fix(05-jamtrack): add fallback strategy for package selection

The strict pickMyPackage logic failed when JamTracks only have mp3
packages or packages at different sample rates. The test JamTrack "db"
only has: mp3, null encryption, 48kHz - none of which matched the
search criteria (ogg, jkz, 44kHz).

Implemented a 4-tier fallback strategy:
1. Ideal: ogg + jkz encryption + matching sample rate
2. Fallback 1: ogg + any encryption + matching sample rate
3. Fallback 2: any format + matching sample rate
4. Last resort: first available package (with warning)

This allows the player to work with:
- Demo/test JamTracks that may only have mp3 packages
- JamTracks without encryption
- Sample rate mismatches (44kHz client, 48kHz package)

The warning log helps identify when we're using a non-ideal package.

Removed debug logging as the package structure is now understood.

Fixes "No compatible package found" error for JamTracks without
ideal package configurations.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

jam-ui/src/store/features/mediaSlice.js

@@ -87,31 +87,45 @@ export const downloadJamTrack = createAsyncThunk(
         throw new Error(`Mixdown "${mixdown.name}" has no packages available`);
       }
 
-      // Debug: Log package structure to understand field names
-      console.log('[JamTrack] Available packages for mixdown:', mixdown.name);
-      console.log('[JamTrack] Looking for: file_type=ogg, encrypt_type=jkz, sample_rate=', sampleRate);
-      mixdown.packages.forEach((pkg, idx) => {
-        console.log(`[JamTrack] Package ${idx}:`, {
-          id: pkg.id,
-          file_type: pkg.file_type,
-          fileType: pkg.fileType,
-          encrypt_type: pkg.encrypt_type,
-          encryptType: pkg.encryptType,
-          sample_rate: pkg.sample_rate,
-          sampleRate: pkg.sampleRate
-        });
-      });
+      // pickMyPackage logic with fallback strategy
+      // Preference order:
+      // 1. ogg + jkz encryption + matching sample rate (ideal)
+      // 2. ogg + any encryption + matching sample rate
+      // 3. any format + matching sample rate
+      // 4. any package (last resort)
 
-      // pickMyPackage logic: find compatible package (ogg, jkz, matching sample rate)
-      // Try both snake_case and camelCase field names
-      const compatiblePackage = mixdown.packages.find(pkg =>
-        (pkg.file_type === 'ogg' || pkg.fileType === 'ogg') &&
-        (pkg.encrypt_type === 'jkz' || pkg.encryptType === 'jkz') &&
-        (pkg.sample_rate === sampleRate || pkg.sampleRate === sampleRate)
+      let compatiblePackage = null;
+
+      // Try 1: Ideal package (ogg, jkz, matching sample rate)
+      compatiblePackage = mixdown.packages.find(pkg =>
+        pkg.file_type === 'ogg' &&
+        pkg.encrypt_type === 'jkz' &&
+        pkg.sample_rate === sampleRate
       );
 
+      // Try 2: ogg with any encryption, matching sample rate
       if (!compatiblePackage) {
-        throw new Error(`No compatible package found for sample rate ${sampleRate}kHz (mixdown: ${mixdown.name})`);
+        compatiblePackage = mixdown.packages.find(pkg =>
+          pkg.file_type === 'ogg' &&
+          pkg.sample_rate === sampleRate
+        );
+      }
+
+      // Try 3: Any format with matching sample rate
+      if (!compatiblePackage) {
+        compatiblePackage = mixdown.packages.find(pkg =>
+          pkg.sample_rate === sampleRate
+        );
+      }
+
+      // Try 4: Just use first available package
+      if (!compatiblePackage) {
+        compatiblePackage = mixdown.packages[0];
+        console.warn(`[JamTrack] No package matches sample rate ${sampleRate}kHz, using first available package (${compatiblePackage.file_type}, ${compatiblePackage.sample_rate}kHz)`);
+      }
+
+      if (!compatiblePackage) {
+        throw new Error(`No packages available for mixdown "${mixdown.name}"`);
       }
 
       const packageId = compatiblePackage.id;