fix(subtensor): wire migrate_cleanup_swap_v3 into on_runtime_upgrade

pallets/subtensor/src/macros/hooks.rs

@@ -179,7 +179,12 @@ mod hooks {
                 // Fix lock state left behind by subnet-scoped hotkey swaps.
                 .saturating_add(migrations::migrate_fix_subnet_hotkey_lock_swaps::migrate_fix_subnet_hotkey_lock_swaps::<T>())
                 // Populate reverse lookup index for EVM address associations.
-                .saturating_add(migrations::migrate_associated_evm_address_index::migrate_associated_evm_address_index::<T>());
+                .saturating_add(migrations::migrate_associated_evm_address_index::migrate_associated_evm_address_index::<T>())
+                // Fold the deprecated SubnetTaoProvided / SubnetAlphaInProvided residuals into the
+                // main AMM reserves (issue #2793). reserve() dropped the *Provided addend, so this
+                // migration must run at upgrade to keep reserves / spot price continuous. It is
+                // HasMigrationRun-guarded and idempotent.
+                .saturating_add(migrations::migrate_cleanup_swap_v3::migrate_cleanup_swap_v3::<T>());
             weight
         }
 

pallets/subtensor/src/tests/migration.rs

@@ -3342,6 +3342,46 @@ fn test_migrate_cleanup_swap_v3() {
     });
 }
 
+// Regression test for issue #2793: migrate_cleanup_swap_v3 MUST be wired into the pallet
+// on_runtime_upgrade hook. Seeds a *Provided residual, runs the full upgrade hook, and asserts
+// the residual is folded into the main reserves. Without the wiring line in hooks.rs this fails
+// (the residual is never folded), which is exactly the regression the issue reports.
+#[test]
+fn test_migrate_cleanup_swap_v3_runs_on_runtime_upgrade() {
+    use crate::migrations::migrate_cleanup_swap_v3::deprecated_swap_maps;
+    use frame_support::traits::Hooks;
+
+    new_test_ext(1).execute_with(|| {
+        let netuid = NetUid::from(1);
+        let provided: u64 = 9876;
+
+        // Seed residuals that the wired migration must fold into the main reserves at upgrade.
+        deprecated_swap_maps::SubnetTaoProvided::<Test>::insert(netuid, TaoBalance::from(provided));
+        deprecated_swap_maps::SubnetAlphaInProvided::<Test>::insert(
+            netuid,
+            AlphaBalance::from(provided),
+        );
+
+        let tao_before = u64::from(SubnetTAO::<Test>::get(netuid));
+        let alpha_before = u64::from(SubnetAlphaIn::<Test>::get(netuid));
+
+        // Drive the real upgrade path. cleanup_swap_v3 is the last migration in the chain.
+        let _ = <crate::Pallet<Test> as Hooks<u64>>::on_runtime_upgrade();
+
+        // The wired migration folded the residual into the main reserves and cleared the maps.
+        assert!(!deprecated_swap_maps::SubnetTaoProvided::<Test>::contains_key(netuid));
+        assert!(!deprecated_swap_maps::SubnetAlphaInProvided::<Test>::contains_key(netuid));
+        assert_eq!(
+            u64::from(SubnetTAO::<Test>::get(netuid)),
+            tao_before + provided
+        );
+        assert_eq!(
+            u64::from(SubnetAlphaIn::<Test>::get(netuid)),
+            alpha_before + provided
+        );
+    });
+}
+
 #[test]
 fn test_migrate_coldkey_swap_scheduled_to_announcements() {
     new_test_ext(1000).execute_with(|| {

runtime/src/lib.rs

@@ -235,7 +235,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 428,
+    spec_version: 429,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,