fix: use last conversation as default prompt value

src/blocks/components/prompt/index.tsx

@@ -156,6 +156,24 @@ const PromptPlaceholder = ( props: PromptPlaceholderProps ) => {
 		getEmbeddedPrompt();
 	}, []);
 
+	/**
+	 * Use the last conversation as the default prompt value for the text transformation actions.
+	 */
+	useEffect( () => {
+		if (
+			! props.promptID ||
+			'textTransformation' !== props.promptID ||
+			! props.resultHistory
+		) {
+			return;
+		}
+
+		const lastConversation = resultHistory?.[ resultHistory.length - 1 ]?.meta?.prompt;
+		if ( lastConversation ) {
+			onValueChange( lastConversation );
+		}
+	}, []);
+
 	useEffect( () => {
 		if ( 'loading' === status || 'present' === apiKeyStatus ) {
 			return;

src/blocks/components/prompt/prompt-input.tsx

@@ -52,8 +52,8 @@ const PromptInput = ( props: PromptInputProps ) => {
 					placeholder={ props.placeholder }
 					rows={1}
 					onKeyDown={ handleKeyDown }
+					value={ props.value }
 				>
-					{ props.value }
 				</textarea>
 				<div className="prompt-input__submit__container">
 					<Button

src/blocks/plugins/ai-content/index.tsx

@@ -206,7 +206,7 @@ const AIToolbar = ({
 						result: response?.choices?.[0]?.message.content ?? '',
 						meta: {
 							usedToken: response?.usage.total_tokens,
-							prompt: ''
+							prompt: embeddedPrompt.messages?.[ embeddedPrompt.messages.length - 1 ]?.content
 						}
 					}],
 					replaceTargetBlock: {