feat(release): remove version tag prefix from release titles

HACS automatically displays the version number before release titles,
causing duplication when version tags are included in the title.

Changes:
- scripts/generate-release-notes: All backends now generate intelligent
  titles without version prefix (git-cliff, manual, and copilot)
- scripts/generate-release-notes: Added smart title generation based on
  commit analysis (feat/fix counts) for git-cliff and manual backends
- scripts/generate-release-notes: Unified section headers to use ### (H3)
  instead of ## (H2) for consistency across all backends
- scripts/generate-release-notes: Auto-update feature now uses extracted
  title without prepending version tag
- .github/workflows/release.yml: Extract title directly from generated
  release notes (first line with "# ") instead of manual construction
- .github/workflows/release.yml: Removed redundant "Generate release title"
  step

Before (HACS): v0.9.0: v0.9.0 - New Features
After (HACS):  v0.9.0: Multi-Home Support & Diagnostic Sensors

Impact: Release titles in HACS are now cleaner with single version display
and more descriptive titles generated intelligently from commit content.
All three backends (copilot, git-cliff, manual) produce consistent output
with H1 title followed by H3 sections.

.github/workflows/release.yml

@@ -195,6 +195,13 @@ jobs:
           # git-cliff will handle filtering via cliff.toml
           USE_AI=false ./scripts/generate-release-notes "${FROM_TAG}" "${TO_TAG}" > release-notes.md
 
+          # Extract title from release notes (first line starting with "# ")
+          TITLE=$(head -n 1 release-notes.md | sed 's/^# //')
+          if [ -z "$TITLE" ]; then
+            TITLE="Release Updates"
+          fi
+          echo "title=$TITLE" >> $GITHUB_OUTPUT
+
           # Append version warning if present
           WARNING="${{ steps.version_check.outputs.warning }}"
           if [ -n "$WARNING" ]; then
@@ -218,34 +225,10 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "${{ steps.version_check.outputs.warning }}" >> $GITHUB_STEP_SUMMARY
 
-      - name: Generate release title
-        id: release_title
-        run: |
-          TAG_VERSION="${GITHUB_REF#refs/tags/}"
-          FROM_TAG="${{ steps.previoustag.outputs.previous_tag }}"
-
-          # Extract main feature types from commits
-          FEAT_COUNT=$(git log ${FROM_TAG}..HEAD --format="%s" --no-merges | grep -cE "^feat(\(.+\))?:" || true)
-          FIX_COUNT=$(git log ${FROM_TAG}..HEAD --format="%s" --no-merges | grep -cE "^fix(\(.+\))?:" || true)
-
-          # Build title based on what changed
-          if [ $FEAT_COUNT -gt 0 ] && [ $FIX_COUNT -gt 0 ]; then
-            TITLE="$TAG_VERSION - New Features & Bug Fixes"
-          elif [ $FEAT_COUNT -gt 0 ]; then
-            TITLE="$TAG_VERSION - New Features"
-          elif [ $FIX_COUNT -gt 0 ]; then
-            TITLE="$TAG_VERSION - Bug Fixes"
-          else
-            TITLE="$TAG_VERSION"
-          fi
-
-          echo "title=$TITLE" >> $GITHUB_OUTPUT
-          echo "Release title: $TITLE"
-
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2
         with:
-          name: ${{ steps.release_title.outputs.title }}
+          name: ${{ steps.release_notes.outputs.title }}
           body: ${{ steps.release_notes.outputs.notes }}
           draft: false
           prerelease: false

scripts/generate-release-notes

@@ -269,6 +269,36 @@ End the output after the last release note item. Nothing more."
 generate_with_gitcliff() {
     log_info "${BLUE}==> Generating with git-cliff${NC}"
 
+    # Analyze commits to generate smart title
+    FROM_TAG_SHORT="${FROM_TAG}"
+    TO_TAG_SHORT="${TO_TAG}"
+    COMMITS_LOG=$(git log --pretty=format:"%s" "${FROM_TAG}..${TO_TAG}" 2>/dev/null || echo "")
+
+    # Count user-facing changes (exclude dev/ci/docs)
+    FEAT_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^feat\((sensors|binary_sensor|config_flow|services|coordinator|api)\):" || true)
+    FIX_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^fix\((sensors|binary_sensor|config_flow|services|coordinator|api|translations)\):" || true)
+    PERF_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^perf\(" || true)
+
+    # Generate intelligent title based on changes
+    if [ $PERF_COUNT -gt 0 ]; then
+        TITLE="# Performance & Reliability Improvements"
+    elif [ $FEAT_COUNT -gt 2 ]; then
+        TITLE="# New Features & Enhancements"
+    elif [ $FEAT_COUNT -gt 0 ] && [ $FIX_COUNT -gt 0 ]; then
+        TITLE="# New Features & Bug Fixes"
+    elif [ $FEAT_COUNT -gt 0 ]; then
+        TITLE="# New Features"
+    elif [ $FIX_COUNT -gt 2 ]; then
+        TITLE="# Bug Fixes & Improvements"
+    elif [ $FIX_COUNT -gt 0 ]; then
+        TITLE="# Bug Fixes"
+    else
+        TITLE="# Release Updates"
+    fi
+
+    echo "$TITLE"
+    echo ""
+
     # Create temporary cliff.toml if not exists
     if [ ! -f "cliff.toml" ]; then
         cat > /tmp/cliff.toml <<'EOF'
@@ -325,6 +355,32 @@ generate_with_manual() {
         exit 0
     fi
 
