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fix(OMN-16071): the OCC companion writer is add-only by path, not by filename shape - #2200
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jonahgabriel merged 2 commits intoAug 29, 2026
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…filename shape Defect 1, the defect this ticket is titled after, is the last open half of OMN-16071 (Defect 2 landed in #2081/#2086). Its AC is literal: "the autobind path must be strictly add-only -- never open an existing receipt file for write." Every prior PR in this ticket's chain hardened the GUARD; none touched the WRITER, which is why the ticket carries a standing DO-NOT-FLIP. WHY THE EXISTING MECHANISM DID NOT CATCH IT. `assert_append_only_emissions` (OMN-15485) is the producer-side invariant meant to make the class unreachable from any emission site. It carried one exemption: if _SUPERSEDE_FILENAME_RE.search(filename): continue That asks "is this filename shaped like a correction?", never "is this path already merged?" -- and filename shape is not evidence of novelty. The merged path files every rebind at `<check_type>.supersede.<pr_number>.yaml`, keyed to the PRODUCT PR number, which is CONSTANT across every authoring pass for that same PR. So the 2nd, 3rd ... pass renders the identical paths and the guard waves each one through while they are already merged bytes on dev. It could not have known better. `ModelOccContractState` carried `existing_entry_ids` -- a set of DIRECTORIES -- and nothing about which FILES are merged, so the blanket exemption was the only way to let a legal first correction through. LIVE, from this ticket's own record: OCC#6616 (companion for omninode_infra#925) re-rendered eight `.supersede.925.yaml` files an earlier pass for that same PR#925 had merged, bumping `created_at` 07:19:22Z -> 17:14:25Z in place, alongside the base receipt. Reproductions #1-#4 in the ticket are the same shape through both producers. WHAT CHANGED * `ModelOccContractState.merged_receipt_paths` gives the pure planner file-level truth. Defaults to `()`, which reproduces the prior semantics byte-for-byte, so nothing in the merged corpus moves until the read-EFFECT populates it. * `assert_append_only_emissions` refuses any emission at a path in that set, BEFORE the directory rule and regardless of filename -- the same judgment `evaluate_append_only` makes off git status. The supersede exemption survives only for paths nothing has merged. * `_next_supersede_path` allocates a fresh generation keyed to the OCC companion PR authoring the rebind when the product-PR-keyed name is taken, and only for the keys that actually collide. The suffix stays a SINGLE integer because both this producer's `_SUPERSEDE_FILENAME_RE` and omnibase_core's `_SUPERSEDE_SUFFIX_RE` parse `.supersede.<NNNN>.yaml` strictly -- a compound `.supersede.925.6616.yaml` would be filed where nothing resolves it. The record's `replacement.pr_number` still names the PRODUCT PR, which is what `resolve_supersession`'s tier-1 selection keys on; the generation is provenance, never the binding. With no OCC PR number yet (pass 1) the emission is OMITTED and logged, not written -- the merged record already binds this same product PR with the same commit_sha / branch / probe, so suppressing the re-mint loses no evidence while opening it for write is the defect. * Born path (`OccCompanionEmitter`): the slot receipt's skip was keyed to `contract_path.is_file()` -- a question about `contracts/<ticket>.yaml` used to decide whether to open a receipt under `drift/dod_receipts/`. Two different files; its siblings in the same loop already ask the direct question. It now also reads the receipt path itself. The contract half is RETAINED deliberately: minting a slot receipt into a pre-existing contract that does not declare that item would trade an append-only violation for an orphan receipt. * The read-EFFECT lists the merged receipt files, scoped