docs(qt.py): Add detailed interval documentation for HeirsLockTimeEdit class behavior

qt.py

@@ -1281,10 +1281,22 @@ class _LockTimeEditor:
 
     Features:
     - Supports both raw locktime values and human-readable date formats
-    - Emits valueEdited signal when the locktime value changes
+    - Emits valueEdited signal when the locktime value is edited
     - Provides threshold-based validation for locktime values
     - Integrates with heir distribution workflows
 
+    Behavior:
+    The class handles three types of locktime values:
+    1. **Timestamps**: Raw integer values representing Unix timestamps
+    2. **Day intervals**: Values ending with 'd' (e.g., '3d' = 3 days from now)
+    3. **Year intervals**: Values ending with 'y' (e.g., '2y' = 2 years from now)
+
+    Only these formats are valid:
+    - Examples: '1609459200', '3d', '2y'
+    - Invalid: 'invalid', '5m', '10x'
+
+    The widget automatically converts day/year intervals to appropriate timestamps.
+
     Attributes:
         valueEdited (pyqtSignal): Signal emitted when the locktime value is edited
         locktime_threshold (int): Minimum threshold value for locktime (default: 50000000)
@@ -1294,7 +1306,6 @@ class _LockTimeEditor:
         default_index (int): Default index for the combo box (default: 1)
     """
 
->>>>>>> origin/doc
 class HeirsLockTimeEdit(QWidget, _LockTimeEditor):
     valueEdited = pyqtSignal()
     locktime_threshold = 50000000