ci: state where the nightly race and fuzz sweeps run

Assisted-by: GLM 5.3

.gitea/workflows/race.yml

@@ -1,11 +1,11 @@
-# Race, Go. Dispatched by hand, run nightly on a schedule, and run as part of
+# Race, Go. Dispatched by hand and swept nightly on a schedule.
-# the release gates.
 #
 # The race detector roughly doubles both time and memory, which the shared runner box
-# cannot afford on every push. Locally it belongs to `just gates`, which runs it once per
+# cannot afford on every push. Locally it belongs to `just gates`, which runs it once
-# task; here it is an explicit decision rather than a routine. The schedule is the
+# per task; here it is an explicit decision rather than a routine. The nightly
-# nightly sweep: a failing race on development is known by morning without anyone
+# schedule runs on the repository's default branch, so it sweeps the released
-# remembering to dispatch it.
+# line; development carries its race gate on every push through `just gates`
+# and the hand dispatch when a change asks for one.
 #
 # Every step is one command, so the step that fails is the gate that failed.
 name: Race

.gitea/workflows/test.yml

@@ -1,8 +1,9 @@
 # Test, Go. Push and pull request to development. Never on main.
 #
 # The gates are the ones the justfile's `gates` recipe runs, minus race: the shared
-# runner box cannot afford the race detector on every push, so race runs once inside
+# runner box cannot afford the race detector on every push. Race has its own
-# the release pipeline instead. The box is one core and 2 GB beside Gitea, so
+# pipeline, dispatched by hand and swept nightly, and the local `just gates`
+# runs it once per task. The box is one core and 2 GB beside Gitea, so
 # parallelism is bounded on purpose and everything runs in one job. Extra jobs would
 # duplicate the checkout, the Go setup and the dependency download three times without
 # buying any parallelism.