canon: sweep DOLCHEO+H residue from active surfaces (P0009 enforcement)

[klappy]

Summary

Surgical sweep of the DOLCHEO+H residue P0009 named as an explicit anti-pattern but never cleaned up. Two active surfaces fixed:

1. canon/constraints/mode-transitions-require-encoded-handoff.md (Tier 1) — the worst leak. Three uses of DOLCHEO+H + three links to a superseded URI (klappy://docs/oddkit/proactive/oldc-h-vocabulary), plus the same superseded URI in complements frontmatter. Every session reading mode-transition canon was being told the anti-pattern was governance, then sent to a superseded vocabulary doc when it tried to follow the link. Also corrected the artifact-list ordering to match DOLCHEO and added the missing opens.

2. writings/reverse-engineer-the-future.md (published essay) — line 256 used "DOLCHEO+H artifacts." The seven-item expansion was already DOLCHEO-shaped; only the bracketing acronym needed correction.

Verification

$ grep -rn "DOLCHEO+H" canon/ writings/ docs/ --include="*.md" | grep -v anti-pattern
(empty)

$ grep -rn "klappy://docs/oddkit/proactive/oldc-h-vocabulary" canon/ writings/ --include="*.md"
canon/definitions/dolcheo-vocabulary.md:243: [OLDC+H (superseded)](...) — the original five-type vocabulary

The remaining link is intentional: it's the supersession breadcrumb in the DOLCHEO vocabulary doc itself, explicitly labeled.

Out of scope (flagged separately)

• writings/from-passive-to-proactive.md — uses "encode OLDC+H" twice in recollective passages about historical practice; correctly historical, not retroactively rewritten here.
• canon/bootstrap/model-operating-contract.md — already correct on main. The reason it appeared stale earlier in session was that the oddkit MCP R2 cache was serving an older revision. That is an oddkit cache-invalidation concern, not a canon residue concern.
• odd/ledger/ and odd/handoffs/ entries using OLDC+H or DOLCHE — historical record at write time.
• Project-level instruction files (this Claude Project's own instructions) — outside the canon repo; operator action required.

Coupling note for PR #187

PR #187 ships its own version of canon/constraints/mode-transitions-require-encoded-handoff.md that has the same DOLCHEO+H bug. When PR #187 is rebased onto main after this merges, the rebase will conflict on this file and the resolution should keep the corrected version from this PR.

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Note

Low Risk
Low risk documentation-only updates that rename terminology and update internal links; risk is limited to broken references if any downstream docs still expect the superseded URI.

Overview
Updates canon and essay text to remove the deprecated DOLCHEO+H terminology and the superseded klappy://docs/oddkit/proactive/oldc-h-vocabulary link.

The mode-transition constraint now references DOLCHEO (including the correct item ordering and opens) and points complements/in-text/See Also links to klappy://canon/definitions/dolcheo-vocabulary. The public essay similarly renames “DOLCHEO+H artifacts” to DOLCHEO while keeping the expanded list consistent.

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[github-actions]

Canon Quality — oddkit_audit ✅

No dead klappy:// references or legacy link patterns found in writings/. 40 files scanned.

_{Spec: klappy://docs/oddkit/specs/oddkit-audit · Workflow: .github/workflows/canon-quality.yml · Run: #97}