to `existing_entry_ids` (1-10 dirs in practice, not the ticket's whole tree). FAILS SOFT to `()`: a listing hiccup degrades to the shipped semantics rather than refusing a mint, and the write-EFFECT's pre-push `_assert_append_only` plus the hosted gate remain fail-closed behind it. PROOF. Two new gates, 13 cases, RED-proven against dev tip b7eef36. The control is stated precisely because a sloppier one would prove nothing: `merged_receipt_paths` is a NEW member of a `extra="forbid"` model, so all 10 compute legs against a plain `git checkout origin/dev -- src/` fail on `extra_forbidden` -- a schema error, which says nothing about the guard. Isolating control, measured: dev `src/` with ONLY `events/occ_companion.py` restored from this commit (the field, none of the logic) -> **6 failed / 4 passed**. The 6 fail behaviourally on the shipped producer: it re-emits the already-merged paths. The 4 controls stay green under that same control (empty `merged_receipt_paths` is a no-op, a first supersede is still legal, a plain receipt in a frozen dir is still refused), so the fix is not passing by refusing everything. The born-path leg needs no such isolation -- it drives `_emit_companion_sync` directly. Against a plain dev `src/`: **1 failed / 2 passed**, the failure being the writer rewriting a merged receipt's bytes, and the 2 passes being controls that hold both directions (contract + receipt present still skips per OMN-15785; a fresh ticket still mints, so the fix cannot pass by never writing and trading the violation for a MISSING_RECEIPT companion). The consumer leg writes both passes' real output to one tree and asks omnibase_core's `resolve_supersession` the question occ-preflight asks. All 24 cases in the three touched gate files pass on this commit. `test_occ_append_only_producer_omn_15485.py`'s falsifier docstring claimed "filename shape is what decides" for the whole invariant; it only ever exercised the directory rule. Corrected in place rather than left to be read at face value -- that reading is how the exemption went unexamined. Re-measured after the rebase onto b7eef36, not carried over: 746 passed / 30 skipped across node_occ_companion_compute + node_pr_lifecycle_fix_effect + node_occ_companion_effect + node_occ_state_effect with OCC_REPO_DIR set. 6178 passed / 38 skipped / 1 xfailed on the full unit suite. mypy --strict clean across 3077 source files, ruff clean, pre-commit run --all-files clean. KNOWN INERTNESS, stated rather than implied: node_occ_companion_compute and the born-path emitter run in the .201 dev-lane effects runtime, not product-repo CI. This code takes live effect at the next dev-lane refresh, so the live-corpus proof for this fix is ARMED, not yet observed. Closes OMN-16116 as a duplicate of this defect.
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| Rule | Description |
|---|---|
| ARCH-TOPIC-001 | No hardcoded Kafka topic strings in handler code |
| ARCH-DI-001 | No event_bus=None bypass |
| ARCH-DI-002 | No direct Handler instantiation outside workflow_runner/adapters |
| ARCH-DI-003 | No reinvented DI containers |
| ARCH-TOPIC-002 | contract.yaml topics follow `onex.{cmd |
ARCH-DI-002: Direct Handler instantiation (warning)\n\n```\nsrc/omnimarket/nodes/node_delegate_skill_orchestrator/ports/port_local_delegation_dispatch.py:418: self._effect_handler = effect_handler or HandlerLlmDelegationCall()
src/omnimarket/nodes/node_delegate_skill_orchestrator/ports/port_local_delegation_dispatch.py:419: self._projection_handler = projection_handler or HandlerProjectionDelegation()
src/omnimarket/nodes/node_delegate_skill_orchestrator/ports/port_local_delegation_dispatch.py:439: self._judge = judge if judge is not None else HandlerJudgeAdequacy()\n```\n\nHandler classes should be wired only in workflow_runner.py or adapter modules. Direct instantiation elsewhere bypasses the contract system.\n\n
Static architectural lint — no model inference (OMN-14176).
