diff --git a/internal/lua/plugins/channels.lua b/internal/lua/plugins/channels.lua
index 911a4b0..d30dc90 100644
--- a/internal/lua/plugins/channels.lua
+++ b/internal/lua/plugins/channels.lua
@@ -492,6 +492,12 @@ local PLATFORMS = {
     hosts = { "accounts.google.com", "oauth2.googleapis.com", "cloudcode-pa.googleapis.com" },
     base_url = "https://cloudcode-pa.googleapis.com",
     adapter = "gemini",
+    -- ⚠️ Cloud Code 凭据**不能**打公开的 /v1beta/models/{model}:generateContent；
+    -- 参考 gemini.ts:78 明确走私有动词路径 /v1internal:generateContent
+    -- （流式 /v1internal:streamGenerateContent?alt=sse）。用声明式 endpoint
+    -- 覆盖，内核只当不透明字符串。
+    endpoint = "/v1internal:generateContent",
+    endpoint_stream = "/v1internal:streamGenerateContent?alt=sse",
     models = { "gemini-3.1-flash-lite-preview", "gemini-3.1-flash-preview" },
   },
 
@@ -2923,16 +2929,21 @@ local function syncAccountSource(provider, accountId)
   end
   -- 重建：先 remove（容错：源可能不存在）再 add
   __llmsproxy_kernel.call("remove_source", { name = name })
-  local r, aerr = __llmsproxy_kernel.call("add_source", {
-    source = {
-      name = name,
-      base_url = plat.base_url,
-      adapter = plat.adapter or "openai",
-      api_key = tok,
-      max_concurrent = 2,
-      models = models,
-    },
-  })
+  local src = {
+    name = name,
+    base_url = plat.base_url,
+    adapter = plat.adapter or "openai",
+    api_key = tok,
+    max_concurrent = 2,
+    models = models,
+  }
+  -- 平台的 chat 端点常与 base_url 不是简单拼接（Gemini 走私有
+  -- /v1internal: 动词、zcode 只有一条 plan 路径）。声明式覆盖，内核只当
+  -- 不透明字符串用 —— 不需要内核知道任何厂商知识。
+  if plat.endpoint then src.endpoint = plat.endpoint end
+  if plat.endpoint_stream then src.endpoint_stream = plat.endpoint_stream end
+  if plat.headers_extra then src.headers = plat.headers_extra end
+  local r, aerr = __llmsproxy_kernel.call("add_source", { source = src })
   if aerr then logEvent("接入源失败 " .. name .. ": " .. aerr)
   else logEvent("已同步源 " .. name .. "（" .. #models .. " 模型）") end
 end