Fix CI to include commit changelog in release notes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: cryptobench

.github/workflows/build.yml

@@ -45,10 +45,23 @@ jobs:
         with:
           name: EasyWebMap
 
+      - name: Checkout for commit info
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
       - name: Generate version
         id: version
         run: echo "version=v1.0.${{ github.run_number }}" >> $GITHUB_OUTPUT
 
+      - name: Get changelog from commit
+        id: changelog
+        run: |
+          echo "message<<EOF" >> $GITHUB_OUTPUT
+          git log -1 --pretty=format:"%B" >> $GITHUB_OUTPUT
+          echo "" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
       - name: Rename JAR
         run: mv EasyWebMap-*.jar EasyWebMap-${{ steps.version.outputs.version }}.jar
 
@@ -65,6 +78,12 @@ jobs:
 
             ---
 
+            ### Changelog
+
+            ${{ steps.changelog.outputs.message }}
+
+            ---
+
             ### How to Install
 
             1. Download `EasyWebMap-${{ steps.version.outputs.version }}.jar` below