commit 96735125f3d588401b514330d23970d0e4f9f1e9
Author: HJ Normey <hj@normey.net>
Date:   Sat Aug 30 20:00:45 2025 +0200

    Working starting point: Nautilus integration (throttled)

diff --git a/nautilus_actor_test_implementation_5x.py b/nautilus_actor_test_implementation_5x.py
new file mode 100644
index 0000000..704bf37
--- /dev/null
+++ b/nautilus_actor_test_implementation_5x.py
@@ -0,0 +1,947 @@
+
+import time
+import numpy as np
+import asyncio
+import json
+import math
+from typing import Dict, List, Optional, Tuple, Any
+from enum import Enum
+from collections import deque
+import httpx
+import random  # Added for _simulate_websocket_ticks
+
+# Nautilus imports - following test pattern
+from nautilus_trader.config import TradingNodeConfig, ImportableActorConfig
+from nautilus_trader.live.node import TradingNode
+from nautilus_trader.common.actor import Actor
+from nautilus_trader.common.config import ActorConfig
+from nautilus_trader.model.identifiers import TraderId
+from nautilus_trader.core.data import Data
+from nautilus_trader.common.component import Logger, init_logging
+
+# NEW: construct a fresh Tick for each normalized message (don't mutate immutable Data)
+from nautilus_trader.model.data import TradeTick
+from nautilus_trader.model.identifiers import InstrumentId, TradeId
+from nautilus_trader.model.objects import Price, Quantity
+from nautilus_trader.model.enums import AggressorSide
+
+# Initialize logging
+_log_guard = init_logging()
+_logger = Logger("SILOQY")
+
+# Topics - HIGH PERFORMANCE STRING TOPICS
+RAW_TOPIC = "SILOQY.RAW.TICKS"
+STRUCTURED_TOPIC = "SILOQY.STRUCTURED.TICKS"
+REGIME_TOPIC = "DOLPHIN.REGIME.RESULTS"
+SYMBOLS_DISCOVERED_TOPIC = "SILOQY.SYMBOLS.DISCOVERED"
+CANDLES_INITIAL_TOPIC = "SILOQY.CANDLES.INITIAL"
+
+# Rate limiting constant
+MIN_INTERVAL = 2.5  # seconds between API batches
+
+# Market Regime Enum
+class MarketRegime(Enum):
+    BULL = "BULL"
+    BEAR = "BEAR"
+    TRANSITION = "TRANSITION"
+    SIDEWAYS = "SIDEWAYS"
+    
+# --------------------------------------------------------------------
+# SILOQY Custom Tick - PRESERVED with fixes
+# --------------------------------------------------------------------
+class SiloqyTradeTick(TradeTick):
+    def __init__(self, instrument_id: str, price: float, size: float, ts_event: int, ts_init: int = None,
+                 open_price: float = None, candle_open_time: int = None, tick_side: str = None,
+                 exchange: str = None, liquidity_flag = None):
+        # Convert to proper Nautilus types - add venue to symbol
+        if isinstance(instrument_id, str):
+            # Add BINANCE venue if not already present
+            if '.' not in instrument_id:
+                instrument_id = f"{instrument_id}.BINANCE"
+            instr_id = InstrumentId.from_str(instrument_id)
+        else:
+            instr_id = instrument_id
+        # STEP 1 FIX: Changed precision from 4 to 8 for price, and 0 to 8 for size
+        price_obj = Price(price, precision=8) if not isinstance(price, Price) else price
+        size_obj = Quantity(size, precision=8) if not isinstance(size, Quantity) else size
+        
+        # Default aggressor side and trade ID
+        aggressor_side = AggressorSide.NO_AGGRESSOR  # Default since Binance doesn't always provide this
+        trade_id = TradeId(f"T{int(time.time_ns())}")  # Generate a trade ID
+        
+        super().__init__(
+            instrument_id=instr_id,
+            price=price_obj,
+            size=size_obj,
+            aggressor_side=aggressor_side,
+            trade_id=trade_id,
+            ts_event=int(ts_event),
+            ts_init=int(ts_init if ts_init is not None else time.time_ns())
+        )
+        
+        # Additional SILOQY fields
+        self.open_price = open_price if open_price is not None else price
+        self.candle_open_time = candle_open_time if candle_open_time is not None else int(time.time() * 1000)
+        self.tick_side = tick_side
+        self.exchange = exchange
+        self.liquidity_flag = liquidity_flag
+
+class SILOQYSymbolDiscoveryConfig(ActorConfig):
+    symbols: List[str] = []
+    candle_interval_ms: int = 15 * 60 * 1000
+    throttle_mode: bool = False
+    throttle_rate_limit_seconds: float = 10.0
+    max_symbols_throttled: int = 100
+
+class SILOQYMainActorConfig(ActorConfig):
+    candle_interval_ms: int = 15 * 60 * 1000
+    throttle_mode: bool = False
+
+class DOLPHINRegimeActorConfig(ActorConfig):
+    max_symbols: int = 5000
+    ticks_per_analysis: int = 1000
+
+class SILOQYNormalizerConfig(ActorConfig):
+    pass
+
+class SILOQYSymbolDiscoveryActor(Actor):
+    """
+    Symbol discovery with all original SILOQY algorithms preserved
+    Using Nautilus built-in ActorExecutor for task management
+    """
+    def __init__(self, config: SILOQYSymbolDiscoveryConfig):
+        super().__init__(config)
+        
+        # Preserve original SILOQY configuration
+        self.symbols = list(config.symbols) if config.symbols else []
+        self.candle_interval_ms = config.candle_interval_ms
+        self.active_candles = {}
+        
+        # Process management configuration
+        self.throttle_mode = config.throttle_mode
+        self.throttle_rate_limit_seconds = config.throttle_rate_limit_seconds
+        self.max_symbols_throttled = config.max_symbols_throttled
+        
+        if self.throttle_mode:
+            self.log.warning("THROTTLE MODE ENABLED - Running in dev/test configuration")
+            self.log.warning(f"Rate limit: {self.throttle_rate_limit_seconds}s between batches")
+            self.log.warning(f"Symbol limit: {self.max_symbols_throttled} symbols max")
