v0.5.57: subagents, context menu improvements, bug fixes

Author: icecrasher321

apps/docs/content/docs/en/blocks/router.mdx

@@ -2,7 +2,6 @@
 title: Router
 ---
 
-import { Callout } from 'fumadocs-ui/components/callout'
 import { Tab, Tabs } from 'fumadocs-ui/components/tabs'
 import { Image } from '@/components/ui/image'
 
@@ -102,11 +101,18 @@ Input (Lead) → Router
                 └── [Self-serve] → Workflow (Automated Onboarding)
 ```
 
+## Error Handling
+
+When the Router cannot determine an appropriate route for the given context, it will route to the **error path** instead of arbitrarily selecting a route. This happens when:
+
+- The context doesn't clearly match any of the defined route descriptions
+- The AI determines that none of the available routes are appropriate
+
 ## Best Practices
 
 - **Write clear route descriptions**: Each route description should clearly explain when that route should be selected. Be specific about the criteria.
 - **Make routes mutually exclusive**: When possible, ensure route descriptions don't overlap to prevent ambiguous routing decisions.
-- **Include an error/fallback route**: Add a catch-all route for unexpected inputs that don't match other routes.
+- **Connect an error path**: Handle cases where no route matches by connecting an error handler for graceful fallback behavior.
 - **Use descriptive route titles**: Route titles appear in the workflow canvas, so make them meaningful for readability.
 - **Test with diverse inputs**: Ensure the Router handles various input types, edge cases, and unexpected content.
 - **Monitor routing performance**: Review routing decisions regularly and refine route descriptions based on actual usage patterns.

apps/sim/app/api/copilot/chat/route.ts

@@ -802,49 +802,29 @@ export async function POST(req: NextRequest) {
               toolNames: toolCalls.map((tc) => tc?.name).filter(Boolean),
             })
 
-            // Save messages to database after streaming completes (including aborted messages)
+            // NOTE: Messages are saved by the client via update-messages endpoint with full contentBlocks.
+            // Server only updates conversationId here to avoid overwriting client's richer save.
             if (currentChat) {
-              const updatedMessages = [...conversationHistory, userMessage]
-
-              // Save assistant message if there's any content or tool calls (even partial from abort)
-              if (assistantContent.trim() || toolCalls.length > 0) {
-                const assistantMessage = {
-                  id: crypto.randomUUID(),
-                  role: 'assistant',
-                  content: assistantContent,
-                  timestamp: new Date().toISOString(),
-                  ...(toolCalls.length > 0 && { toolCalls }),
-                }
-                updatedMessages.push(assistantMessage)
-                logger.info(
-                  `[${tracker.requestId}] Saving assistant message with content (${assistantContent.length} chars) and ${toolCalls.length} tool calls`
-                )
-              } else {
-                logger.info(
-                  `[${tracker.requestId}] No assistant content or tool calls to save (aborted before response)`
-                )
-              }
-
               // Persist only a safe conversationId to avoid continuing from a state that expects tool outputs
               const previousConversationId = currentChat?.conversationId as string | undefined
               const responseId = lastSafeDoneResponseId || previousConversationId || undefined
 
-              // Update chat in database immediately (without title)
-              await db
-                .update(copilotChats)
-                .set({
-                  messages: updatedMessages,
-                  updatedAt: new Date(),
-                  ...(responseId ? { conversationId: responseId } : {}),
-                })
-                .where(eq(copilotChats.id, actualChatId!))
+              if (responseId) {
+                await db
+                  .update(copilotChats)
+                  .set({
+                    updatedAt: new Date(),
+                    conversationId: responseId,
+                  })
+                  .where(eq(copilotChats.id, actualChatId!))
 
-              logger.info(`[${tracker.requestId}] Updated chat ${actualChatId} with new messages`, {
-                messageCount: updatedMessages.length,
-                savedUserMessage: true,
-                savedAssistantMessage: assistantContent.trim().length > 0,
-                updatedConversationId: responseId || null,
-              })
+                logger.info(
+                  `[${tracker.requestId}] Updated conversationId for chat ${actualChatId}`,
+                  {
+                    updatedConversationId: responseId,
+                  }
+                )
+              }
             }
           } catch (error) {
             logger.error(`[${tracker.requestId}] Error processing stream:`, error)

apps/sim/app/api/copilot/chat/update-messages/route.ts

@@ -17,25 +17,30 @@ const logger = createLogger('CopilotChatUpdateAPI')
