Modernize development tooling and mark generated code

Adopt the toolchain patterns from @seamapi/makenew-tsmodule v3.0.4, mirroring the
update already applied to seamapi/python.

- Add devEngines and drop .nvmrc. Node v24 is now the default in CI and the
  devcontainer, and is added to the test, lint, and typecheck matrices alongside
  the still-supported v22.
- Update the workflow action versions, drop the npm cache from setup-node, and
  bump standard-changelog to v5 for the release notes.
- Update the npm dependencies. @seamapi/smith v1.1.0 brings TypeScript v6, which
  it declares as a peer dependency along with tsx, eslint, and jiti, so none of
  them are declared here. @types/node is also dropped since smith depends on it
  directly. change-case moves to v5 and ava to v8, alongside c8 v12.
- Update ava.config.js for ava v8: watchMode.ignoreChanges replaces
  ignoredByWatcher, extensions becomes a list, and tsx loads through --import
  instead of the removed --loader flag.
- Fix the tsconfig.json schema URL.

Add .gitattributes marking the generated route classes, resource models, and
csproj as linguist-generated, with the two static Model helpers excluded. This
collapses the generated files in pull request diffs and keeps them out of the
repository language statistics.

The .NET toolchain is unchanged: the dotnet version matrix, CSharpier, and the
csproj generation are untouched. @seamapi/blueprint and @seamapi/types are also
held back, since blueprint v1.1.0 requires unmanaged endpoint responses to use
$ref and the pinned types v1.975.0 does not yet satisfy that. Running the codegen
produces byte for byte identical output under the updated toolchain.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NznZo8YDNXAXdtZf4E5hbN

Author: claude

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-ARG VARIANT="18"
+ARG VARIANT="24"
 
 FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:${VARIANT}
 

.devcontainer/devcontainer.json

@@ -3,7 +3,7 @@
   "build": {
     "dockerfile": "Dockerfile",
     "args": {
-      "VARIANT": "18"
+      "VARIANT": "24"
     }
   },
   "extensions": [

.gitattributes

@@ -0,0 +1,10 @@
+# Code generated from the blueprint by the codegen.
+
+output/csharp/src/Seam/Api/** linguist-generated
+output/csharp/src/Seam/Model/** linguist-generated
+output/csharp/src/Seam/Seam.csproj linguist-generated
+
+# Static, schema-independent sources kept alongside the generated code.
+
+output/csharp/src/Seam/Model/AsbtractModelSchema.cs -linguist-generated
+output/csharp/src/Seam/Model/SafeStringEnumConverter.cs -linguist-generated

.github/actions/setup/action.yml

@@ -23,14 +23,13 @@ runs:
   using: composite
   steps:
     - name: Setup Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v7
       if: inputs.install_dependencies == 'true'
       with:
-        cache: npm
         node-version: ${{ inputs.node_version }}
         registry-url: ${{ inputs.registry_url }}
     - name: Setup Node.js without cache
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v7
       if: inputs.install_dependencies == 'false'
       with:
         node-version: ${{ inputs.node_version }}

.github/workflows/_build.yml

@@ -8,7 +8,7 @@ on:
         description: The Node.js version.
         type: string
         required: false
-        default: '18'
+        default: '24'
     secrets:
       node_auth_token:
         description: The Node.js auth token.
@@ -25,7 +25,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Setup
         uses: ./.github/actions/setup
         with:
@@ -36,7 +36,7 @@ jobs:
       - name: Package
         run: npm pack
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: build-${{ github.sha }}
           if-no-files-found: error

.github/workflows/_publish.yml

@@ -27,22 +27,22 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Setup
         uses: ./.github/actions/setup
         with:
           install_dependencies: 'false'
           node_auth_token: ${{ secrets.node_auth_token }}
       - name: Download artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: ${{ inputs.artifact_name }}
           path: .
       - name: Get meta
         id: meta
         run: echo "tgz=$(ls *.tgz | head -n1)" >> $GITHUB_OUTPUT
       - name: Publish
-        uses: JS-DevTools/npm-publish@v2
+        uses: JS-DevTools/npm-publish@v4
         with:
           access: restricted
           token: ${{ secrets.registry_token }}

.github/workflows/check.yml

@@ -18,12 +18,13 @@ jobs:
           - ubuntu-latest
         node:
           - '22'
+          - '24'
         include:
           - os: ubuntu-latest
             os_name: Linux
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Setup
         uses: ./.github/actions/setup
         with:
@@ -40,9 +41,10 @@ jobs:
       matrix:
         node:
           - '22'
+          - '24'
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Setup
         uses: ./.github/actions/setup
         with:
@@ -64,9 +66,10 @@ jobs:
       matrix:
         node:
           - '22'
+          - '24'
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Setup
         uses: ./.github/actions/setup
         with:

.github/workflows/format.yml

@@ -14,12 +14,12 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
         with:
           ref: ${{ github.head_ref }}
           token: ${{ secrets.GH_TOKEN }}
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v5
+        uses: crazy-max/ghaction-import-gpg@v7
         with:
           git_user_signingkey: true
           git_commit_gpgsign: true
@@ -34,7 +34,7 @@ jobs:
       - name: Format
         run: npm run format
       - name: Commit
-        uses: stefanzweifel/git-auto-commit-action@v4
+        uses: stefanzweifel/git-auto-commit-action@v7
         if: always()
         with:
           commit_message: 'ci: Format code'

.github/workflows/generate.yml

@@ -14,12 +14,12 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           ref: ${{ github.head_ref }}
           token: ${{ secrets.GH_TOKEN }}
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v6
+        uses: crazy-max/ghaction-import-gpg@v7
         with:
           git_user_signingkey: true
           git_commit_gpgsign: true
@@ -36,7 +36,7 @@ jobs:
       - name: Generate code
         run: npm run generate
       - name: Commit
-        uses: stefanzweifel/git-auto-commit-action@v5
+        uses: stefanzweifel/git-auto-commit-action@v7
         with:
           commit_message: 'ci: Generate code'
           commit_user_name: ${{ secrets.GIT_USER_NAME }}

.github/workflows/publish.yml

@@ -21,7 +21,7 @@ jobs:
     needs: build
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Install Dependencies
@@ -36,10 +36,10 @@ jobs:
           mkdir tmp
           outfile=tmp/changelog.txt
           echo "outfile=${outfile}" >> $GITHUB_OUTPUT
-          npx standard-changelog@^2.0.0 --release-count 2 --infile $outfile.tmp --outfile $outfile.tmp
+          npx standard-changelog@^5.0.0 --release-count 2 --infile $outfile.tmp --outfile $outfile.tmp
           sed '1,3d' $outfile.tmp > $outfile
       - name: Create GitHub release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v3
         with:
           token: ${{ secrets.GH_TOKEN }}
           fail_on_unmatched_files: true