feat: add Goldfish Recap YouTube summary PWA

YouTube subtitles via OpenRouter become persistent, shareable recaps
with timestamp jump links, PIN-protected creation, and Traefik deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

compose.dev.yml

@@ -0,0 +1,14 @@
+services:
+  app:
+    build: .
+    ports:
+      - "8000:8000"
+    environment:
+      - APP_PIN=${APP_PIN:-1234}
+      - JWT_SECRET=${JWT_SECRET:-dev-secret-change-me}
+      - OPENROUTER_API_KEY=${OPENROUTER_API_KEY:-}
+      - OPENROUTER_MODEL=${OPENROUTER_MODEL:-google/gemini-2.5-flash}
+      - DB_PATH=/data/ytrecap.sqlite
+      - APP_URL=http://localhost:8000
+    volumes:
+      - ./data:/data