feat: route-centric rules, approve popup, emoji picker, 5-column sync table

- Schema: SyncRouteRuleMap junction table, ruleIntent on TenantRule,
  ForwardFormat/Frequency/ApprovalMode columns on SyncRoute, INTEREST
  match type
- Worker: remove global AUTO_APPROVE forwarding; per-route rule evaluation
  in ingest processor — POSITIVE rules auto-forward that route, NEGATIVE
  rules block it, fallback to approvalMode
- API: PATCH /routes/:id, rule assign/unassign endpoints, approve now
  accepts targetGroupIds, new GET /messages/:id/routes for popup data
- Web: 5-column route table with settings + rules dialogs, ForwardTarget
  popup with rule-based pre-selection, ruleIntent toggle + emoji dropdown
  (👍/👎 only) + INTEREST type in rules manager

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/app/(chapter)/groups/page.tsx

@@ -22,6 +22,12 @@ interface Route {
   targetGroupId: string;
   sourceGroup: { name: string };
   targetGroup: { name: string };
+  forwardFormat: 'THREADED' | 'DIGEST' | 'SUMMARY';
+  withAttachment: boolean;
+  frequency: 'INSTANT' | 'FIVE_MIN' | 'FIFTEEN_MIN' | 'ONE_HOUR' | 'ONE_DAY' | 'SEVEN_DAYS';
+  approvalMode: 'MANUAL' | 'AUTO';
+  isActive: boolean;
+  assignedRules?: Array<{ tenantRule: { id: string; matchType: string; matchValue: string; ruleIntent: 'POSITIVE' | 'NEGATIVE' } }>;
 }
 
 type FetchResult<T> = { ok: true; data: T } | { ok: false; status: number; error: string };