Add PostgreSQL + IPFS backend, rename configs to recipes

- Add PostgreSQL database for cache metadata storage with schema for
  cache_items, item_types, pin_reasons, and l2_shares tables
- Add IPFS integration as durable backing store (local cache as hot storage)
- Add postgres and ipfs services to docker-compose.yml
- Update cache_manager to upload to IPFS and track CIDs
- Rename all config references to recipe throughout server.py
- Update API endpoints: /configs/* -> /recipes/*
- Update models: ConfigStatus -> RecipeStatus, ConfigRunRequest -> RecipeRunRequest
- Update UI tabs and pages to show Recipes instead of Configs

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

docker-compose.yml

@@ -12,18 +12,49 @@ services:
       restart_policy:
         condition: on-failure
 
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      - POSTGRES_USER=artdag
+      - POSTGRES_PASSWORD=artdag
+      - POSTGRES_DB=artdag
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    networks:
+      - celery
+    deploy:
+      replicas: 1
+      restart_policy:
+        condition: on-failure
+
+  ipfs:
+    image: ipfs/kubo:latest
+    volumes:
+      - ipfs_data:/data/ipfs
+      - l1_cache:/data/cache:ro  # Read-only access to cache for adding files
+    networks:
+      - celery
+    deploy:
+      replicas: 1
+      restart_policy:
+        condition: on-failure
+
   l1-server:
     image: git.rose-ash.com/art-dag/l1-server:latest
     env_file:
       - .env
     environment:
       - REDIS_URL=redis://redis:6379/5
+      - DATABASE_URL=postgresql://artdag:artdag@postgres:5432/artdag
+      - IPFS_API=/dns/ipfs/tcp/5001
       - CACHE_DIR=/data/cache
       # L2_SERVER and L2_DOMAIN from .env file
     volumes:
       - l1_cache:/data/cache
     depends_on:
       - redis
+      - postgres
+      - ipfs
     networks:
       - celery
       - externalnet
@@ -37,12 +68,16 @@ services:
     command: celery -A celery_app worker --loglevel=info
     environment:
       - REDIS_URL=redis://redis:6379/5
+      - DATABASE_URL=postgresql://artdag:artdag@postgres:5432/artdag
+      - IPFS_API=/dns/ipfs/tcp/5001
       - CACHE_DIR=/data/cache
       - C_FORCE_ROOT=true
     volumes:
       - l1_cache:/data/cache
     depends_on:
       - redis
+      - postgres
+      - ipfs
     networks:
       - celery
     deploy:
@@ -52,6 +87,8 @@ services:
 
 volumes:
   redis_data:
+  postgres_data:
+  ipfs_data:
   l1_cache:
 
 networks: