Fix recipe listing, effects count, and add nav counts to all pages

- Fix list_by_type to return node_id (IPFS CID) instead of local hash
- Fix effects count on home page (count from _effects/ directory)
- Add nav_counts to all page templates (recipes, effects, runs, media, storage)
- Add editable metadata section to cache/media detail page
- Show more metadata on recipe detail page (ID, IPFS CID, step count)
- Update tests for new list_by_type behavior

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

cache_manager.py

@@ -519,19 +519,20 @@ class L1CacheManager:
 
     def list_by_type(self, node_type: str) -> List[str]:
         """
-        List content hashes of all cached files of a specific type.
+        List CIDs of all cached files of a specific type.
 
         Args:
             node_type: Type to filter by (e.g., "recipe", "upload", "effect")
 
         Returns:
-            List of content hashes
+            List of CIDs (IPFS CID if available, otherwise node_id)
         """
-        hashes = []
+        cids = []
         for entry in self.cache.list_entries():
-            if entry.node_type == node_type and entry.cid:
-                hashes.append(entry.cid)
-        return hashes
+            if entry.node_type == node_type:
+                # Return node_id which is the IPFS CID for uploaded content
+                cids.append(entry.node_id)
+        return cids
 
     # ============ Activity Tracking ============