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.

test/e2e-cli/tsconfig.json

@@ -0,0 +1,17 @@
+{
+    "compilerOptions": {
+        "target": "ESNext",
+        "module": "NodeNext",
+        "moduleResolution": "NodeNext",
+        "lib": ["ESNext", "DOM", "DOM.Iterable"],
+        "types": ["node"],
+        "strict": true,
+        "skipLibCheck": true,
+        "noEmit": true,
+        "allowImportingTsExtensions": true,
+        "verbatimModuleSyntax": true,
+        "erasableSyntaxOnly": true,
+        "resolveJsonModule": true
+    },
+    "include": ["**/*.ts"]
+}