fix: don't overlap thinking banner over conversation

src/components/chat/view/ChatInterface.tsx

@@ -286,6 +286,11 @@ function ChatInterface({
     handlePermissionDecision,
   }), [pendingPermissionRequests, handlePermissionDecision]);
 
+  // Mirrors ChatComposer's own visibility check so the message pane can
+  // reserve enough bottom space to keep the floating status tab from
+  // overlapping the last message.
+  const hasActivityIndicator = Boolean(sessionActivity && pendingPermissionRequests.length === 0);
+
   if (!selectedProject) {
     const selectedProviderLabel =
       provider === 'cursor'
@@ -321,6 +326,7 @@ function ChatInterface({
           onTouchMove={handleScroll}
           isLoadingSessionMessages={isLoadingSessionMessages}
           isProcessing={isProcessing}
+          hasActivityIndicator={hasActivityIndicator}
           chatMessages={chatMessages}
           selectedSession={selectedSession}
           currentSessionId={currentSessionId}

src/components/chat/view/subcomponents/ChatMessagesPane.tsx

@@ -24,6 +24,8 @@ interface ChatMessagesPaneProps {
   isLoadingSessionMessages: boolean;
   /** True while the viewed session has an active provider run in flight. */
   isProcessing?: boolean;
+  /** True while ChatComposer's floating activity/stop tab is rendered above the input. */
+  hasActivityIndicator?: boolean;
   chatMessages: ChatMessage[];
   selectedSession: ProjectSession | null;
   currentSessionId: string | null;
@@ -73,6 +75,7 @@ function ChatMessagesPane({
   onTouchMove,
   isLoadingSessionMessages,
   isProcessing = false,
+  hasActivityIndicator = false,
   chatMessages,
   selectedSession,
   currentSessionId,
@@ -161,7 +164,9 @@ function ChatMessagesPane({
       ref={scrollContainerRef}
       onWheel={onWheel}
       onTouchMove={onTouchMove}
-      className="chat-messages-pane relative min-h-0 flex-1 overflow-y-auto overflow-x-hidden py-3 sm:py-4"
+      className={`chat-messages-pane relative min-h-0 flex-1 overflow-y-auto overflow-x-hidden pt-3 sm:pt-4 ${
+        hasActivityIndicator ? 'pb-12 sm:pb-14' : 'pb-3 sm:pb-4'
+      }`}
     >
       <div className="mx-auto w-full max-w-[54.25rem] space-y-3 px-4 sm:space-y-4">
       {(isLoadingSessionMessages || isProcessing) && chatMessages.length === 0 ? (