feat: 更新模型与网关配置至最新版本

- 更新模型和网关配置，将模型标识符和网关基础URL升级为最新版本，并移除已废弃的模型选项。

opencode.jsonc

@@ -2,8 +2,8 @@
   "$schema": "https://opencode.ai/config.json",
   "autoupdate": "notify",
   "theme": "tokyonight",
-  "model": "gateway/claude-sonnet-4-5",
-  "small_model": "gateway/gemini-3-flash",
+  "model": "anthropic-gateway/claude-sonnet-4-5",
+  "small_model": "google-gateway/gemini-3-flash",
   "plugin": [
     "@tarquinen/opencode-dcp@latest",
     "@franlol/opencode-md-table-formatter@latest"
@@ -52,7 +52,7 @@
       "name": "Google Gateway",
       "npm": "@ai-sdk/google",
       "options": {
-        "baseURL": "http://10.0.1.1:8317/v1",
+        "baseURL": "http://10.0.1.1:8317/v1beta",
         "apiKey": "{env:CPA_API_KEY}"
       },
       "models": {
@@ -64,12 +64,6 @@
         },
         "gemini-3-flash": {
           "name": "Gemini 3 Flash"
-        },
-        "gpt-5.2": {
-          "name": "GPT-5.2"
-        },
-        "gpt-5.2-codex": {
-          "name": "GPT-5.2-Codex"
         }
       }
     },