feat: Enhance server connection handling with exponential backoff and improved reconnection logic

.github/workflows/ci-release.yml

@@ -47,8 +47,8 @@ jobs:
         env:
           BEFORE: ${{ github.event.before }}
         run: |
-          if [ "$BEFORE" = "0000000000000000000000000000000000000000" ]; then
-            # Initial push — treat everything as changed
+          if [ -z "$BEFORE" ] || [ "$BEFORE" = "0000000000000000000000000000000000000000" ]; then
+            # workflow_dispatch or initial push — treat everything as changed
             echo "src_changed=true" >> "$GITHUB_OUTPUT"
           else
             SRC_CHANGED=$(git diff --name-only "$BEFORE" HEAD -- 'src/' | wc -l)
@@ -92,6 +92,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Setup .NET 10
         uses: actions/setup-dotnet@v4
@@ -161,12 +163,44 @@ jobs:
           zip -r ../EchoHub-Client-osx-x64.zip client-osx-x64/
           zip -r ../EchoHub-Client-osx-arm64.zip client-osx-arm64/
 
+      - name: Build release notes
+        if: steps.check_release.outputs.exists == 'false'
+        id: notes
+        run: |
+          TAG="${{ steps.version.outputs.tag }}"
+          CHANGELOG_URL="https://huebyte.github.io/EchoHub/changelog/${TAG}.html"
+          REPO="https://github.com/${{ github.repository }}"
+          PREV_TAG=$(git tag --sort=-v:refname | grep -v "^${TAG}$" | head -n 1)
+
+          {
+            echo "body<<RELEASE_EOF"
+            echo "📋 **[Full Changelog](${CHANGELOG_URL})**"
+            echo ""
+            echo "---"
+            echo ""
+            echo "### Commits"
+            echo ""
+            if [ -n "$PREV_TAG" ]; then
+              git log "${PREV_TAG}..${TAG}" --pretty=format:"- %s (%h)" --no-merges
+            else
+              git log "${TAG}" --pretty=format:"- %s (%h)" --no-merges
+            fi
+            echo ""
+            echo ""
+            if [ -n "$PREV_TAG" ]; then
+              echo "*Version diff: [${PREV_TAG}...${TAG}](${REPO}/compare/${PREV_TAG}...${TAG})*"
+            else
+              echo "*Version diff: [${TAG}](${REPO}/commits/${TAG})*"
+            fi
+            echo "RELEASE_EOF"
+          } >> "$GITHUB_OUTPUT"
+
       - name: Create GitHub Release
         if: steps.check_release.outputs.exists == 'false'
         run: |
           gh release create "${{ steps.version.outputs.tag }}" \
             --title "EchoHub ${{ steps.version.outputs.tag }}" \
-            --generate-notes \
+            --notes "${{ steps.notes.outputs.body }}" \
             EchoHub-Server-win-x64.zip \
             EchoHub-Server-linux-x64.zip \
             EchoHub-Server-osx-x64.zip \