diff --git a/gitnexus/src/storage/storage-resolver.ts b/gitnexus/src/storage/storage-resolver.ts
index a34c19306..031d8b909 100644
--- a/gitnexus/src/storage/storage-resolver.ts
+++ b/gitnexus/src/storage/storage-resolver.ts
@@ -9,7 +9,7 @@ import {
   LEGACY_METADATA_FILE,
   LBUG_DIRECTORY,
 } from './storage-constants.js';
-import { resolveSharedStore } from './shared-store.js';
+import { resolveGraphPath, resolveSharedStore } from './shared-store.js';
 import { slotNameForCanonicalPath, STORAGE_PATH_ENV, STORAGE_ROOT_ENV } from './storage-slot.js';
 
 export { STORAGE_PATH_ENV, STORAGE_ROOT_ENV };
@@ -387,8 +387,13 @@ const inspectCodeIndexDB = async (
   if (lbugRel.startsWith('..') || path.isAbsolute(lbugRel)) {
     return { present: false };
   }
+  // A shared-store checkout slot (#3352) may read a commit graph instead of
+  // owning one; `resolveGraphPath` only returns a path inside the same store's
+  // commit graphs, else the slot's own graph.
+  const graphPath = resolveGraphPath(resolved);
+  const target = graphPath === lbugPath ? lbugPath : graphPath;
   try {
-    await fsp.access(lbugPath);
+    await fsp.access(target);
     return { present: true };
   } catch (error) {
     const code = (error as NodeJS.ErrnoException)?.code;
diff --git a/gitnexus/test/integration/shared-store-analyze.test.ts b/gitnexus/test/integration/shared-store-analyze.test.ts
index 862e667c7..844505bf4 100644
--- a/gitnexus/test/integration/shared-store-analyze.test.ts
+++ b/gitnexus/test/integration/shared-store-analyze.test.ts
@@ -107,6 +107,20 @@ describe('shared sibling store analyze (#3352)', () => {
     }
   }, 180_000);
 
+  it('reports a checkout that reads a commit graph as indexed', async () => {
+    const { runFullAnalysis } = await import('../../src/core/run-analyze.js');
+    await runFullAnalysis(wtA, {}, { onProgress: () => {} });
+    await runFullAnalysis(wtB, {}, { onProgress: () => {} });
+    const slot = layoutOf(wtB).checkoutSlot;
+    expect(existsSync(path.join(slot, 'lbug'))).toBe(false);
+
+    const { inspectRegisteredStorage } = await import('../../src/storage/storage-resolver.js');
+    const inspection = await inspectRegisteredStorage({ path: wtB, storagePath: slot });
+    expect(inspection).toMatchObject({ state: 'owned', hasCodeIndexDB: true });
+    const validated = await listRegisteredRepos({ validate: true });
+    expect(validated.map((e) => e.path)).toEqual(expect.arrayContaining([wtA, wtB]));
+  }, 180_000);
+
   it('serves a sibling the same relative file paths from the shared graph', async () => {
     const { runFullAnalysis } = await import('../../src/core/run-analyze.js');
     await runFullAnalysis(wtA, {}, { onProgress: () => {} });