docs(board): record consolidation-sprint debt landed after #209

[AdaWorldAPI]

Summary

Follow-up to #209 (board hygiene, merged). Completes the board's Outstanding
debt list with the PR-X consolidation-sprint findings discovered after #209's
branch was cut, ground-truthed against ls src/hpc/ on 2026-05-27.

Adds a Consolidation-sprint debt subsection to .claude/blackboard.md:

• PR-X12 codec ⚠️ PARTIAL — src/hpc/codec/ has ctu/mode/predict/mod only; RDO + ANS entropy stages missing. Doc-canon merged (docs(pr-x12): canon follow-ups — R-7 path fix, R-13 primitives, R-14, R-15 #198/feat(cesium): implement tileset.rs cold-import parser — Group-A entry, no-serde #205), kernel half-built.
• PR-X4 splat4d ❌ OUTSTANDING — no src/hpc/splat4d/. Unbuilt.
• PR-X9 cognitive ❌ OUTSTANDING — no src/hpc/cognitive/. Unbuilt; must consume lance-graph-contract::splat::CamPlaneSplat (q8), never redefine it (contract is sacred).
• Records the landed half: ✅ PR-X10 linalg/, ✅ PR-X11 pillar/, ✅ PR-X13 ogit_bridge/, ✅ PR-X3 blocked_grid/.

Docs-only; no code or test changes.

Test plan

• Findings verified against the actual tree (ls src/hpc/), not inherited from plans.
• No source/test files touched — board markdown only.

https://claude.ai/code/session_01HbqooFZHAjaUtFEzhA1R2u

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Generated by Claude Code

Summary by CodeRabbit

• Documentation
  • Updated internal development documentation to reflect consolidation sprint status and component tracking progress.

[coderabbitai]

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: 2357d354-6b85-4515-b4a4-5f0afe51644e

📥 Commits

Reviewing files that changed from the base of the PR and between 8b4f5c4 and e0dccd5.

📒 Files selected for processing (1)

• .claude/blackboard.md

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📝 Walkthrough

Walkthrough

This PR updates the internal blackboard documentation with a new "Consolidation-sprint debt" section that tracks the current status of PR-X program consolidation work, enumerating shipped components, missing codec entropy stages, unbuilt modules, and architectural constraints around the CamPlaneSplat contract.

Changes

PR-X Consolidation Status Documentation

Layer / File(s)	Summary
Consolidation sprint debt section .claude/blackboard.md	New section documenting PR-X consolidation status: partial PR-X12 codec implementation (missing RDO/ANS stages), unbuilt splat4d/ and cognitive/ modules, and the mandate to consume CamPlaneSplat from lance-graph-contract rather than redefining it.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A blackboard note, clear and bright,
Tracks the consolidation in flight,
Codec stages, modules to build,
Sacred contracts that must be fulfilled,
Status documented with care—onward we go!

🚥 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 title clearly and specifically summarizes the main change: documenting consolidation-sprint findings in the board after PR #209.
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/continue-ndarray-x0Oaw

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