feat(audiobooks): A2 — narrator metadata, audio-aware UX, player polish, bookmarks

A2a (metadata round): narrators TEXT[] + narrators_search (tags
pattern: accumulator + GIN pairs) + abridged bool on media_items;
scanner fills from the Libation/ABS sidecar (narrators verbatim,
abridged flag) with audio-payload promotion; editorial fields ride
the real columns while audio_metadata stays scan-derived (duration/
codec/chapters). Detail/edit/save paths carry the fields; the web
edit dialog grows an Audio section (Narrator(s) comma-input, Abridged
toggle, scanned duration read-only); search weights + narrator filter
(word_similarity over narrators_search) + narrator autocomplete added.

A2c (per-media-type wording): copy helpers keyed on format_group —
Listen Now, Mark Complete/Not Complete, Listening Progress, Your
Listening Stats, Time Listening, Time listened (pages tile swapped for
audio), Position H:MM:SS / total H:MM:SS on detail + progress pages
(duration parsed from audio_metadata). Dashboard: system collections
swap to Continue Listening / Recently Listened at DISPLAY time when
the audiobooks library is selected (stored names unchanged; restores
keep working); week card = Listening Time / Sessions / Books Touched;
cover-corner badges identify audiobook (headphones) / comic / manga
cards on mixed grids — books stay unbadged; hover action icon follows
the media type.

A2b (player): the scrubber binds value to the playhead with an explicit
scrub guard (the handle previously froze at its initial max); header
row = reader-style back arrow + Chapter n/total launcher; chapters
open in a floating top-down drawer (current chapter highlighted, page
never shifts); Skip/Speed rows share one label-left layout; honest
wall-clock session accounting (playing-only deltas, paused flush).

A2d (bookmarks): note-bearing time bookmarks ride the existing
media_bookmarks substrate (notes column + sync-aware service already
there) — audio locator convention audio:<seconds>, chapter_number
filled, auto-title '<chapter> — H:MM:SS', capture popover with optional
note, drawer with jump/edit-note/delete. Zero server changes needed.

Verified live on the Libation sample: narrators backfilled by rescan;
PUT edit persisted + overrides detected (narrators, abridged); force
rescan preserved the user edit; reset-to-scanned-of-defaults restored
truth; narrator filter/autocomplete scoped by library; dashboard
listsening wording + badges render; bookmark save with note deduped to
one row.

internal/router/frontend.go

@@ -469,9 +469,22 @@ func registerFrontendRoutes(cfg *Config) {
 		// Get only visible sections for the dashboard display
 		visibleSections := cfg.DashboardService.FilterHiddenCollections(allSections, prefs.HiddenCollections)
 
+		// Active library type drives the per-type wording (A2c): system
+		// collection titles and stat labels swap on audiobooks scope; the
+		// "All libraries" view keeps generic wording.
+		activeLibType := ""
+		if !libRes.IsAll {
+			for _, ld := range libRes.Libraries {
+				if ld.ID == libraryID {
+					activeLibType = ld.TypeValue
+					break
+				}
+			}
+		}
+
 		userPgID := pgtype.UUID{Bytes: userUUID, Valid: true}
-		sectionData := handlers.MarkActiveConflictsSections(c.Request().Context(), cfg.Queries, userPgID, handlers.BuildSections(visibleSections, libraryID))
-		allSectionsData := handlers.BuildSections(allSections, libraryID)
+		sectionData := handlers.MarkActiveConflictsSections(c.Request().Context(), cfg.Queries, userPgID, handlers.BuildSections(visibleSections, libraryID, activeLibType))
+		allSectionsData := handlers.BuildSections(allSections, libraryID, activeLibType)
 
 		// "This week" widget: the user's rolling 7-day reading pulse for
 		// the CURRENTLY SELECTED library (the same resolution the sections
@@ -502,7 +515,7 @@ func registerFrontendRoutes(cfg *Config) {
 		}
 
 		var buf bytes.Buffer
-		err = templates.Dashboard(user, sectionData, allSectionsData, libRes.Libraries, libraryID, prefs.HiddenCollections, limit, week, errorMsg).Render(c.Request().Context(), &buf)
+		err = templates.Dashboard(user, sectionData, allSectionsData, libRes.Libraries, libraryID, prefs.HiddenCollections, limit, week, activeLibType, errorMsg).Render(c.Request().Context(), &buf)
 		if err != nil {
 			return err
 		}
@@ -870,6 +883,15 @@ func registerFrontendRoutes(cfg *Config) {
 			return echo.NewHTTPError(http.StatusInternalServerError, weekErr.Error())
 		}
 		var buf bytes.Buffer
+		widgetLibType := ""
+		if !libRes.IsAll {
+			for _, ld := range libRes.Libraries {
+				if ld.ID == libRes.LibraryID {
+					widgetLibType = ld.TypeValue
+					break
+				}
+			}
+		}
 		err = templates.DashboardWeekWidget(templates.WeekStatsData{
 			WeekMinutes:   weekSvc.WeekMinutes,
 			WeekPages:     weekSvc.WeekPages,
@@ -879,7 +901,7 @@ func registerFrontendRoutes(cfg *Config) {
 			ActiveToday:   weekSvc.ActiveToday,
 			CurrentStreak: weekSvc.CurrentStreak,
 			LibraryID:     libRes.LibraryID,
-		}).Render(c.Request().Context(), &buf)
+		}, widgetLibType).Render(c.Request().Context(), &buf)
 		if err != nil {
 			return err
 		}
@@ -1672,6 +1694,7 @@ func registerFrontendRoutes(cfg *Config) {
 				pgUserID, mediaUUID, user.Timezone); serr == nil && svcStats.SessionCount > 0 {
 				bookStats = &handlers.BookStatsData{
 					TotalMinutes: svcStats.TotalMinutes,
+					TotalSeconds: svcStats.TotalSeconds,
 					TotalPages:   svcStats.TotalPages,
 					SessionCount: svcStats.SessionCount,
 					MaxProgress:  svcStats.MaxProgress,