Add training monitor implementation

Signed-off-by: Felipe Cardoso <felipe.cardoso@hotmail.it>

backend/app/api/routes/training.py

@@ -1,29 +1,29 @@
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, HTTPException, Request
 
 from app.models.training import TrainingStatus
-from app.services.training_monitor import TrainingMonitor
 
 router = APIRouter()
-monitor = TrainingMonitor()
 
 
 @router.get("/status", response_model=TrainingStatus)
-async def get_training_status():
+async def get_training_status(request: Request):
     """
     Get current training status including progress, loss, and learning rate
     """
     try:
+        monitor = request.app.state.training_monitor
         return await monitor.get_status()
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
 
 @router.get("/log")
-async def get_training_log():
+async def get_training_log(request: Request):
     """
     Get recent training log entries
     """
     try:
+        monitor = request.app.state.training_monitor
         return await monitor.get_log()
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))