ci: consolidate star fetch into deploy workflow using Actions cache

Replace the separate fetch-github-stars.yml workflow (which committed
star data back to git) with an inline fetch step in deploy-website.yml.
Star data is now stored in Actions cache between runs, eliminating the
workflow_run trigger chain and the need to track github_stars.json in
the repository.

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/deploy-website.yml

@@ -4,10 +4,8 @@ on:
   push:
     branches:
       - master
-  workflow_run:
-    workflows: ["Fetch GitHub Stars"]
-    types: [completed]
-    branches: [master]
+  schedule:
+    - cron: "0 0 * * *"
 
 permissions:
   contents: read
@@ -20,7 +18,6 @@ concurrency:
 
 jobs:
   build:
-    if: github.event_name == 'push' || github.event.workflow_run.conclusion == 'success'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
@@ -33,6 +30,37 @@ jobs:
       - name: Install dependencies
         run: uv sync --group build
 
+      - name: Restore star data cache
+        id: cache-stars
+        uses: actions/cache/restore@v4
+        with:
+          path: website/data/github_stars.json
+          key: github-stars-${{ github.run_id }}
+          restore-keys: github-stars-
+
+      - name: Fetch GitHub stars
+        if: github.event_name == 'schedule'
+        id: fetch-stars
+        continue-on-error: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: make fetch_github_stars
+
+      - name: Save star data cache
+        if: steps.fetch-stars.outcome == 'success'
+        uses: actions/cache/save@v4
+        with:
+          path: website/data/github_stars.json
+          key: github-stars-${{ github.run_id }}
+
+      - name: Verify star data exists
+        run: |
+          if [ ! -f website/data/github_stars.json ]; then
+            echo "::error::github_stars.json not found. No cache and fetch failed or was skipped."
+            exit 1
+          fi
+          echo "Star data found: $(wc -l < website/data/github_stars.json) lines"
+
       - name: Build site
         run: make build
 

.github/workflows/fetch-github-stars.yml

@@ -1,39 +0,0 @@
-name: Fetch GitHub Stars
-
-on:
-  schedule:
-    - cron: "0 0 * * *"
-
-permissions:
-  contents: write
-
-jobs:
-  fetch:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Install uv
-        uses: astral-sh/setup-uv@v7
-        with:
-          enable-cache: true
-
-      - name: Install dependencies
-        run: uv sync --group build
-
-      - name: Fetch GitHub stars
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: make fetch_github_stars
-
-      - name: Commit updated star data
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add website/data/github_stars.json
-          if ! git diff --cached --quiet; then
-            git commit -m "chore: update GitHub stars data"
-            git push
-          fi

.gitignore

@@ -7,6 +7,7 @@
 
 # website
 website/output/
+website/data/github_stars.json
 
 # claude code
 .claude/skills/