Coverage-Untergrenze 85 % in tools/.coveragerc, gegen beobachtete 87,0 % (4.7.2, schließt #10, eröffnet #51)

Files changed:
- .gitea/workflows/ci.yml
- CHANGES.md
- EVALS.md
- VERSION
- tools/.coveragerc

tools/.coveragerc

@@ -11,10 +11,27 @@
 # measure the stack's tests - so an addopts entry would break the plain
 # `pytest -q` that every local run and the CI "Tests" step use.
 #
-# No `fail_under` yet, on purpose: Gitea #10 sets the threshold in a separate,
-# later commit, once the measured number exists to justify it. A threshold
-# picked before the number is either too low to bite or too high to survive the
-# next honest commit - and the second kind gets lowered rather than earned.
+# `fail_under` lives here rather than as a `--cov-fail-under` flag in the CI
+# step, so the number sits next to the reasoning that produced it and applies to
+# any `--cov` run, not just the one CI happens to write.
+#
+# 85, against a measured 87.0% (CI run 163, 6498 statements, 975 tests). Gitea
+# #10 held this back until the number had been watched: the first measurement
+# was 86.9% of 5105 statements over 730 tests (CI run 87), and between the two
+# the measured code grew by a quarter and the suite by a third while the quota
+# moved a tenth of a point. That stability is what the threshold rests on.
+#
+# The two points of headroom are not slack. They are the room the report's own
+# taxonomy asks for: a new thin Typer wrapper lowers the total without anything
+# having got worse, because its logic is tested beside it (see EVALS.md § "How
+# much of the stack the suite reaches"). A threshold at the measured number
+# would go red on exactly that commit, and a threshold that goes red for a
+# non-reason gets lowered rather than earned - which is the failure mode #10
+# existed to avoid, arriving from the other side.
+#
+# What this number does *not* do is close the genuine gaps - provenance_cmd.py,
+# migrate_cmd.py, type_resolver.py. It freezes the state that was reached; the
+# gaps are their own work, tracked separately.
 [run]
 source = chemenu
 omit =
@@ -23,3 +40,4 @@ omit =
 [report]
 show_missing = True
 precision = 1
+fail_under = 85