Add Prerelease Notes

closes https://github.com/official-stockfish/Stockfish/pull/6803

No functional change

.github/workflows/stockfish.yml

@@ -28,6 +28,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
+          fetch-depth: 0
 
       # returns null if no pre-release exists
       - name: Get Commit SHA of Latest Pre-release
@@ -70,6 +71,17 @@ jobs:
             echo "OFFICIAL_RELEASE=false" >> $GITHUB_ENV
           fi
 
+      # Get recent commits for release body
+      - name: Get commits in this push
+        id: recent_commits
+        run: |
+          COMMITS=$(git log \
+            --format="- [\`%h\`](https://github.com/${{ github.repository }}/commit/%H) *%s*" \
+            ${{ github.event.before }}..HEAD)
+          echo "COMMITS<<EOF" >> $GITHUB_OUTPUT
+          echo "$COMMITS" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
       # Create a new pre-release, the other upload_binaries.yml will upload the binaries
       # to this pre-release.
       - name: Create Prerelease
@@ -79,6 +91,23 @@ jobs:
           name: Stockfish dev-${{ env.COMMIT_DATE }}-${{ env.COMMIT_SHA }}
           tag_name: stockfish-dev-${{ env.COMMIT_DATE }}-${{ env.COMMIT_SHA }}
           prerelease: true
+          body: |
+            Precompiled binaries of the latest Stockfish development version, built automatically on every commit.
+            
+            > [!NOTE]
+            > For stable, thoroughly tested builds use the [official releases](https://github.com/official/stockfish/releases).
+            > Pre-releases may contain bugs.
+            
+            *Some platforms ship a **universal binary** that automatically selects the best
+            instruction set for your CPU - no manual selection needed.*
+            
+            ---
+            
+            ## Commits
+            
+            ${{ steps.recent_commits.outputs.COMMITS }}
+            
+            [View all commits →](https://github.com/${{ github.repository }}/commits/master)
   Matrix:
     name: Prepare matrices
     runs-on: ubuntu-latest