refactor: improve KanbanCard styling and enhance path normalization in worktree routes

- Updated the button variant in KanbanCard for better visual consistency.
- Adjusted CSS classes for improved styling of shortcut keys.
- Introduced a normalizePath function to ensure consistent path formatting across platforms.
- Updated worktree routes to utilize normalizePath for path handling, enhancing cross-platform compatibility.

apps/server/src/routes/worktree/common.ts

@@ -13,6 +13,15 @@ import {
 const logger = createLogger("Worktree");
 const execAsync = promisify(exec);
 
+/**
+ * Normalize path separators to forward slashes for cross-platform consistency.
+ * This ensures paths from `path.join()` (backslashes on Windows) match paths
+ * from git commands (which may use forward slashes).
+ */
+export function normalizePath(p: string): string {
+  return p.replace(/\\/g, "/");
+}
+
 /**
  * Check if a path is a git repo
  */