fix(memory): add biographer to delegation wrappers (v1.3.1)

- Add delegate_to_biographer to household registry delegation map
- Was returning raw tools which caused Ollama "invalid message content type: nil"
- Add Qdrant host/port to .env.example

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/core/household_registry.py

@@ -223,12 +223,12 @@ class HouseholdRegistry:
             >>> # Returns: [delegate_to_librarian, calculate, datetime, ...]
             >>> # Instead of: [hybrid_search, search_wiki, create_wiki_page, ... (16 tools)]
         """
-        from src.agents.delegation import delegate_to_librarian
+        from src.agents.delegation import delegate_to_librarian, delegate_to_biographer
 
         # Map of expert names to their delegation wrappers
         delegation_wrappers = {
             "librarian": delegate_to_librarian,
-            # Future: "memory": delegate_to_memory,
+            "biographer": delegate_to_biographer,
             # Future: "home_automation": delegate_to_home_automation,
         }