+    # Analyze commits to generate smart title
+    COMMITS_LOG=$(git log --pretty=format:"%s" "${FROM_TAG}..${TO_TAG}" 2>/dev/null || echo "")
+
+    # Count user-facing changes (exclude dev/ci/docs)
+    FEAT_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^feat\((sensors|binary_sensor|config_flow|services|coordinator|api)\):" || true)
+    FIX_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^fix\((sensors|binary_sensor|config_flow|services|coordinator|api|translations)\):" || true)
+    PERF_COUNT=$(echo "$COMMITS_LOG" | grep -cE "^perf\(" || true)
+
+    # Generate intelligent title based on changes
+    if [ $PERF_COUNT -gt 0 ]; then
+        echo "# Performance & Reliability Improvements"
+    elif [ $FEAT_COUNT -gt 2 ]; then
+        echo "# New Features & Enhancements"
+    elif [ $FEAT_COUNT -gt 0 ] && [ $FIX_COUNT -gt 0 ]; then
+        echo "# New Features & Bug Fixes"
+    elif [ $FEAT_COUNT -gt 0 ]; then
+        echo "# New Features"
+    elif [ $FIX_COUNT -gt 2 ]; then
+        echo "# Bug Fixes & Improvements"
+    elif [ $FIX_COUNT -gt 0 ]; then
+        echo "# Bug Fixes"
+    else
+        echo "# Release Updates"
+    fi
+    echo ""
+
     # Create temporary files for each category
     TMPDIR=$(mktemp -d)
     FEAT_FILE="${TMPDIR}/feat"
@@ -382,42 +438,42 @@ generate_with_manual() {
 
     # Output grouped by category
     if [ -s "$FEAT_FILE" ]; then
-        echo "## 🎉 New Features"
+        echo "### 🎉 New Features"
         echo ""
         cat "$FEAT_FILE"
         echo ""
     fi
 
     if [ -s "$FIX_FILE" ]; then
-        echo "## 🐛 Bug Fixes"
+        echo "### 🐛 Bug Fixes"
         echo ""
         cat "$FIX_FILE"
         echo ""
     fi
 
     if [ -s "$DOCS_FILE" ]; then
-        echo "## 📚 Documentation"
+        echo "### 📚 Documentation"
         echo ""
         cat "$DOCS_FILE"
         echo ""
     fi
 
     if [ -s "$REFACTOR_FILE" ]; then
-        echo "## 🔧 Maintenance & Refactoring"
+        echo "### 🔧 Maintenance & Refactoring"
         echo ""
         cat "$REFACTOR_FILE"
         echo ""
     fi
 
     if [ -s "$TEST_FILE" ]; then
-        echo "## 🧪 Testing"
+        echo "### 🧪 Testing"
         echo ""
         cat "$TEST_FILE"
         echo ""
     fi
 
     if [ -s "$OTHER_FILE" ]; then
-        echo "## 📝 Other Changes"
+        echo "### 📝 Other Changes"
         echo ""
         cat "$OTHER_FILE"
         echo ""
@@ -525,10 +581,10 @@ else
     NOTES_BODY=$(cat "$TEMP_NOTES")
 fi
 
-# Generate final title for GitHub release
+# Generate final title for GitHub release (without version tag - HACS adds it automatically)
 if [ -n "$EXTRACTED_TITLE" ]; then
-    # AI provided a title, prepend version tag
+    # Use the extracted title from release notes (no version prefix)
-    RELEASE_TITLE="$TO_TAG - $EXTRACTED_TITLE"
+    RELEASE_TITLE="$EXTRACTED_TITLE"
 else
     # Fallback: Keep current title if it looks meaningful
     # (more than just the tag itself)
@@ -541,15 +597,15 @@ else
         DOCS_COUNT=$(echo "$NOTES_BODY" | grep -c "^### 📚 Documentation" || true)
 
         if [ "$FEAT_COUNT" -gt 0 ] && [ "$FIX_COUNT" -gt 0 ]; then
-            RELEASE_TITLE="$TO_TAG - New Features & Bug Fixes"
+            RELEASE_TITLE="New Features & Bug Fixes"
         elif [ "$FEAT_COUNT" -gt 0 ]; then
-            RELEASE_TITLE="$TO_TAG - New Features"
+            RELEASE_TITLE="New Features"
         elif [ "$FIX_COUNT" -gt 0 ]; then
-            RELEASE_TITLE="$TO_TAG - Bug Fixes"
+            RELEASE_TITLE="Bug Fixes"
         elif [ "$DOCS_COUNT" -gt 0 ]; then
-            RELEASE_TITLE="$TO_TAG - Documentation Updates"
+            RELEASE_TITLE="Documentation Updates"
         else
-            RELEASE_TITLE="$TO_TAG - Updates"
+            RELEASE_TITLE="Release Updates"
         fi
     fi
 fi