feat(intelligence): complete migration to Rust backend

- Unify all intelligence modules to use intelligenceClient
- Delete legacy TS implementations (agent-memory, reflection-engine, heartbeat-engine, context-compactor, agent-identity, memory-index)
- Update all consumers to use snake_case backend types
- Remove deprecated llm-integration.test.ts

This eliminates code duplication between frontend and backend, resolves
localStorage limitations, and enables persistent intelligence features.

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

desktop/src/components/HeartbeatConfig.tsx

@@ -26,11 +26,23 @@ import {
   RefreshCw,
 } from 'lucide-react';
 import {
-  HeartbeatEngine,
-  DEFAULT_HEARTBEAT_CONFIG,
+  intelligenceClient,
   type HeartbeatConfig as HeartbeatConfigType,
   type HeartbeatResult,
-} from '../lib/heartbeat-engine';
+  type HeartbeatAlert,
+} from '../lib/intelligence-client';
+
+// === Default Config ===
+
+const DEFAULT_HEARTBEAT_CONFIG: HeartbeatConfigType = {
+  enabled: false,
+  interval_minutes: 30,
+  quiet_hours_start: null,
+  quiet_hours_end: null,
+  notify_channel: 'ui',
+  proactivity_level: 'standard',
+  max_alerts_per_tick: 5,
+};
 
 // === Types ===
 
@@ -309,8 +321,8 @@ export function HeartbeatConfig({ className = '', onConfigChange }: HeartbeatCon
   const handleTestHeartbeat = useCallback(async () => {
     setIsTesting(true);
     try {
-      const engine = new HeartbeatEngine('zclaw-main', config);
-      const result = await engine.tick();
+      await intelligenceClient.heartbeat.init('zclaw-main', config);
+      const result = await intelligenceClient.heartbeat.tick('zclaw-main');
       setLastResult(result);
     } catch (error) {
       console.error('[HeartbeatConfig] Test failed:', error);
@@ -408,12 +420,12 @@ export function HeartbeatConfig({ className = '', onConfigChange }: HeartbeatCon
                     min="5"
                     max="120"
                     step="5"
-                    value={config.intervalMinutes}
-                    onChange={(e) => updateConfig({ intervalMinutes: parseInt(e.target.value) })}
+                    value={config.interval_minutes}
+                    onChange={(e) => updateConfig({ interval_minutes: parseInt(e.target.value) })}
                     className="flex-1 h-2 bg-gray-200 dark:bg-gray-700 rounded-lg appearance-none cursor-pointer accent-pink-500"
                   />
                   <span className="text-sm font-medium text-gray-900 dark:text-gray-100 w-16 text-right">
-                    {config.intervalMinutes} 分钟
+                    {config.interval_minutes} 分钟
                   </span>
                 </div>
               </div>
@@ -428,8 +440,8 @@ export function HeartbeatConfig({ className = '', onConfigChange }: HeartbeatCon
                 </div>
                 <div className="pl-6">
                   <ProactivityLevelSelector
-                    value={config.proactivityLevel}
-                    onChange={(level) => updateConfig({ proactivityLevel: level })}
+                    value={config.proactivity_level}
+                    onChange={(level) => updateConfig({ proactivity_level: level })}
                   />
                 </div>
               </div>
@@ -437,15 +449,15 @@ export function HeartbeatConfig({ className = '', onConfigChange }: HeartbeatCon
               {/* Quiet Hours */}
               <div className="space-y-2">
                 <QuietHoursConfig
-                  start={config.quietHoursStart}
-                  end={config.quietHoursEnd}
-                  enabled={!!config.quietHoursStart}
-                  onStartChange={(time) => updateConfig({ quietHoursStart: time })}
-                  onEndChange={(time) => updateConfig({ quietHoursEnd: time })}
+                  start={config.quiet_hours_start ?? undefined}
+                  end={config.quiet_hours_end ?? undefined}
+                  enabled={!!config.quiet_hours_start}
+                  onStartChange={(time) => updateConfig({ quiet_hours_start: time })}
+                  onEndChange={(time) => updateConfig({ quiet_hours_end: time })}
                   onToggle={(enabled) =>
                     updateConfig({
-                      quietHoursStart: enabled ? '22:00' : undefined,
-                      quietHoursEnd: enabled ? '08:00' : undefined,
+                      quiet_hours_start: enabled ? '22:00' : null,
+                      quiet_hours_end: enabled ? '08:00' : null,
                     })
                   }
                 />
@@ -484,12 +496,12 @@ export function HeartbeatConfig({ className = '', onConfigChange }: HeartbeatCon
                     </span>
                   </div>
                   <div className="text-xs text-gray-500 dark:text-gray-400">
-                    检查了 {lastResult.checkedItems} 项
+                    检查了 {lastResult.checked_items} 项
                     {lastResult.alerts.length > 0 && ` · ${lastResult.alerts.length} 个提醒`}
                   </div>
                   {lastResult.alerts.length > 0 && (
                     <div className="mt-2 space-y-1">
-                      {lastResult.alerts.map((alert, i) => (
+                      {lastResult.alerts.map((alert: HeartbeatAlert, i: number) => (
                         <div
                           key={i}
                           className={`text-xs p-2 rounded ${