ChannelService (the video-channel twin of RadioService) was among the
most Rector-churned untested classes: the pass inverted many empty-else
branches across its server-tree, transcode and flag handling. Lock that
behaviour with characterization tests over the fully-runnable paths
(massEdit has no verifyPostTable/exit; StreamProcess::updateStreams is a
no-op with cache off), exercised through the dual-backend TestDb:
- transcode flag derivation (c_transcode_profile_id -> enable_transcode
1/0 by sign),
- boolean flag columns (checked => 1, edited-but-absent => 0),
- server-tree ADD (root '#' skipped, 'source' parent stored as NULL),
- setOrder writes a sequential order by the posted id list.
726 tests green.
