Phase 3.3: topic sensitivity + Phase 3.4: auth foundation

Phase 3.3 — Session Topic Sensitivity (complete):
- Backend: topic_sensitivity column + session_sensitivity_log, sensitivity service
  (flip with one-way-latch + audit), PATCH /api/shared/chat/sessions/:id/topic,
  topic carried in pairing + extension WS payloads, CC filter + sensitive stats
  + per-mitra sensitive columns on activity page
- client_app: TopicSelectionBottomSheet before pricing, topic flows through
  pairing request, silent WS handler for session_topic_updated
- mitra_app: SensitivityBadge + SensitivityTheme + sensitivityConfigProvider,
  overlay badge + yellow accent, chat screen app-bar toggle with configurable
  confirmation + latch, extension card shows current flag, history + transcript
  yellow theme
- control_center: Sensitivitas Topik settings section, topic filter + column
  with inline audit log, sensitive stats dashboard card, mitra activity
  sensitive columns with QC flag

Phase 3.4 — Self-Managed Auth (foundation only):
- Migration: auth_sessions + otp_requests tables, social identity columns on
  customers, password_hash + lockout on control_center_users, OTP + CC lockout
  app_config keys
- New services: password (bcrypt + complexity), token (JWT HS256 + refresh
  rotation, session_id claim pre-wires future Valkey revocation),
  social-identity (Google + Apple JWKS), OTP (Fazpass stub — real API TBD)
- Constants: AuthProvider + OtpChannel
- Middleware, auth route rewrites, WS auth update, Firebase → FCM isolation
  still pending (next chunk); Fazpass docs + Apple Developer setup still
  required before E2E testing

Docs:
- requirement/phase3.3.md, phase3.3-plan.md, phase3.3-testing.md
- requirement/phase3.4.md, phase3.4-plan.md

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

backend/src/routes/internal/config.routes.js

@@ -7,6 +7,7 @@ import {
   getExtensionTimeoutConfig, setExtensionTimeoutConfig,
   getEarlyEndConfig, setEarlyEndConfig,
   getMitraPingConfig, setMitraPingConfig,
+  getSensitivityConfig, setSensitivityConfig,
 } from '../../services/config.service.js'
 
 const attachCcUser = async (request, reply) => {
@@ -125,6 +126,28 @@ export const internalConfigRoutes = async (app) => {
     return reply.send({ success: true, data: config })
   })
 
+  // --- Phase 3.3: Topic Sensitivity ---
+  app.get('/sensitivity', {
+    preHandler: [authenticate, attachCcUser, requirePermission('config', 'read')],
+  }, async (request, reply) => {
+    const config = await getSensitivityConfig()
+    return reply.send({ success: true, data: config })
+  })
+
+  app.patch('/sensitivity', {
+    preHandler: [authenticate, attachCcUser, requirePermission('config', 'update')],
+  }, async (request, reply) => {
+    const { flip_confirmation_enabled, one_way_latch } = request.body ?? {}
+    if (flip_confirmation_enabled !== undefined && typeof flip_confirmation_enabled !== 'boolean') {
+      return reply.code(422).send({ success: false, error: { code: 'VALIDATION_ERROR', message: 'flip_confirmation_enabled must be a boolean' } })
+    }
+    if (one_way_latch !== undefined && typeof one_way_latch !== 'boolean') {
+      return reply.code(422).send({ success: false, error: { code: 'VALIDATION_ERROR', message: 'one_way_latch must be a boolean' } })
+    }
+    const config = await setSensitivityConfig({ flip_confirmation_enabled, one_way_latch })
+    return reply.send({ success: true, data: config })
+  })
+
   // --- Price Tiers ---
   app.get('/price-tiers', {
     preHandler: [authenticate, attachCcUser, requirePermission('config', 'read')],