📝 WalkthroughWalkthroughThe change adds merged receipt paths to OCC state, blocks writes to existing receipt paths, allocates new supersession filenames for collisions, and preserves existing slot receipts during companion emission. Regression tests cover collision handling, append-only validation, and fresh-ticket creation. ChangesReceipt preservation and supersession handling
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The writer now avoids reopening merged receipt files, but one bounded observability issue remains: a skip message can incorrectly blame a missing OCC PR number when no new generation is available because both candidate files are already merged. This is mergeable with owner awareness and a follow-up log correction. Sequence Diagram(s)sequenceDiagram
participant OCCGovernanceBranch
participant handler_occ_state_effect
participant ModelOccContractState
participant handler_occ_companion_compute
participant occ_companion_emitter
handler_occ_state_effect->>OCCGovernanceBranch: list YAML receipt paths
OCCGovernanceBranch-->>handler_occ_state_effect: merged receipt paths
handler_occ_state_effect->>ModelOccContractState: store merged_receipt_paths
ModelOccContractState->>handler_occ_companion_compute: provide OCC contract state
handler_occ_companion_compute->>handler_occ_companion_compute: allocate supersession path
handler_occ_companion_compute->>occ_companion_emitter: emit planned companion paths
occ_companion_emitter->>occ_companion_emitter: skip existing slot receipts
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
Comment |
✅ Hostile Reviewer — PASSEDBlocking findings (critical/error): 0 Gate semantics
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Inline comments:
In
`@src/omnimarket/nodes/node_occ_companion_compute/handlers/handler_occ_companion_compute.py`:
- Around line 1682-1690: Update the skip logging around _next_supersede_path to
distinguish whether the natural product-PR path is taken with no occ_pr_number
or both product-PR-keyed and OCC-PR-keyed generations are already merged. Only
mention a future pass filing a generation for the first case; log an accurate
already-merged outcome for the second.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
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Run ID: 975f5a3e-6116-49a3-a04c-5e1a7067c97b
📒 Files selected for processing (7)
src/omnimarket/events/occ_companion.pysrc/omnimarket/nodes/node_occ_companion_compute/handlers/handler_occ_companion_compute.pysrc/omnimarket/nodes/node_occ_state_effect/handlers/handler_occ_state_effect.pysrc/omnimarket/nodes/node_pr_lifecycle_fix_effect/handlers/occ_companion_emitter.pytests/unit/nodes/node_occ_companion_compute/test_occ_append_only_producer_omn_15485.pytests/unit/nodes/node_occ_companion_compute/test_occ_supersede_generation_omn_16071.pytests/unit/nodes/node_pr_lifecycle_fix_effect/test_born_path_add_only_writer_omn_16071.py
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jonahgabriel
enabled auto-merge (squash)
August 29, 2026 07:11
…fired CodeRabbit, correctly, on omnimarket#2200: `_next_supersede_path` returns `None` for two distinct reasons and the log asserted the first one unconditionally. * Pass 1 has no `occ_pr_number` to key a fresh generation with, and pass 2 of the same mint WILL file it. * A key whose product-PR-keyed AND OCC-PR-keyed generations are both already merged has nothing left to add, and no later pass will ever emit it. The operator responses differ. Claiming "no OCC PR number is available yet" in the second case sends a reader hunting for a number that is set, and promises a pass that will never come. RED-proven, not assumed: the new case fails against the shipped log text, and its captured output is the false claim itself -- skipping supersession for OMN-15922/dod-deploy-assessment - its product-PR-keyed path is already merged and no OCC PR number is available yet ... (emitted with occ_pr_number=6616 SET) Both directions are pinned: the exhausted-generations branch must say "ALREADY merged" / "no later pass will emit it" and must NOT say "no OCC PR number is available yet"; the pass-1 branch must say the inverse. A one-directional assertion would pass on a log that always said both. 747 passed / 30 skipped across the four affected node suites. ruff, mypy --strict (3077 files) clean.
jonahgabriel
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to OmniNode-ai/onex_change_control
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Aug 29, 2026
…imarket#2200 (#7526) * evidence(OMN-16071): author OCC companion for OmniNode-ai/omnimarket#2200 OCC companion by node_pr_lifecycle_fix_effect (OMN-13317 F1 / OMN-13990 / OMN-14285). Product PR head 0dbaa9e0d96117a9b6822fb28163a7d138316da2. * evidence(OMN-16071): self-bind OCC#7526 + rebind contract_sha256 --------- Co-authored-by: omnimarket-bot <bot@omninode.ai>
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No OCC evidence companion was minted for this PR. this PR is already bound to OCC#7526; its evidence companion exists and nothing needs authoring To clear this: Nothing to do — the companion already exists. Reported by |
jonahgabriel
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jonah/omn-16071-born-path-add-only-receipt-writer
branch
August 29, 2026 08:14
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Evidence-Source: OCC#7526
Evidence-Ticket: OMN-16071
Closes the last open half of OMN-16071 — Defect 1, the defect the ticket is titled after. Also closes the duplicate ticket covering the same writer defect; that ticket is not a separate evidence scope for this PR.
The defect
The OCC companion writer opens an already-merged receipt file for write instead of adding a new one. Merged receipts are immutable under the OCC Append-Only Gate; corrections must be net-new add-only files.
Four live reproductions are recorded on OMN-16071 (OMN-16029, OMN-16296, OCC#6616, and the 2026-08-21 OMN-16368 instance). Every one of them was repaired by hand.
