feat(app.js, i18n, index.html, styles): implement Vertex AI credential import feature

- Added functionality for importing Vertex AI credentials, including file selection and upload handling in the CLIProxyManager.
- Updated UI components in index.html to support the new Vertex AI credential import feature.
- Enhanced internationalization strings to provide appropriate labels and messages for the Vertex AI import functionality in both English and Chinese.
- Introduced new styles for the Vertex AI credential import section to ensure a consistent user experience.

app.js

@@ -31,6 +31,13 @@ class CLIProxyManager {
         this.currentAuthFileFilter = 'all';
         this.cachedAuthFiles = [];
 
+        // Vertex AI credential import state
+        this.vertexImportState = {
+            file: null,
+            loading: false,
+            result: null
+        };
+
         // 主题管理
         this.currentTheme = 'light';
 
@@ -610,6 +617,24 @@ class CLIProxyManager {
             authFileInput.addEventListener('change', (e) => this.handleFileUpload(e));
         }
 
+        // Vertex AI credential import
+        const vertexSelectFile = document.getElementById('vertex-select-file');
+        const vertexFileInput = document.getElementById('vertex-file-input');
+        const vertexImportBtn = document.getElementById('vertex-import-btn');
+
+        if (vertexSelectFile) {
+            vertexSelectFile.addEventListener('click', () => this.openVertexFilePicker());
+        }
+        if (vertexFileInput) {
+            vertexFileInput.addEventListener('change', (e) => this.handleVertexFileSelection(e));
+        }
+        if (vertexImportBtn) {
+            vertexImportBtn.addEventListener('click', () => this.importVertexCredential());
+        }
+        this.updateVertexFileDisplay();
+        this.updateVertexImportButtonState();
+        this.renderVertexImportResult(this.vertexImportState.result);
+
         // Codex OAuth
         const codexOauthBtn = document.getElementById('codex-oauth-btn');
         const codexOpenLink = document.getElementById('codex-open-link');
@@ -3914,6 +3939,9 @@ class CLIProxyManager {
                 case 'iflow':
                     typeDisplayKey = 'auth_files.type_iflow';
                     break;
+                case 'vertex':
+                    typeDisplayKey = 'auth_files.type_vertex';
+                    break;
                 case 'empty':
                     typeDisplayKey = 'auth_files.type_empty';
                     break;
@@ -3992,6 +4020,7 @@ class CLIProxyManager {
             { type: 'claude', labelKey: 'auth_files.filter_claude' },
             { type: 'codex', labelKey: 'auth_files.filter_codex' },
             { type: 'iflow', labelKey: 'auth_files.filter_iflow' },
+            { type: 'vertex', labelKey: 'auth_files.filter_vertex' },
             { type: 'empty', labelKey: 'auth_files.filter_empty' }
         ];
 
@@ -4233,6 +4262,136 @@ class CLIProxyManager {
         return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
     }
 
