diff --git a/src/components/AIChat/chat/ChatMessage.planValidation.test.ts b/src/components/AIChat/chat/ChatMessage.planValidation.test.ts
new file mode 100644
index 00000000..ee9eb4ef
--- /dev/null
+++ b/src/components/AIChat/chat/ChatMessage.planValidation.test.ts
@@ -0,0 +1,20 @@
+import assert from 'node:assert/strict'
+import { readFileSync } from 'node:fs'
+import { describe, it } from 'node:test'
+
+describe('ChatMessage plan validation rendering', () => {
+  it('does not render a manual step number inside the ordered validation list', () => {
+    const source = readFileSync(new URL('./ChatMessage.vue', import.meta.url), 'utf8')
+    const validationSection = source.slice(
+      source.indexOf("block.tag === 'plan_validation'"),
+      source.indexOf('<!-- 技能块 -->')
+    )
+
+    assert.ok(validationSection.includes('<ol'), 'expected plan validation steps to render in an ordered list')
+    assert.equal(
+      validationSection.includes('{{ stepIndex + 1 }}.'),
+      false,
+      'ordered lists already render step numbers, so the template must not add another number'
+    )
+  })
+})
diff --git a/src/components/AIChat/chat/ChatMessage.vue b/src/components/AIChat/chat/ChatMessage.vue
index 9162bd57..699a204e 100644
--- a/src/components/AIChat/chat/ChatMessage.vue
+++ b/src/components/AIChat/chat/ChatMessage.vue
@@ -576,7 +576,7 @@ async function handleCopyMarkdown() {
                       class="text-gray-600 dark:text-gray-300"
                     >
                       <div class="font-medium text-gray-800 dark:text-gray-200">
-                        {{ stepIndex + 1 }}. {{ step.goal }}
+                        {{ step.goal }}
                       </div>
                       <div v-if="step.evidenceNeeded" class="mt-1 text-gray-500 dark:text-gray-400">
                         {{ t('ai.chat.message.plan.evidenceNeeded') }}: {{ step.evidenceNeeded }}
diff --git a/src/i18n/locales/en-US/ai.json b/src/i18n/locales/en-US/ai.json
index fe04d65f..e08b7fdd 100644
--- a/src/i18n/locales/en-US/ai.json
+++ b/src/i18n/locales/en-US/ai.json
@@ -127,7 +127,7 @@
           "analysis": "Analysis",
           "reasoning": "Reasoning",
           "reflection": "Reflection",
-          "planValidation": "Generate and validate steps",
+          "planValidation": "Generate plan",
           "other": "Thinking ({tag})"
         },
         "loading": "Thinking",
diff --git a/src/i18n/locales/ja-JP/ai.json b/src/i18n/locales/ja-JP/ai.json
index 5f6443b4..6f6ae543 100644
--- a/src/i18n/locales/ja-JP/ai.json
+++ b/src/i18n/locales/ja-JP/ai.json
@@ -127,7 +127,7 @@
           "analysis": "分析",
           "reasoning": "推論",
           "reflection": "振り返り",
-          "planValidation": "手順の生成・検証",
+          "planValidation": "計画を生成",
           "other": "思考（{tag}）"
         },
         "loading": "思考中...",
diff --git a/src/i18n/locales/zh-CN/ai.json b/src/i18n/locales/zh-CN/ai.json
index 5b1ab93e..d203f23f 100644
--- a/src/i18n/locales/zh-CN/ai.json
+++ b/src/i18n/locales/zh-CN/ai.json
@@ -127,7 +127,7 @@
           "analysis": "分析",
           "reasoning": "推理",
           "reflection": "反思",
-          "planValidation": "生成并校验步骤",
+          "planValidation": "生成计划",
           "other": "思考（{tag}）"
         },
         "loading": "思考中",
diff --git a/src/i18n/locales/zh-TW/ai.json b/src/i18n/locales/zh-TW/ai.json
index da7a0a49..2cf0a76f 100644
--- a/src/i18n/locales/zh-TW/ai.json
+++ b/src/i18n/locales/zh-TW/ai.json
@@ -127,7 +127,7 @@
           "analysis": "分析",
           "reasoning": "推理",
           "reflection": "反思",
-          "planValidation": "產生並校驗步驟",
+          "planValidation": "產生計畫",
           "other": "思考（{tag}）"
         },
         "loading": "思考中",