Mark the deferred Electron startup wiring as the "Faster startup"
highlight next to settings search, and give the settings search note a
screenshot: a new `open-settings-search=<term>` capture action types the
term into the header search and waits for the ranked results.
Guard the manifest tooling with tests that validate the committed
screenshots.manifest.json and keep KNOWN_ACTIONS in step with the
capture navigation action tables.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>