3 files changed, 92 insertions, 1 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
diff --git a/core/debug_log.py b/core/debug_log.py
new file mode 100644
index 0000000..86a8a59
--- /dev/null
+++ b/core/debug_log.py
@@ -0,0 +1,65 @@
+"""
+core/debug_log.py
+
+Tees stdout/stderr into an in-memory ring buffer + Qt signal so the Debug
+window can show everything the app has printed since startup — including
+messages from background poll threads (e.g. "[CMLLayer] poll error: ...") —
+not just whatever gets printed while the window happens to be open.
+
+install() should be called once, early, before anything prints. The real
+streams are still written to, so running from a terminal is unaffected.
+"""
+
+from __future__ import annotations
+
+import sys
+from collections import deque
+from typing import Optional
+
+from PyQt6.QtCore import QObject, pyqtSignal
+
+
+class _Broadcaster(QObject):
+    line_written = pyqtSignal(str)
+
+
+class _StreamTee:
+    def __init__(self, real_stream, lines: deque, broadcaster: _Broadcaster):
+        self._real        = real_stream
+        self._lines       = lines
+        self._broadcaster = broadcaster
+
+    def write(self, text: str) -> None:
+        self._real.write(text)
+        if text:
+            self._lines.append(text)
+            self._broadcaster.line_written.emit(text)
+
+    def flush(self) -> None:
+        self._real.flush()
+
+    def isatty(self) -> bool:
+        return False
+
+
+_lines:       Optional[deque]       = None
+_broadcaster: Optional[_Broadcaster] = None
+
+
+def install(max_lines: int = 2000) -> None:
+    """Redirect sys.stdout/sys.stderr through the tee. Safe to call once."""
+    global _lines, _broadcaster
+    if _broadcaster is not None:
+        return
+    _lines       = deque(maxlen=max_lines)
+    _broadcaster = _Broadcaster()
+    sys.stdout   = _StreamTee(sys.stdout, _lines, _broadcaster)
+    sys.stderr   = _StreamTee(sys.stderr, _lines, _broadcaster)
+
+
+def get_broadcaster() -> Optional[_Broadcaster]:
+    return _broadcaster
+
+
+def get_history() -> str:
+    return "".join(_lines) if _lines is not None else ""
diff --git a/core/profile.py b/core/profile.py
index d3c7e3a..7ede859 100644
--- a/core/profile.py
+++ b/core/profile.py
@@ -302,8 +302,15 @@ class ProfileManager:
                 print(f"[Profile] Unknown device type: {dev_type}")
                 continue
             try:
-                kwargs = {k: v for k, v in dev_cfg.items() if k != "device_type"}
+                # "name" is a display label, not a constructor arg — every device
+                # factory builds its own default name internally, so apply it
+                # after construction instead of passing it through.
+                custom_name = dev_cfg.get("name")
+                kwargs = {k: v for k, v in dev_cfg.items()
+                          if k not in ("device_type", "name")}
                 dev = factory(**kwargs)
+                if custom_name:
+                    dev.info.name = custom_name
                 registry.add_instance(dev)
                 dev.connect()
                 if engine is not None: