Update version number to 2.0.0 throughout codebase

- Update version in server.js
- Update version in installer scripts
- Update version in utility modules
- Update version in file creator module
- Ensure consistent 2.0.0 version across codebase

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

modules/file-creator-module.sh

@@ -9,7 +9,7 @@ function create_config_files() {
   cat > $INSTALL_DIR/package.json << EOF
 {
   "name": "transmission-rss-manager",
-  "version": "1.2.0",
+  "version": "2.0.0",
   "description": "Enhanced Transmission RSS Manager with post-processing capabilities",
   "main": "server.js",
   "scripts": {
@@ -1699,4 +1699,9 @@ class PostProcessor {
   }
 }
 
-module.exports = PostProcessor;
+module.exports = PostProcessor;
+EOF
+    }
+  
+  echo "Configuration files created."
+}

modules/utils-module.sh

@@ -65,7 +65,7 @@ function update_config_file() {
     # Update the config version if needed
     local current_version=$(grep -o '"version": "[^"]*"' "$config_file" | cut -d'"' -f4)
     if [ -n "$current_version" ]; then
-      local new_version="1.2.0"
+      local new_version="2.0.0"
       if [ "$current_version" != "$new_version" ]; then
         log "INFO" "Updating config version from $current_version to $new_version"
         sed -i "s/\"version\": \"$current_version\"/\"version\": \"$new_version\"/" "$config_file"