fix: strip trailing spaces from RichTextInput user messages

Author: Algorithm5838

src/lib/components/chat/Chat.svelte

@@ -3007,14 +3007,14 @@
 											saveDraft(data, $chatId);
 										}
 									}}
-									on:submit={async (e) => {
-										clearDraft($chatId);
-										if (e.detail || files.length > 0) {
-											await tick();
+								on:submit={async (e) => {
+									clearDraft($chatId);
+									if (e.detail || files.length > 0) {
+										await tick();
 
-											submitHandler(e.detail.replaceAll('\n\n', '\n'));
-										}
-									}}
+										submitHandler(e.detail);
+									}
+								}}
 								/>
 
 								<div
@@ -3051,13 +3051,13 @@
 											saveDraft(data);
 										}
 									}}
-									on:submit={async (e) => {
-										clearDraft();
-										if (e.detail || files.length > 0) {
-											await tick();
-											submitHandler(e.detail.replaceAll('\n\n', '\n'));
-										}
-									}}
+								on:submit={async (e) => {
+									clearDraft();
+									if (e.detail || files.length > 0) {
+										await tick();
+										submitHandler(e.detail);
+									}
+								}}
 								/>
 							</div>
 						{/if}

src/lib/components/common/RichTextInput.svelte

@@ -105,6 +105,12 @@
 		}
 	});
 
+	// Emit a plain newline for <br> instead of the default "  \n" (Markdown hard-break)
+	turndownService.addRule('br', {
+		filter: 'br',
+		replacement: () => '\n'
+	});
+
 	import { onMount, onDestroy, tick, getContext } from 'svelte';
 	import { createEventDispatcher } from 'svelte';