+    // ===== Vertex AI Credential Import =====
+    openVertexFilePicker() {
+        const fileInput = document.getElementById('vertex-file-input');
+        if (fileInput) {
+            fileInput.click();
+        }
+    }
+
+    handleVertexFileSelection(event) {
+        const fileInput = event?.target;
+        const file = fileInput?.files?.[0] || null;
+
+        if (fileInput) {
+            fileInput.value = '';
+        }
+
+        if (file && !file.name.toLowerCase().endsWith('.json')) {
+            this.showNotification(i18n.t('vertex_import.file_required'), 'error');
+            this.vertexImportState.file = null;
+            this.updateVertexFileDisplay();
+            this.updateVertexImportButtonState();
+            return;
+        }
+
+        this.vertexImportState.file = file;
+        this.updateVertexFileDisplay(file ? file.name : '');
+        this.updateVertexImportButtonState();
+    }
+
+    updateVertexFileDisplay(filename = '') {
+        const displayInput = document.getElementById('vertex-file-display');
+        if (!displayInput) return;
+        displayInput.value = filename || '';
+    }
+
+    updateVertexImportButtonState() {
+        const importBtn = document.getElementById('vertex-import-btn');
+        if (!importBtn) return;
+        const disabled = !this.vertexImportState.file || this.vertexImportState.loading;
+        importBtn.disabled = disabled;
+    }
+
+    async importVertexCredential() {
+        if (!this.vertexImportState.file) {
+            this.showNotification(i18n.t('vertex_import.file_required'), 'error');
+            return;
+        }
+
+        const locationInput = document.getElementById('vertex-location');
+        const location = locationInput ? locationInput.value.trim() : '';
+        const formData = new FormData();
+        formData.append('file', this.vertexImportState.file, this.vertexImportState.file.name);
+        if (location) {
+            formData.append('location', location);
+        }
+
+        try {
+            this.vertexImportState.loading = true;
+            this.updateVertexImportButtonState();
+
+            const response = await fetch(`${this.apiUrl}/vertex/import`, {
+                method: 'POST',
+                headers: {
+                    'Authorization': `Bearer ${this.managementKey}`
+                },
+                body: formData
+            });
+
+            if (!response.ok) {
+                let errorMessage = `HTTP ${response.status}`;
+                try {
+                    const errorData = await response.json();
+                    errorMessage = errorData?.message || errorData?.error || errorMessage;
+                } catch (parseError) {
+                    const text = await response.text();
+                    if (text) {
+                        errorMessage = text;
+                    }
+                }
+                throw new Error(errorMessage);
+            }
+
+            const result = await response.json();
+            this.showNotification(i18n.t('vertex_import.success'), 'success');
+            this.renderVertexImportResult(result);
+            this.vertexImportState.file = null;
+            this.updateVertexFileDisplay();
+            this.clearCache();
+            await this.loadAuthFiles();
+        } catch (error) {
+            this.showNotification(`${i18n.t('notification.upload_failed')}: ${error.message}`, 'error');
+        } finally {
+            this.vertexImportState.loading = false;
+            this.updateVertexImportButtonState();
+            const fileInput = document.getElementById('vertex-file-input');
+            if (fileInput) {
+                fileInput.value = '';
+            }
+        }
+    }
+
+    renderVertexImportResult(result = null) {
+        const container = document.getElementById('vertex-import-result');
+        const projectEl = document.getElementById('vertex-result-project');
+        const emailEl = document.getElementById('vertex-result-email');
+        const locationEl = document.getElementById('vertex-result-location');
+        const fileEl = document.getElementById('vertex-result-file');
+
+        if (!container || !projectEl || !emailEl || !locationEl || !fileEl) {
+            return;
+        }
+
+        if (!result) {
+            this.vertexImportState.result = null;
+            container.style.display = 'none';
+            projectEl.textContent = '-';
+            emailEl.textContent = '-';
+            locationEl.textContent = '-';
+            fileEl.textContent = '-';
+            return;
+        }
+
+        this.vertexImportState.result = result;
+        projectEl.textContent = result.project_id || '-';
+        emailEl.textContent = result.email || '-';
+        locationEl.textContent = result.location || 'us-central1';
+        fileEl.textContent = result['auth-file'] || result.auth_file || '-';
+        container.style.display = 'block';
+    }
+
     // 上传认证文件
     uploadAuthFile() {
         document.getElementById('auth-file-input').click();

i18n.js

@@ -217,7 +217,7 @@ const i18n = {
             // 认证文件管理
             'auth_files.title': '认证文件管理',
             'auth_files.title_section': '认证文件',
-            'auth_files.description': '这里管理 Qwen 和 Gemini 的认证配置文件。上传 JSON 格式的认证文件以启用相应的 AI 服务。',
+            'auth_files.description': '这里集中管理 CLI Proxy 支持的所有 JSON 认证文件（如 Qwen、Gemini、Vertex 等），上传后即可在运行时启用相应的 AI 服务。',
             'auth_files.upload_button': '上传文件',
             'auth_files.delete_all_button': '删除全部',
             'auth_files.empty_title': '暂无认证文件',
@@ -246,6 +246,7 @@ const i18n = {
             'auth_files.filter_claude': 'Claude',
             'auth_files.filter_codex': 'Codex',
             'auth_files.filter_iflow': 'iFlow',
+            'auth_files.filter_vertex': 'Vertex',
             'auth_files.filter_empty': '空文件',
             'auth_files.filter_unknown': '其他',
             'auth_files.type_qwen': 'Qwen',
@@ -255,8 +256,26 @@ const i18n = {
             'auth_files.type_claude': 'Claude',
             'auth_files.type_codex': 'Codex',
             'auth_files.type_iflow': 'iFlow',
+            'auth_files.type_vertex': 'Vertex',
             'auth_files.type_empty': '空文件',
             'auth_files.type_unknown': '其他',
+            'vertex_import.title': 'Vertex AI 凭证导入',
+            'vertex_import.description': '上传 Google 服务账号 JSON，使用 CLI vertex-import 同步规则写入 auth-dir/vertex-<project>.json。',
+            'vertex_import.location_label': '目标区域 (可选)',
+            'vertex_import.location_placeholder': 'us-central1',
+            'vertex_import.location_hint': '留空表示使用默认区域 us-central1。',
+            'vertex_import.file_label': '服务账号密钥 JSON',
+            'vertex_import.file_hint': '仅支持 Google Cloud service account key JSON 文件，私钥会自动规范化。',
+            'vertex_import.file_placeholder': '尚未选择文件',
+            'vertex_import.choose_file': '选择文件',
+            'vertex_import.import_button': '导入 Vertex 凭证',
+            'vertex_import.file_required': '请先选择 .json 凭证文件',
+            'vertex_import.success': 'Vertex 凭证导入成功',
+            'vertex_import.result_title': '凭证已保存',
+            'vertex_import.result_project': '项目 ID',
+            'vertex_import.result_email': '服务账号',
+            'vertex_import.result_location': '区域',
+            'vertex_import.result_file': '存储文件',
 
