test(core): cover base schema + respond; neutralize tunnel log prefix

packages/core/vitest.config.ts

@@ -3,6 +3,11 @@ import { defineConfig } from 'vitest/config'
 export default defineConfig({
     test: {
         include: ['test/unit/**/*.test.ts'],
-        coverage: { provider: 'v8', include: ['src/**'], thresholds: { lines: 90, functions: 90 } }
+        coverage: {
+            provider: 'v8',
+            include: ['src/**'],
+            exclude: ['src/index.ts'],
+            thresholds: { lines: 90, functions: 90 }
+        }
     }
 })