feat: optimize accept all button display in AI chat

- Add acceptAllClicked state to AIChatManager to track when accept all was clicked
- Update canApplyCode logic to hide buttons after accept all is clicked
- Simplify CodeDisplay button visibility to remove code comparison logic
- Add editor change listener to reset state when user manually edits code
- Show buttons again when editor content changes as requested

Addresses issue #5999

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

Co-authored-by: Ruben Fiszel <rubenfiszel@users.noreply.github.com>

frontend/src/lib/components/copilot/chat/AIChatManager.svelte.ts

@@ -80,6 +80,7 @@ class AIChatManager {
 	flowAiChatHelpers = $state<FlowAIChatHelpers | undefined>(undefined)
 	pendingNewCode = $state<string | undefined>(undefined)
 	apiTools = $state<Tool<any>[]>([])
+	acceptAllClicked = $state<boolean>(false)
 
 	allowedModes: Record<AIMode, boolean> = $derived({
 		script: this.scriptEditorOptions !== undefined,
@@ -149,7 +150,7 @@ class AIChatManager {
 		}
 	}
 
-	canApplyCode = $derived(this.allowedModes.script && this.mode === AIMode.SCRIPT)
+	canApplyCode = $derived(this.allowedModes.script && this.mode === AIMode.SCRIPT && !this.acceptAllClicked)
 
 	private changeModeTool = {
 		def: {
@@ -664,6 +665,14 @@ class AIChatManager {
 			this.flowAiChatHelpers = undefined
 		}
 	}
+
+	markAcceptAllClicked = () => {
+		this.acceptAllClicked = true
+	}
+
+	resetAcceptAllClicked = () => {
+		this.acceptAllClicked = false
+	}
 }
 
 export const aiChatManager = new AIChatManager()

frontend/src/lib/components/copilot/chat/monaco-adapter.ts

@@ -26,6 +26,13 @@ export class AIChatEditorHandler {
 
 	constructor(editor: meditor.IStandaloneCodeEditor) {
 		this.editor = editor
+		
+		// Reset acceptAllClicked when user manually edits the code
+		this.editor.onDidChangeModelContent(() => {
+			if (aiChatManager.acceptAllClicked) {
+				aiChatManager.resetAcceptAllClicked()
+			}
+		})
 	}
 
 	clear() {
@@ -79,6 +86,7 @@ export class AIChatEditorHandler {
 		for (const group of this.groupChanges) {
 			this.applyGroup(group)
 		}
+		aiChatManager.markAcceptAllClicked()
 		this.finish()
 	}
 

frontend/src/lib/components/copilot/chat/script/CodeDisplay.svelte

@@ -180,7 +180,7 @@
 </script>
 
 <div class="flex flex-col gap-0.5 rounded-lg relative not-prose">
-	{#if aiChatManager.canApplyCode && code !== aiChatManager.scriptEditorOptions?.code}
+	{#if aiChatManager.canApplyCode}
 		<div class="flex justify-end items-end">
 			<Button
 				color="dark"