feat: implement sidecar binary support and enhance Claude execution system

- **Enhanced Claude Binary Management**: Added support for sidecar binary execution alongside system binaries
- **Improved Command Creation**: Refactored command creation logic with separate functions for sidecar and system binaries
- **Enhanced Process Management**: Better process lifecycle management with improved error handling
- **Updated Tauri Configuration**: Added shell plugin configuration and expanded security policies
- **Agent Commands**: Enhanced agent management with improved error handling and validation

- **Redesigned Claude Version Selector**: Complete UI overhaul with modern select component and better UX
- **Enhanced Settings Integration**: Improved settings page integration with new selector component
- **API Layer Updates**: Updated API calls to support new binary execution modes
- **UI Component Improvements**: Better visual feedback and loading states

- **Updated Capabilities**: Enhanced Tauri capabilities for better security and functionality
- **Documentation Updates**: Updated scripts README with new build instructions
- **Security Enhancements**: Improved CSP policies and asset protocol configuration

- Added  function to determine execution mode
- Implemented  for sidecar binary execution
- Implemented  for system binary execution
- Enhanced process management with better error handling

- Replaced radio group with modern select component
- Added visual indicators for different installation types
- Improved loading states and error feedback
- Better responsive design and accessibility

- Enhanced CSP policies for better security
- Improved asset protocol configuration
- Better error handling and validation throughout
- Optimized process management and resource usage

- 10 files modified with 647 additions and 208 deletions
- Major changes in Claude execution system and UI components
- Configuration updates for enhanced security and functionality

- All existing functionality preserved
- New sidecar binary support tested
- UI components thoroughly tested for accessibility and responsiveness

src-tauri/capabilities/default.json

@@ -11,6 +11,26 @@
     "shell:allow-execute",
     "shell:allow-spawn",
     "shell:allow-open",
+    {
+      "identifier": "shell:allow-execute",
+      "allow": [
+        {
+          "name": "claude-code",
+          "sidecar": true,
+          "args": true
+        }
+      ]
+    },
+    {
+      "identifier": "shell:allow-spawn",
+      "allow": [
+        {
+          "name": "claude-code",
+          "sidecar": true,
+          "args": true
+        }
+      ]
+    },
     "fs:default",
     "fs:allow-mkdir",
     "fs:allow-read",