backfill(B-0036 partial-6): resolve line-20 calibration via §33 block compression on 3 docs

[AceHack]

Summary

Resolves the B-0036 line-20 calibration tension via path (a) compression.

3 docs had their §33 fields elaborated across multiple lines, pushing Non-fusion disclaimer past line 20:

Doc	Before	After
blake3-receipt-hashing	Non-fusion line 25	line 9 ✓
oracle-scoring-v0-design	Non-fusion line 27	line 9 ✓
provenance-aware-claim-veracity	Non-fusion line 48	line 13 ✓

Path (a) chosen over (b) or (c)

From B-0036's three resolution paths:

• (a) Compress §33 blocks ← THIS PR
• (b) Relax lint window from 20 to ~40 lines
• (c) Amend GOVERNANCE.md §33 spec

Reasoning:

• GOVERNANCE.md §33 spec stays unchanged (no rule-shifts to accommodate non-canonical docs)
• Discipline enforced as written, not relaxed for convenience
• Compression preserves content; nothing lost (for provenance-aware, the multi-paragraph "Promotion path to authoritative-detector status" prose was MOVED to a separate ## Promotion path section AFTER the §33 header, not deleted)
• Matches the natural §33 form (scope-statement, not scope-essay)

Lint progression

• After PR feat(hygiene): tools/hygiene/check-archive-header-section33.sh — §33 archive header lint + B-0036 backfill backlog #571 (lint shipped): 36 violations
• After backfill chain backfill(B-0036 partial): §33 archive headers on 7 Amara-courier-ferry research docs #572/backfill(B-0036 partial-2): bold-strip §33 labels on 6 Shape A pre-existing docs + line-20 calibration finding #573/backfill(B-0036 partial-3): normalize Operational-status enum-strict on 6 Shape A pre-existing docs #576/backfill(B-0036 partial-4): full §33 headers on 6 Shape B pre-existing courier-ferry docs (lint 9 → 3) #577: 4 violations
• After this PR: 1 (the 1 remaining is aminata-threat-model-5th-ferry which is fixed on PR backfill(B-0036 partial-5): bold-strip + enum-strict on aminata-threat-model-5th-ferry doc #578, awaiting merge)
• After backfill(B-0036 partial-5): bold-strip + enum-strict on aminata-threat-model-5th-ferry doc #578 + this PR both merge: 0 violations on main

B-0036 Sub-task 2 unblocked

Once lint count hits 0, B-0036 Sub-task 2 (wire check-archive-header-section33.sh to gate.yml as enforcing CI lint) is unblocked. The §33 substrate-primitive lifecycle reaches operational enforcement.

Test plan

• All 3 docs have all 4 §33 labels in lines 1-20
• Operational status enum-strict (research-grade)
• No content loss — provenance-aware Promotion-path prose preserved in ## Promotion path section after §33 header
• Lint count drops 4 → 1 (the 1 remaining is on backfill(B-0036 partial-5): bold-strip + enum-strict on aminata-threat-model-5th-ferry doc #578 branch)
• Future: B-0036 Sub-task 2 wire to gate.yml CI lint job

[Copilot]

Pull request overview

This PR resolves remaining §33 archive-header lint violations in three docs/research/** external-conversation imports by compressing the four required header fields so all labels land within the first 20 lines, per GOVERNANCE.md §33 and the check-archive-header-section33.sh lint behavior.

Changes:

• Compressed multi-line Scope: / Attribution: / Non-fusion disclaimer: fields into single-line (or fewer-line) forms so all four §33 labels appear within the first 20 lines.
• Preserved longer-form content by relocating it below the §33 header region (notably the provenance-aware doc’s promotion-path prose).
• Kept Operational status: research-grade enum-strict to satisfy the lint’s anchored-value check.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
docs/research/provenance-aware-claim-veracity-detector-2026-04-23.md	Compresses §33 header; moves promotion-path prose below header so Non-fusion disclaimer: is within the first 20 lines.
docs/research/oracle-scoring-v0-design-addressing-aminata-critical-2026-04-23.md	Compresses §33 header so Non-fusion disclaimer: is within the first 20 lines while keeping enum-strict operational status.
docs/research/blake3-receipt-hashing-v0-design-input-to-lucent-ksk-adr-2026-04-23.md	Compresses §33 header so Non-fusion disclaimer: is within the first 20 lines while preserving the document’s scope/attribution intent.