 
             // Codex OAuth
@@ -685,7 +704,7 @@ const i18n = {
             // Auth files management
             'auth_files.title': 'Auth Files Management',
             'auth_files.title_section': 'Auth Files',
-            'auth_files.description': 'Here you can manage authentication configuration files for Qwen and Gemini. Upload JSON format authentication files to enable the corresponding AI services.',
+            'auth_files.description': 'Manage all CLI Proxy JSON auth files here (e.g. Qwen, Gemini, Vertex). Uploading a credential immediately enables the corresponding AI integration.',
             'auth_files.upload_button': 'Upload File',
             'auth_files.delete_all_button': 'Delete All',
             'auth_files.empty_title': 'No Auth Files',
@@ -714,6 +733,7 @@ const i18n = {
             'auth_files.filter_claude': 'Claude',
             'auth_files.filter_codex': 'Codex',
             'auth_files.filter_iflow': 'iFlow',
+            'auth_files.filter_vertex': 'Vertex',
             'auth_files.filter_empty': 'Empty',
             'auth_files.filter_unknown': 'Other',
             'auth_files.type_qwen': 'Qwen',
@@ -723,8 +743,26 @@ const i18n = {
             'auth_files.type_claude': 'Claude',
             'auth_files.type_codex': 'Codex',
             'auth_files.type_iflow': 'iFlow',
+            'auth_files.type_vertex': 'Vertex',
             'auth_files.type_empty': 'Empty',
             'auth_files.type_unknown': 'Other',
+            'vertex_import.title': 'Vertex AI Credential Import',
+            'vertex_import.description': 'Upload a Google service account JSON to store it as auth-dir/vertex-<project>.json using the same rules as the CLI vertex-import helper.',
+            'vertex_import.location_label': 'Region (optional)',
+            'vertex_import.location_placeholder': 'us-central1',
+            'vertex_import.location_hint': 'Leave empty to use the default region us-central1.',
+            'vertex_import.file_label': 'Service account key JSON',
+            'vertex_import.file_hint': 'Only Google Cloud service account key JSON files are accepted.',
+            'vertex_import.file_placeholder': 'No file selected',
+            'vertex_import.choose_file': 'Choose File',
+            'vertex_import.import_button': 'Import Vertex Credential',
+            'vertex_import.file_required': 'Select a .json credential file first',
+            'vertex_import.success': 'Vertex credential imported successfully',
+            'vertex_import.result_title': 'Credential saved',
+            'vertex_import.result_project': 'Project ID',
+            'vertex_import.result_email': 'Service account',
+            'vertex_import.result_location': 'Region',
+            'vertex_import.result_file': 'Persisted file',
 
             // Codex OAuth
             'auth_login.codex_oauth_title': 'Codex OAuth',

index.html

@@ -458,6 +458,7 @@
                                             <button class="filter-btn" data-type="claude" data-i18n-text="auth_files.filter_claude">Claude</button>
                                             <button class="filter-btn" data-type="codex" data-i18n-text="auth_files.filter_codex">Codex</button>
                                             <button class="filter-btn" data-type="iflow" data-i18n-text="auth_files.filter_iflow">iFlow</button>
+                                            <button class="filter-btn" data-type="vertex" data-i18n-text="auth_files.filter_vertex">Vertex</button>
                                             <button class="filter-btn" data-type="empty" data-i18n-text="auth_files.filter_empty">Empty</button>
                                         </div>
                                     </div>
@@ -478,6 +479,51 @@
                                 </div>
                             </div>
 
