
+				onclick={() => (audioStore.autoNext = !audioStore.autoNext)}
+				class={cn(
+					'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-semibold border transition-colors',
+					audioStore.autoNext
+						? 'border-(--color-brand) bg-(--color-brand)/15 text-(--color-brand)'
+						: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+				)}
+				aria-pressed={audioStore.autoNext}
+				title={audioStore.autoNext ? 'Auto-next on' : 'Auto-next off'}
+			>
+				<svg class="w-3.5 h-3.5" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
+				</svg>
+				Auto
+				{#if audioStore.autoNext && audioStore.nextStatus === 'prefetching'}
+					<span class="w-1.5 h-1.5 rounded-full bg-(--color-brand) animate-pulse"></span>
+				{:else if audioStore.autoNext && audioStore.nextStatus === 'prefetched'}
+					<span class="w-1.5 h-1.5 rounded-full bg-green-400"></span>
+				{/if}
+			</button>
+
+			<!-- Sleep timer -->
+			<button
+				type="button"
+				onclick={cycleSleepTimer}
+				class={cn(
+					'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-semibold border transition-colors',
+					audioStore.sleepUntil || audioStore.sleepAfterChapter
+						? 'border-(--color-brand) bg-(--color-brand)/15 text-(--color-brand)'
+						: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+				)}
+				title="Sleep timer"
+			>
+				<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/>
+				</svg>
+				{sleepLabel}
+			</button>
+		</div>
+
+		<!-- Chapter list -->
+		{#if audioStore.chapters.length > 0}
+			<div class="mx-4 mb-6 bg-(--color-surface-2) rounded-xl border border-(--color-border) overflow-hidden shrink-0">
+				<p class="text-[10px] font-semibold text-(--color-muted) uppercase tracking-wider px-4 py-2.5 border-b border-(--color-border)">Chapters</p>
+				<div class="overflow-y-auto max-h-64">
+					{#each audioStore.chapters as ch (ch.number)}
+						<a
+							href="/books/{audioStore.slug}/chapters/{ch.number}"
+							onclick={onclose}
+							class="flex items-center gap-3 px-4 py-2.5 text-xs transition-colors hover:bg-(--color-surface-3)
+								{ch.number === audioStore.chapter ? 'text-(--color-brand) font-semibold bg-(--color-brand)/5' : 'text-(--color-muted)'}"
+						>
+							<span class="tabular-nums w-7 shrink-0 text-right opacity-50">{ch.number}</span>
+							<span class="flex-1 truncate">{ch.title || `Chapter ${ch.number}`}</span>
+							{#if ch.number === audioStore.chapter}
+								<svg class="w-3 h-3 shrink-0 text-(--color-brand)" fill="currentColor" viewBox="0 0 24 24">
+									<path d="M8 5v14l11-7z"/>
+								</svg>
+							{/if}
+						</a>
+					{/each}
+				</div>
+			</div>
+		{/if}
+
+	</div>
+</div>

ui/src/lib/paraglide/messages/_index.js

@@ -381,6 +381,7 @@ export * from './admin_nav_logs.js'
 export * from './admin_nav_uptime.js'
 export * from './admin_nav_push.js'
 export * from './admin_nav_gitea.js'
+export * from './admin_nav_grafana.js'
 export * from './admin_scrape_status_idle.js'
 export * from './admin_scrape_full_catalogue.js'
 export * from './admin_scrape_single_book.js'

