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

frontend/features/settings/components/sections/DownloadPreferencesSection.tsx

@@ -12,6 +12,34 @@ export function DownloadPreferencesSection({
     settings,
     onUpdate,
 }: DownloadPreferencesSectionProps) {
+    // Service configuration detection
+    const isLidarrConfigured =
+        settings.lidarrEnabled === true &&
+        settings.lidarrUrl.trim() !== "" &&
+        settings.lidarrApiKey.trim() !== "";
+
+    const isSoulseekConfigured =
+        settings.soulseekUsername.trim() !== "" &&
+        settings.soulseekPassword.trim() !== "";
+
+    const areBothServicesConfigured = isLidarrConfigured && isSoulseekConfigured;
+    const isDisabled = !areBothServicesConfigured;
+
+    // Dynamic fallback options based on primary source
+    const getFallbackOptions = () => {
+        if (settings.downloadSource === "soulseek") {
+            return [
+                { value: "none", label: "Skip track" },
+                { value: "lidarr", label: "Download full album via Lidarr" },
+            ];
+        } else {
+            return [
+                { value: "none", label: "Skip album" },
+                { value: "soulseek", label: "Try Soulseek for individual tracks" },
+            ];
+        }
+    };
+
     return (
         <SettingsSection
             id="download-preferences"
@@ -20,42 +48,80 @@ export function DownloadPreferencesSection({
         >
             <SettingsRow
                 label="Primary Download Source"
-                description="Choose how to download music for imported playlists"
+                description={
+                    isDisabled
+                        ? "Requires both Soulseek and Lidarr to be configured"
+                        : "Choose how to download music for imported playlists"
+                }
             >
                 <SettingsSelect
                     value={settings.downloadSource || "soulseek"}
                     onChange={(v) =>
-                        onUpdate({ downloadSource: v as "soulseek" | "lidarr" })
+                        onUpdate({
+                            downloadSource: v as "soulseek" | "lidarr",
+                            primaryFailureFallback: "none"
+                        })
                     }
                     options={[
                         { value: "soulseek", label: "Soulseek (Per-track)" },
                         { value: "lidarr", label: "Lidarr (Full albums)" },
                     ]}
+                    disabled={isDisabled}
                 />
             </SettingsRow>
 
-            {settings.downloadSource === "soulseek" && (
-                <SettingsRow
-                    label="When Soulseek Fails"
-                    description="What to do if a track can't be found on Soulseek"
-                >
-                    <SettingsSelect
-                        value={settings.soulseekFallback || "none"}
-                        onChange={(v) =>
-                            onUpdate({
-                                soulseekFallback: v as "none" | "lidarr",
-                            })
-                        }
-                        options={[
-                            { value: "none", label: "Skip track" },
-                            {
-                                value: "lidarr",
-                                label: "Download full album via Lidarr",
-                            },
-                        ]}
-                    />
-                </SettingsRow>
-            )}
+            <SettingsRow
+                label={
+                    settings.downloadSource === "soulseek"
+                        ? "When Soulseek Fails"
+                        : "When Lidarr Fails"
+                }
+                description={
+                    isDisabled
+                        ? "Requires both Soulseek and Lidarr to be configured"
+                        : settings.downloadSource === "soulseek"
+                        ? "What to do if a track can't be found on Soulseek"
+                        : "What to do if an album can't be found on Lidarr"
+                }
+            >
+                <SettingsSelect
+                    value={settings.primaryFailureFallback || "none"}
+                    onChange={(v) =>
+                        onUpdate({
+                            primaryFailureFallback: v as "none" | "lidarr" | "soulseek",
+                        })
+                    }
+                    options={getFallbackOptions()}
+                    disabled={isDisabled}
+                />
+            </SettingsRow>
+
+            <SettingsRow
+                label="Soulseek Concurrent Downloads"
+                description="Number of simultaneous downloads when using Soulseek (1-10)"
+            >
+                <SettingsSelect
+                    value={settings.soulseekConcurrentDownloads?.toString() || "4"}
+                    onChange={(v) =>
+                        onUpdate({
+                            soulseekConcurrentDownloads: parseInt(v),
+                        })
+                    }
+                    options={[
+                        { value: "1", label: "1" },
+                        { value: "2", label: "2" },
+                        { value: "3", label: "3" },
+                        { value: "4", label: "4 (Default)" },
+                        { value: "5", label: "5" },
+                        { value: "6", label: "6" },
+                        { value: "7", label: "7" },
+                        { value: "8", label: "8" },
+                        { value: "9", label: "9" },
+                        { value: "10", label: "10" },
+                    ]}
+                    disabled={!isSoulseekConfigured}
+                />
+            </SettingsRow>
         </SettingsSection>
     );
 }