docs: Add session debrief about test fixes and MCP tool lesson

debug_gen.py

@@ -0,0 +1,27 @@
+with open("src/orchestrator_pm.py", "r", encoding="utf-8", newline="") as f:
+    content = f.read()
+
+# Add debug to see actual response in generate_tracks
+old = """response = ai_client.send(
+   md_content="", # We pass everything in user_message for clarity
+   user_message=user_message,
+   enable_tools=False,
+   )"""
+
+new = """import sys
+sys.stderr.write(f"[DEBUG generate_tracks] Calling ai_client.send with provider={ai_client._provider}, model={ai_client._model}\\n")
+sys.stderr.flush()
+response = ai_client.send(
+   md_content="", # We pass everything in user_message for clarity
+   user_message=user_message,
+   enable_tools=False,
+   )
+sys.stderr.write(f"[DEBUG generate_tracks] Got response: {response[:200]}\\n")
+sys.stderr.flush()"""
+
+content = content.replace(old, new)
+
+with open("src/orchestrator_pm.py", "w", encoding="utf-8", newline="") as f:
+    f.write(content)
+
+print("Added debug to generate_tracks")