From b928f616e8146363e6cef8e1035b978f22c49ae2 Mon Sep 17 00:00:00 2001
From: Mikey <nordicnode@users.noreply.github.com>
Date: Wed, 2 Sep 2026 14:21:20 -0700
Subject: [PATCH] Support relative and absolute path keys in fileWindows lookup

---
 sdk/src/__tests__/read-files.test.ts | 51 ++++++++++++++++++++++++++++
 sdk/src/tools/read-files.ts          |  5 ++-
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/sdk/src/__tests__/read-files.test.ts b/sdk/src/__tests__/read-files.test.ts
index 9448c0f00b..7128febe0a 100644
--- a/sdk/src/__tests__/read-files.test.ts
+++ b/sdk/src/__tests__/read-files.test.ts
@@ -848,5 +848,56 @@ describe('getFiles', () => {
       expect(result['src/big.ts']).toContain('showing lines 10-14 of 3000')
       expect(result['src/big.ts']).toContain('showing lines 2500-2504 of 3000')
     })
+
+    test('resolves fileWindows keyed by relative path when filePaths has leading dot-slash', async () => {
+      const mockFs = createMockFs({
+        files: { '/project/src/big.ts': { content: bigFile } },
+      })
+
+      const result = await getFiles({
+        filePaths: ['./src/big.ts'],
+        cwd: '/project',
+        fs: mockFs,
+        fileWindows: { 'src/big.ts': [{ offset: 2500, limit: 10 }] },
+      })
+
+      expect(result['src/big.ts']).toContain('line 2500')
+      expect(result['src/big.ts']).toContain('showing lines 2500-2509 of 3000')
+      expect(result['src/big.ts']).not.toContain('line 100\n')
+    })
+
+    test('resolves fileWindows keyed by relative path when filePaths has absolute path', async () => {
+      const mockFs = createMockFs({
+        files: { '/project/src/big.ts': { content: bigFile } },
+      })
+
+      const result = await getFiles({
+        filePaths: ['/project/src/big.ts'],
+        cwd: '/project',
+        fs: mockFs,
+        fileWindows: { 'src/big.ts': [{ offset: 2500, limit: 10 }] },
+      })
+
+      expect(result['src/big.ts']).toContain('line 2500')
+      expect(result['src/big.ts']).toContain('showing lines 2500-2509 of 3000')
+      expect(result['src/big.ts']).not.toContain('line 100\n')
+    })
+
+    test('resolves fileWindows keyed by absolute path when filePaths has relative path', async () => {
+      const mockFs = createMockFs({
+        files: { '/project/src/big.ts': { content: bigFile } },
+      })
+
+      const result = await getFiles({
+        filePaths: ['src/big.ts'],
+        cwd: '/project',
+        fs: mockFs,
+        fileWindows: { '/project/src/big.ts': [{ offset: 2500, limit: 10 }] },
+      })
+
+      expect(result['src/big.ts']).toContain('line 2500')
+      expect(result['src/big.ts']).toContain('showing lines 2500-2509 of 3000')
+      expect(result['src/big.ts']).not.toContain('line 100\n')
+    })
   })
 })
diff --git a/sdk/src/tools/read-files.ts b/sdk/src/tools/read-files.ts
index 1a9c217919..a113a28cf0 100644
--- a/sdk/src/tools/read-files.ts
+++ b/sdk/src/tools/read-files.ts
@@ -116,7 +116,10 @@ export async function getFiles(params: {
 
       const content = await fs.readFile(fullPath, 'utf8')
 
-      const windows = fileWindows?.[filePath]
+      const windows =
+        fileWindows?.[filePath] ??
+        fileWindows?.[relativePath] ??
+        (fullPath ? fileWindows?.[fullPath] : undefined)
       const windowedContent =
         limitContent && fileWindows !== undefined
           ? (windows?.length ? windows : [{}])