+        
+        self.log.info("SILOQYSymbolDiscoveryActor initialized with Nautilus ActorExecutor")
+    
+    def on_start(self) -> None:
+        """Start the actor - using Nautilus ActorExecutor"""
+        self.log.info("Nautilus ActorExecutor: SILOQYSymbolDiscoveryActor starting")
+        
+        # Use Nautilus ActorExecutor for task management
+        if hasattr(self, '_executor') and self._executor:
+            self.log.info("Nautilus ActorExecutor: Using registered executor for async initialization")
+            future = self._executor.submit(self.on_start_async())
+            self.log.info("Nautilus ActorExecutor: Symbol discovery task submitted")
+        else:
+            self.log.warning("Nautilus ActorExecutor: No executor registered, falling back to asyncio")
+            asyncio.create_task(self.on_start_async())
+    
+    def on_stop(self) -> None:
+        """Stop the actor - Nautilus handles executor cleanup"""
+        self.log.info("Nautilus ActorExecutor: SILOQYSymbolDiscoveryActor stopping")
+        # Nautilus kernel handles executor shutdown - no manual cleanup needed
+    
+    async def on_start_async(self) -> None:
+        self.log.info("Nautilus ActorExecutor: Starting async symbol discovery initialization")
+        
+        try:
+            # PRESERVED: Original symbol discovery algorithm
+            if not self.symbols:
+                await self._discover_all_symbols()
+            
+            # PRESERVED: Original stats fetching and candle reconstruction
+            stats, candle_opens = await self._fetch_stats_and_reconstruct_candles()
+            
+            # Set active candles from reconstruction results
+            self.active_candles = candle_opens
+            
+            # Publish results using msgbus
+            self._publish_discovery_results()
+            
+            self.log.info("Nautilus ActorExecutor: Symbol discovery completed successfully")
+            
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to complete symbol discovery: {e}")
+            # Don't re-raise, let system continue
+    
+    async def _discover_all_symbols(self):
+        """PRESERVED: Original Binance symbol discovery algorithm"""
+        self.log.info("Starting dynamic symbol discovery from Binance...")
+        url = "https://api.binance.com/api/v3/exchangeInfo"
+        
+        async with httpx.AsyncClient() as client:
+            self.log.info("Fetching exchange info from Binance API...")
+            response = await client.get(url, timeout=10)
+            if response.status_code == 200:
+                self.log.info("Successfully received exchange info")
+                data = response.json()
+                # Get all trading symbols (USDT pairs for example)
+                full_symbols = [
+                    s['symbol'] for s in data['symbols'] 
+                    if s['status'] == 'TRADING' and s['symbol'].endswith('USDT')
+                ]
+                
+                # Apply throttle mode symbol limiting
+                if self.throttle_mode:
+                    self.symbols = full_symbols[:self.max_symbols_throttled]
+                    self.log.warning(f"THROTTLE MODE: Limited to {len(self.symbols)} symbols (from {len(full_symbols)} available)")
+                else:
+                    self.symbols = full_symbols
+                
+                self.log.info(f"Discovered {len(self.symbols)} trading symbols")
+                self.log.info(f"First 10 symbols: {self.symbols[:10]}")
+            else:
+                self.log.error(f"Failed to fetch exchange info: {response.status_code}")
+                raise Exception(f"Failed to fetch exchange info: {response.status_code}")
+    
+    async def _fetch_stats_and_reconstruct_candles(self):
+        url = "https://api.binance.com/api/v3/ticker/24hr"
+        klines_url = "https://api.binance.com/api/v3/klines"
+        ticker_url = "https://api.binance.com/api/v3/ticker/price"
+        
+        # PRESERVED: Original rate limit handling with throttle mode support
+        base_rate_limit = 2.5
+        rate_limit_interval = self.throttle_rate_limit_seconds if self.throttle_mode else base_rate_limit
+        
+        if self.throttle_mode:
+            self.log.warning(f"THROTTLE MODE: Using {rate_limit_interval}s intervals (vs {base_rate_limit}s normal)")
+        
+        stats = {}
+        candle_opens = {}
+        
+        async with httpx.AsyncClient() as client:
+            total_batches = (len(self.symbols) + 49) // 50
+            for i in range(0, len(self.symbols), 50):
+                batch_num = (i // 50) + 1
+                start_time = time.time()
+                symbols_batch = self.symbols[i:i + 50]
+
+                if self.throttle_mode:
+                    self.log.info(f"THROTTLE MODE: Processing batch {batch_num}/{total_batches} with {rate_limit_interval}s delay")
+
+                # PRESERVED: Original boundary detection logic
+                current_time = int(time.time() * 1000)
+                time_into_candle = current_time % self.candle_interval_ms
+                candle_open_time = current_time - time_into_candle
+                at_boundary = (time_into_candle < 1000)
+                
+                if i == 0:  # Log initial state
+                    self.log.info("DOLPHIN: Current candle analysis:")
+                    self.log.info(f"   - Current time: {current_time}")
+                    self.log.info(f"   - Candle interval: {self.candle_interval_ms}ms ({self.candle_interval_ms//60000}m)")