+                            <!-- Vertex AI Credential Import -->
+                            <div class="card" id="vertex-import-card">
+                                <div class="card-header">
+                                    <h3><i class="fas fa-cloud-upload-alt"></i> <span data-i18n="vertex_import.title">Vertex AI 凭证导入</span></h3>
+                                </div>
+                                <div class="card-content">
+                                    <p class="form-hint" data-i18n="vertex_import.description">
+                                        上传 Google 服务账号 JSON 并保存为 vertex-<project>.json。
+                                    </p>
+                                    <div class="form-group">
+                                        <label for="vertex-location" data-i18n="vertex_import.location_label">区域 (可选)</label>
+                                        <input type="text" id="vertex-location" data-i18n-placeholder="vertex_import.location_placeholder" value="us-central1">
+                                        <p class="form-hint" data-i18n="vertex_import.location_hint">留空则使用默认 us-central1。</p>
+                                    </div>
+                                    <div class="form-group">
+                                        <label data-i18n="vertex_import.file_label">服务账号密钥 JSON</label>
+                                        <div class="input-group">
+                                            <input type="text" id="vertex-file-display" readonly data-i18n-placeholder="vertex_import.file_placeholder" placeholder="尚未选择文件">
+                                            <input type="file" id="vertex-file-input" accept=".json" style="display: none;">
+                                            <button type="button" id="vertex-select-file" class="btn btn-secondary">
+                                                <i class="fas fa-file-upload"></i> <span data-i18n="vertex_import.choose_file">选择文件</span>
+                                            </button>
+                                        </div>
+                                        <p class="form-hint" data-i18n="vertex_import.file_hint">仅支持 Google Cloud service account JSON。</p>
+                                    </div>
+                                    <div class="form-actions vertex-import-actions">
+                                        <button type="button" id="vertex-import-btn" class="btn btn-primary" disabled>
+                                            <i class="fas fa-cloud-upload-alt"></i> <span data-i18n="vertex_import.import_button">导入 Vertex 凭证</span>
+                                        </button>
+                                    </div>
+                                    <div id="vertex-import-result" class="vertex-import-result" style="display: none;">
+                                        <div class="vertex-import-result-header">
+                                            <i class="fas fa-check-circle"></i>
+                                            <span data-i18n="vertex_import.result_title">凭证已保存</span>
+                                        </div>
+                                        <ul>
+                                            <li><span data-i18n="vertex_import.result_project">项目 ID</span>: <code id="vertex-result-project">-</code></li>
+                                            <li><span data-i18n="vertex_import.result_email">服务账号</span>: <code id="vertex-result-email">-</code></li>
+                                            <li><span data-i18n="vertex_import.result_location">区域</span>: <code id="vertex-result-location">-</code></li>
+                                            <li><span data-i18n="vertex_import.result_file">存储文件</span>: <code id="vertex-result-file">-</code></li>
+                                        </ul>
+                                    </div>
+                                </div>
+                            </div>
+
                             <!-- Codex OAuth -->
                             <div class="card" id="codex-oauth-card">
                                 <div class="card-header">

styles.css

@@ -3758,6 +3758,60 @@ input:checked+.slider:before {
     color: #f472b6;
 }
 
+/* Vertex AI Credential Import */
+.vertex-import-actions {
+    text-align: left;
+    margin-top: 10px;
+}
+
+.vertex-import-result {
+    margin-top: 20px;
+    border: 1px dashed var(--border-primary);
+    border-radius: 12px;
+    padding: 16px;
+    background: var(--bg-quaternary);
+    color: var(--text-primary);
+}
+
+.vertex-import-result-header {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    font-weight: 600;
+    margin-bottom: 10px;
+    color: var(--success-text);
+}
+
+.vertex-import-result ul {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+
+.vertex-import-result li {
+    margin-bottom: 6px;
+    font-size: 14px;
+    color: var(--text-secondary);
+}
+
+.vertex-import-result code {
+    background: var(--bg-secondary);
+    border-radius: 6px;
+    padding: 2px 6px;
+    font-size: 13px;
+    color: var(--text-primary);
+}
+
+[data-theme="dark"] .vertex-import-result {
+    border-color: rgba(96, 165, 250, 0.4);
+    background: rgba(15, 23, 42, 0.4);
+}
+
+[data-theme="dark"] .vertex-import-result code {
+    background: rgba(7, 11, 22, 0.8);
+    color: #f3f4f6;
+}
+
 /* ===== AI提供商统计徽章样式 ===== */
 
 /* 统计信息容器 */