fix: set Windows event loop policy at CLI entry point

Move the WindowsSelectorEventLoopPolicy setting to the very top of
main.py, before any imports. This ensures the policy is set before
any asyncio code is triggered during module imports.

The previous fix in initialization.py was too late - by the time
ensure_initialization() runs, imports have already triggered asyncio
code with the default ProactorEventLoop.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

src/basic_memory/cli/main.py

@@ -1,5 +1,15 @@
 """Main CLI entry point for basic-memory."""  # pragma: no cover
 
+# Set Windows event loop policy BEFORE any imports that might use asyncio.
+# The ProactorEventLoop (Windows default) can crash with "IndexError: pop from
+# an empty deque" during cleanup. SelectorEventLoop is more stable for CLI use.
+import sys  # pragma: no cover
+
+if sys.platform == "win32":  # pragma: no cover
+    import asyncio
+
+    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
+
 from basic_memory.cli.app import app  # pragma: no cover
 
 # Register commands