+                    self.log.info(f"   - Time into candle: {time_into_candle}ms ({time_into_candle//1000}s)")
+                    self.log.info(f"   - At boundary: {at_boundary}")
+                    self.log.info(f"   - Candle open time: {candle_open_time}")
+
+                symbols_json_string = json.dumps(symbols_batch, separators=(',', ':'))
+                params = {"symbols": symbols_json_string}
+                
+                try:
+                    # PRESERVED: Original stats fetching
+                    response = await client.get(url, params=params, timeout=10)
+                    
+                    if response.status_code == 200:
+                        data = response.json()
+                        for item in data:
+                            symbol = item['symbol']
+                            stats[symbol] = {
+                                'count': int(item['count']),
+                                'quoteVolume': float(item['quoteVolume']),
+                            }
+                        self.log.info(f"Fetched stats for batch {i//50 + 1}: {len(data)} symbols")
+                        
+                    else:
+                        self.log.error(f"Error {response.status_code}: {response.text}")
+
+                    # PRESERVED: Original DOLPHIN candle reconstruction strategy
+                    if at_boundary:
+                        # AT BOUNDARY: Fetch current prices to use as opens
+                        self.log.info(f"DOLPHIN: At boundary - fetching current prices (batch {i//50 + 1})")
+                        
+                        ticker_params = {"symbols": symbols_json_string}
+                        ticker_response = await client.get(ticker_url, params=ticker_params, timeout=5)
+                        
+                        if ticker_response.status_code == 200:
+                            ticker_data = ticker_response.json()
+                            for item in ticker_data:
+                                symbol = item['symbol']
+                                current_price = float(item['price'])
+                                candle_opens[symbol] = current_price
+                                
+                            self.log.info(f"   - Fetched current prices for {len(ticker_data)} symbols")
+                        else:
+                            self.log.warning(f"   - Current price fetch failed ({ticker_response.status_code})")
+                    
+                    else:
+                        # NOT AT BOUNDARY: Fetch historical 1s kline data
+                        self.log.info(f"DOLPHIN: Not at boundary - fetching 1s kline data (batch {i//50 + 1})")
+                        
+                        for symbol in symbols_batch:
+                            try:
+                                # PRESERVED: Original kline fetching logic
+                                kline_params = {
+                                    'symbol': symbol,
+                                    'interval': '1s',
+                                    'startTime': candle_open_time,
+                                    'endTime': candle_open_time + 1000,
+                                    'limit': 1
+                                }
+                                
+                                kline_response = await client.get(klines_url, params=kline_params, timeout=5)
+                                
+                                if kline_response.status_code == 200:
+                                    kline_data = kline_response.json()
+                                    if kline_data:
+                                        open_price = float(kline_data[0][1])
+                                        candle_opens[symbol] = open_price
+                                        
+                                        if (i + len(symbols_batch)) <= 10:
+                                            self.log.info(f"   - {symbol}: reconstructed open = {open_price}")
+                                    else:
+                                        self.log.warning(f"   - {symbol}: no 1s kline data found")
+                                else:
+                                    self.log.warning(f"   - {symbol}: kline fetch failed ({kline_response.status_code})")
+                                    
+                            except Exception as e:
+                                self.log.error(f"   - {symbol}: kline fetch error: {e}")
+                        
+                        await asyncio.sleep(0.1)
+                        
+                except Exception as e:
+                    self.log.error(f"Request failed: {str(e)}")
+                
+                # PRESERVED: Original rate limiting
+                elapsed = time.time() - start_time
+                if i + 50 < len(self.symbols):
+                    sleep_time = max(0, rate_limit_interval - elapsed)
+                    if sleep_time > 0:
+                        await asyncio.sleep(sleep_time)
+                        
+        self.log.info(f"DOLPHIN: Candle reconstruction complete:")
+        self.log.info(f"   - Symbols processed: {len(self.symbols)}")
+        self.log.info(f"   - Opens reconstructed: {len(candle_opens)}")
+        self.log.info("Discovery phase ready for publishing...")
+        
+        return stats, candle_opens
+    
+    def _publish_discovery_results(self):
+        """Publish results using msgbus - Nautilus message bus integration"""
+        try:
+            self.log.info("Nautilus ActorExecutor: Publishing discovery results to other actors...")
