feat: 升级至 GPT-5.4 并调整代理模型分配

opencode.json

@@ -1,13 +1,12 @@
 {
   "$schema": "https://opencode.ai/config.json",
   "autoupdate": false,
-  "model": "openai/gpt-5.3-codex",
+  "model": "openai/gpt-5.4",
   "small_model": "openai/gpt-5.1-codex-mini",
   "experimental": {
     "disable_paste_summary": true
   },
   "plugin": ["oh-my-opencode@latest"],
-  "disabled_providers": ["opencode"],
   "provider": {
     "openai": {
       "npm": "@ai-sdk/openai",
@@ -16,11 +15,11 @@
         "apiKey": "{env:LITELLM_API_KEY}"
       },
       "models": {
-        "gpt-5.2": {
-          "name": "GPT-5.2",
+        "gpt-5.4": {
+          "name": "GPT-5.4",
           "reasoning": true,
-          "modalities": { "input": ["text", "image"], "output": ["text"] },
-          "limit": { "context": 400000, "input": 272000, "output": 128000 }
+          "modalities": { "input": ["text", "image", "pdf"], "output": ["text"] },
+          "limit": { "context": 1050000, "input": 922000, "output": 128000 }
         },
         "gpt-5.3-codex": {
           "name": "GPT-5.3-Codex",