Merge origin/main: reconcile ConfigWindow consolidation with Debug window + protocol updates

origin/main (23 commits) added a Debug window/log system on top of the old
separate Devices/Channels/Plot windows, plus protocol fixes (cml, mark10,
modbus_rtu, scpi) and device/profile changes. Local main (3 commits)
replaced the separate windows with a unified ConfigWindow + dock panel.

Kept local's ConfigWindow/dock architecture and ported the Debug window
onto it: new toolbar button + _open_debug(), gated by developer_mode same
as origin's version. Deduped the two independent "developer mode" toggles
that had collided in SettingsWindow (origin's General-tab checkbox gating
Debug window + device sim-mode visibility, local's Advanced-tab checkbox
setting verbose logging) into one General-tab checkbox that does both.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/core/app_settings.py b/core/app_settings.py
index e8bc7ae..ea3ac49 100644
--- a/core/app_settings.py
+++ b/core/app_settings.py
@@ -51,3 +51,22 @@ def save_settings(cfg: dict) -> None:
             json.dump(cfg, f, indent=2)
     except Exception:
         pass
+
+
+# ── Developer mode ────────────────────────────────────────────────────────
+#
+# In-memory cache so widgets that build device/config UI (Add Device dialog,
+# per-device config panels, plugin panels) can check this without needing
+# the full settings dict threaded through their constructors. MainWindow
+# keeps it in sync with the persisted setting whenever settings are
+# loaded/applied — see set_developer_mode() calls in ui/main_window.py.
+_dev_mode = True
+
+
+def is_developer_mode() -> bool:
+    return _dev_mode
+
+
+def set_developer_mode(value: bool) -> None:
+    global _dev_mode
+    _dev_mode = value