Rework channel labeling and add source picker to virtual-channel creation

2026-07-29T19:10:35Z

Relabel every channel picker/header to "NAME (DEVICE/SIGNAL)" instead of the previous "DEVICE/SIGNAL (NAME)" ordering, consistently across channels_window.py (_channel_combo, ChannelPickerDialog, ChannelPipelineBlock header), plot_builder.py, plot_config.py, control_editor.py, and plot_window.py. While touching each of those pickers, added the missing `.enabled` filter that _make_picker()/_x_cb/_build_channel_picker lacked (the default-layout builders already filtered disabled channels; these manual "add channel to pane" pickers didn't). Devices window Signals tab: removed the separate "Signal ID" column (folded into the existing non-editable Device column instead of the editable Name column, to avoid corrupting the in-place channel rename feature that column already supports). Channels window Virtual Channels pane: added a "Source" dropdown next to "+ Add Channel" — picking a source pre-seeds the new derived channel with it via DerivedBlock._add_src(); leaving it on the default "none" entry keeps today's behavior of creating an empty channel. Note: docs/ToDo.md's "Channels window UI" items referred to the *live* UI (this window's PipelineTab + the Devices window's Signals tab), not SignalsListTab in this same file, which its own module docstring flags as dead/unused code kept only for old-profile compatibility — verified by grepping for any instantiation of it (none exist). Co-Authored-By: Claude Sonnet 5

labUI.git/ui/plot_config.py, branch main

Rework channel labeling and add source picker to virtual-channel creation

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