feat(intelligence): add reflection config persistence and proactive personality suggestions

Config Persistence:
- Save reflection config to localStorage
- Load config on startup with fallback defaults
- Auto-sync config changes to backend

Proactive Personality Suggestions (P2):
- Add check_personality_improvement to heartbeat engine
- Detects user correction patterns (啰嗦/简洁, etc.)
- Add check_learning_opportunities to heartbeat engine
- Identifies learning opportunities from conversations
- Both checks generate HeartbeatAlert when thresholds met

These enhancements complete the self-evolution capability chain.

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

desktop/src/components/ReflectionLog.tsx

@@ -37,6 +37,39 @@ import {
   type ImprovementSuggestion,
 } from '../lib/intelligence-client';
 
+// === Config Persistence ===
+
+const REFLECTION_CONFIG_KEY = 'zclaw-reflection-config';
+
+const DEFAULT_CONFIG: ReflectionConfig = {
+  trigger_after_conversations: 5,
+  allow_soul_modification: true,
+  require_approval: true,
+  use_llm: true,
+  llm_fallback_to_rules: true,
+};
+
+function loadConfig(): ReflectionConfig {
+  try {
+    const stored = localStorage.getItem(REFLECTION_CONFIG_KEY);
+    if (stored) {
+      const parsed = JSON.parse(stored);
+      return { ...DEFAULT_CONFIG, ...parsed };
+    }
+  } catch {
+    console.warn('[ReflectionLog] Failed to load config from localStorage');
+  }
+  return DEFAULT_CONFIG;
+}
+
+function saveConfig(config: ReflectionConfig): void {
+  try {
+    localStorage.setItem(REFLECTION_CONFIG_KEY, JSON.stringify(config));
+  } catch {
+    console.warn('[ReflectionLog] Failed to save config to localStorage');
+  }
+}
+
 // === Types ===
 
 interface ReflectionLogProps {
@@ -385,11 +418,12 @@ export function ReflectionLog({
   const [expandedId, setExpandedId] = useState<string | null>(null);
   const [isReflecting, setIsReflecting] = useState(false);
   const [showConfig, setShowConfig] = useState(false);
-  const [config, setConfig] = useState<ReflectionConfig>({
-    trigger_after_conversations: 5,
-    allow_soul_modification: true,
-    require_approval: true,
-  });
+  const [config, setConfig] = useState<ReflectionConfig>(() => loadConfig());
+
+  // Persist config changes
+  useEffect(() => {
+    saveConfig(config);
+  }, [config]);
 
   // Load history and pending proposals
   useEffect(() => {