Adopt typescript-ci composite action in CI workflow

[couimet]

Context

Once couimet/github-actions ships the typescript-ci composite action, this project can replace its custom format/lint/build steps. rangeLink uses pnpm compile instead of pnpm build, so a command override is needed. Custom post-processing (check-todos, coverage extraction, integration tests, PR summary) stays as additional steps.

Acceptance Criteria

• Replace check-formatting custom action call with uses: couimet/github-actions/typescript-ci@main with build-command: pnpm compile
• Keep custom actions: check-no-prerelease-deps, check-todos, run-tests (with per-package filter and coverage extraction)
• Keep integration test matrix job and PR summary comment
• Evaluate adopting guard-versions (enabled by default in typescript-ci; set guard-versions: false if not applicable)
• CI passes all jobs

Depends on: couimet/github-actions shipping typescript-ci

[couimet]

Implementation details

rangeLink is a pnpm workspace with sub-packages under packages/*. It uses pnpm compile instead of pnpm build and has significant custom post-processing.

What changes

Replace the check-formatting custom action call in the test job:

- uses: couimet/github-actions/typescript-ci@main
  with:
    build-command: pnpm compile

The build-command override is the only customization needed. Format and lint defaults (pnpm format, pnpm lint) match.

What stays

These are too project-specific for typescript-ci and remain as separate steps:

• check-no-prerelease-deps
• run-tests (custom action with per-package --filter and coverage stats extraction)
• check-todos
• Integration test matrix (3 modes) with PR summary comments
• fetch-depth: 0 on checkout (needed for check-todos diff)

guard-versions

Evaluate whether pre-release version blocking applies to rangeLink. If yes, keep the default (guard-versions: true). If not, set guard-versions: false.

Full design

See couimet/github-actions#14 (comment) for the complete design rationale.