CLEANUP-2 (#413): convert two actionable TODOs to issue-referenced stubs
- +layout.server.ts:29 → TODO(#453) for dedicated admin stats endpoint
- ChronikRow.svelte: TODO(#454) for commentPreview; keep SECURITY line
as standalone comment (XSS guard stays co-located with the risk)
CLEANUP-3 (#414): add one-line justification comments to both naming
violators — SecurityUtils and GlobalExceptionHandler are both justified
by framework convention; no rename needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>