Blog from merged PR #1333

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Blog publication task for PR #1333

Source: #1333
Merged commit: ca799bc124b5312fd817d5c273224123ce7ebee9

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Bringing back the brain tests, and only the ones that test something

DRAFT — Merged PR; unpublished blog draft

PR: #1333

Head SHA: 56040636efd3b645809d1e9c439851bed53fed31

This file is an unpublished artifact, not an instruction to an agent.

brain-ci called build steps that #517 deleted, so its unit, integration and stress jobs never ran. The steps that compile are restored and green on Linux, the ones that cannot be are removed with reasons, stub commands are no longer counted as tests, and every restored step was shown to go red when broken. A t27 capability card now owns the restored targets, and the re-vendor makes the headless capability index green.

Merged PR. Checks reported by the author: 15 passed, 5 FAILED; this generator did not rerun them.

The problem

Why every unit leg failed: #517 removed the test steps from build.zig while brain-ci kept calling them, so nothing behind the unit job ever ran.

How it works

What came back: three region test steps, an integration step over the aggregator and integration suite, and the 261-test stress suite, all green on ubuntu-latest.

What restoring them uncovered: the stress suite still used the pre-sharding registry, and RegionMetrics.deinit read its allocator after HashMap.deinit made it undefined.

What was removed instead of faked: the intraparietal and hslm legs, the metrics export job, and every tri command that prints a not-implemented notice and exits zero.

How we know the gates bite: each restored step was broken on purpose locally and on throwaway CI branches, and each one went red at exactly that job.

What changed

• build.zig restores test-basal-ganglia, test-reticular-formation, test-locus-coeruleus, test-brain and test-brain-stress, and links libc for state_recovery.
• metrics_dashboard.zig: RegionMetrics.deinit no longer reads the allocator after deinit, setMetric overwrite no longer leaks, and its tests clean up after themselves.
• stress_test.zig reads claims through the sharded registry (count and a read-locked findClaim) and compiles again.
• brain-ci.yml drops the intraparietal and hslm legs, the Export Brain Metrics job and every call to a tri stub, and gates stress on zig's own test count, treating a missing count as NOT MEASURED.
• brain-ci.yml report prints real job results and the merge gate runs under always() so it fails red instead of skipping.
• build.zig writes each brain test root and step out literally so the S01 capability checker names every restored target precisely.
• Re-vendored gHashTag/t27 at 39e06aa0: the trinity/brain.regions card (t27#5965), the S01 checker that skips build.zig comments (t27#5474) and MCP agent bindings (t27#5632).
• specs/reproduce/capabilities.t27 measures trinity/brain.regions in RUN and drops mcp.needle-mcp and mcp.trinity-mcp from KNOWN_BLOCKED.
• specs/reproduce/contracts.t27 raises TESTS_RUN_MIN from 77 to the 78 tests that run at the new pin.

