refactor main window stacked widget

[Robert0Mart]

Descritpion

• Refactor

BlocksScreen/lib/panels/mainWindow.py

• Added setup UI

BlocksScreen/lib/panels/widgets/MainWindow/cancelPage.py
BlocksScreen/lib/panels/widgets/MainWindow/connectionPage.py
BlocksScreen/lib/panels/widgets/MainWindow/notificationPage.py
BlocksScreen/lib/panels/widgets/MainWindow/updatePage.py

• organized files into they own folder

BlocksScreen/lib/ui/mainWindow.ui
BlocksScreen/lib/ui/mainWindow_ui.py
BlocksScreen/lib/ui/mainWindow_v2.ui
BlocksScreen/lib/ui/mainWindow_v2_ui.py

• deleted unused files after refactor

tests/panels/conftest.py

• stop stale lib.utils stub leaking from tests/lib, breaking mainWindow test collection

tests/panels/test_main_window_unit.py

• fix test fixture: main_content_widget/printTab read flat off self, not self.ui

scripts/requirements-dev.txt

• added missing numpy dependency

[gmmcosta15]

What's good

• Drops the generated mainWindow.ui/mainWindow_ui.py plus the unused mainWindow_v2 pair (~2.5k lines).
• Every self.ui.* reference in mainWindow.py is converted, and no other module reaches into the old Ui_MainWindow.
• The four page moves into widgets/MainWindow/ are 100% renames, and every importer (mainWindow.py, tests/panels/conftest.py, test_update_page_unit.py, test_connection_page.py) is updated in the same PR.
• _setup_ui() runs before any widget is used and currentChanged is connected after it, so the temporary setCurrentIndex(3) fires no slot.
• It sets the _setup_ui pattern the rest of the stack (#299-#332) follows.
• All 20 resource keys in _setup_ui resolve on dev.

1. mainWindow.py:1273: _setup_ui is pyuic output moved into a linted file
BlocksScreen/lib/ui is excluded from ruff (exclude) and pylint (ignore-paths). lib/panels/ is not, so these ~420 generated lines now count against the pylint score: one method with ~250 statements trips R0915 (too-many-statements) and R0914 (too-many-locals), and mainWindow.py grows to ~1690 lines. Split it by region so each piece is readable and under the limits:

def _setup_ui(self) -> None:
    """Build header bar, tab widget and tab pages."""
    self._setup_window()
    self._setup_tabs()
    self._setup_header()
    self.setCentralWidget(self.main_widget)

2. mainWindow.py:1373-1496: the four tab blocks are the same 31 lines with different names
A factory removes ~90 lines. Two quirks to keep: controlTab alone uses a 720 base width, and the filament disabled icon is really named ICON_filamente_blocked.png, so pass the blocked path explicitly or rename the resource:

def _make_tab(self, name: str, stem: str, blocked: str) -> QtWidgets.QWidget:
    tab = QtWidgets.QWidget()
    tab.setObjectName(name)
    tab.setMinimumSize(720, 420)
    tab.setMaximumSize(1024, 720)
    icon = QtGui.QIcon()
    base = ":/icons/media/main_menu/"
    icon.addPixmap(QtGui.QPixmap(f"{base}{stem}.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
    icon.addPixmap(QtGui.QPixmap(f"{base}{stem}_pressed.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.On)
    icon.addPixmap(QtGui.QPixmap(f"{base}{blocked}"), QtGui.QIcon.Mode.Disabled, QtGui.QIcon.State.On)
    self.main_content_widget.addTab(tab, icon, "")
    return tab

self.printTab = self._make_tab("printTab", "ICON_home", "ICON_home_blocked.png")

3. mainWindow.py:1663-1694: _translate wraps internal property keys
No QTranslator is installed anywhere, so _translate does nothing. Also, button_type, name and display_format are keys the paint code switches on, not user text. Routing them through translation means a future .qm could break rendering. Set them directly:

self.extruder_temp_display.setProperty("button_type", "secondary_display")
self.chamber_temp_display.setProperty("display_format", "dual")

4. mainWindow.py:1303-1305: stylesheet that does not parse
"MainWindow > {\n url(...Momcake-Thin.ttf);\n}" has no selector after > and no property before url(...), so Qt logs a parse warning on every start. It was dead in the .ui too. Now that it's hand-written code, delete it. setWindowTitle("MainWindow") and QIcon.fromTheme("applications-other") do nothing on a frameless kiosk either.

