fix: expose and sync status ribbons setting

[Pranjal1423]

Closes #595

This PR resolves issue where toggling the "Show post/page status ribbon" setting in Preferences features did not hide the ribbons on the tiles (Scheduled, Private, Draft, etc.) even after a reload.

File-by-File Changes:

1. src/settings/registry.ts
   • Added the showPostStatusRibbons: boolean property to the public OsSettingsSnapshot interface definition so TypeScript knows it's a valid settings key.
2. src/settings/index.ts
   • Added showPostStatusRibbons to the snapshot object returned by getOsSettingsSnapshot() to ensure the setting's state actually propagates to the public settings snapshot.
3. src/api/facade.ts
   • Updated updateOsSettings to process and map patch.showPostStatusRibbons so changes made from settings context saves persist correctly.
4. src/ui/components/os-tile/os-tile.ts
   • Added a listener for os-settings-save-lifecycle in the tile component's lifecycle (connectedCallback / disconnectedCallback). When a settings save finishes (phase === 'saved'), all active tiles trigger _paint() to hide or show their status ribbons instantly on the screen without needing to close or reload the window.

How to test:

1. Open WP Explorer with scheduled/private/draft content visible.
2. Open Preferences -> Features.
3. Toggle "Show post/page status ribbon" off.
4. The ribbons should immediately vanish from the open folder tiles in real-time.

After Fix

Screen.Recording.2026-08-14.at.5.30.18.PM.mov

[AllTerrainDeveloper]

Nice! Thank you very much @Pranjal1423!