docs: switch spectrum-ts docs to git source (#111)

Author: qwerzl

.github/workflows/typecheck-docs.yml

@@ -28,7 +28,26 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Parse repository
+        id: parse-repo
+        run: |
+          echo "owner=${GITHUB_REPOSITORY%/*}" >> "$GITHUB_OUTPUT"
+          echo "name=${GITHUB_REPOSITORY#*/}" >> "$GITHUB_OUTPUT"
+
+      - name: Generate GitHub App token
+        id: app-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          owner: ${{ steps.parse-repo.outputs.owner }}
+          repositories: |
+            ${{ steps.parse-repo.outputs.name }}
+            spectrum-ts
+
       - uses: actions/checkout@v4
+        with:
+          token: ${{ steps.app-token.outputs.token }}
 
       - uses: pnpm/action-setup@v4
 
@@ -43,6 +62,7 @@ jobs:
         run: pnpm docs:generate
         env:
           DOCS_SOURCE_MODE: git
+          GITHUB_TOKEN: ${{ steps.app-token.outputs.token }}
 
       - name: Typecheck documentation code blocks
         run: pnpm typecheck:docs