IR schema now refuses non-finite numbers (allow_inf_nan=False on quantity/
unit_cost/claimed_saving_nok) and non-finite or negative assumption-band
endpoints; json.loads accepts the bare Infinity literal, so the bundle seam
is tested directly. ModelMapContract rejects empty-string model ids
(min_length=1). check_turn_safety_net documented as a deliberately
unreachable belt under the range-bound debate loop.
18 new tests; detach-proven (re-allow inf/nan -> 5 red, drop min_length ->
2 red). Full gate: 365 passed, ruff/format/mypy clean; golden untouched.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude Agent SDK verified against official docs + PyPI 2026-07-03 (0.2.110, CLI
bundled, offline import without API key). Contracts mirror method-spec §10/§4.1/§8:
data-source, model-map (per-profile default required), termination (positive caps),
binary feedback decision. TDD: tests written red-first; suite 14/14 green without
any API key; ruff + mypy --strict clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AaQCFnfsh3tfq1VfzdJpoi
