feat: upgrade development environment to Node.js 24 (#340)

- Updated devcontainer to use Node.js 24 image
- Updated .node-version from 22 to 24
- Upgraded @types/node to ^24.10.4
- Added prettier as dev dependency (removed from devcontainer feature)
- Kept package.json engines.node at >=20 (GitHub Action runtime requirement)
- Split lint workflow into separate TypeScript and codebase jobs
- Updated documentation in copilot-instructions.md and CONTRIBUTING.md
- Regenerated package-lock.json with Node 24
- Verified all tests pass (501/501) with 100% coverage
- All lint and type checks pass"

Author: virgofx

.devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
-  "name": "typescript-node:22",
-  "image": "mcr.microsoft.com/devcontainers/typescript-node:22",
+  "name": "typescript-node:24",
+  "image": "mcr.microsoft.com/devcontainers/typescript-node:24",
   "mounts": [
     "source=${localWorkspaceFolderBasename}-node_modules,target=${containerWorkspaceFolder}/node_modules,type=volume"
   ],
@@ -51,7 +51,6 @@
     "GITHUB_TOKEN": "${localEnv:GITHUB_TOKEN}"
   },
   "features": {
-    "ghcr.io/devcontainers/features/github-cli:1": {},
-    "ghcr.io/devcontainers-community/npm-features/prettier": {}
+    "ghcr.io/devcontainers/features/github-cli:1": {}
   }
 }

.github/copilot-instructions.md

@@ -6,7 +6,8 @@ monorepos. Creates module-specific Git tags, GitHub releases, PR comments, and c
 ## Tech Stack
 
 - **TypeScript 5.9+** with strict mode
-- **Node.js 22+** for local development (`.node-version`); compiles to Node.js 20+ compatible output
+- **Node.js 24+** for local development (`.node-version`); compiles to Node.js 20+ compatible output for GitHub Actions
+  runtime (action.yml uses `node20`)
 - **Vitest** for testing with V8 coverage
 - **Biome** for linting/formatting (not ESLint/Prettier)
 - **@actions/core** and **@octokit** for GitHub integration

.github/workflows/lint.yml

@@ -14,8 +14,8 @@ permissions:
   statuses: write # To report GitHub Actions status checks
 
 jobs:
-  lint:
-    name: Lint Codebase
+  lint-typescript:
+    name: Lint TypeScript
     runs-on: ubuntu-latest
 
     steps:
@@ -37,11 +37,23 @@ jobs:
         id: npm-ci
         run: npm ci --no-fund
 
-      - name: Lint Typescript
+      - name: Lint TypeScript with Biome
         id: biome
         run: npm run check
 
-      - name: Lint Codebase
+  lint-codebase:
+    name: Lint Codebase
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Lint Codebase with Super-Linter
         id: super-linter
         uses: super-linter/super-linter@502f4fe48a81a392756e173e39a861f8c8efe056 # v8.3.0
         env:

.node-version

@@ -1 +1 @@
-22
+24

CONTRIBUTING.md

@@ -58,7 +58,7 @@ Before contributing, please:
 
 ### Prerequisites
 
-- **Node.js**: Version 20 or higher (see [.node-version](./.node-version) for the exact version)
+- **Node.js**: Version 24 or higher (see [.node-version](./.node-version) for the exact version)
 - **npm**: Comes with Node.js
 - **Git**: For version control
 

package-lock.json

@@ -68,13 +68,14 @@
     "@octokit/types": "^16.0.0",
     "@octokit/webhooks-types": "^7.6.1",
     "@types/js-yaml": "^4.0.9",
-    "@types/node": "^22.17.2",
+    "@types/node": "^24.10.4",
     "@types/which": "^3.0.4",
     "@vercel/ncc": "^0.38.4",
     "@vitest/coverage-v8": "^3.1.3",
     "js-yaml": "^4.1.1",
     "make-coverage-badge": "^1.2.0",
     "openai": "^6.9.1",
+    "prettier": "^3.7.4",
     "textlint": "^15.4.0",
     "textlint-filter-rule-comments": "^1.2.2",
     "textlint-rule-terminology": "^5.2.16",