R2-B Block Contract Packet — Execution Report (LEGO Design-Only, 2026-06-18)
R2-B Block Contract Packet — Execution Report
Date: 2026-06-18 · Workstream: R1-K-R2-B-BLOCK-CONTRACT-PACKETS-LEGO-2026-06-18 (R2-B execution report) · Editorial revision: rev1
Class: execution report / design-only / non-authorizing · READ-ONLY · NON-ENACTING · NO blocker resolved.
Metadata convention. This report pins no volatile AgentData storage revision/content_length in its body. Editorial revision (rev1) only. AgentData storage revision and content_length are authoritative in AgentData metadata at read time for every file referenced here.
0. Status
STATUS: PASS (engineering / design-only). The R2-B Block Contract Packet was authored as a complete design-only block-contract set for the birth / inspect / certify / stamp lane (B1–B7), with full per-block contracts, isolation/replaceability/rollback, a bad-input/invalid-state fail-closed rejection matrix, and a design-only Codex-style adversarial reconstruction. Nothing was built, mutated, executed, or authorized.
Engineering PASS ≠ authority PASS. This PASS certifies the B-block contracts are complete and fail-closed on paper; it is not an Owner authorization to design-in-detail or to remediate. Default disposition: HOLD. Every blocker remains OPEN.
1. Files created
Exactly two files for the R2-B half (the R1-K half is reported in its own execution report; four files total across both, no fifth combined packet).
| File | Editorial revision | AgentData metadata convention | Status |
|---|---|---|---|
consolidation/r2-b-block-contract-packet-lego-2026-06-18.md |
rev1 | revision & content_length authoritative in AgentData metadata at read time | created |
reports/r2-b-block-contract-packet-lego-execution-report-2026-06-18.md (this file) |
rev1 | revision & content_length authoritative in AgentData metadata at read time | created |
No existing source / law / draft / note / prior report was modified. The CAV-6 metadata typo in the prior combined R1a/R2a execution report was not patched (patching a prior report is forbidden).
2. Sources read
All required sources for the R2-B lane were read first-hand via read-only AgentData batch_read (full content), decoded and read in full. None SOURCE_NOT_READ. Clusters: LEGO scoping (3), Owner decision chain (3), R1a/R2a accepted root-cause baseline (4), earlier R1/R2 + Phase-1B (4), governance anchors (8) — 22 sources, all READ. The R2-B packet §2 lists the subset materially used for the B-lane (birth root cause, Điều 0-G / Điều 4 / Điều 32 / Điều 35 anchors, operating rules). Evidence is INHERITED from prior accepted read-only runs; no runtime was queried this run.
3. Caveats carried
All six Codex caveats carried verbatim in substance (packet §4). B-lane bindings: CAV-3 → B2/B5 (manual bootstrap supported by dot_origin + synced script, not unavailable container logs); CAV-4 → B2/B5 (synced-mirror evidence, no byte-for-byte live-file claim); CAV-5 → B7 (no persisted bypass; transient session unreadable); CAV-6 → documentary only, not patched. CAV-1/CAV-2 (R1-lane) carried for completeness; they do not bind the B-blocks. No caveat resolved.
4. Block contract completion
All seven B-blocks (B1–B7) carry the full thirteen-field contract, split across packet §7 (eleven fields) and §9 (the remaining two: bad input / invalid state, expected rejection behavior), with the safe failure mode in §8.
| Block | Contract complete? | Isolation / replaceable / rollback? | Safe failure mode |
|---|---|---|---|
| B1 — Birth registration | Yes (13/13) | Yes (one INSERT-trigger set) | certification remains false |
| B2 — Inspect producer | Yes (13/13) | Yes (swap channel, keep contract) | no-op (no stamps written) |
| B3 — Inspect result (contract surface) | Yes (13/13) | Yes (versioned contract) | interface — stays stable |
| B4 — Certify consumer | Yes (13/13) | Yes (one AFTER-UPDATE trigger) | certification remains false |
| B5 — Backlog handling | Yes (13/13) | Yes (one bounded one-shot, deletable) | pending-Owner / no-op |
| B6 — Stamp mapping | Yes (13/13) | Yes (re-map onto existing fields) | pending-Owner (concept) |
| B7 — GUC / gate policy | Yes (13/13) | Yes (reversible config flip) | warn-mode (stays warn until B2) |
No B-block was NOT_LEGO_COMPATIBLE; the soft boundaries (B6 vs external S4, B1 vs external S3) were resolved by keeping the blocks separate, not merging.
