fix: negative PMS (práce mimo směnu) hours count in FPD totals

Web FPD check: PMS hours keep their sign (getPmsHours) instead of being
dropped when negative. Month Excel FPD column: PMS was not counted at
all; it now adds the signed PMS hours like the web.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/export_full_excel.py

@@ -87,6 +87,17 @@ def czech_holidays(year):
     return out
 
 
+def pms_hours(value):
+    """PMS (práce mimo směnu) hours — like hours_for, but negative values keep
+    their sign (hours taken off). Matches getPmsHours in FpdCheck.tsx."""
+    if value in ('A', 'B'):
+        return 12
+    try:
+        return float(value)
+    except (ValueError, TypeError):
+        return 0
+
+
 def hours_for(value):
     """Match webapp's getHoursForValue (FpdCheck.tsx):
     A and B count as 12 hours; numeric values as themselves;
@@ -463,6 +474,10 @@ def main():
                 collect(cd.get('nightValue'), is_workday)
             else:
                 collect(cd.get('v'), is_workday)
+        # PMS (práce mimo směnu) counts as worked hours, positive or negative (as in FpdCheck.tsx)
+        pms_v = (person['data'].get(str(-month)) or {}).get('v')
+        if pms_v:
+            worked += pms_hours(pms_v)
         person_fpd = month_fpd - vacation
         diff = worked - person_fpd
         dst = ws.cell(row, 72)