feat: rebuild iOS app from API audit + new podcast/media service

iOS App (complete rebuild):
- Audited all fitness API endpoints against live responses
- Models match exact API field names (snapshot_ prefixes, UUID strings)
- FoodEntry uses computed properties (foodName, calories, etc.) wrapping snapshot fields
- Flexible Int/Double decoding for all numeric fields
- AI assistant with raw JSON state management (JSONSerialization, not Codable)
- Home dashboard with custom background, frosted glass calorie widget
- Fitness: Today/Templates/Goals/Foods tabs
- Food search with recent + all sections
- Meal sections with colored accent bars, swipe to delete
- 120fps ProMotion, iOS 17+ @Observable

Podcast/Media Service:
- FastAPI backend for podcast RSS + local audiobook folders
- Shows, episodes, playback progress, queue management
- RSS feed fetching with feedparser + ETag support
- Local folder scanning with mutagen for audio metadata
- HTTP Range streaming for local audio files
- Playback events logging (play/pause/seek/complete)
- Reuses brain's PostgreSQL + Redis
- media_ prefixed tables

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/media/docker-compose.yml

@@ -0,0 +1,44 @@
+services:
+  media-api:
+    build:
+      context: .
+      dockerfile: Dockerfile.api
+    container_name: media-api
+    restart: unless-stopped
+    volumes:
+      - /media/yusiboyz/Media/Audiobooks:/audiobooks:ro
+    environment:
+      - DATABASE_URL=postgresql+asyncpg://brain:brain@brain-db:5432/brain
+      - REDIS_URL=redis://brain-redis:6379/0
+      - LOCAL_AUDIO_PATH=/audiobooks
+      - PORT=8400
+      - TZ=${TZ:-America/Chicago}
+    networks:
+      - default
+      - pangolin
+      - brain
+
+  media-worker:
+    build:
+      context: .
+      dockerfile: Dockerfile.worker
+    container_name: media-worker
+    restart: unless-stopped
+    volumes:
+      - /media/yusiboyz/Media/Audiobooks:/audiobooks:ro
+    environment:
+      - DATABASE_URL=postgresql+asyncpg://brain:brain@brain-db:5432/brain
+      - REDIS_URL=redis://brain-redis:6379/0
+      - LOCAL_AUDIO_PATH=/audiobooks
+      - FEED_FETCH_INTERVAL=1800
+      - TZ=${TZ:-America/Chicago}
+    networks:
+      - default
+      - brain
+
+networks:
+  pangolin:
+    external: true
+  brain:
+    name: brain_default
+    external: true