docs(board): refresh blackboard to current epoch + append 2026-05-26 epiphanies

[AdaWorldAPI]

What this is

Board hygiene — doc-only, no src/ changes.

The .claude/blackboard.md described only the older "Polyglot Notebook single-binary" program. CLAUDE.md mandates "always read .claude/blackboard.md before starting any task", so a board pointing at an unrelated epoch actively mis-orients every new session. And .claude/board/EPIPHANIES.md was missing the entire current epoch (its last entry was 2026-04-19).

Changes

.claude/blackboard.md — prepend a Current epoch (2026-05-26) section (Polyglot content kept intact below, relabelled "separate/older program"):

• Evidence model (L0 source / L1 docs(pr-x12): audit findings for hallucinations in PR-X12 docs #200-audit+triage spot-check / L2 plans=inspiration); whole-file-reads-only; v4-local / v3-committed.
• Settled architecture: Palette256 + Fisher-z = integer exact-cosine (validated 10k×10k); cognitive CamPlaneSplat ≠ graphics splat3d; EWA-Σ = uncertainty/cert not similarity; Pillar suite 6–17, Pflug-10 certifies the palette; typed-distance rules.
• Outstanding: feat: AVX-512 kernels, cache-derived GEMM tiles, CogRecord 64KB #4 / HPC backends: matrixmultiply GEMM, FFI backends, PackedDatabase cascade #5 / CI tests #7, cam-pq-production-wiring, UNUSED_INVENTORY A1–A9.
• Merged/closed: docs: plans-alignment-triage — rank ChatGPT 48h corpus against ground truth (W1 #1) #201/feat(cesium): implement tileset.rs cold-import parser — Group-A entry, no-serde #205/feat(splat3d): render-depth certification — Cesium SSE × EWA depth, HHTL cascade #206/fix(splat3d): address Codex review on render-depth certification (#206 follow-up) #208 ✅; bench(splat3d): EWA-SYRK crossover — kill-or-justify the BLAS-backend premise (W1 #3) #207 ❌ closed; phi_spiral.rs abandoned.

.claude/board/EPIPHANIES.md — append the 2026-05-26 run (append-only honored), each tagged with implementation debt:

1. Palette256+Fisher-z exact-cosine (VALIDATED 10k×10k; canon-unwritten = HPC backends: matrixmultiply GEMM, FFI backends, PackedDatabase cascade #5 debt).
2. SELECT (integer) vs uncertainty-Σ (float) — co-certified sibling pillars.
3. EWA-SYRK BLAS backend = category error (bench(splat3d): EWA-SYRK crossover — kill-or-justify the BLAS-backend premise (W1 #3) #207 closed).
4. C/HLOD = Cesium HLOD (shipped) + cert overlay.
5. Grounding-discipline meta-finding (this session's float code was net-zero; whole-file reads + docs(pr-x12): audit findings for hallucinations in PR-X12 docs #200 evidence model are now binding) + the carried debt list.

Test plan

• Doc-only; no code paths touched (no build/clippy/fmt impact on src/).
• EPIPHANIES.md append-only invariant preserved (existing entries untouched).
• blackboard.md Polyglot section preserved verbatim below the new header.
• Reviewers: confirm the epiphany debt-tags match the triage (feat: AVX-512 kernels, cache-derived GEMM tiles, CogRecord 64KB #4/ HPC backends: matrixmultiply GEMM, FFI backends, PackedDatabase cascade #5/CI tests #7) and that no claim is stated above its evidence level (10k×10k attributed to user; everything else L0/L1-grounded).

https://claude.ai/code/session_01HbqooFZHAjaUtFEzhA1R2u

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Generated by Claude Code

Summary by CodeRabbit

• Documentation
  • Updated internal development documentation with architectural notes and technical findings.

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No user-facing changes in this release.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: c4157339-8829-458d-81ed-5f834f6227ed

📥 Commits

Reviewing files that changed from the base of the PR and between 17d8da8 and 4f64cdd.

📒 Files selected for processing (2)

• .claude/blackboard.md
• .claude/board/EPIPHANIES.md

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📝 Walkthrough

Walkthrough

This PR extends the project's internal documentation by adding epoch-level grounding context and architecture overview to .claude/blackboard.md, and appending five dated technical epiphanies to .claude/board/EPIPHANIES.md that validate algorithm approaches, clarify architectural design, and document process discipline corrections.

Changes

Documentation: Epoch Grounding and Validated Discoveries

Layer / File(s)	Summary
Current-epoch grounding and architecture documentation .claude/blackboard.md	Introduces new front-matter describing the current epoch's evidence-model rules, settled architecture boundaries (palette/splat/pillar/certification), outstanding triage items, and merged/closed status. Explicitly marks the Polyglot Notebook section as separate/older program.
Algorithm, architecture, and process epiphanies .claude/board/EPIPHANIES.md	Appends five dated epiphanies: Palette256 + Fisher-z integer-first similarity replacement; two co-certified lanes for similarity/uncertainty propagation; EWA-SYRK backend category-error clarification; geospatial Cesium HLOD certification note; and process meta-entry documenting grounding-discipline updates.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A rabbit hops through knowledge deep,
Where epiphanies and findings sleep,
New grounding truths and lanes so bright,
The blackboard glows with epoch light! 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title clearly describes the main changes: refreshing the blackboard documentation to the current epoch and appending newly dated epiphanies, which matches the file-level summaries and PR objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/board-hygiene-MAOO0

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Don't ground the plan on nonexistent distance APIs

This “Grounded” entry points future work at src/distance.rs for a Distance trait plus similarity_z/fisher_z_inverse, but repo-wide search shows similarity_z and fisher_z_inverse only appear in these newly added docs, and the only Distance trait is in src/hpc/clam.rs, not src/distance.rs. Because the section is marked VALIDATED/grounded, agents following it will try to wire against APIs that do not exist in this crate instead of either adding them or citing the correct module.

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