refactor(fsd): consolidate src/lib into shared, move test setup to shared/config/tests

vitest.config.ts

@@ -20,9 +20,9 @@ export default defineConfig({
 	test: {
 		globals: true,
 		environment: "jsdom",
-		setupFiles: ["./src/tests/setup.ts"],
-		include: ["src/**/*.{test,spec}.{js,ts}"],
-		exclude: ["src/tests/e2e/**/*.{test,spec}.{js,ts}"],
+		setupFiles: ["./src/shared/config/tests/setup.ts"],
+		include: ["src/**/*.test.{js,ts}"],
+		exclude: ["src/**/*.e2e.{js,ts}"],
 		projects: [
 			{
 				extends: true,
@@ -52,7 +52,7 @@ export default defineConfig({
 	},
 	resolve: {
 		alias: {
-			$lib: path.resolve("./src/lib"),
+			$lib: path.resolve("./src/shared/lib"),
 			$shared: path.resolve("./src/shared"),
 			$pages: path.resolve("./src/pages"),
 			$features: path.resolve("./src/features"),