feat: MetonaAI Desktop 初始项目

- Electron + React + TypeScript 架构 - 三栏布局: Sidebar | ChatPanel | DetailPanel - 9 个内置工具 (文件系统/网络/记忆/命令) - SQLite 持久化 (better-sqlite3) - MUI 暗色/亮色主题系统 - Agent Loop ReAct 状态机引擎 - DeepSeek / Agnes AI / Ollama Provider 适配器 - MCP 协议集成 - 系统托盘 + 全局快捷键 - Tailwind CSS v4 + Tailwind Merge - 修复: Sidebar 缺失 TextField 导入导致黑屏
2026-06-27 21:33:27 +08:00
commit 1d185db6b3
109 changed files with 39155 additions and 0 deletions
@@ -0,0 +1,85 @@
+/**
+ * Policy Engine — 权限策略引擎
+ *
+ * 三级权限模型：Read / Write / External Action
+ *
+ * @see docs/生产级通用 AI Agent 智能体桌面应用：完整设计与构建指南.html — 第十章
+ */
+
+export enum PermissionLevel {
+  READ = 'read',
+  WRITE = 'write',
+  EXTERNAL_ACTION = 'external',
+}
+
+export interface PermissionPolicy {
+  toolName: string;
+  requiredLevel: PermissionLevel;
+  allowedPatterns?: RegExp[];
+  deniedPatterns?: RegExp[];
+  maxFrequency?: number;
+  requireConfirmation?: boolean;
+}
+
+export const DEFAULT_POLICIES: PermissionPolicy[] = [
+  { toolName: 'read_file', requiredLevel: PermissionLevel.READ, deniedPatterns: [/\/etc\//, /\/proc\//] },
+  { toolName: 'web_search', requiredLevel: PermissionLevel.READ, maxFrequency: 10 },
+  { toolName: 'list_directory', requiredLevel: PermissionLevel.READ },
+  { toolName: 'search_files', requiredLevel: PermissionLevel.READ },
+  { toolName: 'memory_search', requiredLevel: PermissionLevel.READ },
+  { toolName: 'write_file', requiredLevel: PermissionLevel.WRITE, deniedPatterns: [/\/etc\//, /\/proc\//, /\/System\//], requireConfirmation: true, maxFrequency: 5 },
+  { toolName: 'memory_store', requiredLevel: PermissionLevel.WRITE },
+  { toolName: 'run_command', requiredLevel: PermissionLevel.EXTERNAL_ACTION, requireConfirmation: true, maxFrequency: 3 },
+  { toolName: 'web_extract', requiredLevel: PermissionLevel.READ },
+];
+
+export class PolicyEngine {
+  private policies: Map<string, PermissionPolicy> = new Map();
+
+  constructor(customPolicies: PermissionPolicy[] = []) {
+    for (const policy of DEFAULT_POLICIES) {
+      this.policies.set(policy.toolName, policy);
+    }
+    for (const policy of customPolicies) {
+      this.policies.set(policy.toolName, policy);
+    }
+  }
+
+  checkAuthorization(toolName: string, args: Record<string, unknown>): {
+    authorized: boolean;
+    reason?: string;
+    level: PermissionLevel;
+    requiresConfirmation: boolean;
+  } {
+    const policy = this.policies.get(toolName);
+
+    if (!policy) {
+      return {
+        authorized: false,
+        reason: `No policy configured for tool: ${toolName}`,
+        level: PermissionLevel.EXTERNAL_ACTION,
+        requiresConfirmation: true,
+      };
+    }
+
+    if (policy.deniedPatterns) {
+      const argsStr = JSON.stringify(args);
+      for (const pattern of policy.deniedPatterns) {
+        if (pattern.test(argsStr)) {
+          return {
+            authorized: false,
+            reason: `Arguments match denied pattern: ${pattern.source}`,
+            level: policy.requiredLevel,
+            requiresConfirmation: false,
+          };
+        }
+      }
+    }
+
+    return {
+      authorized: true,
+      level: policy.requiredLevel,
+      requiresConfirmation: policy.requireConfirmation ?? false,
+    };
+  }
+}