Update AI coach calibration, fix streak animation speed, add dashboard features and target filtering

backend/main.py

@@ -223,7 +223,7 @@ def login(payload: LoginPayload, session: Session = Depends(get_session)):
             )).first()
         token_id = str(demo_user.id) if demo_user else NEHA_UUID
         return {"success": True, "role": "user", "token": token_id}
-    if payload.email == "admin@pragativeer.com" and payload.password == "admin123":
+    if payload.email == "admin@pragativeer.com" and payload.password == "Pv9#kL2$mQ8!vX4@":
         return {"success": True, "role": "admin", "token": "admin"}
         
     user = session.exec(select(models.User).where(models.User.email == payload.email)).first()