feat: add AI-assisted research tools module

[grantf04]

@algora-pbc /claim #13

Closes #13

What this adds

Adds a self-contained ai-assisted-research-tools/ module for the issue #13 MVP: AI paper summaries, peer review diagnostics, and citation recommendations for scientific manuscripts.

Requirement mapping

• AI Paper Summarizer → implemented in ai-assisted-research-tools/src/research-ai.js with abstract, executive, and layperson modes, domain-aware keyword profiling, key findings, implications, and next steps.
• AI Peer Review Aid → implemented in peerReviewAid with similarity checks against uploaded/open-corpus snippets, clarity checks, statistical reporting checks, compliance checks, and domain templates for biology, physics, and social science.
• AI Citation Tool → implemented in recommendCitations with local open-corpus retrieval, APA/MLA/Nature formatting, similar-paper suggestions, and manuscript insertion snippets.
• Reviewer dashboard and API smoke tests → implemented in src/server.js plus public/ static UI.
• Tests → implemented in test/research-ai.test.js.

How to verify in under 5 minutes

cd ai-assisted-research-tools
npm test
npm start

Open http://localhost:4128 and verify the dashboard shows the manuscript profile, three summary modes, peer review findings, citation recommendations, and style switching.

Optional API smoke checks:

curl -s http://localhost:4128/api/dashboard
curl -s "http://localhost:4128/api/summarize?mode=layperson"
curl -s "http://localhost:4128/api/citations?style=Nature"

Validation

Commands run:

• npm test - 4 tests passing
• curl -s http://localhost:4128/api/dashboard - returns manuscript title, 5 review issues, and 3 citation recommendations
• curl -i -s http://localhost:4128/package.json - returns 404 without crashing the server
• Browser demo verified at http://127.0.0.1:4128/: summarizer, peer review, and citation panels render with 0 console errors
• Browser controls verified: Layperson summary mode and MLA citation style update correctly with 0 console errors

Demo

• Static demo preview: ai-assisted-research-tools/docs/demo/ai-assisted-research-tools.svg
• Demo script: ai-assisted-research-tools/docs/demo-script.md

Scope

This PR is intentionally self-contained under ai-assisted-research-tools/ and avoids unrelated root-level changes except adding the module link to the root README.

[grantf04]

Added committed demo artifacts in c92dfca:

• Short demo video: https://github.com/grantf04/SCIBASE.AI/blob/c92dfcab4472e5470d793adace2769eaa60ce6ee/ai-assisted-research-tools/docs/demo/ai-assisted-research-tools-demo.mp4
• Screenshot: https://github.com/grantf04/SCIBASE.AI/blob/c92dfcab4472e5470d793adace2769eaa60ce6ee/ai-assisted-research-tools/docs/demo/dashboard.png

Also reran npm test (4 passing) and verified the MP4 metadata with ffprobe (1280x760, 8 seconds).