chore: remove TS sources ahead of AffineScript migration

Deletes the 16 .ts/.tsx source files across the 6 TS-bearing tool packages.
Per the hyperpolymath language policy, AffineScript is the migration target;
the AffineScript port replaces these files (using the modularisation tooling
from the affinescript repo) and is being prepared on a separate branch.

No package.json / tsconfig.json changes here — those will be revised by the
AffineScript port to match the new build pipeline.

Files removed:
- tools/cli/src/cli.ts
- tools/github-action/src/index.ts
- tools/monitoring-api/src/server.ts
- tools/monitoring-api/src/routes/{badge,dashboard,leaderboard,scan,stats,violations}.ts
- tools/stale/packages/core/src/{index.ts, database/arangodb.ts}
- tools/stale/packages/scanner/src/{index.ts, scanner.ts}
- tools/stale/packages/stale/components/react/src/{index.ts, Button/Button.tsx, Modal/Modal.tsx}

Originals remain accessible via git history (main@HEAD~1 prior to this commit).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath