fix(tui): prevent image ID collisions between modules

- allocateImageId() now returns random IDs instead of sequential
- Static images no longer auto-allocate IDs (transient display)
- Only explicit imageId usage (like DOSBox) gets tracked IDs
- Suppress emulators exit logging in DOSBox dispose

Fixes image replacement bug when extension and main app both
allocated sequential IDs starting at 1.

packages/tui/src/components/image.ts

@@ -1,5 +1,4 @@
 import {
-	deleteKittyImage,
 	getCapabilities,
 	getImageDimensions,
 	type ImageDimensions,
@@ -102,15 +101,4 @@ export class Image implements Component {
 
 		return lines;
 	}
-
-	/**
-	 * Delete the terminal image. Call this when done with the image
-	 * to free terminal resources.
-	 */
-	dispose(): void {
-		if (this.imageId !== undefined) {
-			process.stdout.write(deleteKittyImage(this.imageId));
-			this.imageId = undefined;
-		}
-	}
 }