How we checked

Check	Status	Result	Evidence
`zig build test-basal-ganglia / test-reticular-formation / test-locus-coeruleus -Dci=true --summary all (zig 0.15.2)`	passed	51/51, 48/48 and 52/52 tests pass locally and on ubuntu-latest in push run 37181206224.	Build Summary lines in the three Unit Tests job logs of run 37181206224.
`zig build test-brain -Dci=true --summary all`	passed	151/151 tests pass (13 aggregator + 138 integration) after the metrics_dashboard and libc fixes, locally and in run 37181206224.	Integration Test job log: Build Summary: 5/5 steps succeeded; 151/151 tests passed.
`zig build test-brain-stress -Dci=true --summary all`	passed	261/261 stress tests pass with 0 leaked; the step prints brain stress: 261/261 tests passed, 0 leaked.	Stress Test job log of run 37181206224; stress_test.zig compiles only after the sharded-registry fix.
`brain-ci push run 37180861619 on f8d82f8`	FAILED	Units passed but the integration binary failed to compile on Linux: dependency on libc must be explicitly specified (state_recovery std.c.getpid).	Fixed by f4170dd; a cross-compile for x86_64-linux-gnu reproduces the error before and compiles after.
`brain-ci push run 37181206224 on f4170dd`	passed	Every job succeeded: health 100.0/100, three unit legs, integration, stress, CLI Smoke 17 of 17 probes, and the report.	gh run view 37181206224; Merge Gate skipped because it runs only on pull_request events.
`local negative controls via a break-run-restore script for each restored step`	passed	Every break went red: BG 48/51, RF 43/48 plus a leak, LC 47/52, test-brain segfault with 151/151 printed, stress 248/261; every restore went green.	Local negative-control table in the PR description.
`CI negative-control branches fix/brain-ci-nc2-units, -integration, -stress, -stress-unmeasured`	passed	Each run went red at exactly the targeted job with upstream jobs green: runs 37181508280, 37181253809, 37181281587 and 37181306269.	CI negative-control table in the PR description; the throwaway branches are deleted.
`stress step parser fed simulated pass, fail, leak-only, compile-error and empty outputs`	passed	Pass gives RESULT=pass; failures and leaks give fail; compile error and empty output give not-measured with exit 1, never a zero score.	Matches CI: run 37181306269 printed brain stress was NOT MEASURED for a compile error.
`zig test src/brain/intraparietal_sulcus.zig`	FAILED	Fails with 11 compile errors starting at use of undeclared identifier hslm; the leg is dropped rather than faked.	Stubs GF16 = f32, TF3 = f32, PHI: f32 = 3.0 remain after hslm moved to trinity-training.
`actionlint -ignore SC2086 -ignore SC2129 .github/workflows/brain-ci.yml; zig fmt --check build.zig and touched sources`	passed	Both clean on the final workflow and the touched Zig files.	Run after the merge of main, which had produced a duplicated permissions block that is now removed.
`S01 checker (external/t27/tools/trinity_manifest.py inventory + check) on a clean tree at 291ac8b`	FAILED	11 UNASSIGNED_TARGET findings, all brain targets: five steps and six src/brain test roots that no vendored t27 capability card owns. Before 291ac8b they read as test:None plus two steps. The other findings are the tolerated PIN_MISMATCH and COUNT_MISMATCH drift.	Resolved by gHashTag/t27#5965 (39e06aa0) and the re-vendor in 40a5315; the next entries record the check at the new pin.
`tools/contracts.py vendor --t27 <t27 clone> --revision 39e06aa0, then tools/contracts.py check`	passed	The vendor holds 76 files of gHashTag/t27 at 39e06aa0 (one more: the brain.regions card), and the offline check says the consumed contracts are what the lock says.	Commit 40a5315; contracts --self-check and capabilities --self-check also ok.
`S01 checker and tools/capabilities.py index in reproduce.yml, runs 37190239982 (40a5315) and 37193597584 (5604063)`	passed	52 cards: 24 measured, 1 blocked (registry.commands), 27 excluded; every capability is what the index says. Main has 51 cards: 21 measured, 3 blocked. No UNASSIGNED_TARGET; only PIN_MISMATCH and COUNT_MISMATCH drift.	Headless profile job logs; the test step reports 135/135 steps succeeded on both arches.
`tools/contracts.py check --upstream --t27c <t27c at 39e06aa0>, zig 0.16.0, macOS arm64, first run`	FAILED	4 findings: test-report --all did not list llm.igla-chat, mcp.needle-mcp and mcp.trinity-mcp (each 1/1 alone), so 75 tests ran under the floor of 77.	Not reproduced by a direct --all run or two later full checks; the cause is unknown; the host was shared with other compiler builds.
`tools/contracts.py check --upstream --t27c <t27c at 39e06aa0>, re-runs with TESTS_RUN_MIN 77 and then 78`	passed	Both exit 0: 58 specs measured, 78 tests run and passing, 11 blocked, 2 with no tests; the consumed contracts are what the lock says.	CI contracts job passed on 40a5315 (run 37190239971).
`t27c test-report on each of the 11 TEST_BLOCKED specs at 39e06aa0`	passed	All 11 are still blocked, and each first error is identical to the one TEST_BLOCKED_ERRORS records.	Compared string for string with the regex tools/contracts.py uses.
`t27c test-report specs/reproduce/contracts.t27`	FAILED	BLOCKED: spec.zig:29:46 expected type expression, found &#x27;;&#x27; because [1]u32 = [48] is emitted as Zig [48]. The same happens on main a6ec8dc.	Pre-existing compiler lowering; tools/contracts.py reads TESTS_RUN_MIN directly, so the floor is still enforced.
`brain-ci push run 37184075728 and pull_request run 37184077352 on 291ac8b`	passed	Every brain-ci job green in both runs: health 100.0/100, units 51/51, 48/48 and 52/52, integration 151/151, stress 261/261 with 0 leaked, CLI Smoke 17 of 17.	gh run view 37184075728 and 37184077352 --repo gHashTag/trinity; the Merge Gate ran and passed on the PR run.
`brain-ci push run 37193596465 on 5604063`	passed	every brain-ci job green: health 100.0/100, units 51/51, 48/48 and 52/52, integration 151/151, stress 261/261 with 0 leaked, CLI Smoke 17 of 17, report success; Merge Gate skipped as it is PR-only	gh run view 37193596465 --repo gHashTag/trinity
`brain-ci pull_request run 37193597519 on 5604063`	passed	every brain-ci job green with the same counts, and the Merge Gate ran and passed. In the same PR, t27 contracts (run 37193597515) and both Headless profile jobs (run 37193597584) passed	gh run view 37193597519 --repo gHashTag/trinity

What this does not show

• tri task, tri event and tri stress --scan/--record/--metrics/--history remain stubs that exit 0; CI no longer calls them as tests.
• intraparietal_sulcus.zig still does not compile; its tests target the hslm library now in gHashTag/trinity-training.
• The stress maximum-TTL test still passes silently if the claim is missing; that weakness predates this change.
• trinity/registry.commands stays known-blocked: the registry export writes the time it ran into generated_at.
• The headless profile and capability index were measured in CI only, not locally, because the shared host had 6 to 9 GB free.
• One local contracts run missed three specs from t27c test-report --all; three later runs did not reproduce it and the cause is unknown.
• The test blocks of specs/reproduce/contracts.t27 do not compile under t27c test-report, on main as well.

How this post was made

Merged PR; unpublished blog draft. This article is generated from the author's work report for the exact PR head commit. Test results are author-reported, not independently rerun by this generator. Merge status is not proof of deployment or runtime correctness.

Receipts

• gHashTag/trinity PR #1333
• Reported head commit 56040636efd3
• Merge commit ca799bc124b5

Topic tags

#brain_ci #zig #negative_control #honest_metrics

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