fix: Add tests workspace directories to all Dockerfile variants

- Added COPY tests ./tests
- Added COPY tests/e2e ./tests/e2e
- Required by Cargo workspace manifest (members list includes tests/ and tests/e2e)

Wave 125 Phase 3B - Complete workspace test directory addition

services/backtesting_service/Dockerfile.dev

@@ -54,7 +54,11 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 
 # Build in development mode
 RUN cargo build \

services/backtesting_service/Dockerfile.production

@@ -57,7 +57,11 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 
 # Build backtesting service with production optimizations
 RUN cargo build \

services/ml_training_service/Dockerfile.dev

@@ -54,6 +54,8 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/ml_training_service ./services/ml_training_service
 
 # Build in development mode

services/ml_training_service/Dockerfile.production

@@ -58,6 +58,8 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/ml_training_service ./services/ml_training_service
 
 # Build ML training service with minimal features (no GPU dependencies)

services/trading_service/Dockerfile.dev

@@ -54,6 +54,8 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/trading_service ./services/trading_service
 
 # Build in development mode with all features

services/trading_service/Dockerfile.production

@@ -66,6 +66,8 @@ COPY services/load_tests ./services/load_tests
 COPY services/stress_tests ./services/stress_tests
 COPY services/integration_tests ./services/integration_tests
 COPY services/backtesting_service ./services/backtesting_service
+COPY tests ./tests
+COPY tests/e2e ./tests/e2e
 COPY services/trading_service ./services/trading_service
 
 # Build with static linking and maximum optimization