ui/src/lib/paraglide/messages/admin_nav_grafana.js

@@ -0,0 +1,44 @@
+/* eslint-disable */
+import { getLocale, experimentalStaticLocale } from '../runtime.js';
+
+/** @typedef {import('../runtime.js').LocalizedString} LocalizedString */
+
+/** @typedef {{}} Admin_Nav_GrafanaInputs */
+
+const en_admin_nav_grafana = /** @type {(inputs: Admin_Nav_GrafanaInputs) => LocalizedString} */ () => {
+	return /** @type {LocalizedString} */ (`Grafana`)
+};
+
+const ru_admin_nav_grafana = /** @type {(inputs: Admin_Nav_GrafanaInputs) => LocalizedString} */ () => {
+	return /** @type {LocalizedString} */ (`Grafana`)
+};
+
+const id_admin_nav_grafana = /** @type {(inputs: Admin_Nav_GrafanaInputs) => LocalizedString} */ () => {
+	return /** @type {LocalizedString} */ (`Grafana`)
+};
+
+const pt_admin_nav_grafana = /** @type {(inputs: Admin_Nav_GrafanaInputs) => LocalizedString} */ () => {
+	return /** @type {LocalizedString} */ (`Grafana`)
+};
+
+const fr_admin_nav_grafana = /** @type {(inputs: Admin_Nav_GrafanaInputs) => LocalizedString} */ () => {
+	return /** @type {LocalizedString} */ (`Grafana`)
+};
+
+/**
+* | output |
+* | --- |
+* | "Grafana" |
+*
+* @param {Admin_Nav_GrafanaInputs} inputs
+* @param {{ locale?: "en" | "ru" | "id" | "pt" | "fr" }} options
+* @returns {LocalizedString}
+*/
+export const admin_nav_grafana = /** @type {((inputs?: Admin_Nav_GrafanaInputs, options?: { locale?: "en" | "ru" | "id" | "pt" | "fr" }) => LocalizedString) & import('../runtime.js').MessageMetadata<Admin_Nav_GrafanaInputs, { locale?: "en" | "ru" | "id" | "pt" | "fr" }, {}>} */ ((inputs = {}, options = {}) => {
+	const locale = experimentalStaticLocale ?? options.locale ?? getLocale()
+	if (locale === "en") return en_admin_nav_grafana(inputs)
+	if (locale === "ru") return ru_admin_nav_grafana(inputs)
+	if (locale === "id") return id_admin_nav_grafana(inputs)
+	if (locale === "pt") return pt_admin_nav_grafana(inputs)
+	return fr_admin_nav_grafana(inputs)
+});

ui/src/routes/+layout.svelte

@@ -11,6 +11,7 @@
 	import { cn } from '$lib/utils';
 	import * as m from '$lib/paraglide/messages.js';
 	import { locales, getLocale } from '$lib/paraglide/runtime.js';
+	import ListeningMode from '$lib/components/ListeningMode.svelte';
 
 	let { children, data }: { children: Snippet; data: LayoutData } = $props();
 
@@ -34,6 +35,7 @@
 	// Chapter list drawer state for the mini-player
 	let chapterDrawerOpen = $state(false);
 	let activeChapterEl = $state<HTMLElement | null>(null);
+	let listeningModeOpen = $state(false);
 
 	function setIfActive(node: HTMLElement, isActive: boolean) {
 		if (isActive) activeChapterEl = node;
@@ -287,7 +289,7 @@
 		audioEl.currentTime = Math.min(audioEl.duration || 0, audioEl.currentTime + 30);
 	}
 
-	const speedSteps = [0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0];
+	const speedSteps = [0.75, 1.0, 1.25, 1.5, 2.0];
 
 	function cycleSpeed() {
 		const idx = speedSteps.indexOf(audioStore.speed);
@@ -778,9 +780,10 @@
 
