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/services/media_scanner_audio.go

@@ -42,6 +42,7 @@ type AudioMetadataPayload struct {
 	CodecProfile    string         `json:"codec_profile,omitempty"`
 	BitRate         int64          `json:"bit_rate,omitempty"`
 	ASIN            string         `json:"asin,omitempty"`
+	Abridged        *bool          `json:"abridged,omitempty"`
 	Chapters        []AudioChapter `json:"chapters,omitempty"`
 }
 
@@ -182,14 +183,24 @@ func (s *MediaScanner) enrichAudioMetadata(path string, metadata *MediaMetadata)
 	if payload.ASIN == "" {
 		payload.ASIN = metadata.ASIN
 	}
+
+	// Promote the editorial facts (A2a columns) when the sidecar's audio
+	// payload carries them and the common-field parse left them empty.
+	if len(metadata.Narrators) == 0 && len(payload.Narrators) > 0 {
+		metadata.Narrators = payload.Narrators
+	}
+	if payload.Abridged != nil {
+		metadata.Abridged = *payload.Abridged
+	}
 }
 
 // parseSidecarAudioFields extracts the audio-only fields from a
-// Libation/Audiobookshelf metadata.json into the payload (narrators and
-// the curated chapter list).
+// Libation/Audiobookshelf metadata.json into the payload (narrators,
+// abridged and the curated chapter list).
 func parseSidecarAudioFields(path string, data []byte) *AudioMetadataPayload {
 	var sidecar struct {
 		Narrators []string `json:"narrators"`
+		Abridged  *bool    `json:"abridged"`
 		ASIN      *string  `json:"asin"`
 		Chapters  []struct {
 			Start float64 `json:"start"`
@@ -201,11 +212,12 @@ func parseSidecarAudioFields(path string, data []byte) *AudioMetadataPayload {
 	if err := json.Unmarshal(data, &sidecar); err != nil {
 		return nil
 	}
-	if len(sidecar.Narrators) == 0 && len(sidecar.Chapters) == 0 && sidecar.ASIN == nil {
+	if len(sidecar.Narrators) == 0 && len(sidecar.Chapters) == 0 && sidecar.ASIN == nil && sidecar.Abridged == nil {
 		return nil
 	}
 	payload := &AudioMetadataPayload{
 		Narrators: sidecar.Narrators,
+		Abridged:  sidecar.Abridged,
 	}
 	if sidecar.ASIN != nil {
 		payload.ASIN = strings.TrimSpace(*sidecar.ASIN)