fix(fmt): fix prettier violations blocking CI

Auto-format tool-vault.ts and exclude .claude/ from prettier checks.

The .claude/ directory is local tooling config, not project source.

Author: marceloceccon

.prettierignore

@@ -2,5 +2,6 @@ dist/
 node_modules/
 coverage/
 .clashcode/
+.claude/
 pnpm-lock.yaml
 *.md

src/core/clash-engine/tool-vault.ts

@@ -74,9 +74,7 @@ export class ToolVault {
   }
 
   /** Get OpenAI-format tool definitions for a set of tool names. */
-  toOpenAIFormat(
-    names?: string[],
-  ): Array<{
+  toOpenAIFormat(names?: string[]): Array<{
     type: 'function'
     function: { name: string; description: string; parameters: Record<string, unknown> }
   }> {