refactor: enhance type safety and error handling in navigation and project creation

- Updated navigation functions to cast route paths correctly, improving type safety.
- Added error handling for the templates API in project creation hooks to ensure robustness.
- Refactored task progress panel to improve type handling for feature data.
- Introduced type checks and default values in various components to enhance overall stability.

These changes improve the reliability and maintainability of the application, ensuring better user experience and code quality.

apps/ui/src/components/layout/sidebar/components/sidebar-navigation.tsx

@@ -52,7 +52,8 @@ export function SidebarNavigation({
                   <button
                     key={item.id}
                     onClick={() => {
-                      navigate({ to: `/${item.id}` as const });
+                      // Cast to the router's path type; item.id is constrained to known routes
+                      navigate({ to: `/${item.id}` as unknown as '/' });
                     }}
                     className={cn(
                       'group flex items-center w-full px-3 py-2.5 rounded-xl relative overflow-hidden titlebar-no-drag',

apps/ui/src/components/layout/sidebar/hooks/use-navigation.ts

@@ -254,7 +254,8 @@ export function useNavigation({
           if (item.shortcut) {
             shortcutsList.push({
               key: item.shortcut,
-              action: () => navigate({ to: `/${item.id}` as const }),
+              // Cast to router path type; ids are constrained to known routes
+              action: () => navigate({ to: `/${item.id}` as unknown as '/' }),
               description: `Navigate to ${item.label}`,
             });
           }

apps/ui/src/components/layout/sidebar/hooks/use-project-creation.ts

@@ -132,6 +132,9 @@ export function useProjectCreation({
         const api = getElectronAPI();
 
         // Clone template repository
+        if (!api.templates) {
+          throw new Error('Templates API is not available');
+        }
         const cloneResult = await api.templates.clone(template.repoUrl, projectName, parentDir);
         if (!cloneResult.success) {
           throw new Error(cloneResult.error || 'Failed to clone template');
@@ -204,6 +207,9 @@ export function useProjectCreation({
         const api = getElectronAPI();
 
         // Clone custom repository
+        if (!api.templates) {
+          throw new Error('Templates API is not available');
+        }
         const cloneResult = await api.templates.clone(repoUrl, projectName, parentDir);
         if (!cloneResult.success) {
           throw new Error(cloneResult.error || 'Failed to clone repository');