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/api/messages/[id]/approve/route.ts

@@ -3,11 +3,12 @@ import { apiFetch, jsonResponse } from '../../../../_lib/api';
 export const dynamic = 'force-dynamic';
 
 export async function POST(
-  _req: Request,
+  req: Request,
   { params }: { params: Promise<{ id: string }> },
 ): Promise<Response> {
   const { id } = await params;
-  const res = await apiFetch(`/admin/messages/${id}/approve`, { method: 'POST' });
+  const reqBody = await req.text().catch(() => '');
+  const res = await apiFetch(`/admin/messages/${id}/approve`, { method: 'POST', body: reqBody || undefined });
   const body = await res.text();
   let payload: unknown = body;
   try {