Unify Signals/Channels around auto-naming, plot-by-channel, and shared vars

Devices: auto-name from OS-reported port description (Device Manager /
udev string) instead of a generic label; default Serial #Channels 1;
consistent simulate-mode checkbox across backends; inline device rename.

Channels: calibration/filters move out of Signals into a Channel
"Operation" (adds Scale/Offset alongside the existing math kinds);
single-physical-source Channels get an embedded Filters block; new
Channels auto-name/auto-ID from their source and reject duplicate
names/IDs on apply; "Create Channel" button on each Signal row; renamed
"Sources" -> "Signals" in the Channels UI; Signals' READ/WRITE dir badge
(was silently-broken IN/OUT) now reflects the real writable flag.

Plot: default layout is one pane per Channel (not per device, not raw
Signals) titled by channel name; "+ Add Channel" is a checkbox dialog
instead of an inline dropdown; traces get up/down reorder; live unit
changes (e.g. a Mark-10 gauge switching lb/kgF/N/ozF) propagate to an
open pane's axis label without clobbering a manually-typed one.

Control Panel: hardware assignment now picks from the same writable-
Signals list instead of a separate device/channel combo with a
hardcoded Arduino pin list; stale visual indicator when a control's
target device/channel disconnects or disappears; documented the `vars`
bridge (Control Panel On Action Script <-> Channel scripts) in both
directions' help text and script templates.

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

1 files changed, 13 insertions, 1 deletions

diff --git a/api_layers/arduino_layer.py b/api_layers/arduino_layer.py
index 52eeb30..a3c3584 100644
--- a/api_layers/arduino_layer.py
+++ b/api_layers/arduino_layer.py
@@ -87,7 +87,7 @@ class ArduinoLayer:
     DEFAULT_DIGITAL_PINS = ["D2", "D3", "D4", "D5", "D6", "D7"]
     # Firmware DIGITAL_IN[] and DIGITAL_OUT[] arrays — match arduino_layer.py firmware sketch
     DEFAULT_DI_PINS      = ["D2", "D3", "D4"]
-    DEFAULT_DO_PINS      = ["D5", "D6", "D7", "D9", "D10", "D11"]
+    DEFAULT_DO_PINS      = ["D5", "D6", "D7", "D8", "D9", "D10", "D11", "D13"]
 
     def __init__(
         self,
@@ -563,6 +563,18 @@ class ArduinoLayer:
     def is_pyserial_available() -> bool:
         return _SERIAL_AVAILABLE
 
+    @staticmethod
+    def describe_port(port: str) -> str:
+        """OS-reported device description for a port — the same string shown
+        in Windows Device Manager or a Linux udev/lsusb listing — so an
+        auto-named device mirrors what the operator already sees outside
+        this app. Empty string if the port isn't currently enumerable
+        (e.g. simulation mode, or the device was unplugged)."""
+        for dev, desc in ArduinoLayer.list_ports():
+            if dev == port and desc:
+                return desc
+        return ""
+
     def __repr__(self):
         mode = "SIM" if self.simulate else f"HW:{self.port}@{self.baud}"
         return f"<ArduinoLayer {mode} pins={self.analog_pins}>"