Drop agent.metadata column

[bhaveshpatel640]

Summary

Drop unused agent.metadata - remote identity lives in external_id.

Linear: AGE-2084

Changes

• Add PG/SQLite migrations to drop agent.metadata
• Remove metadata from agent store types, schemas, and implementations
• Update contract/unit tests + changeset

How was this tested?

• pnpm --filter @truefoundry/trueforge exec jest --config jest.unit.config.cjs tests/unit/truefoundry/TrueFoundryAgentStore.test.ts tests/unit/apis/agents.test.ts --no-coverage
• pnpm test:store:local -- tests/db/sqlite/agent-store/contract.test.ts tests/db/postgres/agent-store/contract.test.ts

Checklist

• I have read the contributing guidelines
• pnpm build, pnpm test, pnpm typecheck, pnpm lint:ci, and pnpm format:check pass locally
• Tests added/updated where it makes sense
• No hand-edits to generated code (packages/trueforge-sdk, .github/fern/openapi/openapi.json, docs/openapi.json) — fork PRs omit SDK regen; maintainers regenerate after merge
• Docs / .env.example updated if configuration or behavior changed

---

Note

Medium Risk
Schema migrations alter the agent table on Postgres and SQLite (SQLite table rebuild with FK handling); behavior change is limited because metadata was unused and not on the public API, but deploy order must run migrations before upgraded code.

Overview
Removes the internal agent.metadata jsonb column and all store/API plumbing around it. Remote identity stays on external_id; the public Agent API never exposed metadata.

Postgres adds a migration that drops the column with a short lock timeout. SQLite rebuilds the agent table (STRICT/jsonb constraints) while preserving (tenant_id, name) uniqueness and the partial unique index on (tenant_id, external_id).

AgentRecord / UpdateAgentInput and both agent stores no longer read or write metadata; the empty agentMetadata schema module is deleted. Contract and agents API tests drop metadata patch expectations but still assert PUT rejects metadata in the request body.

^{Reviewed by Cursor Bugbot for commit be8895b. Bugbot is set up for automated code reviews on this repo. Configure here.}

[changeset-bot]

🦋 Changeset detected

Latest commit: be8895b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@truefoundry/trueforge	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR