feat: publish versioned data exports

The metadata behind the verifier, the pack builder and the site is now
served as static files: a versioned JSON API, CSV extracts, a SQLite
snapshot, and a catalog carrying a SHA-256 for each artifact.

The gaps dataset covers both layers behind a layer column. It previously
held one row, the single platform-verification anomaly, while the page
offering it as a download led with the emulator-level count.

source_ref renders as a permalink pinned to the revision the profile
cites. When a profile declares two repositories, a path that belongs to
neither by name is left as plain code: a citation without a link still
names the file and the lines, a link to the wrong repository does not.

The table filter, focus outlines and tap targets are progressive
enhancement; the pages work without them.

docs_assets/extra.css

@@ -5,7 +5,8 @@
   --rb-primary: #4a4e8a;
   --rb-primary-light: #6366a0;
   --rb-primary-dark: #363870;
-  --rb-accent: #e8594f;
+  --rb-accent: #b42318;
+  --rb-link: #273c8f;
   --rb-success: #2e7d32;
   --rb-warning: #f57c00;
   --rb-danger: #c62828;
@@ -20,6 +21,8 @@
   --rb-surface: #1e1e2e;
   --rb-border: #313244;
   --rb-text-secondary: #a6adc8;
+  --rb-accent: #ff9a8f;
+  --rb-link: #aebcff;
 }
 
 /* ── Material theme overrides ── */
@@ -509,7 +512,8 @@
 /* Pack button in tables: smaller */
 .md-typeset table .md-button {
   font-size: 0.75rem;
-  padding: 0.3em 0.8em;
+  min-height: 44px;
+  padding: 0.55em 0.8em;
 }
 
 /* ── Hide permalink anchors in hero ── */
@@ -576,3 +580,107 @@
     font-size: 1.3rem;
   }
 }
+
+/* ── Accessibility and dense-data navigation ── */
+.md-typeset a:not(.md-button):not(.headerlink):not(.rb-badge) {
+  color: var(--rb-link);
+  text-decoration: underline;
+  text-decoration-thickness: 0.08em;
+  text-underline-offset: 0.14em;
+}
+
+.md-typeset a:not(.md-button):not(.headerlink):hover {
+  text-decoration-thickness: 0.14em;
+}
+
+:where(a, button, input, select, textarea, [tabindex]):focus-visible {
+  outline: 3px solid var(--rb-accent);
+  outline-offset: 3px;
+}
+
+.md-typeset .md-button,
+.md-typeset button,
+.md-typeset input,
+.md-typeset select {
+  min-height: 44px;
+}
+
+.rb-visually-hidden {
+  position: absolute !important;
+  width: 1px !important;
+  height: 1px !important;
+  padding: 0 !important;
+  margin: -1px !important;
+  overflow: hidden !important;
+  clip: rect(0, 0, 0, 0) !important;
+  white-space: nowrap !important;
+  border: 0 !important;
+}
+
+.rb-table-filter {
+  display: grid;
+  grid-template-columns: minmax(14rem, 28rem) auto;
+  gap: 0.35rem 0.8rem;
+  align-items: end;
+  margin: 1rem 0 0.45rem;
+}
+
+.rb-table-filter label {
+  grid-column: 1 / -1;
+  color: var(--rb-text-secondary);
+  font-size: 0.78rem;
+  font-weight: 700;
+}
+
+.rb-table-filter input {
+  width: 100%;
+  border: 2px solid var(--rb-border);
+  border-radius: 6px;
+  background: var(--md-default-bg-color);
+  color: var(--md-default-fg-color);
+  padding: 0.55rem 0.75rem;
+  font: inherit;
+}
+
+.rb-table-filter-count {
+  align-self: center;
+  color: var(--rb-text-secondary);
+  font-size: 0.8rem;
+  white-space: nowrap;
+}
+
+.md-typeset__scrollwrap[role="region"]:focus-visible {
+  border-radius: 8px;
+  outline: 3px solid var(--rb-accent);
+  outline-offset: 2px;
+}
+
+/* Material's compact footer defaults sit just below WCAG AA on the dark bar. */
+.md-footer-meta .md-copyright {
+  color: #b5b5b5;
+}
+
+.md-footer-meta.md-typeset .md-copyright a {
+  color: #b8c6ff !important;
+}
+
+@media (max-width: 600px) {
+  .rb-table-filter {
+    grid-template-columns: 1fr;
+  }
+
+  .rb-table-filter label {
+    grid-column: auto;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    transition-duration: 0.01ms !important;
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+  }
+}

docs_assets/site.js

@@ -0,0 +1,110 @@
+/* Progressive enhancement for generated RetroBIOS reference tables. */
+(() => {
+  "use strict";
+
+  const textFromHeading = (element) => {
+    let cursor = element;
+    while (cursor) {
+      cursor = cursor.previousElementSibling;
+      if (!cursor) break;
+      if (/^H[1-6]$/.test(cursor.tagName)) {
+        return cursor.textContent.trim();
+      }
+    }
+    return document.querySelector("h1")?.textContent.trim() || "Data table";
+  };
+
+  const enhanceTables = () => {
+    document.querySelectorAll(".md-typeset table").forEach((table, index) => {
+      if (table.dataset.rbEnhanced === "true") return;
+      table.dataset.rbEnhanced = "true";
+
+      table.querySelectorAll("thead th").forEach((cell) => {
+        if (!cell.hasAttribute("scope")) cell.setAttribute("scope", "col");
+      });
+      table.querySelectorAll("tbody tr").forEach((row) => {
+        const first = row.querySelector(":scope > th");
+        if (first && !first.hasAttribute("scope")) first.setAttribute("scope", "row");
+      });
+
+      const container = table.parentElement;
+      const heading = textFromHeading(container);
+      if (!table.querySelector("caption")) {
+        const caption = document.createElement("caption");
+        caption.className = "rb-visually-hidden";
+        caption.textContent = heading;
+        table.prepend(caption);
+      }
+      if (container && container.scrollWidth > container.clientWidth) {
+        container.tabIndex = 0;
+        container.setAttribute("role", "region");
+        container.setAttribute("aria-label", `${heading}, scrollable table`);
+      }
+
+      const rows = Array.from(table.querySelectorAll("tbody tr"));
+      if (rows.length < 20 || !container || container.dataset.rbFilter === "true") {
+        return;
+      }
+      container.dataset.rbFilter = "true";
+
+      const controls = document.createElement("div");
+      controls.className = "rb-table-filter";
+      const id = `rb-table-filter-${index}-${Math.random().toString(36).slice(2, 8)}`;
+      const label = document.createElement("label");
+      label.htmlFor = id;
+      label.textContent = `Filter ${heading}`;
+      const input = document.createElement("input");
+      input.id = id;
+      input.type = "search";
+      input.autocomplete = "off";
+      input.placeholder = "Name, platform, system, hash...";
+      const count = document.createElement("span");
+      count.className = "rb-table-filter-count";
+      count.setAttribute("aria-live", "polite");
+      count.textContent = `${rows.length} rows`;
+      controls.append(label, input, count);
+      container.before(controls);
+
+      const searchable = rows.map((row) => ({
+        row,
+        text: row.textContent.normalize("NFKD").toLocaleLowerCase(),
+      }));
+      input.addEventListener("input", () => {
+        const query = input.value.trim().normalize("NFKD").toLocaleLowerCase();
+        let visible = 0;
+        searchable.forEach((entry) => {
+          const matches = !query || entry.text.includes(query);
+          entry.row.hidden = !matches;
+          if (matches) visible += 1;
+        });
+        count.textContent = `${visible} of ${rows.length} rows`;
+      });
+    });
+  };
+
+  const nameMaterialWidgets = () => {
+    document.querySelectorAll('[role="dialog"]').forEach((dialog) => {
+      if (dialog.hasAttribute("aria-label") || dialog.hasAttribute("aria-labelledby")) return;
+      const heading = dialog.querySelector("h1, h2, h3");
+      dialog.setAttribute("aria-label", heading?.textContent.trim() || "Site search");
+    });
+    document.querySelectorAll('[role="progressbar"]').forEach((progress) => {
+      if (!progress.hasAttribute("aria-label") && !progress.hasAttribute("aria-labelledby")) {
+        progress.setAttribute("aria-label", "Loading page");
+      }
+    });
+  };
+
+  const enhance = () => {
+    enhanceTables();
+    nameMaterialWidgets();
+  };
+
+  if (window.document$?.subscribe) {
+    window.document$.subscribe(enhance);
+  } else if (document.readyState === "loading") {
+    document.addEventListener("DOMContentLoaded", enhance, { once: true });
+  } else {
+    enhance();
+  }
+})();