refactor: restructure event handling from trait objects to enum pattern

- Convert UnifiedEvent from trait object (Box<dyn UnifiedEvent>) to concrete enum type
  - Remove match_event! macro in favor of native match expressions
  - Simplify event metadata access: event.event_type() -> event.metadata().event_type
  - Unify event callback signatures: Fn(Box<dyn UnifiedEvent>) -> Fn(UnifiedEvent)
  - Update all example code to use the new enum-based event system
  - Optimize type system to reduce runtime overhead and improve type safety

  Affected scope:
  - Core event parser and processor
  - All protocol event definitions (PumpFun, PumpSwap, Bonk, Raydium series, etc.)
  - gRPC and Shred streaming modules
  - All example code

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

@@ -2,7 +2,6 @@ use borsh::BorshDeserialize;
 use serde::{Deserialize, Serialize};
 use solana_sdk::pubkey::Pubkey;
 
-use crate::impl_unified_event;
 use crate::streaming::event_parser::common::EventMetadata;
 use crate::streaming::event_parser::protocols::pumpfun::types::{BondingCurve, Global};
 
@@ -37,18 +36,18 @@ pub fn pumpfun_create_token_event_log_decode(data: &[u8]) -> Option<PumpFunCreat
     borsh::from_slice::<PumpFunCreateTokenEvent>(&data[..PUMPFUN_CREATE_TOKEN_EVENT_LOG_SIZE]).ok()
 }
 
-impl_unified_event!(
-    PumpFunCreateTokenEvent,
-    mint,
-    bonding_curve,
-    user,
-    creator,
-    timestamp,
-    virtual_token_reserves,
-    virtual_sol_reserves,
-    real_token_reserves,
-    token_total_supply
-);
+// impl_unified_event!(
+//     PumpFunCreateTokenEvent,
+//     mint,
+//     bonding_curve,
+//     user,
+//     creator,
+//     timestamp,
+//     virtual_token_reserves,
+//     virtual_sol_reserves,
+//     real_token_reserves,
+//     token_total_supply
+// );
 
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
 pub struct PumpFunTradeEvent {
@@ -126,25 +125,25 @@ pub fn pumpfun_trade_event_log_decode(data: &[u8]) -> Option<PumpFunTradeEvent>
     borsh::from_slice::<PumpFunTradeEvent>(&data[..PUMPFUN_TRADE_EVENT_LOG_SIZE]).ok()
 }
 
-impl_unified_event!(
-    PumpFunTradeEvent,
-    mint,
-    sol_amount,
-    token_amount,
-    is_buy,
-    user,
-    timestamp,
-    virtual_sol_reserves,
-    virtual_token_reserves,
-    real_sol_reserves,
-    real_token_reserves,
-    fee_recipient,
-    fee_basis_points,
-    fee,
-    creator,
-    creator_fee_basis_points,
-    creator_fee
-);
+// impl_unified_event!(
+//     PumpFunTradeEvent,
+//     mint,
+//     sol_amount,
+//     token_amount,
+//     is_buy,
+//     user,
+//     timestamp,
+//     virtual_sol_reserves,
+//     virtual_token_reserves,
+//     real_sol_reserves,
+//     real_token_reserves,
+//     fee_recipient,
+//     fee_basis_points,
+//     fee,
+//     creator,
+//     creator_fee_basis_points,
+//     creator_fee
+// );
 
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
 pub struct PumpFunMigrateEvent {
@@ -211,17 +210,17 @@ pub fn pumpfun_migrate_event_log_decode(data: &[u8]) -> Option<PumpFunMigrateEve
     borsh::from_slice::<PumpFunMigrateEvent>(&data[..PUMPFUN_MIGRATE_EVENT_LOG_SIZE]).ok()
 }
 
-impl_unified_event!(
-    PumpFunMigrateEvent,
-    user,
-    mint,
-    mint_amount,
-    sol_amount,
-    pool_migration_fee,
-    bonding_curve,
-    timestamp,
-    pool
-);
+// impl_unified_event!(
+//     PumpFunMigrateEvent,
+//     user,
+//     mint,
+//     mint_amount,
+//     sol_amount,
+//     pool_migration_fee,
+//     bonding_curve,
+//     timestamp,
+//     pool
+// );
 
 /// 铸币曲线
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
@@ -236,8 +235,6 @@ pub struct PumpFunBondingCurveAccountEvent {
     pub bonding_curve: BondingCurve,
 }
 
-impl_unified_event!(PumpFunBondingCurveAccountEvent,);
-
 /// 全局配置
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
 pub struct PumpFunGlobalAccountEvent {
@@ -250,7 +247,6 @@ pub struct PumpFunGlobalAccountEvent {
     pub rent_epoch: u64,
     pub global: Global,
 }
-impl_unified_event!(PumpFunGlobalAccountEvent,);
 
 /// 事件鉴别器常量
 pub mod discriminators {