feat: expand API coverage with new tools, params, and 90% test threshold

vitest.config.ts

@@ -8,10 +8,10 @@ export default defineConfig({
       include: ["src/**/*.ts"],
       exclude: ["src/index.ts"],
       thresholds: {
-        lines: 80,
-        functions: 80,
-        branches: 80,
-        statements: 80,
+        lines: 90,
+        functions: 90,
+        branches: 90,
+        statements: 90,
       },
     },
   },