chore: standardize workflow names
Make all workflow names consistent and action-oriented:
- Use action verb first (Announce, Auto-label, Build, Check, Clean, Help, Label, Lint, Listen, Rewrite, Scan, Sync, Welcome)
- Keep names concise and descriptive
- Remove unnecessary details from the name
Changes:
- Analyze kernel security (was: Kernel Hardening Analysis)
- Announce merge (was: Announce PR merge to Discord)
- Announce PR (was: Announce PR on Discord for review)
- Auto-label PR (was: Automatic Pull Request Labeling)
- Build PR artifacts (was: Generate Artifacts on PR if...)
- Check PR assets (was: Check new board assets exist...)
- Clean workflow logs (was: Clean Workflow Logs)
- Sync Jira (was: Jira Sync)
- Help forks (was: Forked Helper)
- Label PR on approval (was: PR review labeler)
- Lint scripts (was: Lint on Scripts)
- Listen PR review (was: PR review listener)
- Rewrite kernel configs (was: Rewrite kernel configs - same)
- Scan security (was: Scorecards Security Scan)
- Sync board list (was: Update Board Lists)
- Sync labels (was: Sync Labels from YAML)
- Sync maintainers (was: Sync maintainers status)
- Sync tools (was: Update Tools in Scripts)
- Welcome first-time contributor (was: Welcome first-time issue contributor)
- Welcome first-time PR contributor (was: same - kept as is)