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.

templates/bookshelf_templ.go

@@ -384,7 +384,7 @@ func BookShelf(
 				}
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 37, "</select></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Author</label> <input type=\"text\" name=\"author_filter\" placeholder=\"Filter by author\" class=\"input\" list=\"author-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchAuthorValues($el)\"> <datalist id=\"author-datalist\"></datalist></div><div class=\"relative\"><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Tags</label> <input type=\"text\" name=\"tags_filter\" placeholder=\"Filter by tags\" class=\"input\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchTagValues($el)\" @keydown=\"onTagFilterKeydown($event)\" @blur=\"hideTagDropdown()\"><div x-show=\"showTagDropdown\" x-transition x-cloak class=\"absolute z-50 mt-1 w-full rounded-lg shadow-lg max-h-48 overflow-y-auto\" style=\"background-color: var(--bg-primary); border: 1px solid var(--border);\"><template x-for=\"sug in tagSuggestions\" :key=\"sug.value\"><button type=\"button\" class=\"w-full text-left px-3 py-2 text-sm flex justify-between items-center\" :class=\"tagHighlightIndex === tagSuggestions.indexOf(sug) ? 'opacity-80' : ''\" :style=\"tagHighlightIndex === tagSuggestions.indexOf(sug) ? 'background-color: var(--bg-secondary); color: var(--text-primary);' : 'color: var(--text-primary);'\" @click=\"selectTagSuggestion(sug.value)\"><span x-text=\"sug.value\"></span> <span class=\"text-xs\" style=\"color: var(--text-secondary);\" x-text=\"sug.count + ' books'\"></span></button></template></div></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Series</label> <input type=\"text\" name=\"series_filter\" placeholder=\"Filter by series\" class=\"input\" list=\"series-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchSeriesValues($el)\"> <datalist id=\"series-datalist\"></datalist></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Language</label> <input type=\"text\" name=\"language_filter\" placeholder=\"Filter by language\" class=\"input\" list=\"language-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchLanguageValues($el)\"> <datalist id=\"language-datalist\"></datalist></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Year Range</label><div class=\"flex gap-2\"><input type=\"number\" name=\"year_min\" placeholder=\"From\" class=\"input\"> <input type=\"number\" name=\"year_max\" placeholder=\"To\" class=\"input\"></div></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Cover</label> <input type=\"button\" id=\"has-cover-tristate\" class=\"tristate-btn w-full transition-all duration-300 cursor-pointer flex items-center justify-center gap-2 px-4 py-2 rounded-lg border text-sm\" :class=\"{\n\t\t\t\t\t\t\t\t\t\t\t'state-null': hasCoverState === null,\n\t\t\t\t\t\t\t\t\t\t\t'state-true': hasCoverState === true,\n\t\t\t\t\t\t\t\t\t\t\t'state-false': hasCoverState === false\n\t\t\t\t\t\t\t\t\t\t}\" :value=\"hasCoverState === null ? '○ Any cover' : hasCoverState === true ? '✓ Has cover' : '✗ No cover'\" @click=\"cycleHasCover()\"><template x-if=\"hasCoverState !== null\"><input type=\"hidden\" name=\"has_cover\" :value=\"hasCoverState ? 'true' : 'false'\"></template></div></div><div class=\"sticky bottom-0 px-6 py-4 border-t\" style=\"background-color: var(--bg-secondary); border-color: color-mix(in srgb, var(--text-primary) 7%, transparent);\"><button type=\"submit\" @click=\"filtersOpen = false\" class=\"btn btn-primary w-full\">Apply Filters</button></div></div></div></form><div id=\"books-grid\" class=\"grid grid-cols-2 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6 gap-4\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 37, "</select></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Author</label> <input type=\"text\" name=\"author_filter\" placeholder=\"Filter by author\" class=\"input\" list=\"author-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchAuthorValues($el)\"> <datalist id=\"author-datalist\"></datalist></div><div class=\"relative\"><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Tags</label> <input type=\"text\" name=\"tags_filter\" placeholder=\"Filter by tags\" class=\"input\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchTagValues($el)\" @keydown=\"onTagFilterKeydown($event)\" @blur=\"hideTagDropdown()\"><div x-show=\"showTagDropdown\" x-transition x-cloak class=\"absolute z-50 mt-1 w-full rounded-lg shadow-lg max-h-48 overflow-y-auto\" style=\"background-color: var(--bg-primary); border: 1px solid var(--border);\"><template x-for=\"sug in tagSuggestions\" :key=\"sug.value\"><button type=\"button\" class=\"w-full text-left px-3 py-2 text-sm flex justify-between items-center\" :class=\"tagHighlightIndex === tagSuggestions.indexOf(sug) ? 