From 065cf1df1e0910472ed6958c597888b867fe7434 Mon Sep 17 00:00:00 2001
From: Brummel <mould@mycelium.de>
Date: Thu, 11 Jun 2026 18:33:16 +0200
Subject: [PATCH] =?UTF-8?q?audit:=20cycle=200032=20(#59)=20=E2=80=94=20dri?=
 =?UTF-8?q?ft-clean;=20param=5Fspace()=20injectivity=20is=20a=20compile=20?=
 =?UTF-8?q?invariant?=
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Architect drift review over 11dfff8..HEAD: clean, no drift, no debt.

- C9/C12/C19/C23 ledger prose matches the landed code exactly. The C9
  refinement names the retired fan-in machinery (signature_of, leaf_has_param,
  check_fan_in_distinguishability, check_composite_fan_in) as retired, names the
  two intentionally-dropped render-identity cases (asymmetric param/paramless,
  role-vs-leg) as deliberate drops, and points at DuplicateParamPath/.named().
- C23 honoured: the check reads only the param_space() boundary name projection;
  the compilat stays index-wired, no name became load-bearing.
- C1 preserved: param_space() stays infallible; the gate is pure pre-build
  structural validation; injective blueprints compile bit-identically.
- Drift hazards all clear: no live reference to the retired machinery (only
  frozen historical specs/plans/fieldtests + the cycle's own test-doc comments);
  the stale "CLI render" signature_of doc line was removed with the function;
  both resolve/resolve_axes callers check injectivity before resolving so the
  unreachable! arms are genuinely dead; no live contract references the removed
  IndistinguishableFanIn / AmbiguousKnob variants; engine core untouched.

Regression: none configured (profile regression: []) — architect is the gate.
Resolution: carry-on (drift-clean). Gates re-run by the orchestrator: cargo
build/test --workspace green (0 failed), clippy --all-targets -D warnings clean.

Drift-clean is not a milestone close (the milestone fieldtest gate is separate).