[codex] Add citation context reconciler

[newmattock]

Addresses #16

Summary

• add citation-context-reconciler, a focused AI research assistant slice for issue AI-Powered Research Assistant Suite #16
• detect citation-intent mismatch, contradictory cited effects, stale support, method/population context gaps, and reproducibility artifact gaps
• export reviewer comments, revision tasks, a citation matrix, reproducibility score, research opportunity feed, deterministic audit digest, SVG walkthrough, and short MP4 demo

Validation

Fresh validation on 2026-05-17 20:55 PDT:

• npm test -> citation context reconciler tests passed
• npm run demo -> ready: false, blockers: 5, warnings: 6, reproducibility: 50% low, digest citation-context:5:6:c4998c5dea561415
• npm run demo:video -> wrote docs/demo.mp4
• file docs/demo.mp4 -> ISO Media, MP4 v2 [ISO 14496-14]
• git diff --check
• focused sensitive-string scan for API keys, secrets, tokens, passwords, private keys, wallet material, and EVM addresses

/claim #16

[newmattock]

@algora-pbc /claim #16

[newmattock]

/claim #16