Merge branch 'main' into develop

Resolve conflicts:
- Keep deleted files from develop (App Router migration)
- Keep develop version of votingPOM.spec.ts test
- Keep develop version of pnpm-workspace.yaml (newer healthchecker)
- Keep develop version of pnpm-lock.yaml

🤖 Generated with [Claude Code](https://claude.com/claude-code

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>