feat: implement release notes generation with categorized changes since last tag

.github/workflows/gitea-release.yml

@@ -66,14 +66,33 @@ jobs:
         VERSION=$(grep '^version = ' platformio.ini | cut -d'"' -f2)
         echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
       
-    - name: Read CHANGELOG.md
-      id: changelog
+    - name: Generate Release Notes
+      id: release_notes
       run: |
-        VERSION=${{ steps.get_version.outputs.VERSION }}
-        CHANGELOG=$(awk "/## \\[$VERSION\\]/{p=1;print;next} /## \\[/{p=0} p" CHANGELOG.md)
-        echo "CHANGES<<EOF" >> $GITHUB_OUTPUT
-        echo "$CHANGELOG" >> $GITHUB_OUTPUT
-        echo "EOF" >> $GITHUB_OUTPUT
+        LAST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+        
+        if [ -n "$LAST_TAG" ]; then
+          echo "CHANGES<<EOF" >> $GITHUB_OUTPUT
+          echo "Changes since $LAST_TAG:" >> $GITHUB_OUTPUT
+          echo "" >> $GITHUB_OUTPUT
+          
+          # Get commits since last tag and categorize them
+          echo "### Added" >> $GITHUB_OUTPUT
+          git log $LAST_TAG..HEAD --pretty=format:%s | grep -iE '^(feat|add|new)' | sed 's/^feat: /- /' >> $GITHUB_OUTPUT || true
+          echo "" >> $GITHUB_OUTPUT
+          
+          echo "### Fixed" >> $GITHUB_OUTPUT
+          git log $LAST_TAG..HEAD --pretty=format:%s | grep -iE '^fix' | sed 's/^fix: /- /' >> $GITHUB_OUTPUT || true
+          echo "" >> $GITHUB_OUTPUT
+          
+          echo "### Changed" >> $GITHUB_OUTPUT
+          git log $LAST_TAG..HEAD --pretty=format:%s | grep -ivE '^(feat|fix|add|new)' | sed 's/^/- /' >> $GITHUB_OUTPUT || true
+          echo "EOF" >> $GITHUB_OUTPUT
+        else
+          echo "CHANGES<<EOF" >> $GITHUB_OUTPUT
+          echo "Initial Release" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+        fi
 
     - name: Determine Gitea URL
       id: gitea_url
@@ -122,7 +141,7 @@ jobs:
         
         # Erstelle zuerst den Release ohne Dateien
         echo "Debug: Creating release..."
-        RELEASE_DATA="{\"tag_name\":\"v${VERSION}\",\"name\":\"v${VERSION}\",\"body\":\"${{ steps.changelog.outputs.CHANGES }}\"}"
+        RELEASE_DATA="{\"tag_name\":\"v${VERSION}\",\"name\":\"v${VERSION}\",\"body\":\"${{ steps.release_notes.outputs.CHANGES }}\"}"
         
         RELEASE_RESPONSE=$(curl -s -w "\n%{http_code}" \
           -X POST \