diff --git a/README.md b/README.md
index 88ab12f..92591da 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 </p>
 
 <p align="center">
-  <img src="https://img.shields.io/badge/version-v0.16.1-E8734A?style=flat-square" alt="version">
+  <img src="https://img.shields.io/badge/version-v0.16.2-E8734A?style=flat-square" alt="version">
   <img src="https://img.shields.io/badge/electron-33+-47848F?style=flat-square&logo=electron" alt="electron">
   <img src="https://img.shields.io/badge/typescript-5.7+-3178C6?style=flat-square&logo=typescript" alt="typescript">
   <img src="https://img.shields.io/badge/license-MIT-green?style=flat-square" alt="license">
@@ -253,7 +253,7 @@ npm start
 ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ npm run dist
 ```
 
-产出：`release/Metona Ollama Setup v0.16.1.exe`
+产出：`release/Metona Ollama Setup v0.16.2.exe`
 
 ## 🛠️ 常用命令
 
@@ -501,7 +501,7 @@ npm start
 ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ npm run dist
 ```
 
-Output: `release/Metona Ollama Setup v0.16.1.exe`
+Output: `release/Metona Ollama Setup v0.16.2.exe`
 
 ## 🛠️ Common Commands
 
diff --git a/package-lock.json b/package-lock.json
index a5d3009..ab52dfd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "metona-ollama-desktop",
-  "version": "0.16.1",
+  "version": "0.16.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "metona-ollama-desktop",
-      "version": "0.16.1",
+      "version": "0.16.2",
       "license": "MIT",
       "dependencies": {
         "ffmpeg-static": "^5.2.0",
diff --git a/package.json b/package.json
index 1db113c..b54cd9a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "metona-ollama-desktop",
-  "version": "0.16.1",
+  "version": "0.16.2",
   "description": "Metona Ollama - TypeScript + Electron 桌面 AI 聊天客户端",
   "main": "dist/main/main.js",
   "author": "thzxx",
diff --git a/src/main/menu.ts b/src/main/menu.ts
index e59ea70..4dc1630 100644
--- a/src/main/menu.ts
+++ b/src/main/menu.ts
@@ -101,7 +101,7 @@ export function createMenu(): void {
             dialog.showMessageBox(mainWindow!, {
               type: 'info',
               title: '关于 Metona Ollama',
-              message: 'Metona Ollama Desktop v0.16.1',
+              message: 'Metona Ollama Desktop v0.16.2',
               detail: 'TypeScript + Electron Ollama AI 聊天客户端\n\nhttps://gitee.com/thzxx/metona-ollama',
               icon: getIconPath()
             });
diff --git a/src/renderer/components/input-area.ts b/src/renderer/components/input-area.ts
index 3a7267d..6242d24 100644
--- a/src/renderer/components/input-area.ts
+++ b/src/renderer/components/input-area.ts
@@ -925,17 +925,7 @@ function buildPlanConfirmHtml(plan: string, steps: string[]): string {
   `;
 }
 
-/** Base64 编码（支持 UTF-8） */
-function base64Encode(str: string): string {
-  const bytes = new TextEncoder().encode(str);
-  let binary = '';
-  for (let i = 0; i < bytes.length; i++) {
-    binary += String.fromCharCode(bytes[i]);
-  }
-  return btoa(binary);
-}
-
-function buildFileContentParts(fileContents: Array<{ language: string; content: string }>): string[] {
+function buildFileContentParts(fileContents: Array<{ name: string; language: string; content: string }>): string[] {
   const numCtx = state.get<number>(KEYS.NUM_CTX, 24576);
   const fileBudget = Math.floor(numCtx * FILE_TOKEN_BUDGET_RATIO);
   let usedTokens = 0;
@@ -963,10 +953,9 @@ function buildFileContentParts(fileContents: Array<{ language: string; content:
     usedTokens += finalTokens;
 
     return JSON.stringify({
-      file_name: `文件 ${i + 1}/${fileContents.length}`,
+      file_name: f.name,
       file_type: lang,
-      context_encode: 'base64',
-      context: base64Encode(text),
+      context: text,
     });
   }).filter(Boolean);
 }
@@ -1127,10 +1116,12 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
     // ── 聊天卡片：只显示用户自己的文字 + 附件视觉预览（缩略图/文件卡片/视频帧），不含代码生成的文本标记 ──
     const displayContent = text || '';
 
