diff --git a/apps/mobile/src/mobileNativeGitTransport.test.ts b/apps/mobile/src/mobileNativeGitTransport.test.ts
index 8472dff5..b613b018 100644
--- a/apps/mobile/src/mobileNativeGitTransport.test.ts
+++ b/apps/mobile/src/mobileNativeGitTransport.test.ts
@@ -31,6 +31,7 @@ describe('native mobile git transport', () => {
     expect(requests).toEqual([
       {
         remoteUrl: 'https://github.com/refactoringhq/tolaria.git',
+        vaultDirectoryName: 'personal-journal',
         vaultId: 'personal',
       },
     ])
diff --git a/apps/mobile/src/mobileNativeGitTransport.ts b/apps/mobile/src/mobileNativeGitTransport.ts
index e092f97d..e309f804 100644
--- a/apps/mobile/src/mobileNativeGitTransport.ts
+++ b/apps/mobile/src/mobileNativeGitTransport.ts
@@ -1,4 +1,5 @@
 import type { MobileGitTransport, MobileGitTransportRequest, MobileGitTransportResult } from './mobileGitTransport'
+import { createMobileVaultConfigFromMetadata } from './mobileVaultMetadata'
 
 type MobileGitNativeOperation = 'pull' | 'push'
 
@@ -9,6 +10,7 @@ export type MobileGitNativeModule = {
 
 export type MobileGitNativeRequest = {
   remoteUrl: string
+  vaultDirectoryName: string
   vaultId: string
 }
 
@@ -49,8 +51,10 @@ async function runNativeGitOperation({
 }
 
 function nativeRequest(request: MobileGitTransportRequest): MobileGitNativeRequest {
+  const vaultConfig = createMobileVaultConfigFromMetadata(request.vault)
   return {
     remoteUrl: request.remote.url,
+    vaultDirectoryName: vaultConfig.storage.directoryName,
     vaultId: request.vault.id,
   }
 }
diff --git a/docs/ABSTRACTIONS.md b/docs/ABSTRACTIONS.md
index e014dcb2..7b4ef9d2 100644
--- a/docs/ABSTRACTIONS.md
+++ b/docs/ABSTRACTIONS.md
@@ -468,7 +468,7 @@ The mobile app routes Git pull/push through `MobileGitTransport`. React Native U
 
 Until a native module is wired into Expo development builds, the native transport adapter returns a clear unavailable-module failure. This keeps authentication, sync status, retry UI, and future libgit2/Rust work testable without pretending that a JavaScript fallback is production Git.
 
-The native boundary request is intentionally narrow for the first spike: active vault id plus remote URL. Credentials stay behind SecureStore/OAuth/native Git credential callbacks, and remote URLs must not embed tokens.
+The native boundary request is intentionally narrow for the first spike: active vault id, app-managed vault directory name, and remote URL. Credentials stay behind SecureStore/OAuth/native Git credential callbacks, and remote URLs must not embed tokens.
 
 ### Auto-Sync
 
diff --git a/docs/MOBILE_PROGRESS.md b/docs/MOBILE_PROGRESS.md
index c79247aa..51355b87 100644
--- a/docs/MOBILE_PROGRESS.md
+++ b/docs/MOBILE_PROGRESS.md
@@ -100,6 +100,7 @@ This file is the resumable working log for Tolaria mobile. The strategy and road
 - Added the first mobile Git transport execution boundary behind the existing sync/auth plan, including explicit pull/push routing and a visible unavailable-transport failure until the native Git implementation lands.
 - Hardened TenTap link serialization so safe HTTP, mailto, and relative links persist while unsafe link destinations block draft persistence.
 - Added the first native mobile Git transport adapter contract, wiring the app to a native-module-shaped boundary that currently fails clearly until the real implementation is present.
+- Added the app-managed vault directory name to the native Git transport request so the future native module can locate the repository without deriving paths from display names.
 
 ## Next Action
 
@@ -381,6 +382,10 @@ Continue Phase 4 with editor durability:
 - `pnpm --filter @tolaria/mobile typecheck` passed after adding the native Git transport adapter contract.
 - CodeScene after adding the native Git transport adapter contract: `apps/mobile/src/MobileApp.tsx`, `apps/mobile/src/mobileNativeGitTransport.ts`, and `apps/mobile/src/mobileNativeGitTransport.test.ts` scored `10`.
 - `pnpm --filter @tolaria/mobile exec expo export --platform ios --output-dir /tmp/tolaria-mobile-export` passed after adding the native Git transport adapter contract; Metro recovered from a cache deserialize warning by doing a full crawl.
+- `pnpm --filter @tolaria/mobile test -- src/mobileNativeGitTransport.test.ts src/mobileVaultMetadata.test.ts src/mobileVaultConfig.test.ts` passed after adding the vault directory name to native Git transport requests: 44 files / 148 tests.
+- `pnpm --filter @tolaria/mobile typecheck` passed after adding the vault directory name to native Git transport requests.
+- CodeScene after adding the vault directory name to native Git transport requests: `apps/mobile/src/mobileNativeGitTransport.ts` and `apps/mobile/src/mobileNativeGitTransport.test.ts` scored `10`.
+- `pnpm --filter @tolaria/mobile exec expo export --platform ios --output-dir /tmp/tolaria-mobile-export` passed after adding the vault directory name to native Git transport requests; Metro recovered from a cache deserialize warning by doing a full crawl.
 
 ## Risks / Watch Items