Release v1.3.0: Multi-source downloads, audio analyzer resilience, mobile improvements

Major Features:
- Multi-source download system (Soulseek/Lidarr with fallback)
- Configurable enrichment speed control (1-5x)
- Mobile touch drag support for seek sliders
- iOS PWA media controls (Control Center, Lock Screen)
- Artist name alias resolution via Last.fm
- Circuit breaker pattern for audio analysis

Critical Fixes:
- Audio analyzer stability (non-ASCII, BrokenProcessPool, OOM)
- Discovery system race conditions and import failures
- Radio decade categorization using originalYear
- LastFM API response normalization
- Mood bucket infinite loop prevention

Security:
- Bull Board admin authentication
- Lidarr webhook signature verification
- JWT token expiration and refresh
- Encryption key validation on startup

Closes #2, #6, #9, #13, #21, #26, #31, #34, #35, #37, #40, #43

backend/prisma/migrations/20251130000000_init/migration.sql

@@ -19,6 +19,7 @@ CREATE TABLE "User" (
     "twoFactorSecret" TEXT,
     "twoFactorRecoveryCodes" TEXT,
     "moodMixParams" JSONB,
+    "tokenVersion" INTEGER NOT NULL DEFAULT 0,
     "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
 
     CONSTRAINT "User_pkey" PRIMARY KEY ("id")
@@ -78,7 +79,7 @@ CREATE TABLE "SystemSettings" (
     "downloadRetryAttempts" INTEGER NOT NULL DEFAULT 3,
     "transcodeCacheMaxGb" INTEGER NOT NULL DEFAULT 10,
     "downloadSource" TEXT NOT NULL DEFAULT 'soulseek',
-    "soulseekFallback" TEXT NOT NULL DEFAULT 'none',
+    "primaryFailureFallback" TEXT NOT NULL DEFAULT 'none',
     "updatedAt" TIMESTAMP(3) NOT NULL,
     "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
 
@@ -826,6 +827,9 @@ CREATE INDEX "DownloadJob_lidarrRef_idx" ON "DownloadJob"("lidarrRef");
 -- CreateIndex
 CREATE INDEX "DownloadJob_artistMbid_idx" ON "DownloadJob"("artistMbid");
 
+-- CreateIndex
+CREATE INDEX "DownloadJob_targetMbid_idx" ON "DownloadJob"("targetMbid");
+
 -- CreateIndex
 CREATE INDEX "ListeningState_userId_idx" ON "ListeningState"("userId");