# delete the self.setStyleSheet("MainWindow > ...") call

5. mainWindow.py:1695: dead writes inside _setup_ui
setCurrentIndex(3) is overwritten by setCurrentIndex(0) at :143. The "Filament" / "nozzle" placeholder texts are overwritten by "PLA" / "0.4mm" at :228-231. Set each value once, in _setup_ui:

self.filament_type_icon.setText("PLA")
self.nozzle_size_icon.setText("0.4mm")

6. mainWindow.py:1307-1343: layout hints on widgets that have no layout
main_content_widget and main_header_layout are placed with setGeometry on a main_widget that has no layout. setSizePolicy, stretch, setSizeIncrement and setBaseSize do nothing there, and the last two only apply to top-level windows. Keep the min/max clamps and drop the rest:

self.main_content_widget.setGeometry(QtCore.QRect(0, 60, 800, 420))
self.main_content_widget.setMinimumSize(800, 400)
self.main_content_widget.setMaximumSize(1024, 720)

7. widgets/MainWindow/: new package has no __init__.py
Both lib/panels/ and lib/panels/widgets/ are regular packages, but this one is an implicit namespace package. The same applies to the folders the rest of the stack adds (Common, ControlTab, FilamentTab, PrintTab, UtilitiesTab), so one commit with six empty __init__.py files covers them all. PEP 8 prefers lowercase package names, optional since the whole stack uses PascalCase.

# BlocksScreen/lib/panels/widgets/MainWindow/__init__.py
"""Main-window overlay pages: cancel, connection, notification, update."""

8. mainWindow.py:26-30: imports are interleaved
isort sorts case-sensitively, so the MainWindow.* imports group before basePopup. The default ruff selection has no I, so CI won't flag it, but ruff check --select I --fix will:

from lib.panels.widgets.MainWindow.cancelPage import CancelPage
from lib.panels.widgets.MainWindow.connectionPage import ConnectionPage
from lib.panels.widgets.MainWindow.notificationPage import NotificationPage
from lib.panels.widgets.MainWindow.updatePage import UpdatePage
from lib.panels.widgets.basePopup import BasePopup
from lib.panels.widgets.loadWidget import LoadingOverlayWidget

9. scripts/requirements-dev.txt:10: second copy of the numpy==2.1.0 pin
scripts/requirements.txt:5 already pins it (for blocks_Scrollbar.py). Two copies will drift, include the runtime file instead:

-r requirements.txt

10. tests/panels/conftest.py:21-23: global purge of every lib.* module
This runs at collection time and also evicts real modules that other test directories already imported in the same xdist worker. Any later string patch such as patch("lib.utils.x.Y") re-imports a fresh copy and patches that copy instead of the one the test holds. The comment names the real culprit (tests/lib/conftest.py leaking a bare MagicMock for lib.utils), so fix the leak there:

# tests/lib/conftest.py
@pytest.fixture(autouse=True)
def _lib_utils_stub(monkeypatch):
    monkeypatch.setitem(sys.modules, "lib.utils", MagicMock())

11. tests/panels/conftest.py:52,104: stub left for a deleted module
lib.ui.mainWindow_ui / Ui_MainWindow are still stubbed, but this PR deletes that module:

# drop "lib.ui.mainWindow_ui" from _STUB_MODULES and the Ui_MainWindow assignment