import type { Metadata } from "next";
import { Breadcrumbs } from "@/components/breadcrumbs";
export const metadata: Metadata = { title: "About, method and sourcing policy", description: "How tools.spboucher.ai researches, verifies and maintains its records; what is and is not claimed; how to report an error.", alternates: { canonical: "/about" } };
export default function About() {
  return (
    <div className="mx-auto max-w-3xl px-4 py-8 sm:px-6">
      <Breadcrumbs items={[{ label: "About" }]} />
      <h1 className="display h1 mt-3">About this encyclopedia</h1>
      <div className="prose-tool mt-6 space-y-4">
        <p>Tools · SPBoucher is an independent reference work maintained by Simon-Pierre Boucher, an economist and professor working on financial econometrics, real-estate valuation and applied AI. It documents the software, AI systems, data services and research tools encountered in that work, written for readers who need to decide quickly whether a tool fits a job.</p>
        <h2 className="display h2 !mt-8">Method</h2>
        <p>Every record is researched from primary sources: the official site, official documentation, the source repository, and the vendor&apos;s license, pricing and policy pages. Third-party directories are used only to discover candidates, never as evidence. Descriptions are original editorial prose; nothing is copied from vendor marketing.</p>
        <p>Each record carries a confidence level, a list of the sources that support it, the date each source was checked, and an automated link-verification status. Where something could not be verified, the record says so in an explicit uncertainty note rather than guessing.</p>
        <h2 className="display h2 !mt-8">What we deliberately do not claim</h2>
        <ul>
          <li><strong>Prices.</strong> Only the pricing <em>model</em> is recorded (free, freemium, paid, usage-based, enterprise, academic). Prices change too often to be trustworthy in an encyclopedia; the official pricing page is linked instead.</li>
          <li><strong>Certifications and privacy guarantees.</strong> Statements about security attestations or data residency appear only when a vendor policy page is cited.</li>
          <li><strong>Benchmark wins.</strong> Comparisons describe documented differences in architecture, license, hosting model and ecosystem, not unmeasured performance claims.</li>
        </ul>
        <h2 className="display h2 !mt-8">Independence</h2>
        <p>There are no affiliate links, sponsored placements or paid listings. Featured entries reflect editorial judgement about centrality to a category. Product names and trademarks belong to their owners; the site uses neutral monograms instead of vendor logos.</p>
        <h2 className="display h2 !mt-8" id="corrections">Corrections and suggestions</h2>
        <p>Every tool page has a “Spotted an error?” form. Reports are reviewed by the editor, who corrects the record and re-verifies its sources. To suggest a missing tool, use the same form on any related tool page and describe the tool and its official site.</p>
        <h2 className="display h2 !mt-8">Technology</h2>
        <p>The site runs on PostgreSQL (full-text and trigram search, optional vector search) and Next.js, hosted on the MacLustr Apple Silicon cluster and published through a WireGuard tunnel with automatic TLS. Public pages read from a database role that can only see published records.</p>
      </div>
    </div>
  );
}