Discharges the open item T07 raised. Values unchanged at 250,000 and
350,000; what was missing was a reviewed decision behind them, since
they had been set by the implementer in the commit that measured them
and that also changed the feature gating being measured.
The ADR supplies the argument T07's test requires -- why the targets
bind on FUTURE work rather than merely passing present work:
AM-4a leaves 3,750 lines of headroom (1.5%), about one small crate,
so any new shipped-runtime dependency breaches it almost immediately.
That is intended: the shipped runtime should be effectively frozen.
AM-4b leaves 32,979 lines (10.4%), deliberately looser -- dev tooling
should absorb one moderate dependency without a spec change, not two.
Both are ceilings on a quantity that only grows by choice. Nothing
drifts across them; only adding a dependency does.
Falsification condition stated: if a later pass raises AM-4a to
accommodate a dependency it wants, that is the failure the ceiling
exists to catch, and the answer is an ADR arguing for the dependency.
First ADR written under the correction/retarget test; sets the shape.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Instrument: session transcript JSONL, deduped by requestId, priced per
model and per cache TTL. Hub rejected as a source (no cache fields, ~100%
error on the same work), kept as sink. Status bar and billing API
rejected on availability.
Attribution: (prev_commit, this_commit] ending-at-commit, scoped by
sessionId. Explicit session markers rejected because they depend on an
agent remembering a step — the exact failure this workplan exists to fix.
Hub status transitions rejected as an after-the-fact time index.
Stated honestly: we buy accuracy with specification complexity, and D1
gets worse. That trade is only right because the alternative on offer was
not a simpler correct number but one wrong by two orders of magnitude.
Seven failure modes recorded up front, each becoming a T04 test — most
importantly that dedup fails in the under-reporting direction, so the
invariant is asserted at runtime rather than trusted.
Gate satisfied: T04 may now write collector code.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
