feat(vault): show mnemonic flow will show at first time ; or user reset vault state;

src/config/index.ts

@@ -27,7 +27,7 @@ export const DEBUG_MODE = true;
 /**
  * Base URL for the backend API server
  */
-export const API_BASE_URL = 'http://192.168.56.103:8000';
+export const API_BASE_URL = 'http://localhost:8000';
 
 /**
  * API request timeout in milliseconds
@@ -64,6 +64,20 @@ export const API_ENDPOINTS = {
   },
 } as const;
 
+/**
+ * Vault storage key names (AsyncStorage keys only — not user-editable "initial values").
+ * - These are constants: the key names used to read/write/remove vault state in AsyncStorage.
+ * - The actual stored values (S0 data, '1') are set by the app; do not change these key strings
+ *   unless you are migrating storage (changing them would make existing data unfindable).
+ * - Placed in config so VaultScreen and MeScreen (and others) use the same keys in one place.
+ * - INITIALIZED: app sets to '1' after first mnemonic flow; SHARE_DEVICE: app stores serialized S0.
+ * - "Reset Vault State" = remove both keys; next vault open sees no S0 and shows mnemonic flow.
+ */
+export const VAULT_STORAGE_KEYS = {
+  INITIALIZED: 'sentinel_vault_initialized',
+  SHARE_DEVICE: 'sentinel_vault_s0',
+} as const;
+
 // =============================================================================
 // Helper Functions
 // =============================================================================