feat: improve ci (#14438)

#### PR Dependency Tree


* **PR #14438** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Refined PR trigger automation to run only on open/reopen/synchronize
events
* Split native CI into platform-specific builds (Linux, Windows, macOS)
for more reliable pipelines
* Added conditional Copilot test gating to run API/E2E tests only when
relevant
* Added conditional PR-title lint skip when edits don't change the title
  * Improved test result uploads and artifact handling for gated flows
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/workflows/pr-title-lint.yml

@@ -16,6 +16,7 @@ jobs:
   check-pull-request-title:
     name: Check pull request title
     runs-on: ubuntu-latest
+    if: ${{ github.event.action != 'edited' || github.event.changes.title != null }}
     steps:
       - uses: actions/checkout@v4
       - name: Setup Node.js