+            if hasattr(self, 'msgbus') and self.msgbus:
+                # Publish symbols and candles as tuples
+                self.msgbus.publish(SYMBOLS_DISCOVERED_TOPIC, (self.symbols, int(time.time_ns())))
+                self.msgbus.publish(CANDLES_INITIAL_TOPIC, (self.active_candles, int(time.time_ns())))
+                
+                self.log.info(f"Nautilus ActorExecutor: Published {len(self.symbols)} symbols and {len(self.active_candles)} candles")
+                self.log.info("Nautilus ActorExecutor: Discovery phase complete - other actors can now start processing")
+            else:
+                self.log.warning("Nautilus ActorExecutor: msgbus not available for publishing")
+            
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to publish discovery results: {e}")
+
+class SILOQYMainActor(Actor):    
+    def __init__(self, config: SILOQYMainActorConfig):
+        super().__init__(config)
+        
+        # Preserve original configuration
+        self.candle_interval_ms = config.candle_interval_ms
+        self.throttle_mode = config.throttle_mode
+        self.connections = {}
+        self.connection_tasks = {}
+        
+        # Will be populated from discovery actor
+        self.symbols = []
+        self.active_candles = {}
+        
+        # WebSocket tasks - managed by Nautilus ActorExecutor
+        self.ws_tasks = []
+        
+        # Synchronization
+        self.discovery_complete = asyncio.Event()
+        
+        if self.throttle_mode:
+            self.log.warning("THROTTLE MODE: Main actor will use reduced tick generation")
+        
+        self.log.info("SILOQYMainActor initialized with Nautilus ActorExecutor")
+    
+    def on_start(self) -> None:
+        """Subscribe to discovery events - using Nautilus ActorExecutor"""
+        self.log.info("Nautilus ActorExecutor: SILOQYMainActor starting - subscribing to discovery events")
+        
+        # Subscribe to discovery results
+        if hasattr(self, 'msgbus') and self.msgbus:
+            self.msgbus.subscribe(SYMBOLS_DISCOVERED_TOPIC, self.handle_symbols_discovered)
+            self.msgbus.subscribe(CANDLES_INITIAL_TOPIC, self.handle_candles_initial)
+            self.log.info("Nautilus ActorExecutor: Subscribed to discovery topics")
+        
+        # Use Nautilus ActorExecutor for task management
+        if hasattr(self, '_executor') and self._executor:
+            self.log.info("Nautilus ActorExecutor: Using registered executor for async initialization")
+            future = self._executor.submit(self.on_start_async())
+            self.log.info("Nautilus ActorExecutor: Main actor initialization task submitted")
+        else:
+            self.log.warning("Nautilus ActorExecutor: No executor registered, falling back to asyncio")
+            asyncio.create_task(self.on_start_async())
+    
+    def on_stop(self) -> None:
+        """Stop the actor - Nautilus handles executor cleanup"""
+        self.log.info("Nautilus ActorExecutor: SILOQYMainActor stopping")
+        # Nautilus kernel handles executor shutdown - no manual cleanup needed
+    
+    async def on_start_async(self) -> None:
+        try:
+            # Wait for symbol discovery to complete
+            self.log.info("Nautilus ActorExecutor: Waiting for symbol discovery to complete...")
+            await asyncio.wait_for(self.discovery_complete.wait(), timeout=120.0)
+            
+            # PRESERVED: Start WebSocket connections
+            await self._start_websocket_connections()
+            
+            self.log.info("Nautilus ActorExecutor: SILOQYMainActor startup completed successfully")
+            
+        except asyncio.TimeoutError:
+            self.log.error("Nautilus ActorExecutor: Timeout waiting for symbol discovery")
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to start SILOQYMainActor: {e}")
+    
+    def handle_symbols_discovered(self, data):
+        """Handle symbols from discovery actor"""
+        try:
+            symbols, timestamp = data
+            self.symbols = symbols
+            self.log.info(f"Nautilus ActorExecutor: Received {len(symbols)} symbols from discovery actor")
+            
+            if self.symbols and self.active_candles:
+                self.discovery_complete.set()
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Error handling symbols discovered: {e}")
+    
+    # FIXED: SILOQYMainActor.handle_candles_initial
+    def handle_candles_initial(self, data):
+        """Handle initial candles from discovery actor and properly initialize the candle dict."""
+        try:
+            candles_received, timestamp = data
+            self.log.info(f"Nautilus ActorExecutor: Received {len(candles_received)} initial candles from discovery actor")
+
+            # FIX: Re-initialize active_candles with the full dictionary structure
+            # STEP 5 FIX: Added rounding to 8 decimals for all price values
+            self.active_candles = {}
+            for symbol, open_price in candles_received.items():
+                self.active_candles[symbol] = {
+                    'open_price': round(open_price, 8),
+                    'open_time': (int(time.time() * 1000) // self.candle_interval_ms) * self.candle_interval_ms,
+                    'high': round(open_price, 8),
+                    'low': round(open_price, 8),
+                    'close': round(open_price, 8),
+                    'volume': 0.0,
+                }
+
+            if self.symbols and self.active_candles:
+                self.discovery_complete.set()
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Error handling candles initial: {e}")
+    
+    async def _start_websocket_connections(self):
+        """PRESERVED: Original WebSocket connection logic with Nautilus ActorExecutor"""
+        self.log.info("Starting WebSocket simulation for tick generation...")
