saveIssuedPdf ran through uniquePath, so whenever two archive calls raced (the fire-and-forget ?save=1 after a save vs. the /file fallback, or two quick saves) the second write landed as <number>_1.pdf - and those copies were invisible to the reader and cleaner (exact-name match), accumulating forever. Now the issued archive writes to the deterministic Vydane/YYYY/MM/<number>.pdf and overwrites (same model as the offers manager), and cleanIssued also sweeps stale <number>_N.pdf duplicates so existing junk self-heals on the next save/delete. Document numbers are digit-only (never contain _), so the suffix match cannot hit a different document. uniquePath remains for received-invoice uploads where name collisions are legitimate.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
