diff --git a/arautopilot/studio/app.py b/arautopilot/studio/app.py
index 17f637f..9ec0795 100644
--- a/arautopilot/studio/app.py
+++ b/arautopilot/studio/app.py
@@ -80,6 +80,9 @@ def run(argv: list[str] | None = None) -> int:
     from arautopilot.studio.login_window import LoginDialog
     from arautopilot.studio.main_window import StudioMainWindow
 
+    import signal  # noqa: PLC0415
+    signal.signal(signal.SIGINT, signal.SIG_DFL)  # Ctrl+C kills the process
+
     app = QApplication(sys.argv)
     app.setApplicationName("AR-Autopilot Studio")
 
diff --git a/arautopilot/studio/editors/project_editor.py b/arautopilot/studio/editors/project_editor.py
index 5309ac5..d85f6e5 100644
--- a/arautopilot/studio/editors/project_editor.py
+++ b/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
 
diff --git a/arautopilot/studio/flash_console.py b/arautopilot/studio/flash_console.py
index bb6e75d..234ce47 100644
--- a/arautopilot/studio/flash_console.py
+++ b/arautopilot/studio/flash_console.py
@@ -31,7 +31,7 @@ import sys
 from pathlib import Path
 from typing import Optional
 
-from PySide6.QtCore import QObject, QThread, Signal
+from PySide6.QtCore import QObject, Qt, QThread, Signal
 from PySide6.QtWidgets import (
     QComboBox,
     QDialog,
@@ -148,7 +148,7 @@ class FlashConsoleWidget(QWidget):
             f"Logged in as <b>{self._session.user.display_name}</b> "
             f"({self._session.role.value})."
         )
-        header.setTextFormat(0x1)  # PlainText would lose <br/>; RichText = 1
+        header.setTextFormat(Qt.TextFormat.RichText)
         header.setWordWrap(True)
         outer.addWidget(header)
 
diff --git a/arautopilot/studio/installer_widget.py b/arautopilot/studio/installer_widget.py
index a75e2cc..f0b20d7 100644
--- a/arautopilot/studio/installer_widget.py
+++ b/arautopilot/studio/installer_widget.py
@@ -20,7 +20,7 @@ import subprocess
 import sys
 from pathlib import Path
 
-from PySide6.QtCore import QObject, QThread, Signal
+from PySide6.QtCore import QObject, Qt, QThread, Signal
 from PySide6.QtWidgets import (
     QCheckBox,
     QFileDialog,
@@ -129,7 +129,7 @@ class InstallerWidget(QWidget):
             "<span style='color:#8899AA;font-size:11px'>"
             "Genera un pendrive USB con las apps AR Electronics y la licencia del buque.</span>"
         )
-        hdr.setTextFormat(1)  # RichText
+        hdr.setTextFormat(Qt.TextFormat.RichText)  # RichText
         hdr.setWordWrap(True)
         root.addWidget(hdr)
 
@@ -220,7 +220,7 @@ class InstallerWidget(QWidget):
         root.addWidget(self._log, 1)
 
         # RBAC gate
-        can_build = self._session.has(Capability.EDIT_COMMISSIONING)
+        can_build = self._session.can(Capability.EDIT_COMMISSIONING)
         if not can_build:
             self._build_btn.setEnabled(False)
             self._build_btn.setToolTip("Requiere rol Engineer o Super Admin.")
@@ -321,7 +321,7 @@ class InstallerWidget(QWidget):
         self._set_running(False)
 
     def _set_running(self, running: bool) -> None:
-        can_build = self._session.has(Capability.EDIT_COMMISSIONING)
+        can_build = self._session.can(Capability.EDIT_COMMISSIONING)
         self._build_btn.setEnabled(not running and can_build)
         self._cancel_btn.setEnabled(running)