Review and perform supported Bluesky source deletion

[micahflee]

Parent

• Add full Bluesky platform support with mobile-compatible archives #672

What to build

A Premium user can review, confirm, and perform source management for posts, reposts, likes, bookmarks, chats, and follows while retaining local copies.

Acceptance criteria

• Every category presents an exact eligibility review; unfollow-all has a distinct broad-action warning.
• Free users retain Bluesky save, browse, Cyd Bluesky archive, and local-backup access but cannot start source deletion.
• Initial consent persists with a durable job so retries neither reconfirm each item nor broaden scope.
• Direct AT Protocol operations follow mobile-equivalent eligibility rules and resume idempotently with visible progress/backoff.
• Successful source deletion retains saved records/media and updates source-deletion state.
• Source deletion remains visibly distinct from local deletion.
• Fake-client controller tests verify requests, consent, retry, and retention; UI tests cover Premium gating and confirmations.
• Diagnostics never contain content, media, handles, DIDs, credentials, or local paths.

Blocked by

• Connect and disconnect a Bluesky identity with OAuth #674
• Save and browse public Bluesky records offline #676
• Save and browse Bluesky conversations offline #677

(This was written by an LLM.)