feat: Add lint-pr-title workflow

[workos-sdk-automation]

Summary

• Adds a lint-pr-title workflow using amannn/action-semantic-pull-request to enforce conventional commit format on PR titles
• Uses the SDK bot app token (via actions/create-github-app-token) for authentication, consistent with the release-please workflow
• This ensures PR titles follow the conventional commits spec, which is required for release-please to generate correct changelogs and version bumps

Test plan

• Open a PR with a non-conventional title (e.g., "update something") and verify the check fails
• Open a PR with a valid conventional title (e.g., "feat: add feature") and verify the check passes

[greptile-apps]

Greptile Overview

Greptile Summary

Adds a new GitHub Actions workflow (.github/workflows/lint-pr-title.yml) that runs on pull_request_target events and uses a GitHub App token (via actions/create-github-app-token) to run amannn/action-semantic-pull-request, enforcing conventional-commit style PR titles so release-please can generate correct changelogs/version bumps.

This integrates alongside the existing CI and release-please workflows by adding a dedicated PR-title gate/check, without changing build/test behavior.

Confidence Score: 4/5

• This PR is largely safe to merge, with a small but concrete hardening gap in the workflow permissions.
• The change is isolated to a single GitHub Actions workflow and should not affect runtime code. The only issue found is missing explicit minimal permissions, which can leave the workflow running with broader-than-needed token privileges in pull_request_target context.
• .github/workflows/lint-pr-title.yml

Important Files Changed

Filename	Overview
.github/workflows/lint-pr-title.yml	Adds a PR title lint workflow using pull_request_target and a GitHub App token. Main concern: lacks explicit minimal permissions: block, so token permissions may be broader than necessary.

Sequence Diagram

sequenceDiagram
  participant GH as GitHub
  participant WF as lint-pr-title workflow
  participant AG as actions/create-github-app-token
  participant SP as amannn/action-semantic-pull-request

  GH->>WF: pull_request_target (opened/edited/synchronize)
  WF->>AG: Generate GitHub App installation token
  AG-->>WF: token
  WF->>SP: Validate PR title (using token)
  SP-->>GH: Check result (pass/fail)

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[greptile-apps]

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