From f0d3819093742d47afef01a732bdc204ff8c7fe4 Mon Sep 17 00:00:00 2001
From: Siddharth Ganesan <siddharthganesan@gmail.com>
Date: Thu, 9 Apr 2026 14:23:34 -0700
Subject: [PATCH] Fix dev

---
 apps/sim/lib/copilot/tools/handlers/vfs.test.ts        | 10 +++++-----
 .../sim/lib/copilot/tools/server/files/edit-content.ts |  4 +++-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/apps/sim/lib/copilot/tools/handlers/vfs.test.ts b/apps/sim/lib/copilot/tools/handlers/vfs.test.ts
index 40431c7445..a215c09e8b 100644
--- a/apps/sim/lib/copilot/tools/handlers/vfs.test.ts
+++ b/apps/sim/lib/copilot/tools/handlers/vfs.test.ts
@@ -4,6 +4,7 @@
 
 import { loggerMock } from '@sim/testing'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { TOOL_RESULT_MAX_INLINE_CHARS } from '@/lib/copilot/constants'
 
 const { getOrMaterializeVFS } = vi.hoisted(() => ({
   getOrMaterializeVFS: vi.fn(),
@@ -24,6 +25,8 @@ vi.mock('./upload-file-reader', () => ({
 
 import { executeVfsGrep, executeVfsRead } from './vfs'
 
+const OVERSIZED_INLINE_CONTENT = 'x'.repeat(TOOL_RESULT_MAX_INLINE_CHARS + 1)
+
 function makeVfs() {
   return {
     grep: vi.fn(),
@@ -40,10 +43,7 @@ describe('vfs handlers oversize policy', () => {
 
   it('fails oversized grep results with narrowing guidance', async () => {
     const vfs = makeVfs()
-    vfs.grep.mockReturnValue([
-      { path: 'files/a.txt', line: 1, content: 'a'.repeat(60_000) },
-      { path: 'files/b.txt', line: 2, content: 'b'.repeat(60_000) },
-    ])
+    vfs.grep.mockReturnValue([{ path: 'files/a.txt', line: 1, content: OVERSIZED_INLINE_CONTENT }])
     getOrMaterializeVFS.mockResolvedValue(vfs)
 
     const result = await executeVfsGrep(
@@ -57,7 +57,7 @@ describe('vfs handlers oversize policy', () => {
 
   it('fails oversized read results with grep guidance', async () => {
     const vfs = makeVfs()
-    vfs.read.mockReturnValue({ content: 'a'.repeat(100_001), totalLines: 1 })
+    vfs.read.mockReturnValue({ content: OVERSIZED_INLINE_CONTENT, totalLines: 1 })
     getOrMaterializeVFS.mockResolvedValue(vfs)
 
     const result = await executeVfsRead(
diff --git a/apps/sim/lib/copilot/tools/server/files/edit-content.ts b/apps/sim/lib/copilot/tools/server/files/edit-content.ts
index de32aff1a4..0e5eb93f37 100644
--- a/apps/sim/lib/copilot/tools/server/files/edit-content.ts
+++ b/apps/sim/lib/copilot/tools/server/files/edit-content.ts
@@ -103,7 +103,9 @@ export const editContentServerTool: BaseServerTool<EditContentArgs, EditContentR
         case 'append': {
           const existing = intent.existingContent ?? ''
           finalContent = docInfo.isDoc
-            ? `${existing}\n{\n${content}\n}`
+            ? existing
+              ? `${existing}\n{\n${content}\n}`
+              : content
             : existing
               ? `${existing}\n${content}`
               : content