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)/settings/rules/page.tsx

@@ -3,9 +3,10 @@ import { apiFetch } from '@/app/_lib/api';
 
 interface RuleData {
   id: string;
-  matchType: 'HASHTAG' | 'PREFIX' | 'REACTION_EMOJI';
+  matchType: 'HASHTAG' | 'PREFIX' | 'REACTION_EMOJI' | 'INTEREST';
   matchValue: string;
   action: 'FLAG' | 'AUTO_APPROVE' | 'SKIP' | 'REJECT';
+  ruleIntent: 'POSITIVE' | 'NEGATIVE';
   priority: number;
   isActive: boolean;
   createdAt: string;