fix(provider.anthropic): Fix Anthropic research tool identifier and add tests + local Claude permissions

ts/provider.anthropic.ts

@@ -253,7 +253,7 @@ export class AnthropicProvider extends MultiModalModel {
       // Build the tool configuration for web search
       const tools = this.options.enableWebSearch ? [
         {
-          type: 'computer_20241022' as const,
+          type: 'web_search_20250305' as const,
           name: 'web_search',
           description: 'Search the web for current information',
           input_schema: {