fix: pass draft starter text as command arguments

packages/ui/src/components/chat/ChatInput.tsx

@@ -1271,12 +1271,14 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({ onOpenSettings, scrollTo
     }, [inputMode, getCurrentInputSnapshot, currentSessionId, sessionPhase, autoReviewRunning, followUpBehavior, handleQueueMessage]);
 
     // Draft welcome presets: submit immediately.
-    const submitPresetPrompt = React.useCallback((text: string) => {
+    const submitPresetPrompt = React.useCallback((text: string, type: 'command' | 'skill') => {
         // The text goes straight into the submit (see SubmitOptions.presetText)
         // instead of through the composer input — the collapsed mobile pill has
         // no mounted textarea to stage it in.
         const draft = (composerRef.current?.getValue() ?? messageRef.current).trim();
-        const presetText = draft ? `${text}\n${draft}` : text;
+        // OpenCode recognizes slash commands only when their arguments follow
+        // the command on the same line. Skills retain the multiline prompt form.
+        const presetText = draft ? `${text}${type === 'command' ? ' ' : '\n'}${draft}` : text;
         void handleSubmitRef.current({ presetText });
     }, []);
 
@@ -1308,7 +1310,7 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({ onOpenSettings, scrollTo
     React.useEffect(() => {
         if (pendingPresetSubmit == null) return;
         const text = useInputStore.getState().consumePendingPresetSubmit();
-        if (text) submitPresetPrompt(text);
+        if (text) submitPresetPrompt(text.text, text.type);
     }, [pendingPresetSubmit, submitPresetPrompt]);
 
     const handleKeyDown = (e: KeyboardEvent) => {
@@ -2718,7 +2720,10 @@ const ChatInputComponent: React.FC<ChatInputProps> = ({ onOpenSettings, scrollTo
                 ) : null}
             </div>
             {newSessionDraftOpen && !isDesktopExpanded && !isMobile && !isVSCode && !isMiniChatSurface ? (
-                <DraftPresetChips onSubmit={submitPresetPrompt} className="chat-input-column mt-4" />
+                <DraftPresetChips
+                    onSubmit={(starter) => submitPresetPrompt(starter.submitText, starter.ref.type)}
+                    className="chat-input-column mt-4"
+                />
             ) : null}
         </form>