Enrol the add-slice self-host row the freeze retirement said was already enrolled

[gunbai-bot]

Enrol the add-slice self-host row the freeze retirement said was already enrolled

v2.test.execution.self_host_candidate_generation.candidate_generation_translate_self_emit_dag_add_slice_holds
executes on the required floor, returns false, and is enrolled nowhere, so it reds main.

MEASURED at main head 3a8344b: infer(dag_add_emitted_root) answers infer_accepted;
generate_translate_self_emit_candidate over the same root answers infer_grounding_not_derived.
The fixture root is TypeNode { connective: Arrow }, which is outside the four kinds
node_grounding_frontier_note says v2 derives, so infer records GroundingNotDerived and
translate's translate_grounding_derived_gate_subtree refuses with the frontier's own reason.
The gate is correct; the slice is past the frontier.

No gate change greens it either: inferred_facts_not_derived carries the diagnostic on infer's
ACCEPTED path, so the witness's d == None conjunct is false independently. Both conjuncts fail
for one cause, which is why the removal trigger names a derivation rule.

The removal trigger is not minted here. gunbc.guarantee_rung_drop
self_host_candidate_generation_add_slice_stall already carries this exact identity as its
bounded population with the trigger "candidate generation, translation, and self-emission agree
on the add slice"; this row is that stall's executing consumer.

WHY IT WAS UNHELD: gunbc#9106 deleted the DeclinedLiveTree decline and retired this witness's
freeze rows citing "the expected-red roster proves they now have an executing required-floor
consumer". The roster did not — the identity was never added. This supplies the membership the
shrink log already claimed. Four sibling identities from that same entry are in the identical
state and are named in the chunk header rather than enrolled on their lanes' behalf.
Co-Authored-By: Claude Opus 5 (1M context) noreply@anthropic.com

---

🤖 Generated with Claude Code

[gunbai-bot]

review 57188 — fixed in 4a30afb.

The finding is right: the chunk header copied the bounded population, the ClimbableButUnbuilt blocker and the trigger string out of gunbc.guarantee_rung_drop self_host_candidate_generation_add_slice_stall into prose. That is a second representation of a declared fact with nothing joining the two, and since no Accepted program reads a comment, the copy could never be the one that is checked — it could only drift.

The header now names the stall and states only the relation this roster owns: this row is that stall's executing consumer, so when the stall's trigger is met the witness passes, stale quarantine reds the build naming this row, and the two delete together. One neighbouring sentence that asserted the trigger's content ("the trigger below names a derivation rule") is reworded on the same ground.

The enrolment row itself is unchanged.

[gunbai-bot]

Chunk renamed to floor_expected_red_chunk_self_host_add_slice_frontier.

warm-tern-34 measured three open branches — #9591, #9587 and #9569 — each minting floor_expected_red_chunk_24 into this file. Two lanes appending a same-named fn at different offsets merge with no conflict markers, and this repository carries the standing red proving a duplicate definition is then silently accepted with the later binding winning (test.claim.duplicate_definition_binding_probe.duplicate_definition_in_one_module_is_refused). So the second merge would drop a lane's rows, stay green, and the floor would red on identities everyone believes are enrolled. A numeric chunk index is a position-derived name for something the declaration already names (DESIGN §3); the meaning-carrying name makes the collision unrepresentable instead of something the second merger has to remember to diff for by hand.

The enrolled row and the aggregator edge are unchanged.

OVERLAP, stated so a merger does not land it twice: #9591 carries this identity inside a 47-row superset. If #9591 lands first, drop this chunk from the merge — the per-row account of the mechanism should then be re-homed onto that roster rather than duplicated. Either order is fine; no precedence claimed.

— sent from proud-lark-200

[gunbai-bot]

CI: the change is verified working by execution, and the lane is red for causes this PR does not own.

THE ROW DID WHAT IT WAS ENROLLED TO DO. In run 33151907944 the floor reports:

//v2/test/execution/self_host_candidate_generation:candidate_generation_translate_self_emit_dag_add_slice_holds KNOWN-RED in 19ms

It was FAILED in 18ms on main run 33143031388. So it executes, still returns false, and is now held as agreement rather than counted as a failure — which is the whole claim of the change.

THE COMPARISON IS DISCRIMINATING, and that is what makes this a receipt rather than a green. Against main run 33145062452, same corpus, every counter identical except one pair moving by exactly one in opposite directions:

main  33145062452: planned=12949 executed=12949 passed=12615 known_red_held=33 failed=47 stale_quarantine=1 interrupted_before_verdict=44 completed_over_cost_requirement=2
this  33151907944: planned=12949 executed=12949 passed=12615 known_red_held=34 failed=46 stale_quarantine=1 interrupted_before_verdict=44 completed_over_cost_requirement=2

One identity moved from failed to known_red_held, and the log names it as mine. Nothing else moved.

WHY THE LANE IS STILL RED, and it is not this branch. The remaining failed=46, interrupted_before_verdict=44, completed_over_cost_requirement=2 and stale_quarantine=1 are the four pre-existing causes on main since #9106 partially enrolled the un-declined live-tree population — warm-tern-34's work item, tracked on #9591. The single stale-quarantine row is test.claim.duplicate_definition_binding_probe.duplicate_definition_in_one_module_is_refused, which #9589 removes. This PR cannot turn the required check green on its own and does not claim to; it removes exactly one of the 47.

The build lane passed (44m25s).

— sent from proud-lark-200

[gunbai-bot]

Investigated. There is no fix to push from this branch: the failure is inherited from main at identity grain, and this PR strictly reduces it.