+        self.log.info(f"Will simulate ticks for first 10 of {len(self.symbols)} symbols")
+        
+        # Use Nautilus ActorExecutor for WebSocket task management
+        if hasattr(self, '_executor') and self._executor:
+            self.log.info("Nautilus ActorExecutor: Using registered executor for WebSocket simulation")
+            future = self._executor.submit(self._simulate_websocket_ticks())
+            self.log.info("Nautilus ActorExecutor: WebSocket simulation task submitted")
+        else:
+            self.log.warning("Nautilus ActorExecutor: No executor registered, falling back to asyncio")
+            task = asyncio.create_task(self._simulate_websocket_ticks())
+            self.ws_tasks.append(task)
+        
+    async def _simulate_websocket_ticks(self):        
+        # Adjust tick rate for throttle mode
+        tick_delay = 0.1 if self.throttle_mode else 0.01
+        symbols_to_simulate = min(5 if self.throttle_mode else 10, len(self.symbols))
+        
+        tick_count = 0
+        try:
+            if self.throttle_mode:
+                self.log.warning(f"THROTTLE MODE: Reduced tick generation - {symbols_to_simulate} symbols at 10 ticks/second")
+            else:
+                self.log.info("WebSocket tick simulation started - generating 100 ticks/second")
+                
+            while True:
+                for symbol in self.symbols[:symbols_to_simulate]:
+                    # STEP 2 FIX: Round price to 8 decimals, use float for quantity with 8 decimals
+                    price = round(100.0 + random.gauss(0, 0.5), 8)
+                    quantity = round(random.uniform(0.00000001, 100.0), 8)
+                    timestamp = int(time.time() * 1000)
+                    
+                    self.on_websocket_tick(symbol, price, quantity, timestamp)
+                    tick_count += 1
+                    
+                    # Log every 500 ticks in throttle mode, 1000 in normal mode
+                    log_interval = 500 if self.throttle_mode else 1000
+                    if tick_count % log_interval == 0:
+                        mode_indicator = "THROTTLE" if self.throttle_mode else ""
+                        self.log.info(f"Generated {tick_count} ticks {mode_indicator} - latest: {symbol}@{price:.2f}")
+                    
+                await asyncio.sleep(tick_delay)
+        except asyncio.CancelledError:
+            self.log.info(f"Nautilus ActorExecutor: WebSocket simulation stopped after {tick_count} ticks")
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: WebSocket simulation error: {e}")
+    
+    def on_websocket_tick(self, symbol: str, price: float, quantity: float, timestamp: int):
+        """
+        PRESERVED: Original tick processing and candle update logic
+        """
+        # PRESERVED: Original candle update logic
+        if symbol not in self.active_candles:
+            candle_open_time = (timestamp // self.candle_interval_ms) * self.candle_interval_ms
+            # STEP 4 FIX: Round all prices to 8 decimals
+            self.active_candles[symbol] = {
+                'open_price': round(price, 8),
+                'open_time': candle_open_time,
+                'high': round(price, 8),
+                'low': round(price, 8),
+                'close': round(price, 8),
+                'volume': 0.0
+            }
+        
+        candle = self.active_candles[symbol]
+        
+        # PRESERVED: Original candle rolling logic
+        current_candle_time = (timestamp // self.candle_interval_ms) * self.candle_interval_ms
+        if current_candle_time > candle['open_time']:
+            # STEP 4 FIX: Round all prices to 8 decimals
+            candle['open_price'] = round(price, 8)
+            candle['open_time'] = current_candle_time
+            candle['high'] = round(price, 8)
+            candle['low'] = round(price, 8)
+            candle['close'] = round(price, 8)
+            candle['volume'] = quantity
+        else:
+            candle['close'] = round(price, 8)
+            candle['high'] = round(max(candle['high'], price), 8)
+            candle['low'] = round(min(candle['low'], price), 8)
+            candle['volume'] += quantity
+        
+        # PRESERVED: Original high-performance tuple publishing
+        try:
+            if hasattr(self, 'msgbus') and self.msgbus:
+                # STEP 3 FIX: Round all float values to 8 decimals in the tuple
+                tick_tuple = (
+                    symbol,
+                    round(float(price), 8),
+                    round(float(quantity), 8),
+                    int(timestamp),
+                    round(float(candle['open_price']), 8),
+                    int(candle['open_time'])
+                )
+                
+                self.msgbus.publish(RAW_TOPIC, tick_tuple)
+                
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to publish tick: {e}")
+
+class DOLPHINRegimeActor(Actor):    
+    def __init__(self, config: DOLPHINRegimeActorConfig):
+        super().__init__(config)
+        
+        # PRESERVED: All original DOLPHIN configuration
+        self.max_symbols = config.max_symbols
+        self.ticks_per_analysis = config.ticks_per_analysis
+        
+        # PRESERVED: All original pre-allocated arrays for zero allocation
+        self.open_prices = np.zeros(self.max_symbols, dtype=np.float64)
