iteration 05 · promotion sweep

Parameterless promotion sweep: shared knob → project-wide constant

Second job of the parameterless probe: sweep all candidates' knobs (failed so far + future) to find shared knobs promotable to a project-wide constant — which then rescue every candidate using them. Automates the manual AXIS2-REMEDIATION analysis; re-runs on every candidate sweep. plan-agreement: PASS

The idea: when N candidates across families use the same knob at the same value, that value is a convention, not a magic number. Promote it once → every user clears Axis-2 for free. Each verdict carries provenance (members + families + values + sources).

The 3-gate promotion bar

gate	requirement
(a) genuine convention	identical across ≥4 members (n=2 too small; n=3 → review)
(b) value-neutral / structural	a structural integer — never a tuning float
(c) full infrastructure	named SSoT const + invariant + ban-guard (recommended; #513 pattern)

Result — 40 candidates swept

knob	verdict	members / families
`ordinal_embedding_m = 3`	REUSE (ORDINAL_M)	9 / 1
`ordinal_embedding_tau = 1`	REUSE (ORDINAL_TAU)	9 / 1
`mfdfa_detrend_order = 1`	PROMOTE-NEW	16 / 2
`takens_embedding_tau = 1`	PROMOTE-NEW	4 / 1
`takens_embedding_dim`	HARMONIZE (5/4/10 diverge)	4 / 1
`sampen_r`	KEEP-LOCAL (tuning float)	2
`scaling_fit_method`	KEEP-LOCAL (categorical)	4 / 2
`copula_k / te_history_kl`	NOT-SHAREABLE (2nd-series)	—

2 new constants recommended — MFDFA_DETREND_ORDER=1 (16 members) and TAKENS_EMBEDDING_TAU=1 (4 members) — plus REUSE of the ratified ORDINAL_M/ORDINAL_TAU (#513). A programmatic plan_agreement guard asserts the sweep matches the manual analysis.

Rescue — what this promotes

After the recommended constants land, 16 candidates go Axis-2-clean (every knob maps to a promoted/reused constant): 8 ordinal/CECP via REUSE + 8 single-knob MF-DFA via the new detrend constant. Each is reported with its orthogonality status — the operator's rule: Axis-2-clean + orthogonality PASS ⇒ PROMOTABLE NOW.

Append-only loop: test a candidate → add one line to candidate_knobs.jsonl → re-run --sweep. A knob stuck at n=2 flips to PROMOTE-NEW the moment a 4th member at the same value lands, and its rescue cohort updates. Sweep doc →

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