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feat(mcp): read back thread pin, archive and auto-settle state - #15
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API-14: MCP agents can see a thread's pin, archive, and auto-settle state and can list archived threads. t3_thread_list gains an `archived` input that switches listProjectThreads to the archive location; list items and thread detail now carry `pinned`, `archived`, and `autoSettle`. Read-only; no reorder (the pinned block merges environments, so no server-side order). Gate: 322 tests pass across AgentContextBudget, thread handlers, OrchestratorMcpService(.activity), ThreadManagementService, and the ClaudeAdapterV2 allowlist parity test; server + contracts typecheck clean; mcpToolListJsonBytes 62116 (ceiling 65366).
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Brings fork PRs #15-#26 (MCP read-back and agent tooling) onto dev, which already carries upstream 15fe283. Resolutions: - ThreadManagementService: list archived threads (origin) and keep the side-chat / isListedThreadLineage filter (upstream). - PeerMcpClient: keep undeclared-argument preflight via startSession (origin) and store the session before the first call so it outlives a waiting or cancelled request (upstream pingdotgg#26567); statusFailure covers 401/403/other. - PeerMcpClient.test (add/add): both suites kept; upstream's scripted renew test now accounts for the tools/list discovery request. - PeerForwarding.test, linkOrigin.test: both new mocks kept, grouped in one Layer.mergeAll to stay within pipe's 20-argument limit. - OrchestratorMcpService.activity.test: Effect.succeedSome per upstream lint rule. - agentContextBudget.json: measured values after merge. - No migrations added by origin/dev; no references to renamed symbols. Checks: vp run typecheck clean in apps/server, packages/contracts, packages/shared, packages/client-runtime, apps/web, apps/mobile. vp test run ThreadManagementService.test, src/mcp, src/peer, src/persistence, AgentContextBudget.test: 67 files, 570 passed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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MCP agents could pin, snooze, settle and archive threads but could not read back pin or auto-settle state, and had no way to find archived threads.
t3_thread_listitems gainpinned,archivedandautoSettle;t3_thread_readdetail gainspinnedandautoSettle.t3_thread_listacceptsarchived: trueto list archived threads (existinggetShellSnapshot({ location: "archive" })path). Default stays active threads; the otherlistProjectThreadscaller is unchanged.Tool list: 61,993 → 62,116 bytes (ceiling 65,366). Gate: 322 tests across the budget, MCP service, thread handler, ThreadManagementService and ClaudeAdapterV2 files; server and contracts typecheck clean. Fresh Claude Opus review: APPROVE (67/67 re-run). Known limit: an older linked peer ignores
archivedand returns active threads; non-empty replies fail with the existing "update both environments" error, empty ones read as none.Implemented with GLM-5.3-Flash via Pi; reviewed with Claude Opus 5.5 via Claude Code in T3 Code.
🤖 Generated with Claude Code