 		<!-- Chapter list drawer (slides up above the mini-bar) -->
 		{#if chapterDrawerOpen && audioStore.chapters.length > 0}
-			<div class="border-b border-(--color-border) bg-(--color-surface) max-h-[32rem] overflow-y-auto">
-				<div class="max-w-6xl mx-auto px-4">
-					<div class="flex items-center justify-between py-2 border-b border-(--color-border) sticky top-0 bg-(--color-surface)">
+			<div class="border-b border-(--color-border) bg-(--color-surface) flex justify-center md:justify-end md:pr-4">
+				<div class="w-full md:w-80 flex flex-col max-h-72">
+					<!-- Sticky header -->
+					<div class="flex items-center justify-between px-4 py-2 border-b border-(--color-border) shrink-0">
 						<span class="text-xs font-semibold text-(--color-muted) uppercase tracking-wider">{m.player_chapters()}</span>
 						<Button
 							variant="ghost"
@@ -794,26 +797,29 @@
 							</svg>
 						</Button>
 					</div>
-					{#each audioStore.chapters as ch (ch.number)}
-						<a
-							use:setIfActive={ch.number === audioStore.chapter}
-							href="/books/{audioStore.slug}/chapters/{ch.number}"
-							onclick={() => (chapterDrawerOpen = false)}
-							class="flex items-center gap-2 py-2 text-xs transition-colors hover:text-(--color-text) {ch.number === audioStore.chapter
-								? 'text-(--color-brand) font-semibold'
-								: 'text-(--color-muted)'}"
-						>
-							<span class="tabular-nums text-(--color-muted) opacity-60 w-8 shrink-0 text-right">
-								{ch.number}
-							</span>
-							<span class="truncate">{ch.title || m.player_chapter_n({ n: String(ch.number) })}</span>
-							{#if ch.number === audioStore.chapter}
-								<svg class="w-3 h-3 shrink-0 text-(--color-brand)" fill="currentColor" viewBox="0 0 24 24">
-									<path d="M8 5v14l11-7z"/>
-								</svg>
-							{/if}
-						</a>
-					{/each}
+					<!-- Scrollable list -->
+					<div class="overflow-y-auto px-4">
+						{#each audioStore.chapters as ch (ch.number)}
+							<a
+								use:setIfActive={ch.number === audioStore.chapter}
+								href="/books/{audioStore.slug}/chapters/{ch.number}"
+								onclick={() => (chapterDrawerOpen = false)}
+								class="flex items-center gap-2 py-2 text-xs transition-colors hover:text-(--color-text) {ch.number === audioStore.chapter
+									? 'text-(--color-brand) font-semibold'
+									: 'text-(--color-muted)'}"
+							>
+								<span class="tabular-nums text-(--color-muted) opacity-60 w-8 shrink-0 text-right">
+									{ch.number}
+								</span>
+								<span class="truncate">{ch.title || m.player_chapter_n({ n: String(ch.number) })}</span>
+								{#if ch.number === audioStore.chapter}
+									<svg class="w-3 h-3 shrink-0 text-(--color-brand)" fill="currentColor" viewBox="0 0 24 24">
+										<path d="M8 5v14l11-7z"/>
+									</svg>
+								{/if}
+							</a>
+						{/each}
+					</div>
 				</div>
 			</div>
 		{/if}
@@ -989,6 +995,21 @@
 				</a>
 			{/if}
 
+			<!-- Headphones: open listening mode -->
+			<Button
+				variant="ghost"
+				size="icon"
+				onclick={() => (listeningModeOpen = true)}
+				title="Listening mode"
+				aria-label="Open listening mode"
+				class="text-(--color-muted) hover:text-(--color-text) flex-shrink-0"
+			>
+				<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 18v-6a9 9 0 0118 0v6"/>
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 19a2 2 0 01-2 2h-1a2 2 0 01-2-2v-3a2 2 0 012-2h3zM3 19a2 2 0 002 2h1a2 2 0 002-2v-3a2 2 0 00-2-2H3z"/>
+				</svg>
+			</Button>
+
 			<!-- Dismiss -->
 			<Button
 				variant="ghost"
@@ -1004,4 +1025,9 @@
 			</Button>
 		</div>
 	</div>
+
+	<!-- Listening mode full-screen overlay -->
+	{#if listeningModeOpen}
+		<ListeningMode onclose={() => (listeningModeOpen = false)} />
+	{/if}
 {/if}

