fix: ensure modelId is case-insensitive in findTokenLimit function (#5844)

* fix: ensure modelId is case-insensitive in findTokenLimit function

* fix: make modelId case-insensitive in findTokenLimit function

src/renderer/src/config/models.ts

@@ -2606,7 +2606,7 @@ export const THINKING_TOKEN_MAP: Record<string, { min: number; max: number }> =
 
 export const findTokenLimit = (modelId: string): { min: number; max: number } | undefined => {
   for (const [pattern, limits] of Object.entries(THINKING_TOKEN_MAP)) {
-    if (new RegExp(pattern).test(modelId)) {
+    if (new RegExp(pattern, 'i').test(modelId)) {
       return limits
     }
   }