 const UpdateMessagesSchema = z.object({
   chatId: z.string(),
   messages: z.array(
-    z.object({
-      id: z.string(),
-      role: z.enum(['user', 'assistant']),
-      content: z.string(),
-      timestamp: z.string(),
-      toolCalls: z.array(z.any()).optional(),
-      contentBlocks: z.array(z.any()).optional(),
-      fileAttachments: z
-        .array(
-          z.object({
-            id: z.string(),
-            key: z.string(),
-            filename: z.string(),
-            media_type: z.string(),
-            size: z.number(),
-          })
-        )
-        .optional(),
-    })
+    z
+      .object({
+        id: z.string(),
+        role: z.enum(['user', 'assistant', 'system']),
+        content: z.string(),
+        timestamp: z.string(),
+        toolCalls: z.array(z.any()).optional(),
+        contentBlocks: z.array(z.any()).optional(),
+        fileAttachments: z
+          .array(
+            z.object({
+              id: z.string(),
+              key: z.string(),
+              filename: z.string(),
+              media_type: z.string(),
+              size: z.number(),
+            })
+          )
+          .optional(),
+        contexts: z.array(z.any()).optional(),
+        citations: z.array(z.any()).optional(),
+        errorType: z.string().optional(),
+      })
+      .passthrough() // Preserve any additional fields for future compatibility
   ),
   planArtifact: z.string().nullable().optional(),
   config: z
@@ -57,8 +62,33 @@ export async function POST(req: NextRequest) {
     }
 
     const body = await req.json()
+
+    // Debug: Log what we received
+    const lastMsg = body.messages?.[body.messages.length - 1]
+    if (lastMsg?.role === 'assistant') {
+      logger.info(`[${tracker.requestId}] Received messages to save`, {
+        messageCount: body.messages?.length,
+        lastMsgId: lastMsg.id,
+        lastMsgContentLength: lastMsg.content?.length || 0,
+        lastMsgContentBlockCount: lastMsg.contentBlocks?.length || 0,
+        lastMsgContentBlockTypes: lastMsg.contentBlocks?.map((b: any) => b?.type) || [],
+      })
+    }
+
     const { chatId, messages, planArtifact, config } = UpdateMessagesSchema.parse(body)
 
+    // Debug: Log what we're about to save
+    const lastMsgParsed = messages[messages.length - 1]
+    if (lastMsgParsed?.role === 'assistant') {
+      logger.info(`[${tracker.requestId}] Parsed messages to save`, {
+        messageCount: messages.length,
+        lastMsgId: lastMsgParsed.id,
+        lastMsgContentLength: lastMsgParsed.content?.length || 0,
+        lastMsgContentBlockCount: lastMsgParsed.contentBlocks?.length || 0,
+        lastMsgContentBlockTypes: lastMsgParsed.contentBlocks?.map((b: any) => b?.type) || [],
+      })
+    }
+
     // Verify that the chat belongs to the user
     const [chat] = await db
       .select()

apps/sim/app/api/copilot/context-usage/route.ts

@@ -462,9 +462,6 @@ export default function PlaygroundPage() {
               <Avatar size='lg'>
                 <AvatarFallback>LG</AvatarFallback>
               </Avatar>
-              <Avatar size='xl'>
-                <AvatarFallback>XL</AvatarFallback>
-              </Avatar>
             </VariantRow>
             <VariantRow label='with image'>
               <Avatar size='md'>
@@ -505,9 +502,6 @@ export default function PlaygroundPage() {
               <Avatar size='lg' status='online'>
                 <AvatarFallback>LG</AvatarFallback>
               </Avatar>
-              <Avatar size='xl' status='online'>
-                <AvatarFallback>XL</AvatarFallback>
-              </Avatar>
             </VariantRow>
           </Section>
 

apps/sim/app/playground/page.tsx

@@ -7,6 +7,7 @@ import type { GlobalCommand } from '@/app/workspace/[workspaceId]/providers/glob
  * ad-hoc ids or shortcuts to ensure a single source of truth.
  */
 export type CommandId =
+  | 'accept-diff-changes'
   | 'add-agent'
   | 'goto-templates'
   | 'goto-logs'
@@ -43,6 +44,11 @@ export interface CommandDefinition {
  * All global commands must be declared here to be usable.
  */
 export const COMMAND_DEFINITIONS: Record<CommandId, CommandDefinition> = {
+  'accept-diff-changes': {
+    id: 'accept-diff-changes',
+    shortcut: 'Mod+Shift+Enter',
+    allowInEditable: true,
+  },
   'add-agent': {
     id: 'add-agent',
     shortcut: 'Mod+Shift+A',

apps/sim/app/workspace/[workspaceId]/utils/commands-utils.ts

@@ -2,10 +2,10 @@
 
 import { useCallback } from 'react'
 import { createLogger } from '@sim/logger'
-import { Layout, LibraryBig, Search } from 'lucide-react'
+import { Layout, Search } from 'lucide-react'
 import Image from 'next/image'
 import { useParams, useRouter } from 'next/navigation'
-import { Button } from '@/components/emcn'
+import { Button, Library } from '@/components/emcn'
 import { AgentIcon } from '@/components/icons'
 import { cn } from '@/lib/core/utils/cn'
 import { usePreventZoom } from '@/app/workspace/[workspaceId]/w/[workflowId]/hooks'
@@ -41,7 +41,7 @@ const commands: CommandItem[] = [
   },
   {
     label: 'Logs',
-    icon: LibraryBig,
+    icon: Library,
     shortcut: 'L',
   },
   {