fix(chat): make sendMessage calls fire-and-forget with error handling

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

@@ -494,12 +494,12 @@ export const ChatInput: React.FC<ChatInputProps> = ({ onOpenSettings, scrollToBo
             ...additionalParts.flatMap(p => p.attachments ?? []),
         ];
 
-        await sendMessage(
-            primaryText, 
-            currentProviderId, 
-            currentModelId, 
-            currentAgentName, 
-            primaryAttachments, 
+        void sendMessage(
+            primaryText,
+            currentProviderId,
+            currentModelId,
+            currentAgentName,
+            primaryAttachments,
             agentMentionName,
             additionalParts.length > 0 ? additionalParts : undefined,
             currentVariant

packages/ui/src/components/views/FilesView.tsx

@@ -418,20 +418,18 @@ export const FilesView: React.FC = () => {
     setLineSelection(null);
     setActiveMainTab('chat');
 
-    try {
-      await sendMessage(
-        message,
-        effectiveProviderId,
-        effectiveModelId,
-        sessionAgent,
-        undefined,
-        undefined,
-        undefined,
-        effectiveVariant
-      );
-    } catch (e) {
+    void sendMessage(
+      message,
+      effectiveProviderId,
+      effectiveModelId,
+      sessionAgent,
+      undefined,
+      undefined,
+      undefined,
+      effectiveVariant
+    ).catch((e) => {
       console.error('Failed to send comment', e);
-    }
+    });
   }, [lineSelection, commentText, selectedFile, fileContent, currentSessionId, currentProviderId, currentModelId, currentAgentName, currentVariant, extractSelectedCode, sendMessage, setActiveMainTab, getSessionAgentSelection, getAgentModelForSession, getAgentModelVariantForSession]);
 
   const mapDirectoryEntries = React.useCallback((dirPath: string, entries: Array<{ name: string; path: string; isDirectory: boolean }>): FileNode[] => {

packages/ui/src/components/views/PierreDiffViewer.tsx

@@ -277,20 +277,18 @@ export const PierreDiffViewer: React.FC<PierreDiffViewerProps> = ({
     setSelection(null);
     setActiveMainTab('chat');
     
-    try {
-      await sendMessage(
-        message,
-        effectiveProviderId,
-        effectiveModelId,
-        sessionAgent,
-        undefined,
-        undefined,
-        undefined,
-        effectiveVariant
-      );
-    } catch (e) {
-      console.error("Failed to send comment", e);
-    }
+    void sendMessage(
+      message,
+      effectiveProviderId,
+      effectiveModelId,
+      sessionAgent,
+      undefined,
+      undefined,
+      undefined,
+      effectiveVariant
+    ).catch((e) => {
+      console.error('Failed to send comment', e);
+    });
   }, [selection, commentText, original, modified, fileName, language, sendMessage, currentSessionId, currentProviderId, currentModelId, currentAgentName, currentVariant, setActiveMainTab, getSessionAgentSelection, getAgentModelForSession, getAgentModelVariantForSession]);
 
   ensureFlexokiThemesRegistered();

packages/ui/src/components/views/git/PullRequestSection.tsx

@@ -244,7 +244,7 @@ export const PullRequestSection: React.FC<{
         failedChecks: failed,
       }, null, 2)}`;
 
-      await useMessageStore.getState().sendMessage(
+      void useMessageStore.getState().sendMessage(
         visibleText,
         providerID,
         modelID,
@@ -257,7 +257,10 @@ export const PullRequestSection: React.FC<{
           { text: payloadText, synthetic: true },
         ],
         currentVariant
-      );
+      ).catch((e) => {
+        const message = e instanceof Error ? e.message : String(e);
+        toast.error('Failed to send message', { description: message });
+      });
     } catch (e) {
       const message = e instanceof Error ? e.message : String(e);
       toast.error('Failed to load checks', { description: message });
@@ -309,7 +312,7 @@ export const PullRequestSection: React.FC<{
         reviewComments,
       }, null, 2)}`;
 
-      await useMessageStore.getState().sendMessage(
+      void useMessageStore.getState().sendMessage(
         visibleText,
         providerID,
         modelID,
@@ -322,7 +325,10 @@ export const PullRequestSection: React.FC<{
           { text: payloadText, synthetic: true },
         ],
         currentVariant
-      );
+      ).catch((e) => {
+        const message = e instanceof Error ? e.message : String(e);
+        toast.error('Failed to send message', { description: message });
+      });
     } catch (e) {
       const message = e instanceof Error ? e.message : String(e);
       toast.error('Failed to load PR comments', { description: message });