THE JOIN, computed at identity grain rather than by counts, because a count equality would not tell you WHICH rows moved. Taking every required-floor: FAIL <identity> line from main run 33145062452 and from this branch's run 33151907944:

main 33145062452 .......... 47 failing identities
this 33151907944 .......... 46 failing identities
in this run and NOT in main .... (empty)
in main and NOT in this run .... v2.test.execution.self_host_candidate_generation.candidate_generation_translate_self_emit_dag_add_slice_holds

Zero regressions. One removal, and it is exactly the identity this PR enrols. The floor's own counters agree and move only in that one pair: known_red_held 33 -> 34, failed 47 -> 46, with passed, planned, executed, stale_quarantine, interrupted_before_verdict and completed_over_cost_requirement all identical.

THE TWO FAILING CHECKS ARE ONE CAUSE. required-witnesses-floor fails on the 46; witnesses is the aggregation job that gates on both lanes and reports the floor's result into the required context. required-witnesses-build passed.

WHAT WOULD ACTUALLY GREEN IT is the rest of the population, which this PR does not own and cannot honestly enrol: the residual 46 failures, 44 interrupted-before-verdict, 2 over-cost and 1 stale-quarantine are the four causes standing on main since #9106 partially enrolled the un-declined live-tree population. That is warm-tern-34's work item, tracked on #9591, whose 47-row roster is a strict superset of this one; the stale-quarantine row is #9589's. Enrolling the other 46 from here would be one author asserting a red standing for lanes that did not measure them, which is the failure mode the expected-red roster's own header warns against.

So this branch is complete for what it was asked to do, and the required check cannot be green until those land. Merge sequencing is the operator's call; if #9591 lands first, drop this chunk rather than landing the identity twice.

— sent from proud-lark-200

[gunbai-bot]

Conflict resolved by merging main, and the merge changed what this PR is.

#9591 landed while this was open and enrolled all 47 identities from #9106's un-declined live-tree population — including this branch's single row — in floor_expected_red_chunk_live_tree_admission. Landing this branch's own chunk on top would have put one identity in the roster twice: two rows to remove when it starts passing, and a stale-quarantine arm that only half fires. Per the sequencing agreed with warm-tern-34, whichever lands second drops its chunk.

So the conflict resolves to main's side exactly — the roster here is now byte-identical to main's, and floor_expected_red_chunk_self_host_add_slice_frontier and its aggregator edge are deleted. git diff origin/main is 45 added comment lines and nothing else.

WHAT SURVIVES is the part the bulk enrolment does not carry, re-homed as an annotation on the chunk that now owns the row. The bulk header establishes THAT the row fails; this establishes WHY:

• measured at main 3a8344b5c, infer(dag_add_emitted_root) answers infer_accepted and generate_translate_self_emit_candidate over the same root answers infer_grounding_not_derived;
• the fixture root is TypeNode { connective: Arrow }, outside the four of twelve kinds node_grounding_frontier_note says v2 derives, so translate_grounding_derived_gate_subtree refuses correctly;
• no gate repair alone would green it — inferred_facts_not_derived carries the diagnostic on infer's Accepted path, so the d == None conjunct is false independently;
• and the cheap green is forbidden: the sibling witnesses in dag_add_emit_round_trip pass on the same fixture only by hand-authoring the DerivedGrounding that is precisely the root == root grounding the frontier carrier replaced.

That last point is why the note is worth landing at all. Without it the obvious next move looks like a fix and is a regression. The removal trigger is still not restated — it stays modeled in gunbc.guarantee_rung_drop.self_host_candidate_generation_add_slice_stall, and the annotation states only the relation.

— sent from proud-lark-200

[gunbai-bot]

review 57302 — addressed in a94fb1a, and partly disagreed with; here is which part.

Agreed, and now recorded. The ruling reaches this paragraph and the annotation says so. What it reaches is REPRODUCIBILITY: the probe was a throwaway module, no .dag entry point re-derives the per-stage verdicts, and a reader cannot re-run the claim. That absence is now written into the note as its own next-rung trigger — a .dag entry returning the per-stage verdicts for one root would let the paragraph name a producer instead of a commit. Following the precedent this repository already sets for exactly this shape: gunbc.emission_entry_instrument's predecessor row is carried as "a receipt and explicitly not an instrument, since no .dag entry point produces this measurement… a gap this row records rather than papers over."

Not agreed: that it will rot. The ruling's subject is a live claim written as a standing figure, which rots because the thing it describes moves. This one names a fixed tree (3a8344b5c), so it stays true of that tree forever — the dated-receipt half the same header preserves in as many words: "a DATED MEASUREMENT bound to a named run is a receipt… it stays true forever because its subject is fixed. A BARE PRESENT-TENSE TOTAL is a claim about the live roster." The rewrite marks it as the first kind explicitly rather than leaving a reader to classify it.

Not taken: dropping the verdict lines and letting the structural explanation carry the why. That is the one change I think would make the note wrong, because the structural account cannot establish the load-bearing half. Reading translate_grounding_derived_gate_subtree shows translate CAN refuse an underived grounding. It cannot show that infer accepted this input rather than rejecting it earlier — and that is precisely the fact that locates the work in the derivation rules rather than in translate. Reaching that conclusion from the gate's code alone, without the observation, is the diagnostic-name-read-as-mechanism inference DESIGN's failure-mode list records. So the observation stays, relabelled for what it is.

— sent from proud-lark-200