feat(presets): add OpenCode Go referral link and promo copy without partner badge

Decouple the in-app promotion banner from isPartner so a preset can show a
promo phrase plus referral link without earning the paid-partner star.

- ApiKeySection: gate the banner on partnerPromotionKey alone; the star is
  still driven solely by isPartner. This also un-suppresses the existing
  MiniMax cn/en promos, which already carried copy without isPartner.
- OpenCode Go (claude/codex/opencode): point apiKeyUrl at the referral
  link and add partnerPromotionKey "opencode_go" (no isPartner set).
- i18n: add the opencode_go promo string across zh/en/ja/zh-TW.

src/components/providers/forms/shared/ApiKeySection.tsx

@@ -29,7 +29,6 @@ export function ApiKeySection({
   websiteUrl,
   placeholder,
   disabled,
-  isPartner,
   partnerPromotionKey,
 }: ApiKeySectionProps) {
   const { t } = useTranslation();
@@ -73,8 +72,8 @@ export function ApiKeySection({
             })}
           </a>
 
-          {/* 合作伙伴促销信息 */}
-          {isPartner && partnerPromotionKey && (
+          {/* 促销信息（与 isPartner 解耦：仅凭 partnerPromotionKey 即可展示，星标仍由 isPartner 控制） */}
+          {partnerPromotionKey && (
             <div className="rounded-md bg-blue-50 dark:bg-blue-950/30 p-2.5 border border-blue-200 dark:border-blue-800">
               <p className="text-xs leading-relaxed text-blue-700 dark:text-blue-300">
                 💡{" "}

src/config/claudeProviderPresets.ts

@@ -282,7 +282,8 @@ export const providerPresets: ProviderPreset[] = [
   {
     name: "OpenCode Go",
     websiteUrl: "https://opencode.ai/go",
-    apiKeyUrl: "https://opencode.ai/auth",
+    apiKeyUrl: "https://opencode.ai/go?ref=2YTRG2NGTX",
+    partnerPromotionKey: "opencode_go",
     settingsConfig: {
       env: {
         ANTHROPIC_BASE_URL: "https://opencode.ai/zen/go",

src/config/codexProviderPresets.ts

@@ -802,7 +802,8 @@ requires_openai_auth = true`,
   {
     name: "OpenCode Go",
     websiteUrl: "https://opencode.ai/go",
-    apiKeyUrl: "https://opencode.ai/auth",
+    apiKeyUrl: "https://opencode.ai/go?ref=2YTRG2NGTX",
+    partnerPromotionKey: "opencode_go",
     auth: generateThirdPartyAuth(""),
     config: generateThirdPartyConfig(
       "opencode_go",

src/config/opencodeProviderPresets.ts

@@ -1049,7 +1049,8 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
   {
     name: "OpenCode Go",
     websiteUrl: "https://opencode.ai/go",
-    apiKeyUrl: "https://opencode.ai/auth",
+    apiKeyUrl: "https://opencode.ai/go?ref=2YTRG2NGTX",
+    partnerPromotionKey: "opencode_go",
     settingsConfig: {
       npm: "@ai-sdk/openai-compatible",
       name: "OpenCode Go",

src/i18n/locales/en.json

@@ -1006,6 +1006,7 @@
       "runapi": "RunAPI offers special benefits for CC Switch users. Register via this link and contact customer support to claim ¥14 free credit.",
       "minimax_cn": "MiniMax Coding Plan Special Offer, Starter from ¥9.9",
       "minimax_en": "MiniMax Coding Plan Black Friday, Starter is now $2/mo (80% OFF!)",
+      "opencode_go": "Subscribe to OpenCode Go via this link — only $5 for your first month, plus an extra $5 in credit!",
       "dmxapi": "Claude Code exclusive model 66% OFF now!",
       "cubence": "Cubence is an official partner of CC Switch. Register using this link and enter \"CCSWITCH\" promo code during recharge to get 10% off every top-up",
       "aigocode": "AIGoCode is an official partner of CC Switch. Register using this link and get 10% bonus credit on your first top-up!",

src/i18n/locales/ja.json

@@ -1006,6 +1006,7 @@
       "runapi": "RunAPI は CC Switch ユーザーに特別な特典を提供しています。このリンクから登録しカスタマーサポートにご連絡いただくと、¥14 の無料クレジットを受け取ることができます。",
       "minimax_cn": "MiniMax Coding Plan 特別価格、Starter ¥9.9 から",
       "minimax_en": "MiniMax Coding Plan Black Friday、Starter が月額 $2（80% OFF）",
+      "opencode_go": "このリンクから OpenCode Go を購読すると、初月はわずか $5、さらに $5 分のクレジットがもらえます！",
       "dmxapi": "Claude Code 専用モデル 66% OFF 実施中！",
       "cubence": "Cubence は CC Switch の公式パートナーです。登録後チャージ時に \"CCSWITCH\" を入力すると、毎回 10% オフ",
       "aigocode": "AIGoCode は CC Switch の公式パートナーです。このリンクから登録すると、初回チャージ時に 10% のボーナスクレジットがもらえます！",

src/i18n/locales/zh-TW.json

@@ -977,6 +977,7 @@
       "runapi": "RunAPI 為 CC Switch 的使用者提供了特別福利，透過此連結註冊並聯繫客服可領取 ¥14 免費額度。",
       "minimax_cn": "MiniMax Coding Plan 特惠，Starter 方案 9.9 元起",
       "minimax_en": "MiniMax Coding Plan 黑五特惠，Starter 方案現僅 $2 / 月（2 折優惠！）",
+      "opencode_go": "使用此連結訂閱 OpenCode Go，首月僅需 $5，並可獲得額外的 $5 額度！",
       "dmxapi": "Claude Code 專屬模型 3.4 折優惠進行中！",
       "cubence": "Cubence 是 CC Switch 的官方合作夥伴，使用此連結註冊並在儲值時填寫「CCSWITCH」優惠碼，每次儲值均可享受 9 折優惠",
       "aigocode": "AIGoCode 是 CC Switch 的官方合作夥伴，使用此連結註冊首次儲值時可以獲得 10% 額度獎勵！",

src/i18n/locales/zh.json

@@ -1006,6 +1006,7 @@
       "runapi": "RunAPI 为 CC Switch 的用户提供了特别福利，通过此链接注册并联系客服可领取 ¥14 免费额度。",
       "minimax_cn": "MiniMax Coding Plan 特惠，Starter 套餐 9.9 元起",
       "minimax_en": "MiniMax Coding Plan 黑五特惠，Starter 套餐现仅 $2/月（2折优惠！）",
+      "opencode_go": "使用此链接订阅 OpenCode Go，首月只需 $5，并可获得额外的 $5 额度！",
       "dmxapi": "Claude Code 专属模型 3.4 折优惠进行中！",
       "cubence": "Cubence 是 CC Switch 的官方合作伙伴，使用此链接注册并在充值时填写 \"CCSWITCH\" 优惠码，每次充值均可享受9折优惠",
       "aigocode": "AIGoCode 是 CC Switch 的官方合作伙伴，使用此链接注册首次充值时可以获得10%额度奖励！",