-    // ── Ollama API 用：附件 JSON 结构化数据在前，用户文字消息始终在最后 ──
+    // ── Ollama API 用：用户文字消息在最前，附件 JSON 结构化数据在后 ──
     const apiParts: string[] = [];
+    // 用户文字始终放最前
+    if (text) apiParts.push(text);
     if (userFiles.length > 0) {
-      const fileContents = pendingFiles.map(f => ({ language: f.language, content: f.content }));
+      const fileContents = pendingFiles.map(f => ({ name: f.name, language: f.language, content: f.content }));
       const fileParts = buildFileContentParts(fileContents);
       apiParts.push(...fileParts);
       logInfo('📄 文件内容已注入', `${fileParts.length} 段, 共 ${fileContents.reduce((s, f) => s + f.content.length, 0)} 字符`);
@@ -1150,8 +1141,7 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
         apiParts.push(JSON.stringify({
           file_name: v.name,
           file_type: v.name.split('.').pop() || 'video',
-          context_encode: 'base64',
-          context: base64Encode(JSON.stringify({
+          context: JSON.stringify({
             frame_count: v.count,
             fps: 1,
             duration: Math.round(v.dur),
@@ -1161,13 +1151,11 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
               timestamp: f.timestampSeconds,
               image_index: imageStart + fi,
             })),
-          })),
+          }),
         }));
         imageStart += v.count;
       }
     }
-    // 用户文字始终放最后
-    if (text) apiParts.push(text);
     apiContentForModel = apiParts.join('\n\n');
 
     const msg: ChatMessage = {
@@ -1184,7 +1172,7 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
     }
     if (userFiles.length > 0) {
       msg.files = userFiles;
-      msg._fileContents = pendingFiles.map(f => ({ language: f.language, content: f.content }));
+      msg._fileContents = pendingFiles.map(f => ({ name: f.name, language: f.language, content: f.content }));
     }
     msgsToAdd.push(msg);
   } else if (text || pendingFiles.length > 0) {
@@ -1196,7 +1184,7 @@ async function sendMessageWithAgentLoop(text: string, currentSession: ChatSessio
     };
     if (userFiles.length > 0) {
       msg.files = userFiles;
-      msg._fileContents = pendingFiles.map(f => ({ language: f.language, content: f.content }));
+      msg._fileContents = pendingFiles.map(f => ({ name: f.name, language: f.language, content: f.content }));
     }
     msgsToAdd.push(msg);
   }
diff --git a/src/renderer/index.html b/src/renderer/index.html
index f17cbb9..9b16d3d 100644
--- a/src/renderer/index.html
+++ b/src/renderer/index.html
@@ -28,7 +28,7 @@
         <div class="header-left">
             <img class="logo" src="./assets/icons/llama.png" alt="logo" />
             <span class="app-title">Metona Ollama</span>
-            <span class="app-version">v0.16.1</span>
+            <span class="app-version">v0.16.2</span>
             <button class="icon-btn help-btn" id="btnHelp" title="使用帮助">
                 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                     <circle cx="12" cy="12" r="10"/><path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"/>
diff --git a/src/renderer/types.d.ts b/src/renderer/types.d.ts
index ef61139..e1ae34b 100644
--- a/src/renderer/types.d.ts
+++ b/src/renderer/types.d.ts
@@ -97,6 +97,7 @@ export interface ChatFile {
 }
 
 export interface FileContent {
+  name: string;
   language: string;
   content: string;
 }