docs(adr): ADR-F15 literature graph — GO, Bobenko+Springborn rank 7
Live-corpus spike (29 papers, 495 nodes, 590 edges, 478 dangling):
- Bobenko & Springborn 2007 at rank 7 — manual hub expectation PASS
- Pinkall & Polthier 1993 at rank 1 (foundational DGP)
- Score spread 5.7 % (0.002282→0.002159); flat but ordered correctly
- cite-boost alpha=0.3: ~0.06 % boost per unit PR — tie-breaker, not
hard re-rank; correct formula is distance/(1+alpha*pr), not multiply
- Known limitation: citing_id(DOI)→cited_id(OpenAlex) mismatch renders
inter-KB cross-citations invisible; non-blocking at corpus size 29
Closes R-46.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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