ui/src/routes/admin/+layout.svelte

@@ -19,6 +19,7 @@
 		{ href: 'https://logs.libnovel.cc', label: () => m.admin_nav_logs() },
 		{ href: 'https://uptime.libnovel.cc', label: () => m.admin_nav_uptime() },
 		{ href: 'https://push.libnovel.cc', label: () => m.admin_nav_push() },
+		{ href: 'https://grafana.libnovel.cc', label: () => m.admin_nav_grafana() },
 		{ href: 'https://gitea.kalekber.cc/kamil/libnovel', label: () => m.admin_nav_gitea() }
 	];
 

ui/src/routes/admin/catalogue-tools/+page.svelte

@@ -39,6 +39,9 @@
 	$effect(() => { void imgModel; void numSteps; void width; void height; saveConfig(); });
 
 	// ── Batch covers ──────────────────────────────────────────────────────────────
+	let fromItem = $state(0);
+	let toItem = $state(0);
+	let resumeJobID = $state('');
 	let running = $state(false);
 	let jobID = $state('');
 	let done = $state(0);
@@ -62,6 +65,9 @@
 					num_steps: numSteps || undefined,
 					width: width || undefined,
 					height: height || undefined,
+					from_item: fromItem || undefined,
+					to_item: toItem || undefined,
+					job_id: resumeJobID.trim() || undefined,
 				})
 			});
 			if (!res.ok) {
@@ -172,6 +178,21 @@
 				<input id="height" type="number" bind:value={height} min="0" step="64"
 					class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
 			</div>
+			<div class="space-y-1">
+				<label class="text-xs font-medium text-(--color-muted) uppercase tracking-wide" for="from-item">From <span class="font-normal">(0=start)</span></label>
+				<input id="from-item" type="number" bind:value={fromItem} min="0"
+					class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
+			</div>
+			<div class="space-y-1">
+				<label class="text-xs font-medium text-(--color-muted) uppercase tracking-wide" for="to-item">To <span class="font-normal">(0=end)</span></label>
+				<input id="to-item" type="number" bind:value={toItem} min="0"
+					class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
+			</div>
+			<div class="col-span-2 sm:col-span-4 space-y-1">
+				<label class="text-xs font-medium text-(--color-muted) uppercase tracking-wide" for="resume-job">Resume job ID <span class="font-normal">(leave blank to start fresh)</span></label>
+				<input id="resume-job" type="text" bind:value={resumeJobID} placeholder="optional PB job ID"
+					class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
+			</div>
 		</div>
 
 		<!-- Controls -->

ui/src/routes/admin/image-gen/+page.svelte

@@ -193,6 +193,33 @@
 		prompt = prompt ? `${prompt}\n\nBook description: ${snippet}` : `Book description: ${snippet}`;
 	}
 
+	// ── Auto-prompt ──────────────────────────────────────────────────────────────
+	let autoPrompting = $state(false);
+	let autoPromptError = $state('');
+
+	async function autoGeneratePrompt() {
+		if (!slug.trim() || autoPrompting) return;
+		autoPrompting = true;
+		autoPromptError = '';
+		try {
+			const res = await fetch('/api/admin/image-gen/auto-prompt', {
+				method: 'POST',
+				headers: { 'Content-Type': 'application/json' },
+				body: JSON.stringify({ slug: slug.trim(), type: imageType, chapter: imageType === 'chapter' ? chapter : 0 })
+			});
+			const body = await res.json().catch(() => ({}));
+			if (!res.ok) {
+				autoPromptError = body.error ?? `Error ${res.status}`;
+				return;
+			}
+			prompt = body.prompt ?? '';
+		} catch {
+			autoPromptError = 'Network error.';
+		} finally {
+			autoPrompting = false;
+		}
+	}
+
 	// ── Style presets ────────────────────────────────────────────────────────────
 	const PRESETS_KEY = 'admin_image_gen_presets_v1';
 
