@@ -13,6 +13,10 @@ export async function parseStreamErrorResponse(response: Response): Promise<stri
 	}
 }
 
+function sanitizeContent(content: string): string {
+	return content.replace(/\r\n|\r|\n/g, ' ').replace(/ {2,}/g, ' ').trim()
+}
+
 export const chatMessagesApi = {
 	getMessages: async (chatUid: string, offset: number, token?: string) => {
 		try {
@@ -40,10 +44,21 @@ export const chatMessagesApi = {
 
 	sendMessage: async <T>(chatUid: string, dataForSend: MessageSend<T> | FormData, token?: string) => {
 		const headerDataType = dataForSend instanceof FormData ? 'multipart/form-data' : 'application/json'
+		const payload =
+			dataForSend instanceof FormData
+				? dataForSend
+				: { ...dataForSend, content: sanitizeContent(dataForSend.content) }
+
+		if (payload instanceof FormData && payload.has('content')) {
+			const raw = payload.get('content')
+			if (typeof raw === 'string') {
+				payload.set('content', sanitizeContent(raw))
+			}
+		}
 
 		return axios.post<IMessageRequest, AxiosResponse<Message[] | { detail: string }>>(
 			getApiUrl() + `/chats/${chatUid}/messages/`,
-			dataForSend,
+			payload,
 			{
 				withCredentials: true,
 				headers: {
@@ -62,6 +77,12 @@ export const chatMessagesApi = {
 		}
 
 		if (dataForSend instanceof FormData) {
+			if (dataForSend.has('content')) {
+				const raw = dataForSend.get('content')
+				if (typeof raw === 'string') {
+					dataForSend.set('content', sanitizeContent(raw))
+				}
+			}
 			return fetch(url, {
 				method: 'POST',
 				headers: streamHeaders,
@@ -71,7 +92,8 @@ export const chatMessagesApi = {
 			})
 		}
 
-		const { content, info } = dataForSend
+		const { info } = dataForSend
+		const content = sanitizeContent(dataForSend.content)
 
 		return fetch(url, {
 			method: 'POST',
@@ -47,12 +47,12 @@ function buildRequiredForVersion(inputs: IModelInputs[], currentVersion: string)
 function composeMessage(text: string, quote: string | null | undefined): string {
 	const parts: string[] = []
 	if (quote != null && quote !== '') {
-		parts.push('```\n' + quote + '\n```')
+		parts.push('```' + quote + '```')
 	}
 	if (text !== '') {
 		parts.push(text)
 	}
-	return parts.join('\n')
+	return parts.join(' ')
 }
 
 interface Input {
@@ -266,6 +266,11 @@ export const ModelInput: FC<Input & TextFieldProps> = ({
 				target.style.height = target.scrollHeight + 'px'
 			}}
 			onKeyDown={async (e) => {
+				if (e.key === 'Backspace' && hasQuote && value === '') {
+					e.preventDefault()
+					onQuoteChange?.(null)
+					return
+				}
 				if (e.shiftKey && e.key === 'Enter') {
 				} else if (e.key === 'Enter') {
 					e.preventDefault()
@@ -344,15 +349,15 @@ export const ModelInput: FC<Input & TextFieldProps> = ({
 						loading={loading}
 						unpinImage={unpinImage}
 						input={composedForSend}
-						sendMessage={(msg, req) => wrappedSendMessage(msg, req)}
-						setInput={externalOnChange ? 
+						sendMessage={() => submitMessage()}
+						setInput={externalOnChange ?
 							(val: string | ((prev: string) => string)) => {
 								const newVal = typeof val === 'function' ? val(value) : val
 								externalOnChange(newVal)
 								if (newVal === '') {
 									onQuoteChange?.(null)
 								}
-							} : 
+							} :
 							(val: string | ((prev: string) => string)) => {
 								const next = typeof val === 'function' ? val(value) : val
 								if (next === '') {
@@ -9,7 +9,8 @@ export function parseCodeFenceSegments(value: string): ContentSegment[] {
 	}
 
 	const segments: ContentSegment[] = []
-	const re = /```[^\n]*\r?\n([\s\S]*?)```/g
+	// Многострочный ```\ncode\n``` и однострочный ```code``` (как уходит на бэк)
+	const re = /```[^\n]*\r?\n([\s\S]*?)```|```([^`\n]+)```/g
 	let lastIndex = 0
 	let match: RegExpExecArray | null
 
@@ -18,7 +19,7 @@ export function parseCodeFenceSegments(value: string): ContentSegment[] {
 			segments.push({ type: 'text', content: value.slice(lastIndex, match.index) })
 		}
 
-		let code = match[1]
+		let code = match[1] ?? match[2] ?? ''
 		if (code.endsWith('\n')) {
 			code = code.slice(0, -1)
 		}
@@ -30,11 +30,8 @@ export const SendBtn = ({ loading, unpinImage, input, sendMessage, setInput, req
 			id='text-models-tour-4'
 			onClick={async () => {
 				if (!loading) {
-					const isSend = sendMessage(input, required)
-					if (isSend) {
-						setInput('')
-						if (unpinImage) unpinImage()
-					}
+					// Parent (submitMessage) already clears draft / quote / image on success
+					sendMessage(input, required)
 				}
 			}}
 			height={28}