+        self.close_prices = np.zeros(self.max_symbols, dtype=np.float64)
+        self.high_prices = np.zeros(self.max_symbols, dtype=np.float64)
+        self.low_prices = np.zeros(self.max_symbols, dtype=np.float64)
+        self.volumes = np.zeros(self.max_symbols, dtype=np.float64)
+        self.last_update = np.zeros(self.max_symbols, dtype=np.int64)
+        
+        # PRESERVED: All original mapping and state
+        self.symbol_to_idx = {}
+        self.idx_to_symbol = {}
+        self.active_symbols = 0
+        
+        self.tick_count = 0
+        
+        # PRESERVED: All original DOLPHIN thresholds - EXACT
+        self.bull_threshold = 0.60  # 60% bullish
+        self.bear_threshold = 0.55  # 55% bearish
+        
+        self.previous_bull_ratio = None
+        self.regime_history = deque(maxlen=100)
+        
+        # Metrics
+        self.last_metric_log = time.time_ns()
+        self.processed_ticks = 0
+        self.regime_calculations = 0
+        
+        self.log.info(f"DOLPHINRegimeActor initialized with Nautilus ActorExecutor - max_symbols: {self.max_symbols}, "
+                     f"ticks_per_analysis: {self.ticks_per_analysis}")
+    
+    def on_start(self) -> None:
+        """Subscribe to tick events - using Nautilus ActorExecutor"""
+        self.log.info("Nautilus ActorExecutor: DOLPHINRegimeActor starting - subscribing to tick events")
+        
+        if hasattr(self, 'msgbus') and self.msgbus:
+            self.msgbus.subscribe(RAW_TOPIC, self.handle_raw_tick)
+            self.log.info("Nautilus ActorExecutor: Subscribed to raw tick events")
+    
+    def on_stop(self) -> None:
+        """Stop the actor - Nautilus handles executor cleanup"""
+        self.log.info("Nautilus ActorExecutor: DOLPHINRegimeActor stopping")
+        # Nautilus kernel handles executor shutdown - no manual cleanup needed
+    
+    def handle_raw_tick(self, data):
+        """
+        PRESERVED EXACTLY: All original zero-allocation tick processing
+        Using Nautilus ActorExecutor for regime detection tasks
+        """
+        try:
+            symbol, price, size, ts_event, open_price, candle_open_time = data
+            
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Malformed tick data: {e}")
+            return
+        
+        # PRESERVED EXACTLY: All original array processing logic
+        if symbol not in self.symbol_to_idx:
+            if self.active_symbols >= self.max_symbols:
+                self.log.error(f"Nautilus ActorExecutor: Max symbols ({self.max_symbols}) exceeded")
+                return
+            
+            idx = self.active_symbols
+            self.symbol_to_idx[symbol] = idx
+            self.idx_to_symbol[idx] = symbol
+            self.active_symbols += 1
+            
+            # Initialize arrays
+            self.open_prices[idx] = open_price
+            self.high_prices[idx] = price
+            self.low_prices[idx] = price
+            self.close_prices[idx] = price
+            self.volumes[idx] = 0.0
+        else:
+            idx = self.symbol_to_idx[symbol]
+            
+            # Check if new candle period
+            if candle_open_time > self.last_update[idx]:
+                # Reset for new candle
+                self.open_prices[idx] = open_price
+                self.high_prices[idx] = price
+                self.low_prices[idx] = price
+                self.close_prices[idx] = price
+                self.volumes[idx] = size
+                self.last_update[idx] = candle_open_time
+            else:
+                # Update existing candle data
+                self.close_prices[idx] = price
+                self.high_prices[idx] = max(self.high_prices[idx], price)
+                self.low_prices[idx] = min(self.low_prices[idx], price)
+                self.volumes[idx] += size
+        
+        self.tick_count += 1
+        self.processed_ticks += 1
+        
+        # PRESERVED: Original trigger logic
+        if self.tick_count >= self.ticks_per_analysis:
+            # Use Nautilus ActorExecutor for regime detection
+            if hasattr(self, '_executor') and self._executor:
+                future = self._executor.submit(self._run_regime_detection_async())
+            else:
+                # Fallback to sync detection
+                self._run_regime_detection()
+            self.tick_count = 0
+        
+        # Periodic metrics logging
+        now = time.time_ns()
+        if now - self.last_metric_log > 1_000_000_000:
+            self.log.info(f"Nautilus ActorExecutor: DOLPHIN metrics - ticks: {self.processed_ticks}, "
+                         f"regime_calcs: {self.regime_calculations}, active_symbols: {self.active_symbols}")
+            self.last_metric_log = now
+    
+    async def _run_regime_detection_async(self):
+        try:
+            self._run_regime_detection()
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Regime detection error: {e}")
+    
+    def _run_regime_detection(self):
+        self.regime_calculations += 1
+        
+        total_symbols = self.active_symbols
+        if total_symbols == 0:
+            return
+        
+        analyzed = 0
+        bullish = 0
+        bearish = 0
+        
+        # PRESERVED: Original analysis with exact thresholds
+        for idx in range(self.active_symbols):
