feat: add UI build to build process

- Created separate build script to handle both CLI and UI building
- Added automatic UI dependency installation
- Copy built UI artifacts to dist directory

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

ui/src/locales/en.json

@@ -0,0 +1,91 @@
+{
+  "app": {
+    "title": "Configuration",
+    "save": "Save",
+    "save_and_restart": "Save and Restart",
+    "cancel": "Cancel",
+    "edit": "Edit",
+    "remove": "Remove",
+    "delete": "Delete",
+    "settings": "Settings",
+    "selectFile": "Select File",
+    "config_saved_success": "Config saved successfully",
+    "config_saved_failed": "Failed to save config",
+    "config_saved_restart_success": "Config saved and service restarted successfully",
+    "config_saved_restart_failed": "Failed to save config and restart service"
+  },
+  "login": {
+    "title": "Sign in to your account",
+    "description": "Enter your API key to access the configuration panel",
+    "apiKey": "API Key",
+    "apiKeyPlaceholder": "Enter your API key",
+    "signIn": "Sign In",
+    "invalidApiKey": "Invalid API key",
+    "configError": "Configuration not loaded",
+    "validating": "Validating API key..."
+  },
+  "toplevel": {
+    "title": "General Settings",
+    "log": "Enable Logging",
+    "claude_path": "Claude Path",
+    "host": "Host",
+    "port": "Port",
+    "apikey": "API Key"
+  },
+  "transformers": {
+    "title": "Custom Transformers",
+    "path": "Path",
+    "project": "Project",
+    "remove": "Remove",
+    "add": "Add Custom Transformer",
+    "edit": "Edit Custom Transformer",
+    "delete": "Delete Custom Transformer",
+    "delete_transformer_confirm": "Are you sure you want to delete this custom transformer?",
+    "parameters": "Parameters"
+  },
+  "providers": {
+    "title": "Providers",
+    "name": "Name",
+    "api_base_url": "API Base URL",
+    "api_key": "API Key",
+    "models": "Models",
+    "models_placeholder": "Enter model name and press Enter to add",
+    "add_model": "Add Model",
+    "select_models": "Select Models",
+    "remove": "Remove",
+    "add": "Add Provider",
+    "edit": "Edit Provider",
+    "delete": "Delete",
+    "cancel": "Cancel",
+    "delete_provider_confirm": "Are you sure you want to delete this provider?",
+    "test_connectivity": "Test Connectivity",
+    "testing": "Testing...",
+    "connection_successful": "Connection successful!",
+    "connection_failed": "Connection failed!",
+    "missing_credentials": "Missing API base URL or API key",
+    "fetch_available_models": "Fetch available models",
+    "fetching_models": "Fetching models...",
+    "fetch_models_failed": "Failed to fetch models",
+    "transformers": "Transformers",
+    "select_transformer": "Select Transformer",
+    "no_transformers": "No transformers available",
+    "provider_transformer": "Provider Transformer",
+    "model_transformers": "Model Transformers",
+    "transformer_parameters": "Transformer Parameters",
+    "add_parameter": "Add Parameter",
+    "parameter_name": "Parameter Name",
+    "parameter_value": "Parameter Value",
+    "selected_transformers": "Selected Transformers"
+  },
+  "router": {
+    "title": "Router",
+    "default": "Default",
+    "background": "Background",
+    "think": "Think",
+    "longContext": "Long Context",
+    "webSearch": "Web Search",
+    "selectModel": "Select a model...",
+    "searchModel": "Search model...",
+    "noModelFound": "No model found."
+  }
+}