Migrate CLI E2E tests to Node.js 26

Run the CLI subprocess suites and benchmark tools as native TypeScript with
node:test, and move them under test/e2e-cli.

Update CI and Compose runners, run local smoke tests on Linux, macOS, and
Windows, and collect source-mapped CLI coverage with c8.

vitest.config.integration.ts

@@ -19,7 +19,7 @@ export default mergeConfig(
             logHeapUsage: true,
             name: "integration-tests",
             include: ["**/*.integration.spec.ts", "**/*.integration.test.ts"],
-            exclude: ["test/**", "src/apps/**/testdeno/**"],
+            exclude: ["test/**"],
         },
     })
 );