fix: remove src/shared from tsconfig.node.json to resolve TS6305

The shared types are already covered by the root tsconfig.json include.
Including them in tsconfig.node.json with composite:true caused TS6305.
Also fix unused isCustom parameter in ModelEditor.

Co-Authored-By: DeepSeek V4 Pro <noreply@deepseek.com>

Author: bennylii

src/renderer/src/components/models/ModelEditor.tsx

@@ -200,7 +200,7 @@ export function ModelEditor({
     }
   }
 
-  const renderModelTable = (modelList: EffectiveModel[], isCustom: boolean) => {
+  const renderModelTable = (modelList: EffectiveModel[], _isCustom: boolean) => {
     if (modelList.length === 0) {
       return (
         <div className="text-center py-8 text-muted-foreground border rounded-lg">

tsconfig.node.json

@@ -15,7 +15,6 @@
     "electron.vite.config.ts",
     "src/main/**/*.ts",
     "src/preload/**/*.ts",
-    "src/shared/**/*.ts",
     "src/types/**/*.d.ts",
     "src/main/types/**/*.d.ts"
   ]