Add Scholar Sidekick API

[mlava]

Summary

Adds Scholar Sidekick to the Science & Math category in db/resources.json.

Scholar Sidekick is a free citation resolver: it takes scholarly identifiers (DOI, PMID, PMCID, ISBN, ISSN, arXiv ID, ADS bibcode, WHO IRIS URL) and returns formatted citations in 10,000+ CSL styles, plus bibliographic exports (BibTeX, RIS, CSV, EndNote XML, Zotero RDF, MEDLINE, CSL JSON).

• Live API: https://scholar-sidekick.com
• Documentation (server-rendered markdown): https://scholar-sidekick.com/docs.md
• Health endpoint: https://scholar-sidekick.com/api/health
• HTML docs: https://scholar-sidekick.com/docs

Notes

• HTTPS only.
• CORS open (access-control-allow-origin: *) — usable directly from browsers.
• Anonymous tier is rate-limited but free; higher tiers are available via RapidAPI (hence Pricing: freemium).
• An earlier submission via findapis.com was auto-rejected because its fetcher landed on the HTML /docs page (client-rendered Next.js, head-only on first response). This PR points the documentation link at https://scholar-sidekick.com/docs.md, which is fully server-rendered with endpoints, parameters, headers, and examples.

Entry

{
  "API Name": "Scholar Sidekick",
  "Description": "Resolves scholarly identifiers (DOI, PMID, ISBN, arXiv, ADS) to formatted citations and exports.",
  "Auth": "No",
  "HTTPS": true,
  "Cors": "yes",
  "Documentation Link": "https://scholar-sidekick.com/docs.md",
  "Category": "Science & Math",
  "Pricing": "freemium"
}

Inserted alphabetically between Schmap and School Loop High Priority Groups. count bumped 15518 → 15519.

Test plan

• jq '.count, (.entries | length)' returns 15519 / 15519 (match)
• Entry placed in correct alphabetical position (Schmap → Scholar Sidekick → School Loop)
• Documentation Link returns 200 with substantive server-rendered content
• Category is valid (Science & Math)
• Description ≤ 100 chars (96)
• API name does not end in "API" and does not include TLD

[mlava]

Heads up — the pr-review-automation failure looks like a workflow issue rather than something specific to this PR.

The step npm install @actions/github pulls the latest major without a version pin. Recent releases of @actions/github ship an ESM-only exports map, but scripts/pr-review-automation.js uses CommonJS require(...), so resolution fails on Node 20 with ERR_PACKAGE_PATH_NOT_EXPORTED.

Two ways to unblock:

1. Pin to the last CJS-friendly major in .github/workflows/pr-review-automation.yml:

   run: npm install @actions/github@5

2. Or convert scripts/pr-review-automation.js to ESM (import { context, getOctokit } from '@actions/github').

Happy to open a follow-up PR with option 1 if it would help.