Rename signals_window.py → channels_window.py; update docstring

Reflects current design: split Physical/Virtual Channels layout,
no tabs, no legacy Signals list as primary UI.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 17 insertions, 8 deletions

diff --git a/ui/windows/signals_window.py b/ui/windows/channels_window.py
index 8a63bf1..d2a9813 100644
--- a/ui/windows/signals_window.py
+++ b/ui/windows/channels_window.py
@@ -1,12 +1,21 @@
 """
-ui/windows/signals_window.py
-
-SIGNALS window — toolbar section 3.
-
-Tabs:
-  Channels    — per-channel filter stack; user-curated list with add/remove
-  Derived     — create virtual channels from physical or derived ones
-  Signals     — flat combined list of all physical + derived signals
+ui/windows/channels_window.py
+
+CHANNELS window — toolbar section 3.
+
+Layout (QSplitter, vertical):
+  Physical Channels  — per-channel filter pipeline; add/remove channels,
+                       configure moving average, low-pass, derivative, etc.
+  Virtual Channels   — create derived channels (derivative dy/dt or dy/dx,
+                       RMS, power, difference, sum, Python expression/script)
+
+Classes:
+  ChannelsWindow        — top-level floating window
+  PipelineTab           — splitter content (physical + virtual sections)
+  ChannelPipelineBlock  — collapsible filter stack for one physical channel
+  DerivedBlock          — editor for one virtual/derived channel
+  FilterRow             — single filter stage row inside a pipeline block
+  SignalsListTab        — unused; kept for profile-load compatibility
 """
 
 from __future__ import annotations