s-ui-x-extended v1.0.0-hotfix2

Hotfix for the first stable release. No manual database migration is required.

Fixes

Fixed the stale frontend cache loop after reinstalling the panel. The login page now sends Clear-Site-Data: "cache", and the frontend does a cache-busting reload if it receives Invalid login right after a successful login.
Fixed Mieru inbound generation when some enabled clients do not have config.mieru. Missing per-protocol client config is skipped instead of crashing on a SQL NULL scan.
Kept generated inbound users as an empty array when no valid per-protocol users are found, rather than serializing users as null.
Added missing English and Russian labels for extended protocol editors, including Sudoku, Mieru, MTProxy, TrustTunnel, MASQUE, OpenVPN, providers, VPN, xHTTP, and mKCP fields.
Restored the frontend asset filename convention checked by the release tests: entry files use entry-, chunks use chunk-, styles use style-, and copied assets use asset- prefixes.
Cleared the service linter findings in Doctor, IP certificate storage, and panel self-update code. Managed certificate files, downloaded update artifacts, and pending update markers now use private file permissions.

Checked locally with: