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/api/prisma/schema.prisma

@@ -337,20 +337,40 @@ enum ApprovalDecision {
 }
 
 model SyncRoute {
-  id            String   @id @default(cuid())
-  tenantId      String
-  tenant        Tenant   @relation(fields: [tenantId], references: [id])
-  sourceGroupId String
-  sourceGroup   Group    @relation("sourceGroup", fields: [sourceGroupId], references: [id])
-  targetGroupId String
-  targetGroup   Group    @relation("targetGroup", fields: [targetGroupId], references: [id])
-  isActive      Boolean  @default(true)
-  createdAt     DateTime @default(now())
+  id             String           @id @default(cuid())
+  tenantId       String
+  tenant         Tenant           @relation(fields: [tenantId], references: [id])
+  sourceGroupId  String
+  sourceGroup    Group            @relation("sourceGroup", fields: [sourceGroupId], references: [id])
+  targetGroupId  String
+  targetGroup    Group            @relation("targetGroup", fields: [targetGroupId], references: [id])
+  isActive       Boolean          @default(true)
+  forwardFormat  ForwardFormat    @default(THREADED)
+  withAttachment Boolean          @default(true)
+  frequency      ForwardFrequency @default(INSTANT)
+  approvalMode   ApprovalMode     @default(MANUAL)
+  createdAt      DateTime         @default(now())
+  updatedAt      DateTime         @updatedAt
+
+  assignedRules  SyncRouteRuleMap[]
 
   @@unique([sourceGroupId, targetGroupId])
   @@index([tenantId])
 }
 
+model SyncRouteRuleMap {
+  id           String     @id @default(cuid())
+  syncRouteId  String
+  syncRoute    SyncRoute  @relation(fields: [syncRouteId], references: [id], onDelete: Cascade)
+  tenantRuleId String
+  tenantRule   TenantRule @relation(fields: [tenantRuleId], references: [id], onDelete: Cascade)
+  createdAt    DateTime   @default(now())
+
+  @@unique([syncRouteId, tenantRuleId])
+  @@index([syncRouteId])
+  @@index([tenantRuleId])
+}
+
 // ============================================================================
 // Group claiming + sharing
 // ============================================================================
@@ -515,6 +535,7 @@ enum RuleMatchType {
   HASHTAG
   PREFIX
   REACTION_EMOJI
+  INTEREST
 }
 
 enum RuleAction {
@@ -524,17 +545,45 @@ enum RuleAction {
   REJECT
 }
 
+enum RuleIntent {
+  POSITIVE
+  NEGATIVE
+}
+
+enum ForwardFormat {
+  THREADED
+  DIGEST
+  SUMMARY
+}
+
+enum ForwardFrequency {
+  INSTANT
+  FIVE_MIN
+  FIFTEEN_MIN
+  ONE_HOUR
+  ONE_DAY
+  SEVEN_DAYS
+}
+
+enum ApprovalMode {
+  MANUAL
+  AUTO
+}
+
 model TenantRule {
-  id         String        @id @default(cuid())
-  tenantId   String
-  tenant     Tenant        @relation(fields: [tenantId], references: [id])
-  matchType  RuleMatchType
-  matchValue String
-  action     RuleAction
-  priority   Int           @default(0)
-  isActive   Boolean       @default(true)
-  createdAt  DateTime      @default(now())
-  updatedAt  DateTime      @updatedAt
+  id                String             @id @default(cuid())
+  tenantId          String
+  tenant            Tenant             @relation(fields: [tenantId], references: [id])
+  matchType         RuleMatchType
+  matchValue        String
+  action            RuleAction
+  ruleIntent        RuleIntent         @default(POSITIVE)
+  priority          Int                @default(0)
+  isActive          Boolean            @default(true)
+  createdAt         DateTime           @default(now())
+  updatedAt         DateTime           @updatedAt
+
+  syncRouteRuleMaps SyncRouteRuleMap[]
 
   @@unique([tenantId, matchType, matchValue])
   @@index([tenantId, isActive])