Upgrade chipsandcode to Node.js 26 LTS

.nvmrc

@@ -1 +1 @@
-24
+26

README.md

@@ -64,7 +64,7 @@ Major features, ordered by priority:
 
 ## Developing
 
-Use Node.js 24 (`nvm use`) and install the locked dependencies:
+Use Node.js 26 (`nvm use`) and install the locked dependencies:
 
 ```bash
 npm ci
@@ -85,9 +85,9 @@ npm run preview -- --host 127.0.0.1
 npm run test:cy
 ```
 
-The production build generates `.vercel/output` using `@sveltejs/adapter-vercel`; it does not need database credentials. Lessons and the new-experiment page are prerendered. Shared experiment pages load on the client, and the API runs on Node.js 24 functions. The PWA precaches application assets and lessons; private API responses are never cached.
+The production build generates `.vercel/output` using `@sveltejs/adapter-vercel`; it does not need database credentials. Lessons and the new-experiment page are prerendered. Shared experiment pages load on the client, and the API runs on Node.js 26 functions. The PWA precaches application assets and lessons; private API responses are never cached.
 
-Unit tests live next to the source and include parser fixtures, simulator behavior, ownership checks, origin checks and migration validation. Cypress retains the existing accessibility and visual-regression checks. CI uses Node.js 24 and `npm ci` and runs typing, coverage, builds and Cypress on pull requests.
+Unit tests live next to the source and include parser fixtures, simulator behavior, ownership checks, origin checks and migration validation. Cypress retains the existing accessibility and visual-regression checks. CI uses Node.js 26 and `npm ci` and runs typing, coverage, builds and Cypress on pull requests.
 
 ## Deployment and data migration
 

docs/vercel-migration.md

@@ -21,7 +21,7 @@ Import `durasj/chipsandcode` into the `durasjs-projects` team. Use these setting
 | Project name        | `chipsandcode`                              |
 | Framework           | SvelteKit                                   |
 | Root directory      | Repository root                             |
-| Node.js             | 24.x                                        |
+| Node.js             | 26.x                                        |
 | Install command     | `npm ci`                                    |
 | Build command       | `npm run build`                             |
 | Output directory    | Framework default; leave the override unset |

package.json

@@ -37,7 +37,7 @@
     "@testing-library/svelte": "5.4.2",
     "@types/katex": "^0.16.2",
     "@types/nearley": "^2.11.2",
-    "@types/node": "^24.0.0",
+    "@types/node": "^26.6.6",
     "@vite-pwa/assets-generator": "2.0.0",
     "@vite-pwa/sveltekit": "2.0.0",
     "@vitest/browser": "5.1.0",
@@ -99,7 +99,7 @@
   },
   "type": "module",
   "engines": {
-    "node": "24.x"
+    "node": "26.x"
   },
   "imports": {
     "#lib/*": "./src/lib/*",

vite.config.js

@@ -24,7 +24,7 @@ const config = defineConfig(() => {
       contentPlugin(),
       withPwa(
         {
-          adapter: adapter({ runtime: 'nodejs24.x' }),
+          adapter: adapter({ runtime: 'nodejs26.x' }),
           preprocess: vitePreprocess({ script: true }),
           prerender: {
             entries: ['*', '/learn/hardware/boolean-logic'],