Mega Gate — S7 Evidence Writer Readiness
Mega Gate — S7 Evidence Writer Readiness
Date: 2026-06-18 · Workstream: LEGO-PILOT-SLICE-0-B2-MEGA-GATE-BUNDLE-2026-06-18 (Deliverable 16 of 20) · Editorial revision: rev1
Class: design-only / evidence-writer readiness / IO-contract boundary · READ-ONLY · NON-ENACTING · NON-AUTHORIZING · NOT remediation · NOT technical design · NOT implementation · NO blocker resolved · NO runtime touched.
Metadata convention. Editorial revision (rev1) only. AgentData storage revision and
content_lengthare authoritative in AgentData metadata at read time; not pinned in this body.
S7-readiness lock. This packet states what B2 must append to S7 and what the S7 writers must satisfy — as a contract + build-readiness, not a writer built. It builds no writer, writes no schema/function/SQL, and keeps S7 records-never-decides. S7 is a shared surface referenced here, not redesigned.
0. Status and non-authorization
STATUS: PASS — engineering / design-only. This is a complete design-only S7 evidence-writer readiness packet: the S7 evidence contract B2 must honor (records-not-decides), the writer build-readiness criteria, the hard constraints (no decision, no state mutation under guise of logging), the channel-id-for-auditability requirement, and the Owner-gated future work.
Engineering PASS ≠ authority PASS. A PASS means the S7 readiness is fully specified on paper. It is not an Owner authorization to build the writers or append any evidence. Default disposition: HOLD.
Pipeline position (downstream-only). Deliverable 16 of the Mega Gate Bundle; it deepens GATE-7 (the S7 contract + writers) and the B2 TD-prep §9 / interface S7 into a writer build-readiness. It builds no writer.
Non-authorization (explicit). As Deliverable 1 §0, and specifically: it builds no S7 writer; writes no schema/function/SQL; appends no evidence; makes no S7 record act as a decision. v0.1/FIX7 V3 not overwritten; v0.2 not authority.
Evidence basis — INHERITED_EVIDENCE. No runtime queried; kg_quality_log=0; S7 build-state PARTIAL (writers not built). AgentData metadata authoritative at read time. CAV-3/CAV-4/CAV-5 carried.
Reading discipline (Codex caveat, honored). All sources read directly from AgentData KB, bounded/sequential, by the main process — no parallel/background reader-agents, no sub-agents, no local-prose inference. /tmp = decode-scratch only, never SSOT.
1. Purpose
State the S7 evidence-writer prerequisites for B2 (GATE-7). The packet answers:
- What must B2 append to S7? — §5 evidence contract.
- What must the S7 writers satisfy (records-not-decides)? — §5 constraints.
- What is the writer build-readiness? — §5 readiness.
- Why is the channel id in S7 load-bearing? — §5.
The one rule, above all detail. S7 records; it does not decide. B2 appends append-only run-evidence (counts/ids/timestamps/channel-id/rule-set-hash + per-failure audit); a B2 evidence append must never act as an approval/certify/gate-pass, and B2 must never read S7 to decide. This packet states the contract + readiness; it builds no writer.
2. Sources read
All 25 required sources read first-hand from AgentData KB, by the main process, sequentially; none SOURCE_NOT_READ (full list in Deliverable 20 §2). Used principally: the B2 TD-prep §9 (the S7 evidence contract; records-not-decides); the interface packet S7 (append-only; K6 dedicated; kg_quality_log=0; the only edge+provenance function fn_iu_kg_edge_audit is audit/read); the channel decision §12 (channel id in S7 for swap auditability); Điều 32 (approvals only in S1); operating-rules (AP-CLOSE).
3. Accepted baseline (carried, not re-derived)
- S7 — Evidence / Audit Log [PARTIAL]: the append-only evidence trail every block emits into (birth side: the inspect-failure audit queue,
governance_audit_log,event_outbox). It records; it does not decide or act.kg_quality_log=0; the only function touching edges + provenance (fn_iu_kg_edge_audit) is audit/read, not a writer. The S7 writers are future-gated to build. - B2's S7 contract (carried, B2 TD-prep §9): per-run counts (scanned / passed-PEN/STAMP/GATE / failed-per-stage / skipped); run identity (producer/runner id, channel id, rule-set version/hash, start/end); per-failure audit records (entity, stage, failed check) appended to the audit queue; paths/hashes (AP-CLOSE).
- Hard constraints (carried): S7 records, does not decide; B2 must not read S7 to decide; no "logging" write may mutate entity state.
- Blockers — all OPEN. Tool/packet lock carried.
