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/handlers/conflicts.go

@@ -392,18 +392,18 @@ func (h *ConflictHandler) applyHighlightResolution(ctx context.Context, mediaIte
 	}
 
 	params := database.UpdateMediaHighlightForSyncParams{
-		ID:                existing.ID,
-		SelectionText:     existing.SelectionText,
-		StartPosition:     existing.StartPosition,
-		EndPosition:       existing.EndPosition,
-		Color:             existing.Color,
-		NoteText:          existing.NoteText,
-		PercentageStart:   existing.PercentageStart,
-		PercentageEnd:     existing.PercentageEnd,
-		EpubcfiStart:      existing.EpubcfiStart,
-		EpubcfiEnd:        existing.EpubcfiEnd,
-		ChapterReference:  existing.ChapterReference,
-		LastModifiedAt:    pgtype.Timestamptz{Time: time.Now(), Valid: true},
+		ID:                 existing.ID,
+		SelectionText:      existing.SelectionText,
+		StartPosition:      existing.StartPosition,
+		EndPosition:        existing.EndPosition,
+		Color:              existing.Color,
+		NoteText:           existing.NoteText,
+		PercentageStart:    existing.PercentageStart,
+		PercentageEnd:      existing.PercentageEnd,
+		EpubcfiStart:       existing.EpubcfiStart,
+		EpubcfiEnd:         existing.EpubcfiEnd,
+		ChapterReference:   existing.ChapterReference,
+		LastModifiedAt:     pgtype.Timestamptz{Time: time.Now(), Valid: true},
 		LastModifiedSource: pgtype.Text{String: "conflict_resolution", Valid: true},
 		DeviceSyncData:     existing.DeviceSyncData,
 		UserID:             userID,
@@ -439,17 +439,17 @@ func (h *ConflictHandler) applyBookmarkResolution(ctx context.Context, mediaItem
 	}
 
 	params := database.UpdateMediaBookmarkForSyncParams{
-		ID:                existing.ID,
-		PageNumber:        existing.PageNumber,
-		ChapterNumber:     existing.ChapterNumber,
-		CfiPosition:       existing.CfiPosition,
-		Title:             existing.Title,
-		Position:          existing.Position,
-		Notes:             existing.Notes,
+		ID:                 existing.ID,
+		PageNumber:         existing.PageNumber,
+		ChapterNumber:      existing.ChapterNumber,
+		CfiPosition:        existing.CfiPosition,
+		Title:              existing.Title,
+		Position:           existing.Position,
+		Notes:              existing.Notes,
 		PercentageLocation: existing.PercentageLocation,
-		EpubcfiLocation:   existing.EpubcfiLocation,
-		ChapterReference:  existing.ChapterReference,
-		LastModifiedAt:    pgtype.Timestamptz{Time: time.Now(), Valid: true},
+		EpubcfiLocation:    existing.EpubcfiLocation,
+		ChapterReference:   existing.ChapterReference,
+		LastModifiedAt:     pgtype.Timestamptz{Time: time.Now(), Valid: true},
 		LastModifiedSource: pgtype.Text{String: "conflict_resolution", Valid: true},
 		DeviceSyncData:     existing.DeviceSyncData,
 		UserID:             userID,