feat: collect Bybit orderbook observations for training

crypto_spot_bot/config.py

@@ -172,6 +172,8 @@ class Settings:
     bybit_rest_base_url_override: str = ""
     bybit_websocket_url_override: str = ""
     time_series_fallback_mode: str = "trend_macd"
+    market_observation_enabled: bool = True
+    market_observation_sample_seconds: float = 30.0
 
     @property
     def rest_base_url(self) -> str:
@@ -358,6 +360,10 @@ def load_settings(env_file: str | Path | None = None) -> Settings:
         time_series_fallback_mode=os.getenv(
             "TIME_SERIES_FALLBACK_MODE", "trend_macd"
         ).strip().lower(),
+        market_observation_enabled=_bool_env("MARKET_OBSERVATION_ENABLED", True),
+        market_observation_sample_seconds=_float_env(
+            "MARKET_OBSERVATION_SAMPLE_SECONDS", 30.0
+        ),
     )
     _validate_settings(settings)
     if settings.trading_mode == "live" and not settings.live_ready:
@@ -396,6 +402,8 @@ def _validate_settings(settings: Settings) -> None:
         errors.append("LIVE_RECONCILIATION_INTERVAL_SECONDS must be positive")
     if settings.time_series_fallback_mode not in {"trend_macd", "legacy"}:
         errors.append("TIME_SERIES_FALLBACK_MODE must be trend_macd or legacy")
+    if settings.market_observation_sample_seconds <= 0:
+        errors.append("MARKET_OBSERVATION_SAMPLE_SECONDS must be positive")
     if errors:
         raise ValueError("; ".join(errors))