diff --git a/packages/core/src/agent/presets/plan.ts b/packages/core/src/agent/presets/plan.ts
index 23fddaa..78b8780 100644
--- a/packages/core/src/agent/presets/plan.ts
+++ b/packages/core/src/agent/presets/plan.ts
@@ -37,6 +37,8 @@ export const planAgent: Omit<AgentInfo, 'name'> = {
       'checkpoint_create',
       'checkpoint_restore',
       'undo',
+      // 工具发现（Plan 模式不应动态发现新工具）
+      'tool_search',
     ],
   },
   permission: {
@@ -49,6 +51,52 @@ export const planAgent: Omit<AgentInfo, 'name'> = {
     bash: {
       enabled: true,
       rules: [
+        // ============================================================
+        // 重要：deny 规则必须放在 allow 规则之前，确保优先匹配！
+        // ============================================================
+
+        // ============ 危险命令 - 拒绝 ============
+        { pattern: 'rm *', action: 'deny' },
+        { pattern: 'rmdir *', action: 'deny' },
+        { pattern: 'mv *', action: 'deny' },
+        { pattern: 'cp *', action: 'deny' },
+        { pattern: 'mkdir *', action: 'deny' },
+        { pattern: 'touch *', action: 'deny' },
+        { pattern: 'chmod *', action: 'deny' },
+        { pattern: 'chown *', action: 'deny' },
+        { pattern: 'sudo *', action: 'deny' },
+        { pattern: 'su *', action: 'deny' },
+        { pattern: 'ln *', action: 'deny' },
+        { pattern: 'install *', action: 'deny' },
+        { pattern: 'truncate *', action: 'deny' },
+        { pattern: 'dd *', action: 'deny' },
+        { pattern: 'tee *', action: 'deny' },
+
+        // ============ 重定向操作 - 拒绝（必须在 cat/echo 等允许规则之前）============
+        { pattern: '* > *', action: 'deny' },
+        { pattern: '* >> *', action: 'deny' },
+        { pattern: '* << *', action: 'deny' }, // heredoc 重定向
+
+        // ============ Git 写操作 - 拒绝 ============
+        { pattern: 'git add *', action: 'deny' },
+        { pattern: 'git commit *', action: 'deny' },
+        { pattern: 'git push *', action: 'deny' },
+        { pattern: 'git pull *', action: 'deny' },
+        { pattern: 'git checkout *', action: 'deny' },
+        { pattern: 'git reset *', action: 'deny' },
+        { pattern: 'git rebase *', action: 'deny' },
+        { pattern: 'git merge *', action: 'deny' },
+        { pattern: 'git stash *', action: 'deny' },
+        { pattern: 'git clean *', action: 'deny' },
+
+        // ============ find 危险操作 - 拒绝 ============
+        { pattern: 'find * -delete*', action: 'deny' },
+        { pattern: 'find * -exec*', action: 'deny' },
+
+        // ============================================================
+        // 以下为只读操作的 allow 规则
+        // ============================================================
+
         // ============ 文件查看 - 允许 ============
         { pattern: 'ls', action: 'allow' },
         { pattern: 'ls *', action: 'allow' },
@@ -100,38 +148,6 @@ export const planAgent: Omit<AgentInfo, 'name'> = {
         { pattern: 'git blame *', action: 'allow' },
         { pattern: 'git ls-files*', action: 'allow' },
         { pattern: 'git rev-parse *', action: 'allow' },
-
-        // ============ 危险命令 - 拒绝 ============
-        { pattern: 'rm *', action: 'deny' },
-        { pattern: 'rmdir *', action: 'deny' },
-        { pattern: 'mv *', action: 'deny' },
-        { pattern: 'cp *', action: 'deny' },
-        { pattern: 'mkdir *', action: 'deny' },
-        { pattern: 'touch *', action: 'deny' },
-        { pattern: 'chmod *', action: 'deny' },
-        { pattern: 'chown *', action: 'deny' },
-        { pattern: 'sudo *', action: 'deny' },
-        { pattern: 'su *', action: 'deny' },
-
-        // ============ Git 写操作 - 拒绝 ============
-        { pattern: 'git add *', action: 'deny' },
-        { pattern: 'git commit *', action: 'deny' },
-        { pattern: 'git push *', action: 'deny' },
-        { pattern: 'git pull *', action: 'deny' },
-        { pattern: 'git checkout *', action: 'deny' },
-        { pattern: 'git reset *', action: 'deny' },
-        { pattern: 'git rebase *', action: 'deny' },
-        { pattern: 'git merge *', action: 'deny' },
-        { pattern: 'git stash *', action: 'deny' },
-        { pattern: 'git clean *', action: 'deny' },
-
-        // ============ find 危险操作 - 拒绝 ============
-        { pattern: 'find * -delete*', action: 'deny' },
-        { pattern: 'find * -exec*', action: 'deny' },
-
-        // ============ 重定向操作 - 拒绝 ============
-        { pattern: '* > *', action: 'deny' },
-        { pattern: '* >> *', action: 'deny' },
       ],
       default: 'ask', // 其他命令询问用户
     },
diff --git a/packages/core/src/permission/wildcard.ts b/packages/core/src/permission/wildcard.ts
index e0eb5ee..f87c533 100644
--- a/packages/core/src/permission/wildcard.ts
+++ b/packages/core/src/permission/wildcard.ts
@@ -95,6 +95,35 @@ export function matchRules(
   return matchSingleCommand(parsed, rules, defaultAction);
 }
 
+/**
+ * 检查原始命令字符串是否包含危险的重定向操作
+ * 这是一个快速预检，在 tree-sitter 解析之前进行
+ */
+function checkRedirectInRawCommand(
+  command: string,
+  rules: PermissionRule[]
+): { action: PermissionAction; matchedPattern?: string } | null {
+  // 检查重定向相关的 deny 规则
+  const redirectPatterns = ['* > *', '* >> *', '* << *'];
+
+  for (const rule of rules) {
+    if (rule.action === 'deny' && redirectPatterns.includes(rule.pattern)) {
+      // 根据模式检查原始命令
+      if (rule.pattern === '* > *' && / > /.test(command) && !/ >> /.test(command)) {
+        return { action: 'deny', matchedPattern: rule.pattern };
+      }
+      if (rule.pattern === '* >> *' && / >> /.test(command)) {
+        return { action: 'deny', matchedPattern: rule.pattern };
+      }
+      if (rule.pattern === '* << *' && / << /.test(command)) {
+        return { action: 'deny', matchedPattern: rule.pattern };
+      }
+    }
+  }
+
+  return null;
+}
+
 /**
  * 使用 tree-sitter 解析并检查所有命令的权限（异步版本）
  * 返回最严格的权限要求
@@ -109,6 +138,18 @@ export async function matchRulesAsync(
   allCommands: ParsedCommand[];
   askPatterns: string[];
 }> {
+  // 首先检查原始命令中的重定向操作（这是安全关键检查，必须在解析之前进行）
+  const redirectCheck = checkRedirectInRawCommand(command, rules);
+  if (redirectCheck) {
+    // 如果检测到重定向被拒绝，直接返回
+    return {
+      action: redirectCheck.action,
+      matchedPattern: redirectCheck.matchedPattern,
+      allCommands: [parseCommandSimple(command)],
+      askPatterns: [],
+    };
+  }
+
   const result = await parseBashCommand(command);
 
   // 如果解析失败，降级到简单解析