feat(web): configure AI confidence threshold (#175)

web/src/views/goauto/ai-matching-settings/index.vue

@@ -10,17 +10,13 @@
           <el-tag :type="form.enabled ? 'success' : 'info'" effect="light">{{ form.enabled ? '已启用' : '未启用' }}</el-tag>
         </div>
 
-        <el-alert
-          v-if="!isAdmin"
-          title="当前账号只能查看 AI 规格匹配是否启用。服务地址、模型和 API Key 仅管理员可见和修改。"
-          type="info"
-          :closable="false"
-          show-icon
-          class="notice"
-        />
+        <template v-if="!isAdmin">
+          <el-alert title="当前账号只能查看 AI 规格匹配是否启用和建议置信度阈值。服务地址、模型和 API Key 仅管理员可见和修改。" type="info" :closable="false" show-icon class="notice" />
+          <el-descriptions :column="1" border class="readonly-settings"><el-descriptions-item label="AI 建议置信度阈值">{{ form.autoConfirmMinConfidence.toFixed(2) }}</el-descriptions-item></el-descriptions>
+        </template>
         <template v-else>
           <el-alert
-            title="AI 只会在服务端已有的可选 PDD 颜色和尺码中返回原始标签。没有唯一结果时采购任务会明确失败，不会让 Android 猜测或点击相近规格。"
+            title="AI 只会返回服务端已有的可选 PDD 规格。达到阈值时，采购期可采用精确 AI 决策，虾皮规格 AI 建议会预填未保存草稿；低于阈值时只显示建议和原因，需人工选择。规格映射保存后仍需人工确认，系统永不自动支付。"
             type="warning"
             :closable="false"
             show-icon
@@ -41,6 +37,7 @@
                 <el-form-item label="Base URL" prop="baseUrl"><el-input v-model.trim="form.baseUrl" :disabled="!form.enabled || saving" placeholder="http://provider.example.com:8000/v1" autocomplete="url" /></el-form-item>
                 <el-form-item label="模型" prop="model"><el-input v-model.trim="form.model" :disabled="!form.enabled || saving" placeholder="例如 gpt-4.1-mini" autocomplete="off" /></el-form-item>
                 <el-form-item label="超时时间（秒）" prop="timeoutSeconds"><el-input-number v-model="form.timeoutSeconds" :min="3" :max="600" :disabled="!form.enabled || saving" controls-position="right" /></el-form-item>
+                <el-form-item label="AI 建议置信度阈值" prop="autoConfirmMinConfidence"><el-input-number v-model="form.autoConfirmMinConfidence" :min="0" :max="1" :step="0.01" :precision="2" :disabled="!form.enabled || saving" controls-position="right" /><p class="field-help">达到阈值才自动预填建议；范围 0～1。自动预填不等于自动确认或自动采购。</p></el-form-item>
                 <el-form-item label="API Key" prop="apiKey" class="api-key-field">
                   <el-input v-model="form.apiKey" type="password" show-password :disabled="!form.enabled || saving" placeholder="请输入 API Key" autocomplete="new-password" />
                 </el-form-item>
@@ -74,6 +71,7 @@ export default {
       } catch (_) { return callback(new Error('请输入有效的 HTTP 或 HTTPS 服务地址')) }
       return callback()
     }
+    const validConfidence = (_, value, callback) => { if (Number.isFinite(value) && value >= 0 && value <= 1) callback(); else callback(new Error('置信度阈值必须在 0 与 1 之间')) }
     return {
       loading: false,
       saving: false,
@@ -83,7 +81,8 @@ export default {
       rules: {
         baseUrl: [{ validator: validHttps, trigger: 'blur' }],
         model: [{ validator: (_, value, callback) => { if (!this.form.enabled || value) callback(); else callback(new Error('请输入模型名称')) }, trigger: 'blur' }],
-        apiKey: [{ validator: (_, value, callback) => { if (!this.form.enabled || value) callback(); else callback(new Error('请输入 API Key')) }, trigger: 'blur' }]
+        apiKey: [{ validator: (_, value, callback) => { if (!this.form.enabled || value) callback(); else callback(new Error('请输入 API Key')) }, trigger: 'blur' }],
+        autoConfirmMinConfidence: [{ validator: validConfidence, trigger: 'change' }]
       }
     }
   },
@@ -93,7 +92,7 @@ export default {
   },
   created() { this.load() },
   methods: {
-    emptyForm() { return { enabled: false, provider: 'openai_compatible', baseUrl: '', model: '', timeoutSeconds: 15, apiKey: '' } },
+    emptyForm() { return { enabled: false, provider: 'openai_compatible', baseUrl: '', model: '', timeoutSeconds: 15, autoConfirmMinConfidence: 0.9, apiKey: '' } },
     async load() {
       this.loading = true
       try {
@@ -106,7 +105,7 @@ export default {
       if (!valid) return
       this.saving = true
       try {
-        const response = await saveAiMatchingSettings({ enabled: this.form.enabled, baseUrl: this.form.baseUrl, model: this.form.model, timeoutSeconds: this.form.timeoutSeconds, apiKey: this.form.apiKey })
+        const response = await saveAiMatchingSettings({ enabled: this.form.enabled, baseUrl: this.form.baseUrl, model: this.form.model, timeoutSeconds: this.form.timeoutSeconds, autoConfirmMinConfidence: this.form.autoConfirmMinConfidence, apiKey: this.form.apiKey })
         this.form = { ...this.emptyForm(), ...response.data }
         ElMessage.success('AI 规格匹配设置已保存')
       } finally { this.saving = false }