fix: wave-5 readiness — AIF Handoff overlap analysis + scope annotations (SSOT #27-#29)

[artyhoo]

Summary

• AIF Handoff overlap analysis (mandate 2026-05-11): 3-stage research → independent review → implementation. Established that AIF Handoff coordinator is mostly ORTHOGONAL to our 7 handoff-family primitives (P1-P7). One ADAPT shipped, two DEFER registered.
• SSOT entries docs(research-patches): Wave 6 AI-doc cold audit (§13.26) #27-feat: Wave 7 — hot-checks + harness-hooks + template test + §13.23 4th-layer #29 added to prior-art-evaluations.md (DEFER×2 + ADAPT×1 for AIF Handoff primitives).
• Principle 10 (packages/core/principles/10-research-patch-annotation.test.ts) — enforces <!-- scope:<slug> --> first-line annotation on all research patches; 85 lines, 3 anti-tautology mutation checks.
• CI gate in audit-self.yml → «Research patch scope annotations» step — blocks merge if any patch missing annotation.
• 20 research patches retroactively annotated with scope slugs (§13.21, §13.23, §13.25, wave-7, phase-8.8, methodology, aif-handoff-mandate).
• §13.25 SSOT ID remap (docs: goal-hierarchy restructure + doc-authority discipline (L1+L2; L3+Option E baseline) #16-Wave 1 (§13.21): add Authoritative-for headers to 11 shipped surfaces #21 → docs(research-patches): Wave 6 AI-doc cold audit (§13.26) #27-fix: wave-5 readiness — second SSOT ID remap #27-#32 → #31-#36 (AIF Handoff overlap closure) #32) fixing Wave 7 ID collision.
• §13.25 status update in open-questions.md: research GO, implementation pending (Wave 5).

Test plan

• make self-audit → 56 tests green (10 principle files incl. new docs: Phase 8.8 session prompt (replaces C-parked PR #9) #10)
• CI: Research patch scope annotations step green (all 20 patches annotated)
• CI: No file > 500 lines green (§13.23 = 499, §13.25 = 487 post-annotation)
• grep -L "^<!-- scope:" docs/meta-factory/research-patches/*.md | grep -v README → empty
• Prior-art trailers present on all 4 mandate commits (escape-hatch ×3, positive cite feat: Wave 7 — hot-checks + harness-hooks + template test + §13.23 4th-layer #29 ×1)

§1.7 Forward-check applied

Checked all active discipline layers for the new <!-- scope:<slug> --> annotation rule (principle 10 + CI gate):

• Capability-commit gate (CLAUDE.md): principle 10 is ≥80 LOC under packages/ → capability commit → Prior-art: prior-art-evaluations.md#29 trailer present in commit d7272c6 ✅
• SSOT consult (prior-art-evaluations.md): entry feat: Wave 7 — hot-checks + harness-hooks + template test + §13.23 4th-layer #29 covers the ADAPT verdict for AIF handoff:task first-line annotation pattern; commit cites it ✅
• Trigger sweep §1.6: §13.25 status updated to «implementation pending» in open-questions.md ✅
• Doc-authority (doc-authority-hierarchy.md §2): research patches are scope-bound by filename per folder-level authority — README.md in the folder carries the authority header; individual patch files inherit, no per-file Authoritative-for required ✅
• §1.9 SSOT citation existence-check: SSOT entry feat: Wave 7 — hot-checks + harness-hooks + template test + §13.23 4th-layer #29 exists at commit 5d8cf1c (Phase A), cited positively in capability commit d7272c6 (Phase B) — ID present before citing commit ✅

§1.7 Backward-check applied

New rule scope: every docs/meta-factory/research-patches/*.md (except README.md) must have <!-- scope:<slug> --> as first line.

Complete sweep (not §1.5 floor): all 20 existing patch files enumerated from directory listing and annotated atomically in commit d7272c6. Zero exemptions. Verification:

• grep -L "^<!-- scope:" docs/meta-factory/research-patches/*.md | grep -v README → empty ✅
• CI gate in audit-self.yml enforces the invariant on all future patches ✅
• Principle 10 test enforces it programmatically with 2 anti-tautology mutation checks ✅
• README.md exclusion explicit in both CI gate and principle test ✅

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2026-05-12 retroactive Wave 8.5 note: This PR's §1.7 Forward-check section would not pass the Wave 8.1 substance gate (no file:line citations present). Pre-Wave-8 acceptance — kept as historical evidence of the #discipline-theatre gap that motivated §13.29.