From 774ee0e20097e8febbef0d4f735e30dd922cc239 Mon Sep 17 00:00:00 2001
From: Pascal <admin@serveurperso.com>
Date: Mon, 31 Aug 2026 17:48:43 +0200
Subject: [PATCH] ui: copy the displayed text of grouped agentic responses
 (#27832)

* ui: copy the displayed text of grouped agentic responses

Agentic sessions render as a single entry anchored on the first
assistant turn, whose content is typically just the first tool call,
so the copy button wrote an empty string to the clipboard. Derive the
text sections of the whole session and copy them joined, matching the
visible response. Plain messages keep the previous behavior.

* const
---
 .../ChatMessage/ChatMessage.svelte            | 25 ++++++++++++++++++-
 .../app/chat/ChatMessages/ChatMessages.svelte |  4 +--
 .../ui/src/lib/constants/agentic.constants.ts |  4 +++
 tools/ui/src/lib/types/chat.d.ts              |  2 +-
 4 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessage/ChatMessage.svelte b/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessage/ChatMessage.svelte
index 0c9ead61e..fa2a50bc5 100644
--- a/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessage/ChatMessage.svelte
+++ b/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessage/ChatMessage.svelte
@@ -7,7 +7,12 @@
 		ChatMessageSystem,
 		ChatMessageUser
 	} from '$lib/components/app/chat';
-	import { REASONING_TAGS, ROUTES, SYSTEM_MESSAGE_PLACEHOLDER } from '$lib/constants';
+	import {
+		AGENTIC_TEXT_COPY_SEPARATOR,
+		REASONING_TAGS,
+		ROUTES,
+		SYSTEM_MESSAGE_PLACEHOLDER
+	} from '$lib/constants';
 	import { setChatMessageActionsContext, setChatMessageEditContext } from '$lib/contexts';
 	import { AgenticSectionType, AttachmentType, MessageRole } from '$lib/enums';
 	import { DatabaseService } from '$lib/services/database.service';
@@ -237,6 +242,24 @@
 	}
 
 	function handleCopy() {
+		// Agentic sessions render as a single entry anchored on the first assistant
+		// turn, whose own content is typically just the first tool call. Copy the
+		// text sections of the whole session so the clipboard matches the visible
+		// response instead of the anchor turn.
+		if (message.role === MessageRole.ASSISTANT) {
+			const sections = deriveAgenticSections(message, toolMessages, [], false);
+			const text = sections
+				.filter((section) => section.type === AgenticSectionType.TEXT)
+				.map((section) => section.content)
+				.join(AGENTIC_TEXT_COPY_SEPARATOR);
+
+			if (text) {
+				chatActions.copy(message, text);
+
+				return;
+			}
+		}
+
 		chatActions.copy(message);
 	}
 
diff --git a/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessages.svelte b/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessages.svelte
index 45b863d66..4750a9f7c 100644
--- a/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessages.svelte
+++ b/tools/ui/src/lib/components/app/chat/ChatMessages/ChatMessages.svelte
@@ -29,10 +29,10 @@
 			refreshAllMessages();
 		},
 
-		copy: async (message: DatabaseMessage) => {
+		copy: async (message: DatabaseMessage, contentOverride?: string) => {
 			const asPlainText = Boolean(currentConfig.copyTextAttachmentsAsPlainText);
 			const clipboardContent = formatMessageForClipboard(
-				message.content,
+				contentOverride ?? message.content,
 				message.extra,
 				asPlainText
 			);
diff --git a/tools/ui/src/lib/constants/agentic.constants.ts b/tools/ui/src/lib/constants/agentic.constants.ts
index e57104e8a..33fb30f1b 100644
--- a/tools/ui/src/lib/constants/agentic.constants.ts
+++ b/tools/ui/src/lib/constants/agentic.constants.ts
@@ -20,6 +20,10 @@ export const SEARCH_SUMMARY = {
 // wraps mid-paragraph.
 export const RESULT_STAT_SEPARATOR = ' - ';
 
+// Separator between the assistant text sections of a grouped agentic
+// session when they are joined for the clipboard.
+export const AGENTIC_TEXT_COPY_SEPARATOR = '\n\n';
+
 export const DEFAULT_AGENTIC_CONFIG: AgenticConfig = {
 	enabled: true,
 	maxTurns: 100
diff --git a/tools/ui/src/lib/types/chat.d.ts b/tools/ui/src/lib/types/chat.d.ts
index 274131dd4..86a868c33 100644
--- a/tools/ui/src/lib/types/chat.d.ts
+++ b/tools/ui/src/lib/types/chat.d.ts
@@ -249,7 +249,7 @@ export interface ChatMessageDeletionInfo {
  * refresh + user-action notification), passed to each ChatMessage as a prop.
  */
 export interface ChatMessageActions {
-	copy: (message: DatabaseMessage) => void;
+	copy: (message: DatabaseMessage, contentOverride?: string) => void;
 	delete: (message: DatabaseMessage) => void;
 	navigateToSibling: (siblingId: string) => void;
 	editWithBranching: (