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/bonk/events.rs

@@ -1,4 +1,3 @@
-use crate::impl_unified_event;
 use crate::streaming::event_parser::common::EventMetadata;
 use crate::streaming::event_parser::protocols::bonk::types::{
     CurveParams, MintParams, PoolStatus, TradeDirection, VestingParams,
@@ -82,26 +81,26 @@ pub fn bonk_trade_event_log_decode(data: &[u8]) -> Option<BonkTradeEvent> {
 }
 
 // Macro to generate UnifiedEvent implementation, specifying the fields to be merged
-impl_unified_event!(
-    BonkTradeEvent,
-    pool_state,
-    total_base_sell,
-    virtual_base,
-    virtual_quote,
-    real_base_before,
-    real_quote_before,
-    real_base_after,
-    real_quote_after,
-    amount_in,
-    amount_out,
-    protocol_fee,
-    platform_fee,
-    creator_fee,
-    share_fee,
-    trade_direction,
-    pool_status,
-    exact_in
-);
+// impl_unified_event!(
+//     BonkTradeEvent,
+//     pool_state,
+//     total_base_sell,
+//     virtual_base,
+//     virtual_quote,
+//     real_base_before,
+//     real_quote_before,
+//     real_base_after,
+//     real_quote_after,
+//     amount_in,
+//     amount_out,
+//     protocol_fee,
+//     platform_fee,
+//     creator_fee,
+//     share_fee,
+//     trade_direction,
+//     pool_status,
+//     exact_in
+// );
 
 /// Create pool event
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
@@ -141,16 +140,16 @@ pub fn bonk_pool_create_event_log_decode(data: &[u8]) -> Option<BonkPoolCreateEv
 }
 
 // Macro to generate UnifiedEvent implementation, specifying the fields to be merged
-impl_unified_event!(
-    BonkPoolCreateEvent,
-    pool_state,
-    creator,
-    config,
-    base_mint_param,
-    curve_param,
-    vesting_param,
-    amm_fee_on
-);
+// impl_unified_event!(
+//     BonkPoolCreateEvent,
+//     pool_state,
+//     creator,
+//     config,
+//     base_mint_param,
+//     curve_param,
+//     vesting_param,
+//     amm_fee_on
+// );
 
 /// Create pool event
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
@@ -227,12 +226,12 @@ pub struct BonkMigrateToAmmEvent {
 }
 
 // Macro to generate UnifiedEvent implementation, specifying the fields to be merged
-impl_unified_event!(
-    BonkMigrateToAmmEvent,
-    base_lot_size,
-    quote_lot_size,
-    market_vault_signer_nonce
-);
+// impl_unified_event!(
+//     BonkMigrateToAmmEvent,
+//     base_lot_size,
+//     quote_lot_size,
+//     market_vault_signer_nonce
+// );
 
 // Migrate to CP Swap event
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize, BorshDeserialize)]
@@ -270,9 +269,6 @@ pub struct BonkMigrateToCpswapEvent {
     pub remaining_accounts: Vec<Pubkey>,
 }
 
-// Macro to generate UnifiedEvent implementation, specifying the fields to be merged
-impl_unified_event!(BonkMigrateToCpswapEvent,);
-
 /// 池状态
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
 pub struct BonkPoolStateAccountEvent {
@@ -284,7 +280,6 @@ pub struct BonkPoolStateAccountEvent {
     pub rent_epoch: u64,
     pub pool_state: PoolState,
 }
-impl_unified_event!(BonkPoolStateAccountEvent,);
 
 /// 全局配置
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
@@ -297,7 +292,6 @@ pub struct BonkGlobalConfigAccountEvent {
     pub rent_epoch: u64,
     pub global_config: GlobalConfig,
 }
-impl_unified_event!(BonkGlobalConfigAccountEvent,);
 
 /// 平台配置
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
@@ -310,7 +304,6 @@ pub struct BonkPlatformConfigAccountEvent {
     pub rent_epoch: u64,
     pub platform_config: PlatformConfig,
 }
-impl_unified_event!(BonkPlatformConfigAccountEvent,);
 
 /// Event discriminator constants
 pub mod discriminators {