[plain-thinh-tran]

Fixes PE-1558, Plain T-37358

The Monday schema update now regenerates @team-plain/webhooks from the latest webhook version and writes its changeset, in the same pull request as GraphQL.

Monday schema Update

The Monday schema update is the “Update schema” GitHub Action in this repo. We added it this month and it has run 3 times so far.

Every Monday, it downloads the production GraphQL schema and regenerates the SDK. If anything changed, it writes a changeset, force pushes to a fixed schema/update branch, and opens or updates one PR. We can make the same change for the webhooks schema.

before:  Monday ─▶ graphql update-schema ─▶ PR
         webhooks: manual codegen, whenever someone remembers

after:   Monday ─▶ graphql update-schema ─┐
                ─▶ webhooks update-schema ─┴▶ one PR (+ changeset per package)

---

Note

Low Risk
Changes are CI, codegen, changeset automation, and test maintenance; no production webhook verification or parsing logic is altered beyond keeping tests aligned with the bundled schema version.

Overview
The Monday “Update schema” workflow now also runs @team-plain/webhooks update-schema alongside GraphQL, opens or updates the same schema/update PR when either schema changed, and reflects both packages in the PR title.

@team-plain/webhooks gains an update-schema script (wired in package.json) that runs codegen, detects whether webhook-schema.json changed, writes a changeset (minor when webhookTargetVersion moves, patch for same-version regen—without overwriting an existing changeset), and exposes changed / version to GitHub Actions. Webhook codegen now formats generated JSON/TS with Biome.

Docs (CONTRIBUTING.md) describe the combined weekly flow and recommend update-schema instead of bare codegen for manual webhook updates.

Tests tie fixtures to the committed schema via schemaVersion, and verifyPlainWebhook tests compute HMAC signatures at runtime instead of using fixed hex strings.

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[mpsq]

Nice one, thanks Thinh