fix: implement automated version management to prevent version mismatches

Fixes #27

## Problem
Version 2.5.5 was displaying as 2.5.0 in the updater because package.json
wasn't updated when the git tag was created.

## Solution
This PR implements a comprehensive automated version management system:

### 1. Version Bump Script (scripts/bump-version.js)
- Automates version updates in package.json
- Creates git commits and tags automatically
- Prevents human error in version management
- Supports semver bumps (major/minor/patch) or specific versions

### 2. Version Validation Workflow (.github/workflows/validate-version.yml)
- Runs automatically on every git tag push
- Validates package.json version matches the git tag
- Fails CI if versions mismatch with clear error messages
- Prevents releases with incorrect versions

### 3. Documentation (RELEASE.md)
- Complete release process guide
- Troubleshooting for version issues
- Release checklist

### 4. Updated package.json
- Fixed current version from 2.5.0 to 2.5.5

## Impact
- ✅ Prevents version mismatch issues from happening again
- ✅ Automates release process
- ✅ CI validation catches manual errors
- ✅ Clear documentation for maintainers

.github/workflows/validate-version.yml

@@ -0,0 +1,71 @@
+name: Validate Version
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  validate-version:
+    name: Validate package.json version matches tag
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Extract version from tag
+        id: tag_version
+        run: |
+          # Extract version from tag (e.g., v2.5.5 -> 2.5.5)
+          TAG_VERSION=${GITHUB_REF#refs/tags/v}
+          echo "version=$TAG_VERSION" >> $GITHUB_OUTPUT
+          echo "Tag version: $TAG_VERSION"
+
+      - name: Extract version from package.json
+        id: package_version
+        run: |
+          # Read version from package.json
+          PACKAGE_VERSION=$(node -p "require('./auto-claude-ui/package.json').version")
+          echo "version=$PACKAGE_VERSION" >> $GITHUB_OUTPUT
+          echo "Package.json version: $PACKAGE_VERSION"
+
+      - name: Compare versions
+        run: |
+          TAG_VERSION="${{ steps.tag_version.outputs.version }}"
+          PACKAGE_VERSION="${{ steps.package_version.outputs.version }}"
+
+          echo "=========================================="
+          echo "Version Validation"
+          echo "=========================================="
+          echo "Git tag version:      v$TAG_VERSION"
+          echo "package.json version: $PACKAGE_VERSION"
+          echo "=========================================="
+
+          if [ "$TAG_VERSION" != "$PACKAGE_VERSION" ]; then
+            echo ""
+            echo "❌ ERROR: Version mismatch detected!"
+            echo ""
+            echo "The version in package.json ($PACKAGE_VERSION) does not match"
+            echo "the git tag version ($TAG_VERSION)."
+            echo ""
+            echo "To fix this:"
+            echo "  1. Delete this tag: git tag -d v$TAG_VERSION"
+            echo "  2. Update package.json version to $TAG_VERSION"
+            echo "  3. Commit the change"
+            echo "  4. Recreate the tag: git tag -a v$TAG_VERSION -m 'Release v$TAG_VERSION'"
+            echo ""
+            echo "Or use the automated script:"
+            echo "  node scripts/bump-version.js $TAG_VERSION"
+            echo ""
+            exit 1
+          fi
+
+          echo ""
+          echo "✅ SUCCESS: Versions match!"
+          echo ""
+
+      - name: Version validation result
+        if: success()
+        run: |
+          echo "::notice::Version validation passed - package.json version matches tag v${{ steps.tag_version.outputs.version }}"