- Filter Python stdlib modules at scan time to prevent false positives
when the runtime checker fails (e.g. pip:argparse, pip:sys)
- Install pip/npm packages one-by-one instead of batch so partial
success is preserved when one package fails
- Persist missing deps to DB after install via StoreMissingDeps() so
reload reflects actual state instead of stale data
- Use explicit master tenant context in handleInstallDeps for
consistency with rescanAndUpdate()
