ci: run on Node 24 and require Node 22+

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: pnpm
       - run: pnpm install --frozen-lockfile --filter @headless/app
       - name: Context pruning suite
@@ -94,7 +94,7 @@ jobs:
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: pnpm
       - run: pnpm install --frozen-lockfile --filter @headless/web
       - run: pnpm --filter @headless/web lint

CONTRIBUTING.md

@@ -29,7 +29,7 @@ architecture-decision entry **before** the implementation lands.
 ## Development setup
 
 ```sh
-pnpm install                 # workspace tooling (Node 20+, pnpm 9)
+pnpm install                 # workspace tooling (Node 22+, pnpm 9)
 pnpm test                    # protocol/security suite — needs a Swift toolchain
 pnpm test:runtime            # jsdom context-pruning suite — Node only
 pnpm test:e2e:linux          # Docker + sandboxed Chromium E2E

package.json

@@ -12,7 +12,7 @@
     "test:e2e:linux": "pnpm --filter @headless/app test:e2e:linux"
   },
   "engines": {
-    "node": ">=20",
+    "node": ">=22",
     "pnpm": ">=9"
   },
   "packageManager": "pnpm@9.15.0"