feat(stats): use generic title wording for mixed-source library

The stats dashboard now supports both anime series and YouTube videos
in the same library, so the anime-only copy no longer fits. Rename
user-visible labels ("Active Anime", "Search anime…", "Anime — Per
Day", "Episodes per Anime", "Words In Multiple Anime", etc.) to use
"Title"/"Library" wording that covers either source.

Data-model names (animeId, animeCount, useAnimeLibrary) stay as-is;
this pass only touches strings the user actually reads.

stats/src/components/anime/AnimeTab.tsx

@@ -93,7 +93,7 @@ export function AnimeTab({
       <div className="flex items-center gap-3">
         <input
           type="text"
-          placeholder="Search anime..."
+          placeholder="Search library..."
           value={search}
           onChange={(e) => setSearch(e.target.value)}
           className="flex-1 bg-ctp-surface0 border border-ctp-surface1 rounded-lg px-3 py-2 text-sm text-ctp-text placeholder:text-ctp-overlay2 focus:outline-none focus:border-ctp-blue"
@@ -125,12 +125,12 @@ export function AnimeTab({
           ))}
         </div>
         <div className="text-xs text-ctp-overlay2 shrink-0">
-          {filtered.length} anime · {formatDuration(totalMs)}
+          {filtered.length} titles · {formatDuration(totalMs)}
         </div>
       </div>
 
       {filtered.length === 0 ? (
-        <div className="text-sm text-ctp-overlay2 p-4">No anime found</div>
+        <div className="text-sm text-ctp-overlay2 p-4">No titles found</div>
       ) : (
         <div className={`grid ${GRID_CLASSES[cardSize]} gap-4`}>
           {filtered.map((item) => (

stats/src/components/overview/HeroStats.tsx

@@ -36,7 +36,7 @@ export function HeroStats({ summary, sessions }: HeroStatsProps) {
       />
       <StatCard label="Current Streak" value={`${summary.streakDays}d`} color="text-ctp-peach" />
       <StatCard
-        label="Active Anime"
+        label="Active Titles"
         value={formatNumber(summary.activeAnimeCount)}
         color="text-ctp-mauve"
       />

stats/src/components/overview/TrackingSnapshot.tsx

@@ -71,7 +71,7 @@ export function TrackingSnapshot({
             </div>
           </div>
         </Tooltip>
-        <Tooltip text="Total unique episodes (videos) watched across all anime">
+        <Tooltip text="Total unique videos watched across all titles in your library">
           <div className="rounded-lg bg-ctp-surface1/60 p-3">
             <div className="text-xs uppercase tracking-wide text-ctp-overlay2">Episodes</div>
             <div className="mt-1 text-xl font-semibold font-mono tabular-nums text-ctp-blue">
@@ -79,9 +79,9 @@ export function TrackingSnapshot({
             </div>
           </div>
         </Tooltip>
-        <Tooltip text="Number of anime series fully completed">
+        <Tooltip text="Number of titles fully completed">
           <div className="rounded-lg bg-ctp-surface1/60 p-3">
-            <div className="text-xs uppercase tracking-wide text-ctp-overlay2">Anime</div>
+            <div className="text-xs uppercase tracking-wide text-ctp-overlay2">Titles</div>
             <div className="mt-1 text-xl font-semibold font-mono tabular-nums text-ctp-sapphire">
               {formatNumber(summary.totalAnimeCompleted)}
             </div>

stats/src/components/sessions/SessionRow.tsx

@@ -120,7 +120,7 @@ export function SessionRow({
           }}
           aria-label={`View overview for ${session.canonicalTitle ?? 'Unknown Media'}`}
           className="absolute right-10 top-1/2 -translate-y-1/2 w-5 h-5 rounded border border-ctp-surface2 text-transparent hover:border-ctp-blue/50 hover:text-ctp-blue hover:bg-ctp-blue/10 transition-colors opacity-0 group-hover:opacity-100 focus:opacity-100 flex items-center justify-center"
-          title="View anime overview"
+          title="View in Library"
         >
           {'\u2197'}
         </button>

stats/src/components/trends/TrendsTab.tsx

@@ -221,7 +221,7 @@ export function TrendsTab() {
           type="line"
         />
 
-        <SectionHeader>Anime — Per Day</SectionHeader>
+        <SectionHeader>Library — Per Day</SectionHeader>
         <AnimeVisibilityFilter
           animeTitles={animeTitles}
           hiddenAnime={activeHiddenAnime}
@@ -239,21 +239,21 @@ export function TrendsTab() {
             })
           }
         />
-        <StackedTrendChart title="Episodes per Anime" data={filteredEpisodesPerAnime} />
+        <StackedTrendChart title="Videos per Title" data={filteredEpisodesPerAnime} />
-        <StackedTrendChart title="Watch Time per Anime (min)" data={filteredWatchTimePerAnime} />
+        <StackedTrendChart title="Watch Time per Title (min)" data={filteredWatchTimePerAnime} />
         <StackedTrendChart
-          title="Cards Mined per Anime"
+          title="Cards Mined per Title"
           data={filteredCardsPerAnime}
           colorPalette={cardsMinedStackedColors}
         />
-        <StackedTrendChart title="Words Seen per Anime" data={filteredWordsPerAnime} />
+        <StackedTrendChart title="Words Seen per Title" data={filteredWordsPerAnime} />
-        <StackedTrendChart title="Lookups per Anime" data={filteredLookupsPerAnime} />
+        <StackedTrendChart title="Lookups per Title" data={filteredLookupsPerAnime} />
         <StackedTrendChart
-          title="Lookups/100w per Anime"
+          title="Lookups/100w per Title"
           data={filteredLookupsPerHundredPerAnime}
         />
 
-        <SectionHeader>Anime — Cumulative</SectionHeader>
+        <SectionHeader>Library — Cumulative</SectionHeader>
         <StackedTrendChart title="Watch Time Progress (min)" data={filteredWatchTimeProgress} />
         <StackedTrendChart title="Episodes Progress" data={filteredAnimeProgress} />
         <StackedTrendChart

stats/src/components/vocabulary/CrossAnimeWordsTable.tsx

@@ -72,7 +72,7 @@ export function CrossAnimeWordsTable({
           >
             {'\u25B6'}
           </span>
-          Words In Multiple Anime
+          Words Across Multiple Titles
         </button>
         <div className="flex items-center gap-3">
           {hasKnownData && (
@@ -97,8 +97,8 @@ export function CrossAnimeWordsTable({
       {collapsed ? null : ranked.length === 0 ? (
         <div className="text-xs text-ctp-overlay2 mt-3">
           {hideKnown
-            ? 'All multi-anime words are already known!'
+            ? 'All words that span multiple titles are already known!'
-            : 'No words found across multiple anime.'}
+            : 'No words found across multiple titles.'}
         </div>
       ) : (
         <>
@@ -109,7 +109,7 @@ export function CrossAnimeWordsTable({
                   <th className="text-left py-2 pr-3 font-medium">Word</th>
                   <th className="text-left py-2 pr-3 font-medium">Reading</th>
                   <th className="text-left py-2 pr-3 font-medium w-20">POS</th>
-                  <th className="text-right py-2 pr-3 font-medium w-16">Anime</th>
+                  <th className="text-right py-2 pr-3 font-medium w-16">Titles</th>
                   <th className="text-right py-2 font-medium w-16">Seen</th>
                 </tr>
               </thead>