feat(opencode): add OpenCode Go platform to admin frontend

- GroupsView: opencode option in platform select + filter
- CreateAccountModal/EditAccountModal: opencode platform button,
  base_url/api_key placeholders (opencode.ai/zen/go/v1), credentials
  builder fallback
- PlatformIcon: opencode terminal icon
- useModelWhitelist: opencode preset with 11 chat-completions models
  (grok-4.5, glm-5.1/5.2, kimi-k3/k2.7-code/k2.6, deepseek-v4-pro/flash,
  mimo-v2.5/pro, hy3)
- i18n en/zh: admin.groups.platforms.opencode
- types: opencode added to GroupPlatform/AccountPlatform

Author: luohui1

frontend/src/components/account/CreateAccountModal.vue

@@ -160,6 +160,19 @@
             <PlatformIcon platform="grok" size="sm" />
             Grok
           </button>
+          <button
+            type="button"
+            @click="form.platform = 'opencode'; accountCategory = 'apikey'"
+            :class="[
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
+              form.platform === 'opencode'
+                ? 'bg-white text-zinc-900 shadow-sm dark:bg-dark-600 dark:text-zinc-100'
+                : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
+            ]"
+          >
+            <PlatformIcon platform="opencode" size="sm" />
+            OpenCode Go
+          </button>
         </div>
       </div>
 
@@ -1127,7 +1140,9 @@
                   ? 'https://generativelanguage.googleapis.com'
                   : form.platform === 'grok'
                     ? 'https://api.x.ai/v1'
-                    : 'https://api.anthropic.com'
+                    : form.platform === 'opencode'
+                      ? 'https://opencode.ai/zen/go/v1'
+                      : 'https://api.anthropic.com'
             "
           />
           <p v-if="baseUrlHint" class="input-hint">{{ baseUrlHint }}</p>
@@ -1151,7 +1166,9 @@
                   ? 'AIza...'
                   : form.platform === 'grok'
                     ? 'xai-...'
-                    : 'sk-ant-...'
+                    : form.platform === 'opencode'
+                      ? 'sk-opencode-...'
+                      : 'sk-ant-...'
             "
           />
           <p v-if="apiKeyHint" class="input-hint">{{ apiKeyHint }}</p>
@@ -5113,7 +5130,9 @@ const handleSubmit = async () => {
         ? 'https://generativelanguage.googleapis.com'
         : form.platform === 'grok'
           ? 'https://api.x.ai/v1'
-          : 'https://api.anthropic.com'
+          : form.platform === 'opencode'
+            ? 'https://opencode.ai/zen/go/v1'
+            : 'https://api.anthropic.com'
 
   // Build credentials with optional model mapping
   const credentials: Record<string, unknown> = {
@@ -5294,6 +5313,17 @@ const createAccountAndFinish = async (
       delete credentials.model_mapping
     }
   }
+  if (platform === 'opencode') {
+    if (!credentials.base_url) {
+      credentials.base_url = apiKeyBaseUrl.value.trim() || 'https://opencode.ai/zen/go/v1'
+    }
+    const modelMapping = buildModelMappingObject(modelRestrictionMode.value, allowedModels.value, modelMappings.value)
+    if (modelMapping) {
+      credentials.model_mapping = modelMapping
+    } else {
+      delete credentials.model_mapping
+    }
+  }
   await doCreateAccount({
     name: form.name,
     notes: form.notes,

frontend/src/components/account/EditAccountModal.vue

@@ -43,7 +43,9 @@
                     ? 'https://cloudcode-pa.googleapis.com'
                     : account.platform === 'grok'
                       ? 'https://api.x.ai/v1'
-                      : 'https://api.anthropic.com'
+                      : account.platform === 'opencode'
+                        ? 'https://opencode.ai/zen/go/v1'
+                        : 'https://api.anthropic.com'
             "
           />
           <p v-if="baseUrlHint" class="input-hint">{{ baseUrlHint }}</p>
@@ -72,7 +74,9 @@
                     ? 'sk-...'
                     : account.platform === 'grok'
                       ? 'xai-...'
-                      : 'sk-ant-...'
+                      : account.platform === 'opencode'
+                        ? 'sk-opencode-...'
+                        : 'sk-ant-...'
             "
           />
           <p class="input-hint">{{ t('admin.accounts.leaveEmptyToKeep') }}</p>

