Update low severity issue SLA to 120h (5 days)

app/utils/sla.py

@@ -22,7 +22,7 @@ SLA_HOURS = {
     'critical': 4,
     'high':     24,
     'medium':   72,
-    'low':      168,   # 7 days
+    'low':      120,   # 5 days
 }
 
 # Fraction of the window at which an issue becomes "at risk"
@@ -32,7 +32,7 @@ AT_RISK_THRESHOLD = 0.75
 def sla_deadline(issue):
     """
     Return the datetime by which the issue must be resolved,
-    or None if the severity is not recognised.
+    or None if the severity is not recognized.
     """
     hours = SLA_HOURS.get(issue.severity)
     if hours is None:
@@ -45,7 +45,7 @@ def sla_status(issue):
     Return one of: 'ok', 'at_risk', 'breached', or None.
 
     None is returned when the issue is already resolved — SLA no longer
-    applies.  None is also returned for unrecognised severity values.
+    applies.  None is also returned for unrecognized severity values.
     """
     if issue.status == 'resolved':
         return None
@@ -69,7 +69,7 @@ def sla_hours_remaining(issue):
     """
     Return the number of hours remaining before the SLA deadline.
     Negative values indicate the deadline has already passed.
-    Returns None for resolved issues or unrecognised severities.
+    Returns None for resolved issues or unrecognized severities.
     """
     if issue.status == 'resolved':
         return None