perf: add object pooling and enhanced metrics for streaming optimization

- Implement gRPC/shred connection pools for memory efficiency
- Add atomic processing time stats with auto-calibration clock
- Optimize event parsers and protocol handlers
- Refactor metrics system for advanced performance monitoring

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

@@ -228,10 +228,10 @@ impl_unified_event!(
 pub struct PumpFunBondingCurveAccountEvent {
     #[borsh(skip)]
     pub metadata: EventMetadata,
-    pub pubkey: String,
+    pub pubkey: Pubkey,
     pub executable: bool,
     pub lamports: u64,
-    pub owner: String,
+    pub owner: Pubkey,
     pub rent_epoch: u64,
     pub bonding_curve: BondingCurve,
 }
@@ -243,10 +243,10 @@ impl_unified_event!(PumpFunBondingCurveAccountEvent,);
 pub struct PumpFunGlobalAccountEvent {
     #[borsh(skip)]
     pub metadata: EventMetadata,
-    pub pubkey: String,
+    pub pubkey: Pubkey,
     pub executable: bool,
     pub lamports: u64,
-    pub owner: String,
+    pub owner: Pubkey,
     pub rent_epoch: u64,
     pub global: Global,
 }

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

@@ -41,10 +41,10 @@ pub fn bonding_curve_parser(
     if let Some(bonding_curve) = bonding_curve_decode(&account.data[8..BONDING_CURVE_SIZE + 8]) {
         Some(Box::new(PumpFunBondingCurveAccountEvent {
             metadata,
-            pubkey: account.pubkey.to_string(),
+            pubkey: account.pubkey,
             executable: account.executable,
             lamports: account.lamports,
-            owner: account.owner.to_string(),
+            owner: account.owner,
             rent_epoch: account.rent_epoch,
             bonding_curve,
         }))
@@ -91,10 +91,10 @@ pub fn global_parser(
     if let Some(global) = global_decode(&account.data[8..GLOBAL_SIZE + 8]) {
         Some(Box::new(PumpFunGlobalAccountEvent {
             metadata,
-            pubkey: account.pubkey.to_string(),
+            pubkey: account.pubkey,
             executable: account.executable,
             lamports: account.lamports,
-            owner: account.owner.to_string(),
+            owner: account.owner,
             rent_epoch: account.rent_epoch,
             global,
         }))