9c08d7593d
User asked: '窗口应该可以前后左右拉' Added custom edge drag handling in MainWindow (QMainWindow's default resize support exists but ignored + we want full control for maximized state too): New methods in ui/main_window.py: - _hit_test_edge(pos) -> 'L'/'R'/'T'/'B'/'TL'/'TR'/'BL'/'BR'/'' 6px margin around window. Returns which edge (or corner) the cursor is on. Returns '' when maximized/fullscreen. - _edge_to_cursor(edge): sets Qt.SizeHor/Ver/FDiag/BDiag cursor - _do_resize(global_pos): computes new geometry based on drag delta. Respects self.minimumWidth/Height (QMainWindow's auto min size from menu/toolbar/statusbar) and screen bounds. - _restore_from_max(global_pos): when maximized, click+drag on TOP edge → showNormal() + set geometry to mouse-relative size + continue drag from 'TL' corner (like Windows native behavior) - mousePressEvent/Move/Release: hook into resize state - leaveEvent: clear cursor when leaving window - changeEvent: clear resize state on window state change State fields added in __init__: - self._resize_edge, self._resize_start_geo, self._resize_start_pos - self._resize_margin = 6 - self._dragging_from_max = False Fix: 'QTabWidget.RightSide' was wrong API; used 'QTabBar.RightSide' in the multi-tab commit (unrelated, but I noticed while testing). New test_resize.py (5 tests, all pass): - 8-region hit-test (4 edges + 4 corners) - Right-edge drag → width grows - Left-edge drag → x moves right (width limited by minW) - Top-left corner drag - Maximized + click top edge → restored to normal Existing tests (core 6/6, UI 3/3) still pass. Build: 57MB exe.