* refactor(cli): replace channel module globals with ChannelRuntime
Removes _cli_agent / _cli_thread_id from EvoScientist/cli/channel.py
and threads a ChannelRuntime via CommandContext.channel_runtime so
/model and /channel rebind without poking module-level state.
* fix(cli): address coderabbit review
- _auto_start_channel: bind ChannelRuntime only after
_start_channels_bus_mode succeeds, so a startup failure no longer
leaves a stale binding pointing at channels that never started.
- _sync_tui_command_completion (TUI) and the Rich CLI command-completion
paths: rebind the runtime on thread rotation, not just agent swap, so
/new and /resume keep ChannelRuntime in sync with the running thread
(matches the serve-mode hook contract).
- test_hook_syncs_channel_runtime: pin ctx.thread_id explicitly so a
bare MagicMock attribute can't silently mutate runtime.thread_id.
- New regression test covering the rebind-on-thread-rotation contract.
dinos