install -d follows a planted ancestor symlink, and a writable parent can rename the managed leaf aside. chromium.theme is user-installed, so only a 0-255 RGB triple becomes a colour.
Chromium managed policy is mandatory for every profile. World-writable
dirs let any local uid plant policy, including force-installed
extensions. Write goes through the omarchy-browser-policy group at 2775
so theme colour still works without other-write.
* Install missing apps when choosing defaults
* Restore Chromium through browser installer
* Trust default app installer status
* Use full conditionals for install paths