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/progress.go

@@ -5,6 +5,7 @@ import (
 	wsync "bookhoard/internal/sync"
 	"bookhoard/internal/utils"
 	"context"
+	"encoding/json"
 	"errors"
 	"net/http"
 	"strconv"
@@ -148,6 +149,23 @@ type ProgressWithMedia struct {
 	LastUpdated        string    `json:"-"`
 	FormatGroup        string    `json:"format_group"`
 	EstimatedPages     int       `json:"estimated_pages"`
+	// Audiobook whole-book duration (seconds) for H:M:S progress display
+	DurationSeconds float64 `json:"duration_seconds,omitempty"`
+}
+
+// audioDurationFrom pulls duration_seconds from the scan's audio_metadata
+// JSONB (0 when the item isn't audio or hasn't been probed).
+func audioDurationFrom(raw []byte) float64 {
+	if len(raw) == 0 {
+		return 0
+	}
+	var payload struct {
+		DurationSeconds float64 `json:"duration_seconds"`
+	}
+	if json.Unmarshal(raw, &payload) != nil {
+		return 0
+	}
+	return payload.DurationSeconds
 }
 
 // GetAllProgress retrieves all progress for a user with sync source info
@@ -282,7 +300,10 @@ func (h *Handler) GetAllProgressData(c *echo.Context) ([]ProgressWithMedia, erro
 			DeviceName:         deviceName,
 			DeviceType:         deviceName,
 			FormatGroup:        mediaItem.FormatGroup,
-			EstimatedPages:     wsync.EstimatedPages(mediaItem.TotalCharacters.Int64),
+			// Audiobook "current position" needs whole-book duration
+			// (H:M:S display); parsed from the scanner's audio_metadata.
+			DurationSeconds: audioDurationFrom(mediaItem.AudioMetadata),
+			EstimatedPages:  wsync.EstimatedPages(mediaItem.TotalCharacters.Int64),
 		})
 	}