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FIX7 N-Node Numbering / Semantic Reconciliation (under TKT v0.2, 2026-06-11)

Host: T1. Authority: NON_AUTHORITY / engineering-convention PROPOSAL. Codex consulted: NO. Binding status: the canonical table below is PROPOSED, labels-only, NOT owner/Codex-ratified. It changes no edge, no math, no digest (confirmed: encoder sha unchanged 13344f92…). Ratification is required before it is binding (blocker G-DOC-1).

Grounded byte-for-fact in the governed model …/designs/fix7-n-node-authority-model-design-addendum-2026-06-11.json (rev1). No node meaning invented.

Canonical N-number → value table (PROPOSED engineering convention)

node	semantic name	value type	deps	aliases / deprecated labels	provenance class (real)	creator	consumers	load-bearing?	status
N1	normalized_active_content_sha256[d]	per-doc digest	—	(S3 mislabels membership as N1)	ENGINEERING_VERIFIED_CANDIDATE / OFFICIAL_PIN	T1/canonicalizer	N6, N7(via)	YES	engineering, rehearsal-classed in lane
N2	canonicalizer_sha256 (rev3)	digest	—	S2 "active_corpus_membership_sha256"; S1 unlabelled	ENG_CANDIDATE / OFFICIAL_PIN	T1/canonicalizer	N7, N8	YES	MC-1 locus
N3	marker_fence_registry_sha256	digest	—	—	ENG_CANDIDATE / OFFICIAL_PIN	T1	N7	YES	engineering
N4	superseded_boundary_sha256	digest	—	—	ENG_CANDIDATE / OFFICIAL_PIN	T1	N7	YES	engineering
N5	guard_set_sha256 (= N1[doc06])	digest	—	tag FIX7_GUARD_SET_V1 reserved (G-IMPL-1)	ENG_CANDIDATE / OFFICIAL_PIN	T1	N7, N8	YES	engineering
N6	active_corpus_sha256	corpus aggregate	N1	—	ENG_CANDIDATE / OFFICIAL_PIN	T1	N7, N8	YES	candidate d777e87c…; gated SEAL_REAL_N6_NOT_AVAILABLE
N7	envelope_manifest_sha256	manifest seal	N2,N3,N4,N5,N6,N1	—	(approval inputs AUTHORITY_INPUT)	Codex(real)/encoder(rehearsal)	N8, P7	YES	rehearsal-only; real gated
N8	detached_seal_sha256	seal	N2,N5,N6,N7	—	CODEX_AUTHORED	Codex	P7	YES	CODEX_ONLY
N9	codex_checkpoint_content_sha256_excluding_seal	diagnostic	—	S1 N9_DIAG (unnamed); S3 absent	n/a	system/Codex(diag)	(none)	NO	MC-2 locus, diagnostic sink
membership	active_corpus_membership_sha256	digest (frozen pin f2bda8ef…)	—	S2=N2, S3=N1, S1=unlabelled	ENG_CANDIDATE / OFFICIAL_PIN	T1	N7 leaf	YES	decision: name 'membership', STOP numbering N1/N2
P7	authority_seal_pin_sha256	official pin	N2,N7,N8	—	OFFICIAL_PIN	Codex	(final)	YES	authority-layer only; blocked

Edges acyclic (has_cycle=false); topological seal order N1→N2→N3→N4→N5→N6→N7→N8→P7. P7 is authority-layer-only (not in canonicalizer EDGES).

Contradiction resolution

• MC-1 (N1/N2 reassignment). Three surfaces disagree on what N1/N2 name and on whether membership is N1/N2/un-numbered. Resolution (PROPOSED): N2 := canonicalizer_sha256, N1 := normalized_active_content_sha256[d], and the membership digest is named membership and is NOT numbered. Severity: MATERIAL but non-exploitable — blocks_seal_math=false (edges/math/digests are consistent; only the human labels drift). The executable checker now rejects any swapped use outside an explicit alias context.
• MC-2 (N9 naming). N9 is codex_checkpoint_content_sha256_excluding_seal in S2, N9_DIAG/unnamed in S1, absent in S3 — but all three agree it is a diagnostic sink, not load-bearing, not carried into the authority DAG. Resolution: name it N9 (diagnostic), keep it out of the authority DAG. Checker rejects treating it as load-bearing or as an authority input.
• CC-1 (historical N7→N8 cycle) already RESOLVED (removed rev2; CYCLE_FORBIDDEN enforces; re-proven by encoder selftest "injected N7→N8 edge detected as cycle").
• G-IMPL-1 (N5 tag cosmetic) recorded, non-blocking.

What this resolves vs what it does not

• Resolved at engineering-convention level + enforced by checker: the drift is now non-exploitable — a future agent feeding a swapped/unknown/diagnostic-as-authority label is rejected (15/15 checker, see checker-probes report).
• NOT resolved (requires owner/Codex): the binding canonical numbering. Per the model, the correction "MUST be ratified by Codex/owner before binding." T1 cannot self-ratify beyond engineering convention ⇒ status NEEDS_OWNER_OR_CODEX_RATIFICATION (G-DOC-1/2/3).

Machine-readable form: fix7-n-node-numbering-reconciliation-under-tkt-v02-2026-06-11.json. Executable gate: …/fix7-authority-n-node-tkt-v02-alignment-2026-06-11/n_node_checker.py.