chore: pin Node to 22.22 via .nvmrc and engines

Add a repo-root .nvmrc and an engines.node range (>=22.22.0 <22.23.0) to the root and every example-app package.json, then point all CI workflows at node-version-file: .nvmrc instead of a hardcoded version so local and CI toolchains stay in lockstep. Each workflow also logs node/npm versions for diagnostics.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: thephez

.github/workflows/dashnote-e2e.yml

@@ -45,7 +45,12 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
-          node-version: 24
+          node-version-file: .nvmrc
+
+      - name: Show Node/npm versions
+        run: |
+          node -v
+          npm -v
 
       - name: Install dashnote dependencies
         run: npm ci
@@ -107,7 +112,12 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
-          node-version: 24
+          node-version-file: .nvmrc
+
+      - name: Show Node/npm versions
+        run: |
+          node -v
+          npm -v
 
       - name: Install dashnote dependencies
         run: npm ci

.github/workflows/test-tutorials.yml

@@ -35,7 +35,11 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
-          node-version: '20'
+          node-version-file: .nvmrc
+      - name: Show Node/npm versions
+        run: |
+          node -v
+          npm -v
       - run: npm ci
       - name: Run read-only tutorial tests
         env:
@@ -56,7 +60,11 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
-          node-version: '20'
+          node-version-file: .nvmrc
+      - name: Show Node/npm versions
+        run: |
+          node -v
+          npm -v
       - run: npm ci
       - name: Run read-write tutorial tests
         env:

.nvmrc

@@ -0,0 +1 @@
+22.22

example-apps/dashmint-lab/package-lock.json

@@ -5,6 +5,9 @@
   "private": true,
   "version": "0.0.0",
   "type": "module",
+  "engines": {
+    "node": ">=22.22.0 <22.23.0"
+  },
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",