Feat/cancel market

contracts/BUILD.md

@@ -116,6 +116,7 @@ let (consensus_reached, outcome) = oracle_client.check_consensus(&market_id);
        &market_id,
        &creator,
        &factory_address,  // ← Cross-contract reference
+       &admin_address,    // ← Creator or factory admin (can cancel market)
        &usdc_address,
        &oracle_address,   // ← Cross-contract reference
        &closing_time,

contracts/contracts/boxmeout/src/factory.rs

@@ -64,6 +64,14 @@ impl MarketFactory {
             .unwrap_or(0)
     }
 
+    /// Get admin address (for market cancel authorization)
+    pub fn get_admin(env: Env) -> Address {
+        env.storage()
+            .persistent()
+            .get(&Symbol::new(&env, ADMIN_KEY))
+            .expect("Admin not set")
+    }
+
     /// Get treasury address
     pub fn get_treasury(env: Env) -> Address {
         env.storage()