Give RED THREADS Pages a working investigation front door

.gitattributes

@@ -15,3 +15,4 @@
 *.ico binary
 *.webp binary
 *.mp4 binary
+*.ttf binary

.github/workflows/test.yml

@@ -23,4 +23,6 @@ jobs:
       - name: Build release from source
         run: python -B tools/build_release.py
       - name: Check public site links and fictional demo parity
-        run: python -B tools/check_site.py
+        run: python -B tools/check_site.py
+      - name: Exercise homepage evidence selection and fallback
+        run: node tools/test_evidence_board.cjs

docs/assets/evidence-board.js

@@ -0,0 +1,127 @@
+(function (root, factory) {
+  'use strict';
+  const api = factory();
+  if (typeof module === 'object' && module.exports) module.exports = api;
+  if (root && root.document) {
+    const document = root.document;
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', function () {
+        api.initEvidenceBoard(document);
+      }, { once: true });
+    } else {
+      api.initEvidenceBoard(document);
+    }
+  }
+}(typeof globalThis !== 'undefined' ? globalThis : this, function () {
+  'use strict';
+
+  const records = Object.freeze({
+    award: Object.freeze({
+      id: 'award',
+      edge: 'e-grant',
+      nodes: Object.freeze(['cobalt', 'meridian']),
+      announcement: 'The award notice: Cobalt Foundation awarded a research grant to Meridian Institute.'
+    }),
+    agreement: Object.freeze({
+      id: 'agreement',
+      edge: 'e-approval',
+      nodes: Object.freeze(['cobalt', 'brief']),
+      announcement: 'The signed agreement: Cobalt Foundation holds approval rights over the funded policy brief.'
+    }),
+    revision: Object.freeze({
+      id: 'revision',
+      edge: 'e-leo-revisions',
+      nodes: Object.freeze(['leo', 'brief']),
+      announcement: 'The revision register: Leo Venn requested in-scope revisions to the funded policy brief.'
+    })
+  });
+  const edgeIds = ['e-grant', 'e-approval', 'e-leo-revisions', 'e-direction'];
+  const nodeIds = ['cobalt', 'meridian', 'leo', 'brief', 'astera'];
+  const controllers = new WeakMap();
+
+  function getRecord(id) {
+    return typeof id === 'string' && Object.prototype.hasOwnProperty.call(records, id)
+      ? records[id] : null;
+  }
+
+  function unique(scope, selector) {
+    const matches = scope.querySelectorAll(selector);
+    return matches.length === 1 ? matches[0] : null;
+  }
+
+  function initEvidenceBoard(document) {
+    if (!document || typeof document.querySelectorAll !== 'function') return null;
+    const board = unique(document, '#evidence-board');
+    if (!board) return null;
+    if (controllers.has(board)) return controllers.get(board);
+
+    // Resolve the whole contract before changing the readable HTML fallback.
+    const controls = unique(board, '[data-record-controls]');
+    const announcement = unique(board, '[data-record-announcement]');
+    if (!controls || !announcement) return null;
+    const entries = Object.keys(records).map(function (id) {
+      return {
+        record: records[id],
+        article: unique(board, '[data-record="' + id + '"]'),
+        button: unique(controls, '[data-select-record="' + id + '"]')
+      };
+    });
+    const edges = edgeIds.map(function (id) {
+      return { id: id, element: unique(board, '[data-edge="' + id + '"]') };
+    });
+    const nodes = nodeIds.map(function (id) {
+      return { id: id, element: unique(board, '[data-node="' + id + '"]') };
+    });
+    const validEntries = entries.every(function (entry) {
+      return entry.article && entry.button &&
+        entry.article.tagName.toLowerCase() === 'article' &&
+        entry.button.tagName.toLowerCase() === 'button' &&
+        entry.article.id === 'record-' + entry.record.id &&
+        entry.button.getAttribute('aria-controls') === entry.article.id;
+    });
+    if (!validEntries || !edges.every(function (edge) { return edge.element; }) ||
+        !nodes.every(function (node) { return node.element; }) ||
+        board.querySelectorAll('[data-record]').length !== entries.length ||
+        controls.querySelectorAll('[data-select-record]').length !== entries.length ||
+        announcement.getAttribute('role') !== 'status' ||
+        announcement.getAttribute('aria-live') !== 'polite' ||
+        entries.some(function (entry) { return entry.article.contains(announcement); })) return null;
+
+    let selectedId = null;
+    function select(id, fromUser) {
+      const record = getRecord(id);
+      if (!record) return false;
+      if (selectedId === id) return true;
+      entries.forEach(function (entry) {
+        const active = entry.record.id === id;
+        entry.article.hidden = !active;
+        entry.button.setAttribute('aria-pressed', String(active));
+      });
+      edges.forEach(function (edge) {
+        edge.element.classList.toggle('is-active', edge.id === record.edge);
+      });
+      nodes.forEach(function (node) {
+        node.element.classList.toggle('is-active', record.nodes.indexOf(node.id) !== -1);
+      });
+      selectedId = id;
+      if (fromUser) announcement.textContent = record.announcement;
+      return true;
+    }
+
+    entries.forEach(function (entry) {
+      // Native button activation supplies keyboard behavior and retains focus.
+      entry.button.addEventListener('click', function () { select(entry.record.id, true); });
+    });
+    select('award', false);
+    board.classList.add('is-enhanced');
+    controls.hidden = false;
+    const controller = Object.freeze({
+      select: function (id) { return select(id, false); },
+      get selectedId() { return selectedId; }
+    });
+    controllers.set(board, controller);
+    return controller;
+  }
+
+  return Object.freeze({ getRecord: getRecord, initEvidenceBoard: initEvidenceBoard });
+}));

