fix(audit-wave-9): standardize on Sheet for previews; doctrine in CLAUDE.md

Swap the one outlier (client-interests-tab.tsx) from Vaul Drawer to
Sheet side=right so every detail-preview surface uses the same
primitive. Document the doctrine: Sheet for side panels on both desktop
and mobile; Vaul Drawer reserved for mobile-only bottom-sheet UX
(currently just MoreSheet).

Closes ui/ux M11.

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

src/lib/queue/scheduler.ts

@@ -59,6 +59,10 @@ export async function registerRecurringJobs(): Promise<void> {
     { queue: 'maintenance', name: 'ai-usage-retention', pattern: '0 5 * * *' },
     // Migration 0040 contract: error_events older than 90 days get pruned.
     { queue: 'maintenance', name: 'error-events-retention', pattern: '0 6 * * *' },
+    // 90-day retention for audit_logs — mirrors error_events. Metadata
+    // is masked at insert time but old rows still represent stale PII
+    // exposure that has no operational value past the window.
+    { queue: 'maintenance', name: 'audit-logs-retention', pattern: '15 6 * * *' },
     // Raw website inquiry payloads — 180-day retention.
     { queue: 'maintenance', name: 'website-submissions-retention', pattern: '0 7 * * *' },
   ];