feat(pumpswap): forward virtual quote reserve upgrade

src/streaming/event_parser/core/merger_event.rs

@@ -342,6 +342,11 @@ pub fn merge(instruction_event: &mut DexEvent, cpi_log_event: DexEvent) {
                 e.ix_name = cpie.ix_name.clone();
                 e.cashback_fee_basis_points = cpie.cashback_fee_basis_points;
                 e.cashback = cpie.cashback;
+                e.buyback_fee_basis_points = cpie.buyback_fee_basis_points;
+                e.buyback_fee = cpie.buyback_fee;
+                e.virtual_quote_reserves = cpie.virtual_quote_reserves;
+                e.can_boost = cpie.can_boost;
+                e.base_supply = cpie.base_supply;
                 e.is_pump_pool = cpie.is_pump_pool;
                 fill_pubkey(&mut e.base_mint, cpie.base_mint);
                 fill_pubkey(&mut e.quote_mint, cpie.quote_mint);
@@ -387,6 +392,11 @@ pub fn merge(instruction_event: &mut DexEvent, cpi_log_event: DexEvent) {
                 e.coin_creator_fee = cpie.coin_creator_fee;
                 e.cashback_fee_basis_points = cpie.cashback_fee_basis_points;
                 e.cashback = cpie.cashback;
+                e.buyback_fee_basis_points = cpie.buyback_fee_basis_points;
+                e.buyback_fee = cpie.buyback_fee;
+                e.virtual_quote_reserves = cpie.virtual_quote_reserves;
+                e.can_boost = cpie.can_boost;
+                e.base_supply = cpie.base_supply;
                 e.is_pump_pool = cpie.is_pump_pool;
                 fill_pubkey(&mut e.base_mint, cpie.base_mint);
                 fill_pubkey(&mut e.quote_mint, cpie.quote_mint);
@@ -858,6 +868,7 @@ mod tests {
     use crate::streaming::event_parser::protocols::pumpfun::events::{
         PumpFeesShareholder, PumpFunTradeEvent,
     };
+    use crate::streaming::event_parser::protocols::pumpswap::events::PumpSwapSellEvent;
 
     #[test]
     fn pumpfun_merge_keeps_instruction_context_and_copies_latest_trade_tail() {
@@ -912,6 +923,30 @@ mod tests {
         }
     }
 
+    #[test]
+    fn pumpswap_merge_preserves_signed_virtual_quote_reserves() {
+        let mut instruction_event = DexEvent::PumpSwapSellEvent(PumpSwapSellEvent::default());
+        let log_event = DexEvent::PumpSwapSellEvent(PumpSwapSellEvent {
+            virtual_quote_reserves: -500,
+            buyback_fee_basis_points: 11,
+            buyback_fee: 22,
+            can_boost: true,
+            base_supply: 33,
+            ..Default::default()
+        });
+
+        merge(&mut instruction_event, log_event);
+
+        let DexEvent::PumpSwapSellEvent(event) = instruction_event else {
+            panic!("expected PumpSwapSellEvent");
+        };
+        assert_eq!(event.virtual_quote_reserves, -500);
+        assert_eq!(event.buyback_fee_basis_points, 11);
+        assert_eq!(event.buyback_fee, 22);
+        assert!(event.can_boost);
+        assert_eq!(event.base_supply, 33);
+    }
+
     #[test]
     fn pumpfun_merge_replaces_sol_quote_sentinel_with_real_quote_mint() {
         let quote_mint = Pubkey::new_unique();

src/streaming/event_parser/protocols/pumpswap/events.rs

@@ -44,6 +44,11 @@ pub struct PumpSwapBuyEvent {
     pub ix_name: String,
     pub cashback_fee_basis_points: u64,
     pub cashback: u64,
+    pub buyback_fee_basis_points: u64,
+    pub buyback_fee: u64,
+    pub virtual_quote_reserves: i128,
+    pub can_boost: bool,
+    pub base_supply: u64,
     #[borsh(skip)]
     pub is_pump_pool: bool,
     #[borsh(skip)]
@@ -105,6 +110,11 @@ pub struct PumpSwapSellEvent {
     pub coin_creator_fee: u64,
     pub cashback_fee_basis_points: u64,
     pub cashback: u64,
+    pub buyback_fee_basis_points: u64,
+    pub buyback_fee: u64,
+    pub virtual_quote_reserves: i128,
+    pub can_boost: bool,
+    pub base_supply: u64,
     #[borsh(skip)]
     pub is_pump_pool: bool,
     #[borsh(skip)]

src/streaming/event_parser/protocols/pumpswap/types.rs

@@ -33,13 +33,12 @@ pub struct Pool {
     pub coin_creator: Pubkey,
     pub is_mayhem_mode: bool,
     pub is_cashback_coin: bool,
-    /// On-chain reserved tail (7 bytes); keep in sync with pump_amm pool account layout.
-    pub reserved: [u8; 7],
+    pub virtual_quote_reserves: i128,
 }
 
-/// Legacy pool account body (before `is_cashback_coin` + reserved).
-pub const POOL_BODY_LEGACY: usize = 1 + 2 + 32 * 6 + 8 + 32 + 1;
-/// Current pool account body including flags and reserved.
-pub const POOL_BODY: usize = POOL_BODY_LEGACY + 1 + 7;
+/// Legacy allocated pool account body.
+pub const POOL_BODY_LEGACY: usize = 244;
+/// Current serialized pool account body including signed virtual quote reserves.
+pub const POOL_BODY: usize = 253;
 
 pub const POOL_SIZE: usize = POOL_BODY;