frontend/src/components/common/PlatformIcon.vue

@@ -32,6 +32,11 @@
     <circle cx="18" cy="18" r="3" />
     <path stroke-linecap="round" stroke-linejoin="round" d="M8.7 10.7 15.3 7.3M8.7 13.3l6.6 3.4" />
   </svg>
+  <!-- OpenCode Go icon (terminal prompt) -->
+  <svg v-else-if="platform === 'opencode'" :class="sizeClass" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+    <polyline points="4 17 10 11 4 5" />
+    <line x1="12" y1="19" x2="20" y2="19" />
+  </svg>
   <!-- Fallback: generic platform icon -->
   <svg v-else :class="sizeClass" fill="currentColor" viewBox="0 0 24 24">
     <path

frontend/src/composables/useModelWhitelist.ts

@@ -160,6 +160,21 @@ const xaiModels = [
   'grok-imagine-video-1.5'
 ]
 
+// OpenCode Go (opencode 平台，OpenAI 兼容 chat/completions 端点模型)
+const opencodeModels = [
+  'grok-4.5',
+  'glm-5.2',
+  'glm-5.1',
+  'kimi-k3',
+  'kimi-k2.7-code',
+  'kimi-k2.6',
+  'deepseek-v4-pro',
+  'deepseek-v4-flash',
+  'mimo-v2.5',
+  'mimo-v2.5-pro',
+  'hy3'
+]
+
 // Cohere
 const cohereModels = [
   'command-a-03-2025',
@@ -240,6 +255,7 @@ const allModelsList: string[] = [
   ...mistralModels,
   ...metaModels,
   ...xaiModels,
+  ...opencodeModels,
   ...cohereModels,
   ...yiModels,
   ...moonshotModels,
@@ -423,6 +439,7 @@ export function getModelsByPlatform(platform: string): string[] {
     case 'meta': return metaModels
     case 'xai':
     case 'grok': return xaiModels
+    case 'opencode': return opencodeModels
     case 'cohere': return cohereModels
     case 'yi': return yiModels
     case 'moonshot': return moonshotModels

frontend/src/i18n/locales/en/admin/overview.ts

@@ -949,6 +949,7 @@ export default {
         gemini: 'Gemini',
         antigravity: 'Antigravity',
         grok: 'Grok',
+        opencode: 'OpenCode Go',
         composite: 'Composite',
       },
       deleteConfirm:

frontend/src/i18n/locales/zh/admin/overview.ts

@@ -882,6 +882,7 @@ export default {
         gemini: 'Gemini',
         antigravity: 'Antigravity',
         grok: 'Grok',
+        opencode: 'OpenCode Go',
         composite: 'Composite',
       },
       saving: '保存中...',

frontend/src/types/index.ts

@@ -525,7 +525,7 @@ export interface PaginationConfig {
 
 // ==================== API Key & Group Types ====================
 
-export type GroupPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'composite'
+export type GroupPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'opencode' | 'composite'
 
 export type VideoModelPrices = Record<string, Record<string, number>>
 
@@ -876,7 +876,7 @@ export interface UpdateGroupRequest {
 
 // ==================== Account & Proxy Types ====================
 
-export type AccountPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok'
+export type AccountPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'opencode'
 export type AccountType = 'oauth' | 'setup-token' | 'apikey' | 'upstream' | 'bedrock' | 'service_account'
 export type OAuthAddMethod = 'oauth' | 'setup-token'
 export type ProxyProtocol = 'http' | 'https' | 'socks5' | 'socks5h'

frontend/src/views/admin/GroupsView.vue

@@ -4614,6 +4614,7 @@ const platformOptions = computed(() => [
   { value: "gemini", label: "Gemini" },
   { value: "antigravity", label: "Antigravity" },
   { value: "grok", label: "Grok" },
+  { value: "opencode", label: "OpenCode Go" },
   { value: "composite", label: "Composite" },
 ]);
 
@@ -4624,6 +4625,7 @@ const platformFilterOptions = computed(() => [
   { value: "gemini", label: "Gemini" },
   { value: "antigravity", label: "Antigravity" },
   { value: "grok", label: "Grok" },
+  { value: "opencode", label: "OpenCode Go" },
   { value: "composite", label: "Composite" },
 ]);