5. Bad-input / invalid-state rejection completion
Defined for all seven B-blocks (packet §9) as a conceptual contract check — not run against runtime. Each block's expected fail-closed rejection is specified. Where a MISSING block's built behavior cannot be runtime-verified (B2/B5), the row is bounded as BAD_INPUT_BEHAVIOR_UNCLEAR and the expected rejection contract is defined conceptually (no tested runtime result claimed; INHERITED_EVIDENCE).
| Block | Bad-input rejection defined? | Fail-closed verdict |
|---|---|---|
| B1 | Yes | INSERT without governance role / invalid identity ⇒ certified=false only, no inspect stamps |
| B2 | Yes | uncertified row missing identity fields ⇒ reject / mark failed, never fake stamps, never certify |
| B3 | Yes | partial inspect result ⇒ incomplete signal, B4 must not certify |
| B4 | Yes | inspect_* incomplete ⇒ certified remains false |
| B5 | Yes | batch lacks Owner approval / scope bound ⇒ no-op, no backlog write |
| B6 | Yes | request for net-new stamp columns ⇒ reject as parallel SSOT |
| B7 | Yes | flip warn→block without standing producer ⇒ reject, remain warning |
The one structural fail-open in the substrate (app.birth_gate_mode='warning' letting uninspected births pass the gate) is a carried known risk, compensated by B4 never certifying without all three genuine stamps and B1 minting only certified=false; B7's contract holds warn-mode and rejects a premature flip. No B-block introduces a path that certifies on invalid input. The 2026-03-21 fused stamp-in-INSERT is named the fail-open anti-pattern to never repeat (AC-1/AC-2).
6. Non-authorization check
| Control | Result |
|---|---|
| DB write / DDL / DML | none |
| restart / reload container or service | none |
| runner / job / cron execution | none |
| DOT / KG / birth / certify / promote execution | none |
| backfill / quarantine | none (R2-B does not touch KG edges) |
| inspect / certified writes | none (no inspect_pen/stamp/gate, no certified=true) |
gate flip (birth_gate_mode→block) / owner assignment / contract promotion |
none |
| source / law / draft / note / prior-report patch | none |
| current corpus created | none |
| technical design written | none |
| implementation | none |
| blocker resolved | none |
| authority order / v0.1 baseline / v0.2-hardening change | none |
Engineering/Codex PASS ≠ Owner authorization. No PASS here authorizes any write. Out-of-band, Owner-controlled items (confirm transient app.birth_gate_mode/app.bypass_birth_gate per CAV-5; recover Điều 0-G source) are not performed here and are not runtime writes.
7. Design-only altitude check
The packet stays at design-direction altitude: it defines block contracts and boundaries, not mechanics. No schema DDL, table definition, migration plan, function body, SQL mutate plan, cron implementation plan, worker build plan, concrete rollback script, exact remediation commands, producer implementation, or provenance/backfill mechanics appears. The producer channel (host cron / pg_cron / agent-api executor / job_queue worker — R2-D2) is left inside B2 as a replaceable internal and explicitly moved to FUTURE_TECHNICAL_DESIGN_REQUIRED (packet §13/§14), unwritten. The backlog-pass mechanics and stamp-materialization mechanics are likewise deferred and unwritten.
8. Self-check
| Check | Result |
|---|---|
| SC1 — all required sources read | PASS (22/22 READ; none SOURCE_NOT_READ) |
| SC2 — all 6 caveats carried | PASS (packet §4) |
| SC3 — exactly two files for this half (four total) | PASS |
| SC4 — no combined fifth packet | PASS |
| SC5 — (R1-K's K1–K7) | N/A here — see R1-K execution report |
| SC6 — B1–B7 present | PASS |
| SC7 — every block has responsibility/input/output/evidence/gate/dependency/must-not-depend/replacement | PASS (§7A/§7B) |
| SC8 — every block has isolation/rollback/safe-failure | PASS (§8) |
| SC9 — bad-input / invalid-state rejection defined | PASS (§9) |
| SC10 — R2-B kept separate from R1-K | PASS (separation lock; §10/§12) |
| SC11 — no mega-registry / mega-graph / mega-birth-pipeline | PASS (AC-12; §11) |
| SC12 — no TD / implementation | PASS (§7 altitude check) |
| SC13 — all future writes Owner-gated and forbidden now | PASS (§13 all "Yes" forbidden) |
| SC14 — no existing source/law/prior-report modified | PASS |
| SC15 — all four files re-read after writing | PASS (re-read post-upload) |
| SC16 — all blockers OPEN | PASS (§14) |
| SC17 — engineering PASS distinguished from authority PASS | PASS (§0, throughout) |
No self-check failed. PASS is reported as an engineering/design-only PASS.
9. Ready for GPT/Codex review
Yes. The R2-B packet and this execution report are ready for GPT review, then Codex adversarial control review. Recommended next: GPT reviews all four files (R1-K packet + report, R2-B packet + report); if accepted, Codex reviews; then the Owner chooses whether to proceed to a narrower design-only TD-prep package for selected B-blocks. No automatic TD. No automatic write-enabled remediation. Default HOLD.