docs/assets/fonts/OFL-Barlow-Condensed.txt

@@ -0,0 +1,93 @@
+Copyright 2017 The Barlow Project Authors (https://github.com/jpt/barlow)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

docs/assets/fonts/OFL-Bebas-Neue.txt

@@ -0,0 +1,93 @@
+Copyright © 2010 by Dharma Type.
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

docs/assets/fonts/README.md

@@ -0,0 +1,30 @@
+# Self-hosted fonts
+
+RED THREADS serves these fonts locally. They are original, unmodified TTF files from the official [Google Fonts repository](https://github.com/google/fonts/tree/5e35378e6bda803962ee6fd257e444a7d459660d), downloaded on 2026-09-08. No font service is contacted at runtime.
+
+| Font | Use | Version | Weight | Size | Source | License notice |
+| --- | --- | --- | --- | --- | --- | --- |
+| Bebas Neue Regular | Display lettering | 2.000 | 400 | 61,400 bytes | [Original TTF](https://github.com/google/fonts/blob/5e35378e6bda803962ee6fd257e444a7d459660d/ofl/bebasneue/BebasNeue-Regular.ttf) | [OFL-Bebas-Neue.txt](OFL-Bebas-Neue.txt) |
+| Barlow Condensed SemiBold | Headings | 1.408 | 600 | 109,428 bytes | [Original TTF](https://github.com/google/fonts/blob/5e35378e6bda803962ee6fd257e444a7d459660d/ofl/barlowcondensed/BarlowCondensed-SemiBold.ttf) | [OFL-Barlow-Condensed.txt](OFL-Barlow-Condensed.txt) |
+
+Both families use the SIL Open Font License 1.1. The full upstream copyright and license notices accompany the fonts with their wording preserved (line endings and trailing whitespace normalized), from [Bebas Neue's OFL.txt](https://github.com/google/fonts/blob/5e35378e6bda803962ee6fd257e444a7d459660d/ofl/bebasneue/OFL.txt) and [Barlow Condensed's OFL.txt](https://github.com/google/fonts/blob/5e35378e6bda803962ee6fd257e444a7d459660d/ofl/barlowcondensed/OFL.txt). Font metadata, names, glyphs, and embedded copyright notices are preserved. These font licenses remain separate from the surrounding project's license.
+
+The TTF files retain the upstream character coverage. No local font installation, external stylesheet, or conversion is required. For CSS in `docs/assets/site.css`, use:
+
+```css
+@font-face {
+  font-family: "Bebas Neue";
+  src: url("./fonts/BebasNeue-Regular.ttf") format("truetype");
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: "Barlow Condensed";
+  src: url("./fonts/BarlowCondensed-SemiBold.ttf") format("truetype");
+  font-style: normal;
+  font-weight: 600;
+  font-display: swap;
+}
+```