hr_timesheet_sheet* fixes: back to list after remove a timesheet. bulk unfreeze confirmed and pending sheets

hr_timesheet_sheet_no_review/readme/USAGE.rst

@@ -9,6 +9,12 @@ To release the sheets that were left frozen by the review workflow, go to
 many sheets, how many timesheet entries and how many hours are about to be
 released. Confirming sets those sheets back to draft and clears their reviewer.
 
+The wizard releases exactly the sheets it listed when it was opened, and the
+confirmation message counts them. A sheet frozen by somebody else while the
+dialog was on screen is not released: it shows up the next time the wizard is
+opened. Only the frozen sheets the user can see are listed, so on a
+multi-company database the figures follow the company switcher.
+
 Installing the module never changes the state of a sheet on its own: unfreezing
 is always an explicit decision of the timesheet manager. Running the wizard
 twice is safe — the second run reports zero sheets and changes nothing.
@@ -19,4 +25,11 @@ once and the reviewer of the approved ones is lost.
 To decide which sheets count as frozen, override
 ``hr_timesheet.sheet._unfreeze_domain()``. For instance, an installation that
 wants to keep its approved sheets as historical record can narrow it down to
-``[("state", "=", "confirm")]``.
+``[("state", "=", "confirm")]``. The domain is applied twice: once to list the
+sheets in the dialog, and again when the button is pressed, so a sheet it keeps
+out is never released.
+
+``hr_timesheet.sheet._unfreeze_sheets()`` takes an optional recordset. Called
+with no argument it releases every frozen sheet, as before; called with a
+recordset it releases only those of them that the domain still considers
+frozen.