Ship compact durable chat and v57 archive recovery

[0thernet]

Summary

• ship the compact malleable chat surface with durable queueing, steering, attachments, routing, and recovery
• add crash-atomic attachment custody and portable control-plane projection
• enable v57 provider-thread archive recovery with exact admission, containment, terminal sweep, and provider-quiescence authority
• preserve completed sibling provider context across generation containment and successor resume

Validation

• desktop TypeScript typecheck
• ChatService: 170 passed
• ChatPaneStore: 66 passed
• archive gate, router, and AccountService: 126 passed
• v57 journal and file-backed startup recovery: 28 passed
• focused hostile re-audits: approved with no remaining P0/P1 findings

Delivery

• rebased onto the current origin/main release candidate
• production v57 pane archive and Start fresh coordinator enabled
• v57 account-removal coordinator remains deliberately dormant

[vercel]

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Project	Deployment	Actions	Updated (UTC)
hra	Ready	Preview	Aug 19, 2026 4:51pm