feat: 添加本地 Memory/Vault 管理命令

- /local-memory: 本地记忆管理（store/entry CRUD、搜索、归档）
- /local-vault: 本地密钥保险库管理（加解密、keychain 集成）
- permissionValidation: vault 权限校验增强

Co-Authored-By: glm-5-turbo <zai-org@claude-code-best.win>

src/commands/local-vault/index.tsx

@@ -0,0 +1,21 @@
+import type { Command } from '../../types/command.js';
+
+const localVaultCommand: Command = {
+  type: 'local-jsx',
+  name: 'local-vault',
+  aliases: ['lv', 'local-secret'],
+  description:
+    'Manage local encrypted secrets. Stored in OS keychain or encrypted file fallback — no API key required.',
+  // Avoid `<key>` / `<value>` in the hint — REPL markdown renderer eats angle-
+  // bracketed words as HTML tags. Uppercase placeholders survive intact.
+  argumentHint: 'list | set KEY VALUE | get KEY [--reveal] | delete KEY',
+  isHidden: false,
+  isEnabled: () => true,
+  bridgeSafe: true,
+  load: async () => {
+    const m = await import('./launchLocalVault.js');
+    return { call: m.callLocalVault };
+  },
+};
+
+export default localVaultCommand;