refactor: 统一模型名称大小写并更新版本配置

- 调整代理配置，统一模型名称大小写并更新模型版本，优化代理与模型的对应关系。

oh-my-opencode.jsonc

@@ -2,17 +2,17 @@
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "google_auth": false,
   "agents": {
-    "Sisyphus": {
-      "model": "anthropic-gateway/claude-opus-4-5"
+    "sisyphus": {
+      "model": "anthropic-gateway/claude-opus-4-5-thinking"
     },
-    "librarian": {
-      "model": "google-gateway/gemini-3-flash"
+    "oracle": {
+      "model": "openai-gateway/gpt-5.2"
     },
     "explore": {
       "model": "opencode/grok-code"
     },
-    "oracle": {
-      "model": "opencode/glm-4.7-free"
+    "librarian": {
+      "model": "google-gateway/gemini-3-flash"
     },
     "frontend-ui-ux-engineer": {
       "model": "google-gateway/gemini-3-pro-high"