Patch release focused on preview safety and test hygiene.
Highlights:
- safe allowlisted parsing for the Electron wrapper config
- private config permissions for the local Electron install path
- launcher lock timeout with clearer failure messaging
- smoke tests no longer trigger desktop browser windows or notifications
- clearer package messaging for the current fallback-only .deb
Note: the attached .deb still installs the browser fallback utility, not the Electron desktop path.