feat: add safety analyzer module for threat detection

Add comprehensive safety analysis system including:
- SafetyAnalyzer for URL, text, and email threat detection
- Threat pattern database with known scam indicators
- SafetyCheckTool and QuickUrlCheckTool for A2 integration
- Desktop UI components (SafetyAlertCard, Safety hooks)
- Store integration with safety slice

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: tensorboy

packages/core/src/index.ts

@@ -401,6 +401,41 @@ export {
   type WebSearchConfig,
 } from './skills/builtin/web-search';
 
+export {
+  SafetyCheckTool,
+  QuickUrlCheckTool,
+  type SafetyCheckConfig,
+} from './skills/builtin/safety-check';
+
+// 安全助手模块 (Safety Assistant)
+export {
+  SafetyAnalyzer,
+  getSafetyAnalyzer,
+  setSafetyAnalyzer,
+  createSafetyAnalyzer,
+  getAllThreatPatterns,
+  getThreatPatternsByCategory,
+  getThreatPatternsByType,
+  THREAT_TYPE_DESCRIPTIONS,
+  RISK_LEVEL_DESCRIPTIONS,
+  URL_THREAT_PATTERNS,
+  TEXT_THREAT_PATTERNS,
+  EMAIL_THREAT_PATTERNS,
+  GENERAL_THREAT_PATTERNS,
+  type ThreatType,
+  type SafetyRiskLevel,
+  type ThreatIndicator,
+  type SafetyAnalysisResult,
+  type GroundingInfo,
+  type GroundingResult,
+  type SafetyCheckInput,
+  type SafetyAnalyzerConfig,
+  type ThreatPattern,
+  type A2UISafetyAlertCard,
+  type KnownScamEntry,
+  type SafetyHistoryEntry,
+} from './safety';
+
 // 人生树模块 (Life Tree)
 export {
   LifeTreeBuilder,

packages/core/src/safety/index.ts

@@ -0,0 +1,48 @@
+/**
+ * Safety Module - 安全助手模块
+ * 你的个人超级安全助手，检测诈骗、钓鱼和其他安全威胁
+ *
+ * 功能:
+ * - URL 安全检查
+ * - 文本内容分析
+ * - 邮件钓鱼检测
+ * - 网络搜索验证 (grounding)
+ * - A2UI 安全警告卡片生成
+ */
+
+// 类型导出
+export type {
+  ThreatType,
+  SafetyRiskLevel,
+  ThreatIndicator,
+  SafetyAnalysisResult,
+  GroundingInfo,
+  GroundingResult,
+  SafetyCheckInput,
+  SafetyAnalyzerConfig,
+  ThreatPattern,
+  A2UISafetyAlertCard,
+  KnownScamEntry,
+  SafetyHistoryEntry,
+} from './types';
+
+// 威胁模式
+export {
+  URL_THREAT_PATTERNS,
+  TEXT_THREAT_PATTERNS,
+  EMAIL_THREAT_PATTERNS,
+  GENERAL_THREAT_PATTERNS,
+  getAllThreatPatterns,
+  getThreatPatternsByCategory,
+  getThreatPatternsByType,
+  THREAT_TYPE_DESCRIPTIONS,
+  RISK_LEVEL_DESCRIPTIONS,
+} from './threat-patterns';
+
+// 安全分析器
+export {
+  SafetyAnalyzer,
+  getSafetyAnalyzer,
+  setSafetyAnalyzer,
+  createSafetyAnalyzer,
+} from './safety-analyzer';