style: auto-fix ESLint issues (curly braces and formatting)

- Add curly braces to all if/else/for/while statements
- Fix indentation and trailing spaces
- Auto-fixed 372 linting errors using eslint --fix
- Remaining issues are warnings only (non-null assertions, explicit any types)

src/tools/registry.ts

@@ -81,7 +81,7 @@ export class ToolRegistry {
 
   /** Return tools filtered by the policy for a given context. */
   filteredList(context?: ToolPolicyContext): Tool[] {
-    if (!this._policy) return this.list();
+    if (!this._policy) {return this.list();}
     return this._policy.filterTools(this.list(), context);
   }