diff --git a/README.md b/README.md
index 83a07f1..1be0a4c 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ macOS / Windows 微信聊天记录查看，AI 一键生成群聊总结。
 
 在微信 4.0 数据库解析、解密思路上，项目参考了 [WeFlow](https://github.com/hicccc77/WeFlow) 等开源项目的实现方式；此项目围绕我自己的使用场景做的定制化工具，重点放在本地聊天记录查看、群聊总结和个人工作流集成上。
 
-> 当前版本：`v2.1.0`。macOS 支持相对稳定；Windows 已初步支持微信 4.0 数据库连接、自动获取密钥和聊天记录查看，仍在持续兼容不同微信版本与本地目录结构。
+> 当前版本：`v2.1.2`。macOS 支持相对稳定；Windows 已初步支持微信 4.0 数据库连接、自动获取密钥和聊天记录查看，仍在持续兼容不同微信版本与本地目录结构。
 
 ## ✨ 功能特性
 
diff --git a/src/main/index.ts b/src/main/index.ts
index c6f65e8..04fc512 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -556,9 +556,9 @@ app.whenReady().then(async () => {
       if (!provider || !model) {
         return { success: false, error: '当前 AI 模型不存在' }
       }
-      if (!model.capabilities.vision) {
-        return { success: false, error: '当前模型不支持图片理解' }
-      }
+      // Capability metadata is stored per machine. A model verified on macOS
+      // may still be unmarked on Windows, so do not reject before making the
+      // real multimodal request. The provider response remains authoritative.
       // request 来自 renderer,imageHash 是 md5(优先)或 sha256(...),dataUrl 在内部算出
       // 这里直接调 service,dataUrl 由 renderer 通过 window.api.getImage 拿到再传进来
       return imageInsightService.analyze(request)
diff --git a/src/main/services/ai-provider-service.ts b/src/main/services/ai-provider-service.ts
index 14a5c10..5accd30 100644
--- a/src/main/services/ai-provider-service.ts
+++ b/src/main/services/ai-provider-service.ts
@@ -195,6 +195,9 @@ export class AIProviderService {
       const imageError = validateVisionImage(imagePart.dataUrl)
       if (imageError) throw new Error(imageError)
       const result = await this.request(messages as AIMessage[], options)
+      if (options?.providerId && options.modelId) {
+        this.markCapabilities(options.providerId, options.modelId, { vision: true, ocr: true })
+      }
       return { success: true, ...result }
     } catch (error) {
       return { success: false, error: safeAIError(error) }
diff --git a/src/renderer/src/hooks/useGroupReportGeneration.ts b/src/renderer/src/hooks/useGroupReportGeneration.ts
index 23afc9f..bef992c 100644
--- a/src/renderer/src/hooks/useGroupReportGeneration.ts
+++ b/src/renderer/src/hooks/useGroupReportGeneration.ts
@@ -175,13 +175,18 @@ const applyGroupMemberNames = async (
     const member = memberMap.get(senderId)
     if (!member) return message
     const preferredNames: Record<ReportMemberNamePreference, string[]> = {
-      groupNickname: [member.groupNickname, member.wechatNickname, member.remark, member.nickname],
-      wechatNickname: [member.wechatNickname, member.groupNickname, member.remark, member.nickname],
+      // Keep the three modes semantically distinct. `member.nickname` may
+      // already be a contact remark, so it must not leak into the first two.
+      groupNickname: [member.groupNickname, member.wechatNickname],
+      wechatNickname: [member.wechatNickname, member.groupNickname],
       remark: [member.remark, member.groupNickname, member.wechatNickname, member.nickname]
     }
     const name = preferredNames[preference].find((value) => value && !isInternalName(value))
-    if (!name) return message
-    return { ...message, name, img: message.img || member.avatar }
+    return {
+      ...message,
+      name: name || (preference === 'remark' ? message.name : ''),
+      img: message.img || member.avatar
+    }
   })
 }
 
@@ -222,11 +227,12 @@ export function useGroupReportGeneration({
   const [generatedImage, setGeneratedImage] = useState<string | null>(null)
   const [reportPaths, setReportPaths] = useState<ReportPaths | null>(null)
   const [templateId, setTemplateId] = useState<ReportTemplateId>('v1')
-  const [memberNamePreference, setMemberNamePreferenceState] =
-    useState<ReportMemberNamePreference>(() => {
+  const [memberNamePreference, setMemberNamePreferenceState] = useState<ReportMemberNamePreference>(
+    () => {
       const saved = localStorage.getItem('group_report_member_name_preference')
       return saved === 'wechatNickname' || saved === 'remark' ? saved : 'groupNickname'
-    })
+    }
+  )
   const [reportTimeoutSeconds, setReportTimeoutSecondsState] = useState<number>(() => {
     const saved = Number(localStorage.getItem('group_report_timeout_seconds'))
     return Number.isFinite(saved) && saved >= 30 ? saved : 300