+            open_price = self.open_prices[idx]
+            close_price = self.close_prices[idx]
+            
+            if open_price == 0:
+                continue
+            
+            analyzed += 1
+            
+            # PRESERVED: EXACT DOLPHIN thresholds
+            change = (close_price - open_price) / open_price
+            
+            if change >= 0.0015:  # 0.15% threshold for bullish
+                bullish += 1
+            elif change <= -0.0015:  # -0.15% threshold for bearish
+                bearish += 1
+        
+        if analyzed == 0:
+            return
+        
+        # PRESERVED: Original ratio calculations
+        bull_ratio = bullish / analyzed
+        bear_ratio = bearish / analyzed
+        sideways_ratio = 1.0 - bull_ratio - bear_ratio
+        
+        # PRESERVED: Original regime determination logic
+        if bull_ratio >= self.bull_threshold:  # 60% bullish
+            regime = MarketRegime.BULL
+        elif bear_ratio >= self.bear_threshold:  # 55% bearish
+            regime = MarketRegime.BEAR
+        else:
+            # Check for transition
+            if self.previous_bull_ratio is not None:
+                ratio_change = abs(bull_ratio - self.previous_bull_ratio)
+                if ratio_change >= 0.15:  # 15% change threshold
+                    regime = MarketRegime.TRANSITION
+                else:
+                    regime = MarketRegime.SIDEWAYS
+            else:
+                regime = MarketRegime.SIDEWAYS
+        
+        # PRESERVED: Original confidence calculation
+        confidence = self._calculate_confidence(bull_ratio, bear_ratio, analyzed, total_symbols)
+        
+        self.previous_bull_ratio = bull_ratio
+        
+        # Publish regime result using Nautilus message bus
+        try:
+            if hasattr(self, 'msgbus') and self.msgbus:
+                regime_tuple = (
+                    int(time.time() * 1000),
+                    regime.value,
+                    float(bull_ratio),
+                    float(bear_ratio),
+                    float(sideways_ratio),
+                    int(analyzed),
+                    int(total_symbols),
+                    float(confidence)
+                )
+                
+                self.msgbus.publish(REGIME_TOPIC, regime_tuple)
+                
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to publish regime result: {e}")
+        
+        # Log regime changes
+        if not self.regime_history or regime != self.regime_history[-1]:
+            self.log.info(f"REGIME CHANGE: {regime.value} | Bull: {bull_ratio:.1%} "
+                         f"Bear: {bear_ratio:.1%} Sideways: {sideways_ratio:.1%} | "
+                         f"Confidence: {confidence:.1%} | Analyzed: {analyzed}/{total_symbols}")
+            self.regime_history.append(regime)
+        
+        # Periodic regime status (even without changes)
+        if self.regime_calculations % 10 == 0:  # Every 10 calculations
+            self.log.info(f"REGIME STATUS: {regime.value} | Bull: {bull_ratio:.1%} "
+                         f"Bear: {bear_ratio:.1%} | Processed: {self.processed_ticks} ticks")
+    
+    def _calculate_confidence(self, bull_ratio: float, bear_ratio: float, 
+                             analyzed: int, total: int) -> float:
+        """PRESERVED EXACTLY: Original DOLPHIN confidence calculation"""
+        if analyzed == 0:
+            return 0.0
+        
+        # Market Decisiveness
+        max_ratio = max(bull_ratio, bear_ratio)
+        decisiveness = abs(max_ratio - 0.5) * 2
+        
+        # Sample Coverage
+        coverage = analyzed / total
+        
+        # Statistical Significance
+        if max_ratio > 0 and max_ratio < 1:
+            standard_error = math.sqrt(max_ratio * (1 - max_ratio) / analyzed)
+        else:
+            standard_error = 0.0
+        
+        z_score = abs(max_ratio - 0.5) / max(standard_error, 0.001)
+        statistical_confidence = min(z_score / 3.0, 1.0)
+        
+        # Market Clarity
+        market_clarity = bull_ratio + bear_ratio
+        
+        # Weighted combination
+        confidence = (
+            decisiveness * 0.40 +
+            coverage * 0.10 +
+            statistical_confidence * 0.30 +
+            market_clarity * 0.20
+        )
+        
+        return max(0.0, min(confidence, 1.0))
+
+class SILOQYNormalizerActor(Actor):    
+    def __init__(self, config: SILOQYNormalizerConfig):
+        super().__init__(config)
+        
+        self.normalized_count = 0
+        self.last_metric_log = time.time_ns()
+        
+        self.log.info("SILOQYNormalizerActor initialized with Nautilus ActorExecutor")
+    
+    def on_start(self) -> None:
+        """Subscribe to tick events - using Nautilus ActorExecutor"""
+        self.log.info("Nautilus ActorExecutor: SILOQYNormalizerActor starting - subscribing to tick events")
+        
+        if hasattr(self, 'msgbus') and self.msgbus:
+            self.msgbus.subscribe(RAW_TOPIC, self.handle_raw_tick)
+            self.log.info("Nautilus ActorExecutor: Subscribed to raw tick events")
+    
+    def on_stop(self) -> None:
+        """Stop the actor - Nautilus handles executor cleanup"""
+        self.log.info("Nautilus ActorExecutor: SILOQYNormalizerActor stopping")
