fix(suggestions): enable combined search, progressive BPM widening, and include db in docker build

.dockerignore

@@ -3,6 +3,5 @@ node_modules
 .git
 .gitignore
 .env
-db
 docs
 *.webm

Dockerfile

@@ -13,6 +13,7 @@ RUN cd server && npm ci --omit=dev
 COPY server/ ./server/
 COPY public/ ./public/
 COPY shared/ ./shared/
+COPY db/ ./db/
 
 # Set ownership and switch to non-root user
 RUN chown -R node:node /app

public/index.html

@@ -151,14 +151,14 @@
     </div>
   </div>
 
-  <script src="../shared/mixing-rules.js"></script>
-  <script src="../shared/color-matrix.js"></script>
-  <script src="../shared/camelot-angle.js"></script>
-  <script src="../shared/camelot-to-musickey.js"></script>
+  <script src="/shared/mixing-rules.js?v=2.0.1"></script>
+  <script src="/shared/color-matrix.js?v=2.0.1"></script>
+  <script src="/shared/camelot-angle.js?v=2.0.1"></script>
+  <script src="/shared/camelot-to-musickey.js?v=2.0.1"></script>
   
-  <script src="wheel.js"></script>
-  <script src="cover.js"></script>
-  <script src="search.js"></script>
-  <script src="app.js"></script>
+  <script src="wheel.js?v=2.0.1"></script>
+  <script src="cover.js?v=2.0.1"></script>
+  <script src="search.js?v=2.0.1"></script>
+  <script src="app.js?v=2.0.1"></script>
 </body>
 </html>

public/search.js

@@ -134,6 +134,8 @@ async function selectTrack(track) {
         key = metaJson.data.key;
         bpm = metaJson.data.bpm;
         tags = metaJson.data.tags || tags;
+        document.getElementById('stat-match').textContent = metaJson.data.is_corrected ? '100%' : (metaJson.data.source === 'postgresql' ? '100%' : 'Online');
+        document.getElementById('stat-source-sub').textContent = metaJson.data.source === 'postgresql' ? (metaJson.data.is_corrected ? 'PostgreSQL (Fix)' : 'PostgreSQL') : 'PostgreSQL (Neu)';
       }
     } catch (e) {
       console.warn('[Search] Metadata fetch failed, using fallback', e);
@@ -205,7 +207,12 @@ async function renderSuggestions(currentKey, currentBpm = 120, artist = '', titl
     const res = await fetch(url);
     const json = await res.json();
 
-    if (json.status !== 'success' || !json.data || json.data.length === 0) {
+    if (json.status !== 'success') {
+      sugContainer.innerHTML = `<div style="color:#D62828;font-size:12px;font-family:monospace;">Fehler beim Laden der Vorschläge: ${escapeHtml(json.error || 'Serverfehler')}</div>`;
+      return;
+    }
+
+    if (!json.data || json.data.length === 0) {
       sugContainer.innerHTML = '<div style="color:var(--text-dim);font-size:12px;font-family:monospace;">Keine passenden Tracks in der Datenbank gefunden. Suche weitere Tracks, um deine Library zu erweitern.</div>';
       return;
     }

server/db.js

@@ -188,7 +188,10 @@ async function searchTracks(queryStr, limit = 10) {
       const res = await getPool().query(
         `SELECT id, title, artist, camelot_key, bpm, music_key, cover_url, is_corrected
          FROM tracks
-         WHERE LOWER(title) LIKE $1 OR LOWER(artist) LIKE $1
+         WHERE LOWER(title) LIKE $1 
+            OR LOWER(artist) LIKE $1
+            OR LOWER(artist || ' ' || title) LIKE $1
+            OR LOWER(title || ' ' || artist) LIKE $1
          ORDER BY is_corrected DESC, play_count DESC
          LIMIT $2`,
         [term, limit]
@@ -202,7 +205,9 @@ async function searchTracks(queryStr, limit = 10) {
   const results = [];
   const q = queryStr.toLowerCase();
   for (const track of memoryTracks.values()) {
-    if (track.title.toLowerCase().includes(q) || track.artist.toLowerCase().includes(q)) {
+    const combined1 = `${track.artist} ${track.title}`.toLowerCase();
+    const combined2 = `${track.title} ${track.artist}`.toLowerCase();
+    if (track.title.toLowerCase().includes(q) || track.artist.toLowerCase().includes(q) || combined1.includes(q) || combined2.includes(q)) {
       results.push(track);
       if (results.length >= limit) break;
     }

server/routes/suggestions.js

@@ -26,13 +26,25 @@ router.get('/', async (req, res) => {
     // 1. Fetch tracks from PostgreSQL within ±6%
     let tracks = await db.getSuggestions(compatibleKeys, minBpm, maxBpm, 10, artist, title);
 
-    // 2. If fewer than 8 tracks, widen BPM range to ±12% to guarantee plenty of suggestions
+    // 2. If fewer than 8 tracks, widen BPM range to ±12%
     if (tracks.length < 8) {
       minBpm = Math.round(currentBpm * 0.88);
       maxBpm = Math.round(currentBpm * 1.12);
       tracks = await db.getSuggestions(compatibleKeys, minBpm, maxBpm, 10, artist, title);
     }
 
+    // 3. If fewer than 5 tracks, widen BPM range to ±20% for smaller libraries
+    if (tracks.length < 5) {
+      minBpm = Math.round(currentBpm * 0.80);
+      maxBpm = Math.round(currentBpm * 1.20);
+      tracks = await db.getSuggestions(compatibleKeys, minBpm, maxBpm, 10, artist, title);
+    }
+
+    // 4. If still empty, fetch any compatible key track (50-220 BPM)
+    if (tracks.length === 0) {
+      tracks = await db.getSuggestions(compatibleKeys, 50, 220, 10, artist, title);
+    }
+
     // 3. Map tracks with compatibility info and colors
     const enriched = tracks.map(t => {
       const ruleIdx = compatibleKeys.indexOf(t.camelot_key);