updates to tools and mma skills

.gemini/agents/tier3-worker.md

@@ -17,6 +17,12 @@ tools:
   - discovered_tool_fetch_url
   - activate_skill
   - discovered_tool_run_powershell
+  - discovered_tool_py_find_usages
+  - discovered_tool_py_get_imports
+  - discovered_tool_py_check_syntax
+  - discovered_tool_py_get_hierarchy
+  - discovered_tool_py_get_docstring
+  - discovered_tool_get_tree
 ---
 STRICT SYSTEM DIRECTIVE: You are a stateless Tier 3 Worker (Contributor).
 Your goal is to implement specific code changes or tests based on the provided task.