Update publish workflow to conditionally bump version and improve build process (#5)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

Author: tobenot

.github/workflows/publish-contract.yml

@@ -3,9 +3,9 @@ name: Publish API Contract to GitHub Packages
 
 on:
   push:
-    branches:
-      - main
-    paths-ignore:
+    paths:
+      - 'src/**/*.ts'
+      - 'dist/**/*.d.ts'
       - 'package.json'
 
 jobs:
@@ -25,15 +25,29 @@ jobs:
           registry-url: 'https://npm.pkg.github.com'
           scope: '@tobenot'
 
-      - name: Install dependencies and build
+      - name: Install dependencies
+        run: npm ci
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Bump version if needed
         run: |
-          rm -rf package-lock.json node_modules
-          npm install
-          npm run build
+          latest=$(npm view @tobenot/basic-web-game-backend-contract version --registry=https://npm.pkg.github.com || echo "0.0.0")
+          current=$(node -p "require('./package.json').version")
+          if [ "$current" = "$latest" ]; then
+            next=$(npx semver $latest -i patch)
+            jq ".version = \"$next\"" package.json > package.json.tmp && mv package.json.tmp package.json
+            echo "Bumped version to $next"
+          else
+            echo "No need to bump version"
+          fi
+
+      - name: Build
+        run: npm run build
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Publish package
-        run: npm publish
+        run: npm publish --registry=https://npm.pkg.github.com
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}