'opacity-80' : ''\" :style=\"tagHighlightIndex === tagSuggestions.indexOf(sug) ? 'background-color: var(--bg-secondary); color: var(--text-primary);' : 'color: var(--text-primary);'\" @click=\"selectTagSuggestion(sug.value)\"><span x-text=\"sug.value\"></span> <span class=\"text-xs\" style=\"color: var(--text-secondary);\" x-text=\"sug.count + ' books'\"></span></button></template></div></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Series</label> <input type=\"text\" name=\"series_filter\" placeholder=\"Filter by series\" class=\"input\" list=\"series-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchSeriesValues($el)\"> <datalist id=\"series-datalist\"></datalist></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Narrator</label> <input type=\"text\" name=\"narrator_filter\" placeholder=\"Filter by narrator\" class=\"input\" list=\"narrator-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchNarratorValues($el)\"> <datalist id=\"narrator-datalist\"></datalist></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Language</label> <input type=\"text\" name=\"language_filter\" placeholder=\"Filter by language\" class=\"input\" list=\"language-datalist\" @input.debounce.300ms=\"if($el.value.length >= 2) fetchLanguageValues($el)\"> <datalist id=\"language-datalist\"></datalist></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Year Range</label><div class=\"flex gap-2\"><input type=\"number\" name=\"year_min\" placeholder=\"From\" class=\"input\"> <input type=\"number\" name=\"year_max\" placeholder=\"To\" class=\"input\"></div></div><div><label class=\"block text-xs font-semibold uppercase tracking-wide mb-2\" style=\"color: var(--text-secondary)\">Cover</label> <input type=\"button\" id=\"has-cover-tristate\" class=\"tristate-btn w-full transition-all duration-300 cursor-pointer flex items-center justify-center gap-2 px-4 py-2 rounded-lg border text-sm\" :class=\"{\n\t\t\t\t\t\t\t\t\t\t\t'state-null': hasCoverState === null,\n\t\t\t\t\t\t\t\t\t\t\t'state-true': hasCoverState === true,\n\t\t\t\t\t\t\t\t\t\t\t'state-false': hasCoverState === false\n\t\t\t\t\t\t\t\t\t\t}\" :value=\"hasCoverState === null ? '○ Any cover' : hasCoverState === true ? '✓ Has cover' : '✗ No cover'\" @click=\"cycleHasCover()\"><template x-if=\"hasCoverState !== null\"><input type=\"hidden\" name=\"has_cover\" :value=\"hasCoverState ? 'true' : 'false'\"></template></div></div><div class=\"sticky bottom-0 px-6 py-4 border-t\" style=\"background-color: var(--bg-secondary); border-color: color-mix(in srgb, var(--text-primary) 7%, transparent);\"><button type=\"submit\" @click=\"filtersOpen = false\" class=\"btn btn-primary w-full\">Apply Filters</button></div></div></div></form><div id=\"books-grid\" class=\"grid grid-cols-2 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6 gap-4\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -400,7 +400,7 @@ func BookShelf(
 			var templ_7745c5c3_Var18 string
 			templ_7745c5c3_Var18, templ_7745c5c3_Err = templ.JoinStringErrs(errorMessage)
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 275, Col: 59}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 287, Col: 59}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var18))
 			if templ_7745c5c3_Err != nil {
@@ -423,7 +423,7 @@ func BookShelf(
 			var templ_7745c5c3_Var19 string
 			templ_7745c5c3_Var19, templ_7745c5c3_Err = templ.ResolveAttributeValue(fmt.Sprintf("/api/media-items/search?library_id=%s&limit=%d&offset=%d", currentLibraryID, limit, offset-limit))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 284, Col: 126}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 296, Col: 126}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var19)
 			if templ_7745c5c3_Err != nil {
@@ -454,7 +454,7 @@ func BookShelf(
 			var templ_7745c5c3_Var20 string
 			templ_7745c5c3_Var20, templ_7745c5c3_Err = templ.JoinStringErrs(offset/limit + 1)
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 293, Col: 32}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 305, Col: 32}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var20))
 			if templ_7745c5c3_Err != nil {
@@ -467,7 +467,7 @@ func BookShelf(
 			var templ_7745c5c3_Var21 string
 			templ_7745c5c3_Var21, templ_7745c5c3_Err = templ.ResolveAttributeValue(fmt.Sprintf("/api/media-items/search?library_id=%s&limit=%d&offset=%d", currentLibraryID, limit, offset+limit))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 298, Col: 126}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 310, Col: 126}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var21)
 			if templ_7745c5c3_Err != nil {