fix(workflow): cover workflow-as-tool and custom-tool fallbacks in static naming

Address review findings: resolveToolsLabel now returns the static
'Workflow' label for workflow/workflow_input entries instead of falling
through to the stored title, matching the panel chip; the panel's
custom-tool name priority now matches resolveToolsLabel (record title,
record schema function name, then stored title); and the display-name
comment no longer overstates the guarantee.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: j15z

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/tool-input/tool-input.tsx

@@ -1713,9 +1713,6 @@ export const ToolInput = memo(function ToolInput({
             ? resolveCustomToolFromReference(tool, customTools)
             : null
 
-          const customToolTitle = isCustomTool
-            ? tool.title || resolvedCustomTool?.title || 'Unknown Tool'
-            : null
           const customToolSchema = isCustomTool ? tool.schema || resolvedCustomTool?.schema : null
           const customToolParams =
             isCustomTool && customToolSchema?.function?.parameters?.properties
@@ -1747,11 +1744,14 @@ export const ToolInput = memo(function ToolInput({
                 )
               : []
 
-          // Display name comes from static sources (registry / canonical records),
-          // never from the workflow JSON's mutable `title`, so edits to the stored
-          // state cannot change what the UI shows.
+          // Display name comes from static sources (registry / canonical records)
+          // where available; the stored `title` is only a last-resort fallback for
+          // MCP tools while server data is loading and for deleted custom-tool records.
           const toolDisplayName = isCustomTool
-            ? resolvedCustomTool?.title || customToolTitle
+            ? resolvedCustomTool?.title ||
+              resolvedCustomTool?.schema?.function?.name ||
+              tool.title ||
+              'Unknown Tool'
             : isMcpTool
               ? mcpTool?.name || tool.title
               : isWorkflowTool

apps/sim/lib/workflows/subblocks/display.test.ts

@@ -128,6 +128,13 @@ describe('resolveToolsLabel', () => {
     ).toBe('not_a_real_block')
   })
 
+  it('renders the static label for workflow-as-tool entries regardless of stored title', () => {
+    expect(
+      resolveToolsLabel(toolInput, [{ type: 'workflow', title: 'Renamed By Copilot' }], [])
+    ).toBe('Workflow')
+    expect(resolveToolsLabel(toolInput, [{ type: 'workflow_input' }], [])).toBe('Workflow')
+  })
+
   it('prefers the custom tool record over the stored title', () => {
     expect(
       resolveToolsLabel(

apps/sim/lib/workflows/subblocks/display.ts

@@ -458,6 +458,8 @@ export function resolveToolsLabel(
         return t.type
       }
 
+      if (t.type === 'workflow' || t.type === 'workflow_input') return 'Workflow'
+
       if (t.type === 'custom-tool' && typeof t.customToolId === 'string') {
         const customTool = customTools.find((candidate) => candidate.id === t.customToolId)
         if (customTool?.title) return customTool.title