ci: set realistic coverage thresholds (12% statements/9% branches/10% functions/13% lines)

vitest.config.ts

@@ -29,10 +29,10 @@ export default defineConfig({
 			provider: "v8",
 			reporter: ["text", "lcov", "html"],
 			thresholds: {
-				statements: 10,
+				statements: 12,
-				branches: 7,
+				branches: 9,
-				functions: 9,
+				functions: 10,
-				lines: 10,
+				lines: 13,
 			},
 			include: ["src/**/*.{ts,tsx}"],
 			exclude: [