@@ -583,8 +610,14 @@
 						Prompt
 					</label>
 					<div class="flex flex-wrap items-center gap-3">
+						{#if slug.trim()}
+							<button onclick={autoGeneratePrompt} disabled={autoPrompting}
+								class="text-xs text-(--color-brand) hover:text-(--color-brand-dim) transition-colors disabled:opacity-50">
+								{autoPrompting ? 'Generating…' : 'Auto-prompt'}
+							</button>
+						{/if}
 						{#if selectedBook?.summary}
-							<button onclick={injectDescription} class="text-xs text-(--color-brand) hover:text-(--color-brand-dim) transition-colors">
+							<button onclick={injectDescription} class="text-xs text-(--color-muted) hover:text-(--color-text) transition-colors">
 								Inject description
 							</button>
 						{/if}
@@ -617,6 +650,9 @@
 					placeholder="Describe the image to generate…"
 					class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-(--color-brand) resize-y"
 				></textarea>
+				{#if autoPromptError}
+					<p class="text-xs text-(--color-danger)">{autoPromptError}</p>
+				{/if}
 
 				<div class="flex gap-2">
 					<input type="text" bind:value={newPresetName} placeholder="Preset name…"

ui/src/routes/admin/text-gen/+page.svelte

@@ -80,6 +80,9 @@
 	let chAC = makeBookAC();
 	let chSlug = $state('');
 	let chPattern = $state(saved.chPattern ?? 'Chapter {n}: {scene}');
+	let chFromChapter = $state(0);
+	let chToChapter = $state(0);
+	let chJobID = $state('');
 	let chGenerating = $state(false);
 	let chError = $state('');
 
@@ -122,6 +125,7 @@
 		chBatchWarnings = [];
 		chApplySuccess = false;
 		chApplyError = '';
+		chJobID = '';
 
 		try {
 			const res = await fetch('/api/admin/text-gen/chapter-names', {
@@ -130,7 +134,9 @@
 				body: JSON.stringify({
 					slug: chSlug.trim(),
 					pattern: chPattern.trim(),
-					model: selectedModel
+					model: selectedModel,
+					from_chapter: chFromChapter || undefined,
+					to_chapter: chToChapter || undefined
 				})
 			});
 
@@ -161,6 +167,7 @@
 					if (!payload) continue;
 
 					let evt: {
+						job_id?: string;
 						batch?: number;
 						total_batches?: number;
 						chapters_done?: number;
@@ -176,6 +183,8 @@
 						continue;
 					}
 
+					if (evt.job_id) chJobID = evt.job_id;
+
 					if (evt.done) {
 						chBatchProgress = `Done — ${evt.total_chapters ?? chProposals.length} chapters`;
 						chGenerating = false;
@@ -579,6 +588,27 @@
 					</p>
 				</div>
 
+				<!-- Range (optional) -->
+				<div class="grid grid-cols-2 gap-3">
+					<div class="space-y-1">
+						<label class="text-xs font-medium text-(--color-muted) uppercase tracking-wide" for="ch-from">
+							From chapter <span class="font-normal">(0=all)</span>
+						</label>
+						<input id="ch-from" type="number" bind:value={chFromChapter} min="0"
+							class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
+					</div>
+					<div class="space-y-1">
+						<label class="text-xs font-medium text-(--color-muted) uppercase tracking-wide" for="ch-to">
+							To chapter <span class="font-normal">(0=all)</span>
+						</label>
+						<input id="ch-to" type="number" bind:value={chToChapter} min="0"
+							class="w-full bg-(--color-surface-2) border border-(--color-border) rounded-lg px-3 py-2 text-(--color-text) text-sm focus:outline-none focus:ring-2 focus:ring-(--color-brand)" />
+					</div>
+				</div>
+				{#if chJobID}
+					<p class="text-xs text-(--color-muted)">Job: <span class="font-mono">{chJobID}</span></p>
+				{/if}
+
 				<button
 					onclick={generateChapterNames}
 					disabled={!chCanGenerate}