willexecutors: fee-bound is_valid (extremes allowed), is_selected flag-only; fix merge_will crash on missing date_to_check; DNSSEC async, ical folding, pyright/ruff cleanup; refresh karen7/samanta7 fixtures

tests/test_core_heirs_extra.py

@@ -140,6 +140,7 @@ def test_prepare_lists_mixed_dust_continues():
         "dust": ["bcrt1q08z5t4x74u2883sx2qwsmzk2hj8e5n7z83e4vy", "1%", "30d"],
     })
     raised = False
+    result = None
     try:
         result, _onlyfixed = h.prepare_lists(5200, 100, wallet)
     except HeirAmountIsDustException:
@@ -166,6 +167,7 @@ def test_prepare_lists_multi_locktime_continues():
         "late_valid": ["bcrt1q08z5t4x74u2883sx2qwsmzk2hj8e5n7z83e4vy", 5000, "60d"],
     })
     raised = False
+    result = None
     try:
         result, _onlyfixed = h.prepare_lists(5200, 100, wallet)
     except HeirAmountIsDustException: