webui: add "Send message on Enter" setting (#21577)

* webui: make Enter to send chat a setting

* Shorten description

* Use isMobile hook from $lib/hooks

* Rebuild static output

tools/server/webui/src/lib/constants/settings-config.ts

@@ -22,6 +22,7 @@ export const SETTING_CONFIG_DEFAULT: Record<string, string | number | boolean |
 	renderUserContentAsMarkdown: false,
 	alwaysShowSidebarOnDesktop: false,
 	autoShowSidebarOnNewChat: true,
+	sendOnEnter: true,
 	autoMicOnEmpty: false,
 	fullHeightCodeBlocks: false,
 	showRawModelNames: false,
@@ -126,6 +127,8 @@ export const SETTING_CONFIG_INFO: Record<string, string> = {
 		'Always keep the sidebar visible on desktop instead of auto-hiding it.',
 	autoShowSidebarOnNewChat:
 		'Automatically show sidebar when starting a new chat. Disable to keep the sidebar hidden until you click on it.',
+	sendOnEnter:
+		'Use Enter to send messages and Shift + Enter for new lines. When disabled, use Ctrl/Cmd + Enter.',
 	autoMicOnEmpty:
 		'Automatically show microphone button instead of send button when textarea is empty for models with audio modality support.',
 	fullHeightCodeBlocks:

tools/server/webui/src/lib/constants/settings-keys.ts

@@ -11,6 +11,7 @@ export const SETTINGS_KEYS = {
 	SYSTEM_MESSAGE: 'systemMessage',
 	PASTE_LONG_TEXT_TO_FILE_LEN: 'pasteLongTextToFileLen',
 	COPY_TEXT_ATTACHMENTS_AS_PLAIN_TEXT: 'copyTextAttachmentsAsPlainText',
+	SEND_ON_ENTER: 'sendOnEnter',
 	ENABLE_CONTINUE_GENERATION: 'enableContinueGeneration',
 	PDF_AS_IMAGE: 'pdfAsImage',
 	ASK_FOR_TITLE_CONFIRMATION: 'askForTitleConfirmation',