+        # Nautilus kernel handles executor shutdown - no manual cleanup needed
+    
+    def handle_raw_tick(self, data):
+        try:
+            symbol, price, size, ts_event, open_price, candle_open_time = data
+            tick = SiloqyTradeTick(
+                instrument_id=symbol,
+                price=round(float(price), 8),
+                size=round(float(size), 8),
+                ts_event=int(ts_event),
+                ts_init=int(time.time_ns()),
+                open_price=round(float(open_price), 8) if open_price is not None else round(float(price), 8),
+                candle_open_time=int(candle_open_time) if candle_open_time is not None else int(time.time() * 1000),
+                tick_side=None,  # Default to None unless Binance provides this info
+                exchange="BINANCE",  # We know this is from Binance
+                liquidity_flag=None  # Default to None unless Binance provides this info
+            )
+            
+            if hasattr(self, 'msgbus') and self.msgbus:
+                try:
+                    # Publish directly to STRUCTURED_TOPIC to match original v3.28 behavior
+                    self.msgbus.publish(STRUCTURED_TOPIC, tick)
+                    
+                except Exception as e:
+                     self.log.error(f"Nautilus ActorExecutor: Failed to publish to STRUCTURED_TOPIC: {e}")
+                    
+            # FALLBACK: Try Nautilus publish_data if msgbus not available
+            elif hasattr(self, 'publish_data'):
+                try:
+                    # Use standard Nautilus publishing as fallback
+                    self.publish_data(DataType(SiloqyTradeTick), tick)
+                except Exception as e:
+                    self.log.error(f"Nautilus ActorExecutor: Failed to publish structured data: {e}")
+            self.normalized_count += 1
+            
+            # Periodic metrics
+            now = time.time_ns()
+            if now - self.last_metric_log > 1_000_000_000:
+                self.log.info(f"Nautilus ActorExecutor: Normalizer processed: {self.normalized_count} ticks")
+                self.last_metric_log = now
+                
+        except Exception as e:
+            self.log.error(f"Nautilus ActorExecutor: Failed to handle raw tick: {e}")
+
+def test_siloqy_actors_with_nautilus_process_management():
+    """Test SILOQY actors with Nautilus built-in ActorExecutor process management"""
+    print("SILOQY Multi-Actor Test with Nautilus Built-in Process Management")
+    
+    # Configuration following test pattern - THROTTLE MODE ENABLED FOR DEV/TESTING
+    symbol_discovery_config = ImportableActorConfig(
+        actor_path="__main__:SILOQYSymbolDiscoveryActor",
+        config_path="__main__:SILOQYSymbolDiscoveryConfig",
+        config={
+            "component_id": "SILOQY-SYMBOL-DISCOVERY",
+            "symbols": [],  # Empty for dynamic discovery
+            "candle_interval_ms": 15 * 60 * 1000,
+            "throttle_mode": True,  # ENABLED: Safe for dual instance testing
+            "throttle_rate_limit_seconds": 10.0,  # 10s between batches (vs 2.5s)
+            "max_symbols_throttled": 100  # Only 100 symbols (vs 2000+)
+        }
+    )
+    
+    main_actor_config = ImportableActorConfig(
+        actor_path="__main__:SILOQYMainActor", 
+        config_path="__main__:SILOQYMainActorConfig",
+        config={
+            "component_id": "SILOQY-MAIN-ACTOR",
+            "candle_interval_ms": 15 * 60 * 1000,
+            "throttle_mode": True  # ENABLED: Reduced tick generation
+        }
+    )
+    
+    regime_actor_config = ImportableActorConfig(
+        actor_path="__main__:DOLPHINRegimeActor",
+        config_path="__main__:DOLPHINRegimeActorConfig", 
+        config={
+            "component_id": "DOLPHIN-REGIME-ACTOR",
+            "max_symbols": 5000,
+            "ticks_per_analysis": 500  # Reduced for throttle mode testing
+        }
+    )
+    
+    normalizer_config = ImportableActorConfig(
+        actor_path="__main__:SILOQYNormalizerActor",
+        config_path="__main__:SILOQYNormalizerConfig",
+        config={
+            "component_id": "SILOQY-NORMALIZER"
+        }
+    )
+    
+    # Trading node configuration - Uses Nautilus built-in process management
+    trading_config = TradingNodeConfig(
+        trader_id=TraderId("SILOQY-TRADER-001"),
+        actors=[
+            symbol_discovery_config,
+            main_actor_config, 
+            regime_actor_config,
+            normalizer_config
+        ],
+        data_clients={},  # No external data clients needed
+        exec_clients={}  # No execution clients for this test
+    )
+        
+    node = TradingNode(config=trading_config)
+    
+    try:
+        node.build()
+        print("Node built successfully with Nautilus built-in process management")
+        node.run()
+        
+    except KeyboardInterrupt:
+        print("\nSILOQY Actor test with Nautilus process management completed!")
+    except Exception as e:
+        print(f"Error: {e}")
+        import traceback
+        traceback.print_exc()
+    finally:
+        try:
+            node.dispose()
+            print("Nautilus process management: Node disposed successfully")
+        except:
+            pass
+
+if __name__ == "__main__":
+    test_siloqy_actors_with_nautilus_process_management()
\ No newline at end of file