feat: file retry + editable error catalog

[g9shubh]

What's changed

Feature 1 — File Retry

• Added POST /api/v1/files/{id}/retry (Admin only)
• Resets a Failed file back to Queued, keeps FileStepHistory intact
• Updates Transaction counters (failed_count--, processing_count++) and recomputes batch state
• Writes a FILE_RETRY ActivityLog entry for audit trail
• Re-enqueues file into ExtractionQueue for reprocessing
• Frontend: ↺ Retry button on File Details page (visible to Admins on Failed files only)

Feature 2 — Editable Error Catalog

• Added GET /api/v1/error-catalog (all roles)
• Added POST /api/v1/error-catalog (Admin only)
• Added PUT /api/v1/error-catalog/{id} (Admin only)
• Added DELETE /api/v1/error-catalog/{id} (Admin only)
• Frontend: Error Catalog section in Admin page — list, inline edit, add, and delete entries

Notes

• No DB migration needed — both features use existing tables
• ErrorCatalog is global (not tenant-scoped) — intentional
• Fixed test constructor updates for FileDetailsService (new IExtractionQueue + ICurrentUser deps)