feature: Migrate ConfirmDialog and BluetoothDevicePicker to shadcn dialogs

- Migrated ConfirmDialog to use shadcn AlertDialog component
  - Replaced custom modal structure with AlertDialogContent, AlertDialogHeader, AlertDialogFooter
  - Used AlertDialogAction and AlertDialogCancel for buttons
  - Maintained danger/warning variant support with border-top styling
  - Simplified code by removing manual escape key handling (built into AlertDialog)

- Migrated BluetoothDevicePicker to use shadcn Dialog component
  - Replaced custom modal structure with DialogContent, DialogHeader, DialogFooter
  - Used shadcn Button components with outline variant for device selection
  - Maintained scanning state UI with loading spinner in DialogDescription
  - Simplified code by removing manual escape key handling (built into Dialog)
  - Disabled close button for better UX during device selection

Both migrations maintain the same external API and functionality while significantly reducing code complexity.

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/BluetoothDevicePicker.tsx

@@ -1,5 +1,14 @@
 import { useEffect, useState, useCallback } from "react";
 import type { BluetoothDevice } from "../types/electron";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Button } from "@/components/ui/button";
 
 export function BluetoothDevicePicker() {
   const [devices, setDevices] = useState<BluetoothDevice[]>([]);
@@ -40,48 +49,17 @@ export function BluetoothDevicePicker() {
     setIsScanning(false);
   }, []);
 
-  // Handle escape key
-  const handleEscape = useCallback(
-    (e: KeyboardEvent) => {
-      if (e.key === "Escape") {
-        handleCancel();
-      }
-    },
-    [handleCancel],
-  );
-
-  useEffect(() => {
-    if (isOpen) {
-      document.addEventListener("keydown", handleEscape);
-      return () => document.removeEventListener("keydown", handleEscape);
-    }
-  }, [isOpen, handleEscape]);
-
-  if (!isOpen) return null;
-
   return (
-    <div
-      className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]"
-      onClick={handleCancel}
+    <Dialog open={isOpen} onOpenChange={(open) => !open && handleCancel()}>
+      <DialogContent
+        className="border-t-4 border-primary-600 dark:border-primary-500"
+        showCloseButton={false}
       >
-      <div
-        className="bg-white dark:bg-gray-800 rounded-lg shadow-2xl max-w-lg w-[90%] m-4 border-t-4 border-primary-600 dark:border-primary-500"
-        onClick={(e) => e.stopPropagation()}
-        role="dialog"
-        aria-labelledby="bluetooth-picker-title"
-        aria-describedby="bluetooth-picker-message"
-      >
-        <div className="p-6 border-b border-gray-300 dark:border-gray-600">
-          <h3
-            id="bluetooth-picker-title"
-            className="m-0 text-base lg:text-lg font-semibold dark:text-white"
-          >
-            Select Bluetooth Device
-          </h3>
-        </div>
-        <div className="p-6">
+        <DialogHeader>
+          <DialogTitle>Select Bluetooth Device</DialogTitle>
+          <DialogDescription>
             {isScanning && devices.length === 0 ? (
-            <div className="flex items-center gap-3 text-gray-700 dark:text-gray-300">
+              <div className="flex items-center gap-3 py-2">
                 <svg
                   className="animate-spin h-5 w-5 text-primary-600 dark:text-primary-400"
                   xmlns="http://www.w3.org/2000/svg"
@@ -95,56 +73,47 @@ export function BluetoothDevicePicker() {
                     r="10"
                     stroke="currentColor"
                     strokeWidth="4"
-                ></circle>
+                  />
                   <path
                     className="opacity-75"
                     fill="currentColor"
                     d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
-                ></path>
+                  />
                 </svg>
-              <span id="bluetooth-picker-message">
-                Scanning for Bluetooth devices...
-              </span>
+                <span>Scanning for Bluetooth devices...</span>
               </div>
             ) : (
-            <>
-              <p
-                id="bluetooth-picker-message"
-                className="mb-4 leading-relaxed text-gray-900 dark:text-gray-100"
-              >
-                {devices.length} device{devices.length !== 1 ? "s" : ""} found.
-                Select a device to connect:
-              </p>
+              `${devices.length} device${devices.length !== 1 ? "s" : ""} found. Select a device to connect:`
+            )}
+          </DialogDescription>
+        </DialogHeader>
+
+        {!isScanning && devices.length > 0 && (
           <div className="space-y-2">
             {devices.map((device) => (
-                  <button
+              <Button
                 key={device.deviceId}
                 onClick={() => handleSelectDevice(device.deviceId)}
-                    className="w-full px-4 py-3 bg-gray-100 dark:bg-gray-700 text-left rounded-lg font-medium text-sm hover:bg-primary-100 dark:hover:bg-primary-900 hover:text-primary-900 dark:hover:text-primary-100 active:bg-primary-200 dark:active:bg-primary-800 transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-primary-300 dark:focus:ring-primary-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
-                    aria-label={`Connect to ${device.deviceName}`}
+                variant="outline"
+                className="w-full h-auto px-4 py-3 justify-start"
               >
-                    <div className="font-semibold text-gray-900 dark:text-white">
-                      {device.deviceName}
-                    </div>
-                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                <div className="text-left">
+                  <div className="font-semibold">{device.deviceName}</div>
+                  <div className="text-xs text-muted-foreground mt-1">
                     {device.deviceId}
                   </div>
-                  </button>
+                </div>
+              </Button>
             ))}
           </div>
-            </>
         )}
-        </div>
-        <div className="p-4 px-6 flex gap-3 justify-end border-t border-gray-300 dark:border-gray-600">
-          <button
-            onClick={handleCancel}
-            className="px-6 py-2.5 bg-gray-600 dark:bg-gray-700 text-white rounded-lg font-semibold text-sm hover:bg-gray-700 dark:hover:bg-gray-600 active:bg-gray-800 dark:active:bg-gray-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-gray-300 dark:focus:ring-gray-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
-            aria-label="Cancel device selection"
-          >
+
+        <DialogFooter>
+          <Button variant="outline" onClick={handleCancel}>
             Cancel
-          </button>
-        </div>
-      </div>
-    </div>
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
   );
 }

