Add basic backend infrastructure

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

backend/app/api/routes/training.py

@@ -0,0 +1,29 @@
+from fastapi import APIRouter, HTTPException
+
+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():
+    """
+    Get current training status including progress, loss, and learning rate
+    """
+    try:
+        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():
+    """
+    Get recent training log entries
+    """
+    try:
+        return await monitor.get_log()
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))