4. Analysis — contract ready, writers not
The S7 contract is ready (the shape of what B2 appends is fixed and records-not-decides); the S7 writers (the inspect-failure audit-queue emitter, the quality-log emitter) are not built (kg_quality_log=0; S7 PARTIAL). So GATE-7 is Partial: the contract half is read-only-confirmable; the writers are a future build. The load-bearing risk in evidence design is category violation — an evidence append that also mutates entity state ("logging" that flips certified/inspect_*), or an evidence record that is read back as an approval. The readiness criteria below guard exactly that: append-only, no-op-on-read, no decision input. The channel id in S7 is what makes a later channel swap auditable (links to R2-D2). This packet states the contract + writer readiness; it builds no writer.
5. S7 evidence-writer readiness
5.1 The S7 evidence contract B2 must honor (carried)
| Field group | What B2 appends | Records-not-decides |
|---|---|---|
| Per-run counts | rows scanned; passed at PEN/STAMP/GATE; failed per stage; skipped (already certified / out of scope) | observability only |
| Run identity | producer/runner id, channel id, rule-set version/hash, run start/end timestamps | the channel id makes a later channel swap auditable |
| Per-failure audit | for each failed row/stage — entity_code, stage, failed check — appended to the audit queue (entity_audit_queue / governance_audit_log / event_outbox) |
Đ0-G "Fail → INSERT audit queue" |
| Reproducibility | paths / hashes sufficient to repeat (AP-CLOSE) | observability only |
5.2 Writer build-readiness criteria
| # | Readiness criterion | What it requires | State today |
|---|---|---|---|
| S7R-1 | The S7 contract is fixed and records-not-decides | the §5.1 shape; no field acts as a decision | Ready (carried) — contract fixed |
| S7R-2 | The writers are scoped to build | the inspect-failure audit-queue emitter + quality-log emitter are a future build (not done here) | Not built — kg_quality_log=0; S7 PARTIAL |
| S7R-3 | Append-only, no-op-on-read | a missing evidence append degrades observability, never safety; no writer mutates entity state | Ready (criterion stated) |
| S7R-4 | Channel id present | so a later channel swap is auditable (links R2-D2) | Ready (criterion stated) |
| S7R-5 | No decision input | B2 must not read S7 to decide; S7 never acts as approval/certify/gate-pass (approvals only in S1/Điều 32) | Ready (criterion stated) |
| S7R-6 | Distinct staging vs production evidence | staging evidence tagged STAGING; never read into a production decision (Deliverable 12) | Ready (carried) |
5.3 Hard constraints (fail-closed)
- S7 records; it does not decide — a B2 evidence append must never act as an approval, certify signal, or gate-pass (B2-AC-8).
- B2 must not read S7 to make a decision — S7 is downstream of B2, never an input that authorizes B2.
- No "logging" write may mutate entity state — an evidence append that also changes
certified/inspect_*/canonical under the guise of logging is a category violation and must be rejected (the "log that mutates state" smell).
Verdict (GATE-7): the S7 contract is READY (carried); the S7 writers are a future-gated build (S7R-2). A read-only re-confirm of S7R-1/S7R-3/S7R-5 (the contract/append-only/no-decision halves) is part of Macro-1; the writers are built only behind a separate Điều 32 gate. No writer is built here; no evidence is appended.
6. Owner-gated future work
| Future work | Gate required | Forbidden now? |
|---|---|---|
| Build the S7 evidence/audit writers (inspect-failure queue, quality log) | Điều 32 | Yes |
| Append B2 run-evidence to S7 | Điều 32 (within a built, governed producer) | Yes |
| Confirm the S7 contract / append-only / no-decision read-only | Owner authorizes a read-only pass (Macro-1) | Yes |
| Build the staging evidence sink (tagged STAGING) | Điều 32 (part of staging TD) | Yes |
7. What remains unresolved
- GATE-7 Partial — the S7 contract is ready; the writers are not built (
kg_quality_log=0). - Channel id is load-bearing — required so a later channel swap is auditable (R2-D2 link).
- Records-not-decides is the category invariant — no evidence append may mutate state or act as approval.
- Staging evidence must stay distinct from production S7 (Deliverable 12).
- Blockers — all OPEN, none resolved: CONS-002, CONS-003, CELL-003/004/007, HOLD-1, HOLD-2, RISK-BYPASS, GOV-016/017, GOV-REUSE-001, Điều 39 runtime-EMPTY, Điều 35 production-readiness FAIL.
- FUTURE_TECHNICAL_DESIGN_REQUIRED (NOT written here): the writer implementations, the audit-queue/quality-log schema, any SQL/function body.
8. Ready for GPT/Codex review
Yes — as a design-only S7 writer readiness packet, not a writer.
Core rule, kept above all detail: S7 records, never decides; B2 appends append-only run-evidence (counts/ids/timestamps/channel-id/rule-set-hash + per-failure audit); the contract is ready, the writers are a future-gated build; no evidence append may mutate state or act as approval. No writer is built; no evidence is appended.
Default disposition: HOLD. Engineering PASS = a complete S7 readiness on paper; it is not an Owner authorization to build writers or append evidence. No PASS authorizes writes. All blockers remain OPEN.