Overnight coordination: CEM fidelity work + PR fixes needed (helix team)

[himerus]

Context

The helixir and helix teams are working in parallel on CEM fidelity tonight. This issue coordinates overnight work between teams.

What helixir is building

We're building 3 new health scoring dimensions + a cross-library benchmark suite (epic on board):

1. CEM-Source Fidelity analyzer (in progress, Opus agent) — cross-references CEM declarations against actual component source code. Detects phantom events (CEM declares, source doesn't dispatch — the carousel bug pattern), missing events, property/attribute drift. This would have caught the hx-slide-change vs hx-slide bug automatically.

2. Slot Architecture analyzer — scores slot documentation quality, default slot presence, slot-property coherence.

3. Naming Convention Consistency analyzer — library-wide naming pattern scoring (event prefixes, CSS custom property prefixes, attribute-property naming coherence).

4. Cross-Library Benchmark Suite — validates the full 14-dimension scorer against 11 real WC libraries + helix. Will generate a helix-specific report with actionable issues.

What we need from the helix team

Once the CEM-Source Fidelity analyzer lands, we'll run it against all 88 helix components and report back with specific discrepancies found. The carousel event was just the first — there are likely more.

Action items for helix team:

• Review and fix any CEM discrepancies we surface
• The validate_type_definitions tool you built (PR feat: add validate_type_definitions MCP tool to catch CEM-to-types drift #83) is complementary — let's make sure it covers the same ground

PR status — needs your attention

PR	Title	CI Status	What's needed
#80	HxSkeleton/HxSpinner drift	changeset + format failing	Ava is fixing — changeset + format push incoming
#81	HxTabs drift	lint + test failures	Needs helix team — lint errors + test failures on Node 20 and 22. Please investigate.
#82	CEM sync CI gate	changeset only	Ava is fixing — changeset push incoming
#83	validate_type_definitions tool	lint + test failures	Needs helix team — lint errors + test failures on Node 20 and 22. Please investigate.

PRs #80 and #82 will be green shortly (Ava is pushing fixes now).
PRs #81 and #83 have deeper issues (lint + tests) that need the helix team to investigate.

How to collaborate

• Comment on this issue with findings, questions, or requests
• File new bugs on helixir board if you find CEM issues — Ava will triage and auto-mode will pick them up
• Once our benchmark suite lands, we'll post the full helix scorecard here

Timeline

• Now: CEM-Source Fidelity analyzer building (Opus agent)
• Next: Slot Architecture + Naming Consistency (parallel, after F1 merges)
• Then: Cross-Library Benchmark with helix report
• Morning: Full scorecard posted to this issue for helix team review

Ava is monitoring hourly. Auto-mode is running. Go time.

[himerus]

Progress update — 03:10 UTC

Good news:

• PRs fix: helix.d.ts HxSkeletonAttributes and HxSpinnerAttributes property drift #80, fix: helix.d.ts HxTabsAttributes properties drift from CEM #81, feat: automated CEM sync CI gate to prevent stale published manifests #82 are all nearly green (0 failures, 1 pending check each). Changeset fixes landed.
• F1 (CEM-Source Fidelity analyzer) completed and has PR feat: CEM-Source Fidelity analyzer — cross-reference CEM declarations against actual source code #85. The Opus agent built the full analyzer — event fidelity, property fidelity, attribute reflection. Currently fixing CI on PR feat: CEM-Source Fidelity analyzer — cross-reference CEM declarations against actual source code #85 (changeset + format + test adjustments).

Still needs helix team:

• PR feat: add validate_type_definitions MCP tool to catch CEM-to-types drift #83 (validate_type_definitions) still has 5 failing checks (lint, tests, changeset, format). Please investigate lint/test failures.

Next up:
Once PR #85 merges, F2 (Slot Architecture) and F3 (Naming Consistency) unblock and start building in parallel. After those, F4 (Cross-Library Benchmark) generates the full helix scorecard.

ETA for helix scorecard: Depends on F1 merge speed. If CI passes this hour, we could have the benchmark running by morning.

[himerus]

Progress update — 04:10 UTC

The entire epic built in under 2 hours. All 4 features completed by auto-mode Opus agents:

Feature	PR	CI Status
F1: CEM-Source Fidelity	#85	Merged to dev ✅
F2: Slot Architecture	#86	Review — test fixes in progress
F3: Naming Consistency	#87	Review — test fixes in progress
F4: Cross-Library Benchmark	#88	Review — changeset + test fixes in progress

All 3 remaining PRs have the same test failure pattern (Node 20 + 22) — likely existing test assertions need updating for the new dimension count. Fixing now.

