Improve release workflow to show commit history

The release workflow now fetches the full git history and displays all commit messages since the last tag in the release notes, instead of only the latest commit. Also bumps the project version to 1.3.8 in pyproject.toml.

.github/workflows/release.yml

@@ -12,6 +12,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Pobierz pełną historię Git (potrzebne do git log)
 
       - name: Extract base version from pyproject.toml
         id: version
@@ -33,12 +35,32 @@ jobs:
         run: |
           echo "final_tag=v${{ steps.version.outputs.base_version }}" >> $GITHUB_OUTPUT
 
-      - name: Get latest commit message
-        id: last_commit
+      # ZMIANA: Zamiast tylko ostatniego commita, pobierz historię commitów od ostatniego tagu
+      - name: Get commit history since last tag
+        id: commit_history
         run: |
-          msg=$(git log -1 --pretty=%B)
-          msg=${msg//$'\n'/\\n}
-          echo "commit_msg=$msg" >> $GITHUB_OUTPUT
+          # Znajdź ostatni tag (jeśli istnieje)
+          LAST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+          
+          # Jeśli nie ma ostatniego tagu, użyj pustego (pobierz od początku repo)
+          if [ -z "$LAST_TAG" ]; then
+            RANGE="HEAD"
+          else
+            RANGE="$LAST_TAG..HEAD"
+          fi
+          
+          # Pobierz listę commitów (tylko subject/tytuł, format: - Commit message)
+          HISTORY=$(git log --pretty=format:"- %s" $RANGE)
+          
+          # Zastąp nowe linie na \\n, aby dobrze wyglądało w output
+          HISTORY=${HISTORY//$'\n'/\\n}
+          
+          # Jeśli brak commitów, ustaw domyślną wiadomość
+          if [ -z "$HISTORY" ]; then
+            HISTORY="No changes since last release."
+          fi
+          
+          echo "commit_history=$HISTORY" >> $GITHUB_OUTPUT
 
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v1
@@ -48,9 +70,9 @@ jobs:
           body: |
             📦 Release based on pyproject.toml version `${{ steps.version.outputs.base_version }}`
             
-            📝 Last commit message:
+            📝 Changes since last release:
             ```
-            ${{ steps.last_commit.outputs.commit_msg }}
+            ${{ steps.commit_history.outputs.commit_history }}
             ```
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}