feat: add ComfyUI integration for image generation

- Implemented ComfyUI API for generating images with various modes (text-to-image, image-to-image, inpaint, outpaint).
- Created GenerateSheet and associated controls for user input on generation settings.
- Added subtle scrollbar styles for improved UI experience.
- Enhanced canvas input handling to ignore key events when focused on editable elements.
- Optimized canvas resizing logic to prevent unnecessary dispatches.
- Introduced error handling for generation failures and loading models.
- Added functionality to upload images and masks for inpainting.

view/canvas/useCanvasResize.ts

@@ -1,21 +1,34 @@
-import { useEffect, type RefObject } from "react";
+import { useEffect, useRef, type RefObject } from "react";
 import type { Dispatch } from "@commands/dispatcher";
 import { commandIds } from "@commands/ids";
 
 export function useCanvasResize(canvasRef: RefObject<HTMLCanvasElement | null>, dispatch: Dispatch) {
+  const lastSize = useRef<{ w: number; h: number }>();
+
   useEffect(() => {
     const canvas = canvasRef.current;
     if (!canvas) return;
 
+    let animationFrame: number | undefined;
+
     const resizeObserver = new ResizeObserver(([entry]) => {
       if (!entry) return;
 
       const width = Math.floor(entry.contentRect.width);
       const height = Math.floor(entry.contentRect.height);
-      dispatch(commandIds.viewportSetSize, { w: width, h: height });
+      if (lastSize.current?.w === width && lastSize.current.h === height) return;
+
+      if (animationFrame !== undefined) cancelAnimationFrame(animationFrame);
+      animationFrame = requestAnimationFrame(() => {
+        lastSize.current = { w: width, h: height };
+        dispatch(commandIds.viewportSetSize, { w: width, h: height });
+      });
     });
 
     resizeObserver.observe(canvas);
-    return () => resizeObserver.disconnect();
+    return () => {
+      if (animationFrame !== undefined) cancelAnimationFrame(animationFrame);
+      resizeObserver.disconnect();
+    };
   }, [canvasRef, dispatch]);
 }