Refactor storage: remove Redis duplication, use proper data tiers

- Recipes: Now content-addressed only (cache + IPFS), removed Redis storage
- Runs: Completed runs stored in PostgreSQL, Redis only for task_id mapping
- Add list_runs_by_actor() to database.py for paginated run queries
- Add list_by_type() to cache_manager for filtering by node_type
- Fix upload endpoint to return size and filename fields
- Fix recipe run endpoint with proper DAG input binding
- Fix get_run_service() dependency to pass database module

Storage architecture:
- Redis: Ephemeral only (sessions, task mappings with TTL)
- PostgreSQL: Permanent records (completed runs, metadata)
- Cache: Content-addressed files (recipes, media, outputs)

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

app/routers/cache.py

@@ -219,7 +219,12 @@ async def upload_content(
     if error:
         raise HTTPException(400, error)
 
-    return {"content_hash": content_hash, "uploaded": True}
+    return {
+        "content_hash": content_hash,
+        "filename": file.filename,
+        "size": len(content),
+        "uploaded": True,
+    }
 
 
 # Media listing endpoint