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/dashboard.go

@@ -64,7 +64,17 @@ func (h *DashboardHandler) GetSections(c *echo.Context) error {
 		return c.JSON(http.StatusInternalServerError, map[string]string{"error": "Failed to load dashboard sections"})
 	}
 
-	sectionData := BuildSections(sections, libraryID)
+	// Per-type wording: system-collection display swaps on audiobook scope.
+	libraryType := ""
+	if libraryID != "" {
+		if pgLibID, perr := uuid.Parse(libraryID); perr == nil {
+			if lib, lerr := h.db.GetLibrary(c.Request().Context(), pgtype.UUID{Bytes: pgLibID, Valid: true}); lerr == nil {
+				libraryType = lib.TypeName
+			}
+		}
+	}
+
+	sectionData := BuildSections(sections, libraryID, libraryType)
 	sectionData = MarkActiveConflictsSections(c.Request().Context(), h.db, user.ID, sectionData)
 
 	return c.JSON(http.StatusOK, map[string]interface{}{"sections": sectionData})
@@ -168,10 +178,27 @@ func (h *DashboardHandler) RestoreSystemCollection(c *echo.Context) error {
 	return c.JSON(http.StatusOK, map[string]string{"message": "System collection restored to defaults"})
 }
 
-func BuildSections(sections []services.DashboardSection, currentLibraryID string) []SectionData {
+// BuildSections maps dashboard service sections to card data. When the
+// active library is audiobooks, system-collection titles/descriptions
+// swap to the listening wording at display time — the stored names stay
+// generic so restores and settings keep working across library types.
+func BuildSections(sections []services.DashboardSection, currentLibraryID, libraryType string) []SectionData {
 	var result []SectionData
 
+	audioScope := libraryType == "audiobooks"
+
 	for _, ds := range sections {
+		if audioScope && ds.IsSystem {
+			switch ds.Title {
+			case "Continue Reading":
+				ds.Title = "Continue Listening"
+				ds.Description = "Audiobooks you're currently listening to (0 < progress < 1)"
+			case "Recently Read":
+				ds.Title = "Recently Listened"
+				ds.Description = "Audiobooks you've finished (progress >= 1)"
+			}
+		}
+
 		bookCards := make([]BookInfo, len(ds.Items))
 		for i, item := range ds.Items {
 			itemUUID, _ := uuid.FromBytes(item.ID.Bytes[0:16])
@@ -180,6 +207,7 @@ func BuildSections(sections []services.DashboardSection, currentLibraryID string
 				Title:          item.Title,
 				Author:         textToString(item.Author),
 				CoverImagePath: utils.ResolveMediaURL(item.LibraryID, item.CoverImagePath),
+				FormatGroup:    item.FormatGroup,
 			}
 		}