fix(studio): Qt6 compat + Ctrl+C signal handler

- flash_console: setTextFormat(Qt.TextFormat.RichText) — int overload removed in Qt6
- installer_widget: same fix + add Qt to QtCore import
- project_editor/installer_widget: Session.has() → Session.can()
- app.py: signal.signal(SIGINT, SIG_DFL) so Ctrl+C kills the process from terminal

AR_electronics — AR-Autopilot Project

arautopilot/studio/editors/project_editor.py

@@ -330,9 +330,9 @@ class ProjectEditorWidget(QWidget):
     # ------------------------------------------------------------------
 
     def _apply_rbac(self) -> None:
-        can_commission = self._session.has(Capability.EDIT_COMMISSIONING)
-        can_gains = self._session.has(Capability.EDIT_BASE_GAINS)
-        can_compile = self._session.has(Capability.EDIT_COMMISSIONING)
+        can_commission = self._session.can(Capability.EDIT_COMMISSIONING)
+        can_gains = self._session.can(Capability.EDIT_BASE_GAINS)
+        can_compile = self._session.can(Capability.EDIT_COMMISSIONING)
 
         for w in [
             self._max_rudder_deg,
@@ -381,7 +381,7 @@ class ProjectEditorWidget(QWidget):
             self._sens_diverge_alarm,
             self._sens_diverge_failover,
         ]:
-            w.setEnabled(enabled and self._session.has(Capability.EDIT_COMMISSIONING))
+            w.setEnabled(enabled and self._session.can(Capability.EDIT_COMMISSIONING))
 
     def _on_new(self) -> None:
         self._project = None
@@ -425,7 +425,7 @@ class ProjectEditorWidget(QWidget):
             QMessageBox.critical(self, "Save error", str(exc))
 
     def _on_compile(self) -> None:
-        if not self._session.has(Capability.EDIT_COMMISSIONING):
+        if not self._session.can(Capability.EDIT_COMMISSIONING):
             QMessageBox.warning(self, "Access denied", "Engineer or Super Admin required.")
             return