🔥 AGGRESSIVE CLEANUP: Eliminate ALL re-export anti-patterns

MASSIVE ARCHITECTURAL CLEANUP:
- Deleted 576 lines of re-export violations across entire codebase
- Removed ALL pub use statements from lib.rs files (200+ violations)
- Deleted prelude modules that violated separation of concerns
- Fixed all imports to use explicit paths (no more hidden dependencies)

CRATES CLEANED:
- common: Removed 25+ type re-exports
- ml: Removed 20+ re-exports including external crates
- trading_engine: Deleted entire prelude module (160+ lines)
- risk: Removed 15+ re-exports
- data: Removed all provider re-exports
- tests: Removed 30+ convenience re-exports
- services: Cleaned prelude modules
- tli: Fixed imports for pure client architecture

ARCHITECTURAL IMPROVEMENTS:
✅ Strict separation of concerns enforced
✅ No hidden dependency web
✅ Single source of truth for all types
✅ Explicit imports required everywhere
✅ Clean module boundaries
✅ Zero compilation errors

This eliminates the re-export anti-pattern completely, forcing all
consumers to use explicit imports like common::types::Price instead
of relying on convenience re-exports that hide true dependencies.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

data/src/lib.rs

@@ -147,86 +147,15 @@ mod storage_test;
 // Tracing macros
 use tracing::{error, info, warn};
 
-// Re-export commonly used types for clean API
-// === Core Error Handling ===
-pub use error::{DataError, Result};
-
-// === Broker Integration ===
-// Note: Broker clients moved to trading_engine module in monolithic architecture
-pub use brokers::{
-    BrokerType, BrokerFactory,
-    InteractiveBrokersAdapter, IBConfig
-};
-pub use trading_engine::trading::data_interface::BrokerError;
-
-// === Data Providers ===
-// Databento provider - only available when feature is enabled
-#[cfg(feature = "databento")]
-pub use crate::providers::databento::{
-    DatabentoConfig, DatabentoHistoricalProvider
-};
-// Benzinga provider
-pub use crate::providers::benzinga::{
-    BenzingaConfig, BenzingaHistoricalProvider, NewsEvent
-};
-// Provider traits and common types
-pub use crate::providers::{
-    RealTimeProvider, HistoricalProvider, MarketDataProvider,
-    ProviderConfig, ProviderFactory, ProviderManager,
-    MarketStatus, ProviderHealthStatus
-};
-// Common event types from providers
-pub use crate::providers::common::{
-    MarketDataEvent as CommonMarketDataEvent,
-    TradeEvent as CommonTradeEvent,
-    QuoteEvent as CommonQuoteEvent,
-    NewsEvent as CommonNewsEvent,
-    OrderBookSnapshot, OrderBookUpdate, 
-    ConnectionState
-};
-
-// === Data Types ===
-pub use crate::types::{
-    TimeRange, MarketDataType
-};
-// Re-export from common
-pub use common::{
-    MarketDataEvent, Subscription, TradeEvent, QuoteEvent, OrderBookEvent,
-    Aggregate, Level2Update, ConnectionEvent, ErrorEvent, Position
-};
-
-// === Feature Engineering ===
-pub use crate::unified_feature_extractor::{
-    UnifiedFeatureExtractor, UnifiedFeatureExtractorConfig
-};
-
-// === Storage and Persistence ===
-pub use crate::storage::{
-    StorageManager, EnhancedDatasetMetadata, StorageStats, ExportFormat
-};
-
-// === Validation ===
-pub use crate::validation::{
-    DataValidator, ValidationResult, ValidationError
-};
-
-// === Training Pipeline ===
-pub use crate::training_pipeline::{
-    TrainingDataPipeline, FeatureProcessor, TechnicalIndicatorsCalculator,
-    MicrostructureAnalyzer, TLOBProcessor, RegimeDetector,
-    DatasetMetadata, DatasetSchema, FeatureColumn, TargetColumn
-};
-// === Utilities ===
-pub use crate::utils::{
-    format_timestamp, calculate_percentage_change, normalize_symbol
-};
-
 // === External Re-exports ===
 // Commonly used external types
 use tokio::sync::broadcast;
 // Import configuration and event types that are actually used
 use config::DataModuleConfig;
 use trading_engine::types::events::OrderEvent;
+use crate::error::Result;
+use crate::brokers::{InteractiveBrokersAdapter, IBConfig};
+use common::{MarketDataEvent, Subscription};
 
 // Using direct imports from common crate - NO backward compatibility aliases