src/components/ConfirmDialog.tsx

@@ -1,4 +1,14 @@
-import { useEffect, useCallback } from "react";
+import {
+  AlertDialog,
+  AlertDialogAction,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogTitle,
+} from "@/components/ui/alert-dialog";
+import { cn } from "@/lib/utils";
 
 interface ConfirmDialogProps {
   isOpen: boolean;
@@ -21,75 +31,32 @@ export function ConfirmDialog({
   onCancel,
   variant = "warning",
 }: ConfirmDialogProps) {
-  // Handle escape key
-  const handleEscape = useCallback(
-    (e: KeyboardEvent) => {
-      if (e.key === "Escape") {
-        onCancel();
-      }
-    },
-    [onCancel],
-  );
-
-  useEffect(() => {
-    if (isOpen) {
-      document.addEventListener("keydown", handleEscape);
-      return () => document.removeEventListener("keydown", handleEscape);
-    }
-  }, [isOpen, handleEscape]);
-
-  if (!isOpen) return null;
-
   return (
-    <div
-      className="fixed inset-0 bg-black/50 dark:bg-black/70 flex items-center justify-center z-[1000]"
-      onClick={onCancel}
-    >
-      <div
-        className={`bg-white dark:bg-gray-800 rounded-lg shadow-2xl max-w-lg w-[90%] m-4 ${variant === "danger" ? "border-t-4 border-danger-600 dark:border-danger-500" : "border-t-4 border-warning-500 dark:border-warning-600"}`}
-        onClick={(e) => e.stopPropagation()}
-        role="dialog"
-        aria-labelledby="dialog-title"
-        aria-describedby="dialog-message"
-      >
-        <div className="p-6 border-b border-gray-300 dark:border-gray-600">
-          <h3
-            id="dialog-title"
-            className="m-0 text-base lg:text-lg font-semibold dark:text-white"
-          >
-            {title}
-          </h3>
-        </div>
-        <div className="p-6">
-          <p
-            id="dialog-message"
-            className="m-0 leading-relaxed text-gray-900 dark:text-gray-100"
-          >
-            {message}
-          </p>
-        </div>
-        <div className="p-4 px-6 flex gap-3 justify-end border-t border-gray-300 dark:border-gray-600">
-          <button
-            onClick={onCancel}
-            className="px-6 py-2.5 bg-gray-600 dark:bg-gray-700 text-white rounded-lg font-semibold text-sm hover:bg-gray-700 dark:hover:bg-gray-600 active:bg-gray-800 dark:active:bg-gray-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-gray-300 dark:focus:ring-gray-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
-            autoFocus
-            aria-label="Cancel action"
-          >
-            {cancelText}
-          </button>
-          <button
-            onClick={onConfirm}
-            className={
+    <AlertDialog open={isOpen} onOpenChange={(open) => !open && onCancel()}>
+      <AlertDialogContent
+        className={cn(
           variant === "danger"
-                ? "px-6 py-2.5 bg-danger-600 dark:bg-danger-700 text-white rounded-lg font-semibold text-sm hover:bg-danger-700 dark:hover:bg-danger-600 active:bg-danger-800 dark:active:bg-danger-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-danger-300 dark:focus:ring-danger-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
-                : "px-6 py-2.5 bg-primary-600 dark:bg-primary-700 text-white rounded-lg font-semibold text-sm hover:bg-primary-700 dark:hover:bg-primary-600 active:bg-primary-800 dark:active:bg-primary-500 hover:shadow-lg active:scale-[0.98] transition-all duration-150 cursor-pointer focus:outline-none focus:ring-2 focus:ring-primary-300 dark:focus:ring-primary-500 focus:ring-offset-2 dark:focus:ring-offset-gray-900"
-            }
-            aria-label={`Confirm: ${confirmText}`}
+            ? "border-t-4 border-danger-600 dark:border-danger-500"
+            : "border-t-4 border-warning-500 dark:border-warning-600",
+        )}
+      >
+        <AlertDialogHeader>
+          <AlertDialogTitle>{title}</AlertDialogTitle>
+          <AlertDialogDescription>{message}</AlertDialogDescription>
+        </AlertDialogHeader>
+        <AlertDialogFooter>
+          <AlertDialogCancel onClick={onCancel}>{cancelText}</AlertDialogCancel>
+          <AlertDialogAction
+            onClick={onConfirm}
+            className={cn(
+              variant === "danger" &&
+                "bg-danger-600 hover:bg-danger-700 dark:bg-danger-700 dark:hover:bg-danger-600",
+            )}
           >
             {confirmText}
-          </button>
-        </div>
-      </div>
-    </div>
+          </AlertDialogAction>
+        </AlertDialogFooter>
+      </AlertDialogContent>
+    </AlertDialog>
   );
 }