feat(mcp): broker read tools - #7723
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## main #7723 +/- ##
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Add forge/ee/lib/mcp/schemas.js, a shared module of composable zod fragments the platform read tools import instead of redefining entity-id and pagination/search/sort/audit-log query fields in each tool file. - entity-id params: teamId, applicationId, hostedInstanceId (UUID), remoteInstanceId, snapshotId - query fragments composed per route by spreading only the params the backing finder honors: cursorParam/limitParam (basePagination), pageParam, searchQuery, sortParams, auditLogFilters - appendQuery serialises a tool's supported params onto the request URL The module lives one level above tools/ so the tool loader does not register it as a tool module. Closes #7669
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Expose read-only team broker tools: list/get clients, list/get brokers, list topics and get the AsyncAPI schema.
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Summary
Adds read-only MCP tools for the team broker (built-in MQTT broker) and 3rd-party broker surface in
forge/ee/lib/mcp/tools/broker.js:platform_list_broker_clients-GET /api/v1/teams/:teamId/broker/clientsplatform_get_broker_client-GET /api/v1/teams/:teamId/broker/client/:usernameplatform_list_brokers-GET /api/v1/teams/:teamId/brokersplatform_get_broker-GET /api/v1/teams/:teamId/brokers/:brokerIdplatform_list_broker_topics-GET /api/v1/teams/:teamId/brokers/:brokerId/topicsplatform_get_broker_schema-GET /api/v1/teams/:teamId/broker/:brokerId/schemaAll six tools carry
readOnlyHint: true/destructiveHint: falseand none of them return raw broker credentials.Allow-lists the backing scopes in
IMPLICIT_TOKEN_SCOPES['user:expert-mcp'](forge/routes/auth/permissions.js):broker:clients:listbroker:credentials:listbroker:topics:listThis scope is under special review (credential-sensitive category), so only these read tools are proposed here. The credential-issuing endpoints (broker client create/link, client password update, 3rd-party broker registration, raw credential fetch) and the non-credential write/delete surface (topic CRUD, lifecycle, delete client) are intentionally out of scope for this PR.
Closes #7711
Test plan
eslintclean onforge/ee/lib/mcp/tools/broker.jsandforge/routes/auth/permissions.jsforge/ee/routes/teamBroker/index.js,forge/ee/routes/teamBroker/3rdPartyBroker.js, andforge/ee/routes/teamBroker/schema.js