feat: add configuration getters to RefundVault and ReceiptAnchor (#195)

contracts/receipt-anchor/src/lib.rs

@@ -390,6 +390,23 @@ impl ReceiptAnchor {
             .get(&DataKey::MinAnchorInterval)
             .unwrap_or(0)
     }
+    /// Returns the admin (merchant) address, or `NotInitialized` if the
+    /// contract has not been initialized.
+    pub fn get_admin(env: Env) -> Result<Address, Error> {
+        env.storage()
+            .instance()
+            .get(&DataKey::Admin)
+            .ok_or(Error::NotInitialized)
+    }
+
+    /// Returns the pruned-up-to batch ID. Batches with IDs less than or equal
+    /// to this value have been pruned and are no longer verifiable on-chain.
+    pub fn get_pruned_up_to(env: Env) -> Result<u64, Error> {
+        env.storage()
+            .instance()
+            .get(&DataKey::PrunedUpTo)
+            .ok_or(Error::NotInitialized)
+    }
 
     /// Returns the maximum number of receipts allowed in a single `anchor_batch`.
     ///

contracts/refund-vault/src/lib.rs

@@ -955,6 +955,42 @@ impl RefundVault {
         POLICY_TIMELOCK
     }
 
+    // ── Configuration getters ────────────────────────────────────────────
+
+    /// Returns the admin (merchant) address, or `NotInitialized` if the vault
+    /// has not been initialized.
+    pub fn get_admin(env: Env) -> Result<Address, Error> {
+        env.storage()
+            .instance()
+            .get(&DataKey::Admin)
+            .ok_or(Error::NotInitialized)
+    }
+
+    /// Returns the payment token address, or `NotInitialized` if the vault
+    /// has not been initialized.
+    pub fn get_token(env: Env) -> Result<Address, Error> {
+        env.storage()
+            .instance()
+            .get(&DataKey::Token)
+            .ok_or(Error::NotInitialized)
+    }
+
+    /// Returns the refund window in ledgers, or `NotInitialized` if the vault
+    /// has not been initialized. A value of 0 means no time-based restriction.
+    pub fn get_refund_window(env: Env) -> Result<u32, Error> {
+        env.storage()
+            .instance()
+            .get(&DataKey::RefundWindow)
+            .ok_or(Error::NotInitialized)
+    }
+
+    /// Returns whether the vault is currently paused.
+    pub fn is_paused(env: Env) -> bool {
+        env.storage()
+            .instance()
+            .get(&DataKey::IsPaused)
+            .unwrap_or(false)
+    }
     /// Returns the current policy deadline as a Unix timestamp (read-only).
     /// `0` means no deadline is configured.
     pub fn get_refund_deadline(env: Env) -> u64 {