Root cause of the gate escape — why
assert_append_only_emissionsdid not stop thisassert_append_only_emissions(OMN-15485) is the producer-side invariant meant to make this class unreachable from any emission site. It carried one exemption:That asks "is this filename shaped like a correction?" — never "is this path already merged?" Filename shape is not evidence of novelty. The merged path files every rebind at
<check_type>.supersede.<pr_number>.yaml, keyed to the product PR number, which is constant across every authoring pass for that same PR. So pass 2, 3, … render the identical paths and the guard waved each one through while they were already merged bytes ondev.It could not have known better:
ModelOccContractStatecarriedexisting_entry_ids— a set of directories — and nothing about which files are merged, so a blanket exemption was the only way to let a legal first correction through.This is also why PR #2086's guard hardening did not close it. #2086 hardened the gate (reject in-place writes by git status); the writer still opened merged receipts for write and was merely rejected reliably rather than made correct. Hence the ticket's standing DO-NOT-FLIP.
What changed
ModelOccContractState.merged_receipt_pathsgives the pure planner file-level truth. Defaults to(), which reproduces prior semantics byte-for-byte.assert_append_only_emissionsrefuses any emission at a path in that set, before the directory rule and regardless of filename — the same judgmentevaluate_append_onlymakes off git status. The supersede exemption survives only for paths nothing has merged._next_supersede_pathallocates a fresh generation keyed to the OCC companion PR authoring the rebind when the product-PR-keyed name is taken, and only for keys that actually collide. The suffix stays a single integer because both this producer's_SUPERSEDE_FILENAME_REand omnibase_core's_SUPERSEDE_SUFFIX_REparse.supersede.<NNNN>.yamlstrictly — a compound.supersede.925.6616.yamlwould be filed where nothing resolves it.replacement.pr_numberstill names the product PR, which is whatresolve_supersession's tier-1 selection keys on; the generation is provenance, never the binding. With no OCC PR number yet (pass 1) the emission is omitted and logged, not written — the merged record already binds the same product PR with the same commit_sha/branch/probe.OccCompanionEmitter): the slot receipt's skip was keyed tocontract_path.is_file()— a question aboutcontracts/<ticket>.yamlused to decide whether to open a receipt underdrift/dod_receipts/. Two different files; its siblings in the same loop already ask the direct question. It now also reads the receipt path itself. The contract half is retained deliberately — minting a slot receipt into a contract that does not declare that item would trade an append-only violation for an orphan receipt.existing_entry_ids(1–10 dirs in practice). Fails soft to(): a listing hiccup degrades to shipped semantics rather than refusing a mint; the write-EFFECT's pre-push_assert_append_onlyand the hosted gate stay fail-closed behind it.Proof — with the control stated
merged_receipt_pathsis a new member of anextra="forbid"model, so all 10 compute legs against a plaingit checkout origin/dev -- src/fail onextra_forbidden— a schema error that says nothing about the guard. The isolating control is devsrc/with onlyevents/occ_companion.pyrestored from this commit (the field, none of the logic):src/+ field only, compute gatesrc/, born-path gateThe consumer leg writes both passes' real output to one tree and asks omnibase_core's
resolve_supersessionthe question occ-preflight asks.test_occ_append_only_producer_omn_15485.py's falsifier docstring claimed "filename shape is what decides" for the whole invariant; it only ever exercised the directory rule. Corrected in place — that reading is how the exemption went unexamined.Local gates
Re-measured after rebase onto
b7eef36e, not carried over: 746 passed / 30 skipped acrossnode_occ_companion_compute+node_pr_lifecycle_fix_effect+node_occ_companion_effect+node_occ_state_effect; 6178 passed / 38 skipped / 1 xfailed on the full unit suite;mypy --strictclean across 3077 source files;ruffclean;pre-commit run --all-filesexit 0.KNOWN INERTNESS — stated, not implied
node_occ_companion_computeand the born-path emitter run in the .201 dev-lane effects runtime, not product-repo CI. Merging this does not change live behaviour until the next dev-lane refresh. The live-corpus proof for this fix is ARMED, not yet observed — do not read a green CI here as live-corpus evidence.Does not regress OMN-16859 (#2195, receipts filed under the declared
check_type) or OMN-16892 (b4ffdff6, born-path diff-derived behavior proof) — both are in this branch's merge base and both suites are in the 746-passing set above.