Save and browse Bluesky conversations offline

[micahflee]

Parent

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

What to build

A free user can save conversations and messages and browse them locally without an active connection or live Bluesky URLs.

Acceptance criteria

• Direct authenticated APIs save stable message identities, ordering, captured participants, relationships, attachments, and availability state.
• Required media is local and digest-deduplicated within the account.
• Conversation and message views paginate and work disconnected and offline, representing unavailable attachments explicitly.
• Disabling chat collection affects future saving only.
• Diagnostics exclude message content, participants, identifiers, media, credentials, and paths.
• Controller tests use a fake chat API with real storage; mounted views cover pagination, attachments, offline use, and incompleteness.

Blocked by

• Replace the dormant Bluesky model with isolated local accounts #673
• Save and browse public Bluesky records offline #676

(This was written by an LLM.)