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feat(mcp): capability generation convergence and automatic rebind - #134
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James3014 merged 1 commit intoSep 13, 2026
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- Introduce SessionConvergenceState and evaluateSessionConvergence to track session vs runtime generation divergence - Introduce evaluateMultiRoleConvergence to detect multi-service role (7677 dev2 vs 7678 dev-c) deployment drift - Register capability_convergence_status in CUTOVER_SAFE_TOOLS and MCP tool registry - Bind SessionGenerationSnapshot and McpServer reference to active transports in McpSessionRegistry - Detect missing tools in tools/call against stale session snapshots and return structured STALE_MCP_SESSION disposition (-32003) - Provide broadcastToolListChanged on running server to notify listChanged-capable MCP clients - Add comprehensive test coverage in deployment-convergence.test.ts, mcp-sessions.test.ts, and capability-generation-convergence.test.ts Closes #133
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Summary
Addresses Issue #133 by resolving the 5-layer capability and generation divergence across:
Changes
src/deployment-convergence.ts: AddedSessionConvergenceState(CURRENT,STALE_SERVER,STALE_CAPABILITY_MANIFEST,STALE_SESSION_CATALOG,RECONNECT_REQUIRED,RECONCILIATION_REQUIRED),SessionGenerationSnapshot,SessionConvergenceEvaluation,evaluateSessionConvergence, andevaluateMultiRoleConvergence.src/mcp-cutover.ts: Added"capability_convergence_status"toCUTOVER_SAFE_TOOLSso that drain / reconcile-only mode does not block convergence queries.src/mcp-sessions.ts:McpSessionRegistrynow records snapshot metadata and server instance references per session (getSnapshot,setSnapshot,getServer,setServer,getAllServers).src/server.ts:capability_convergence_statusMCP tool.SessionGenerationSnapshoton MCP session initialization.tools/call, checks whether missing tools are due to session generation divergence, returning typed error disposition[STALE_MCP_SESSION:<STATE>](code-32003).broadcastToolListChangedtoRunningServerto broadcastnotifications/tools/list_changedto active clients supportinglistChanged.src/deployment-convergence.test.ts,src/mcp-sessions.test.ts, andsrc/capability-generation-convergence.test.ts.Fixes #133.