fix: Reduce watch service CPU usage by increasing reload interval (#458)

Signed-off-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Paul Hernandez <phernandez@users.noreply.github.com>

src/basic_memory/config.py

@@ -122,7 +122,9 @@ class BasicMemoryConfig(BaseSettings):
     )
 
     watch_project_reload_interval: int = Field(
-        default=30, description="Seconds between reloading project list in watch service", gt=0
+        default=300,
+        description="Seconds between reloading project list in watch service. Higher values reduce CPU usage by minimizing watcher restarts. Default 300s (5 min) balances efficiency with responsiveness to new projects.",
+        gt=0,
     )
 
     # update permalinks on move

tests/sync/test_watch_service_reload.py

@@ -85,8 +85,8 @@ async def test_run_handles_no_projects():
         with patch.object(watch_service, "write_status", return_value=None):
             await watch_service.run()
 
-    # Should have slept for 30 seconds when no projects found
-    mock_sleep.assert_called_with(30)
+    # Should have slept for the configured reload interval when no projects found
+    mock_sleep.assert_called_with(config.watch_project_reload_interval)
 
 
 @pytest.mark.asyncio