Helix team status: The helix repo is very active — a11y fixes running (hx-meter, hx-rating, hx-time-picker, hx-structured-list). Multiple merge conflicts on hx-stat.ts being worked through. PR #83 (validate_type_definitions) still needs your attention for lint/test fixes.

Once PRs #86-88 merge, the cross-library benchmark will have scored all 88 helix components. Scorecard incoming.

[himerus]

Progress update — 04:21 UTC

Epic status — all CI fixes pushed, nearing green:

Feature	PR	CI Status	Notes
F1: CEM-Source Fidelity	#85	Merged to dev ✅	Done
F2: Slot Architecture	#86	9 pass, 0 fail, 1 pending	Almost green
F3: Naming Consistency	#87	9 pass, 0 fail, 1 pending	Almost green
F4: Cross-Library Benchmark	#88	8 pass, 1 fail (format), 1 pending	Format fix pushing now

Helix team — new blocker filed:

Filed helix#976 — merge conflict on hx-stat.ts is blocking 4 of your auto-mode features from progressing. Please investigate when you get a chance.

Next steps:

• Once PRs feat: Slot Architecture analyzer — score slot documentation, default slot, and slot-property coherence #86/feat: Naming Convention Consistency analyzer — library-wide naming pattern scoring #87/feat: Cross-Library Benchmark Suite — validate scorer against 11 real libraries + generate Helix report #88 go green → auto-merge → promotion pipeline (dev→staging→main)
• Once F4 merges, I'll run the cross-library benchmark and post the full helix scorecard here with actionable findings across all 88 components
• PRs fix: helix.d.ts HxTabsAttributes properties drift from CEM #81 and feat: add validate_type_definitions MCP tool to catch CEM-to-types drift #83 still need helix team attention (lint + test failures)

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AVA — 2026-03-18 04:21 UTC

[himerus]

Milestone — 05:10 UTC: Full epic landed, promotion started

All 4 epic features merged to dev and marked done:

Feature	PR	Status
F1: CEM-Source Fidelity	#85	Merged ✅
F2: Slot Architecture	#86	Merged ✅
F3: Naming Consistency	#87	Merged ✅
F4: Cross-Library Benchmark	#88	Merged ✅

What shipped tonight:

• 3 new health scoring dimensions (CEM-Source Fidelity, Slot Architecture, Naming Consistency)
• 14-dimension scoring model now complete
• Cross-library benchmark validates against 11 real WC libraries
• 4 bug fix PRs (bug: CEM reports hx-carousel event as hx-slide-change but actual component fires hx-slide #79-feat: automated CEM sync CI gate to prevent stale published manifests #82) — carousel event fix, skeleton/spinner drift, tabs drift, CEM sync gate

Promotion pipeline started:

• PR chore: promote dev to staging #89 (dev→staging) opened — awaiting CI
• Once staging CI passes → staging→main promotion

Helix team:

• helix#976 filed about hx-stat.ts merge conflict blocking your 4 features — please investigate
• PR feat: add validate_type_definitions MCP tool to catch CEM-to-types drift #83 still needs your attention (3 failing checks: cem-validate, test Node 20/22)
• Once F4 benchmark data is accessible post-merge, I'll post the full helix scorecard here

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AVA — 2026-03-18 05:11 UTC

[himerus]

Status update — 07:10 UTC

Promotion pipeline progress:

• PR chore: promote dev to staging #89 (dev→staging): Merged ✅ (06:09 UTC)
• PR chore: promote staging → main (v0.2.x release) #90 (staging→main): Open, 17 checks passing, 1 pending. Awaiting Jake's approval (HITL gate — batch includes new features, not just bug fixes).

Tonight's full pipeline:

8 feature PRs → dev (merged) → staging (merged via PR #89) → main (PR #90 awaiting approval)

Everything is queued and ready. Jake just needs to approve PR #90 when he's back.

Helix team: No responses to coordination requests yet. Issue #976 (hx-stat.ts merge conflict) and PR #83 (validate_type_definitions) still need attention. Your auto-mode is hitting max retries on several features — the merge conflict appears to be spreading.

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AVA — 2026-03-18 07:10 UTC

[himerus]

Release — 10:15 UTC: Merged to main

PR #90 (staging→main) merged. Full overnight work is now on main:

• 3 new health scoring dimensions (14 total)
• 4 bug fixes (carousel event, skeleton/spinner/tabs drift, CEM sync gate)
• Cross-library benchmark suite (11 libraries + helix)

Changeset release bot should create the version bump PR automatically. Monitoring CI on main.

Helix team: Once the release is cut, the new CEM-Source Fidelity analyzer will be available. We'll run the full helix scorecard and post results here.

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AVA — 2026-03-18 10:15 UTC