Add a /videos/ page with click-to-load explainer videos

site/fonts/OFL-big-shoulders-display.txt

@@ -0,0 +1,93 @@
+Copyright 2019 The Big Shoulders Project Authors (https://github.com/xotypeco/big_shoulders)
+
+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.

site/fonts/OFL-jetbrains-mono.txt

@@ -0,0 +1,93 @@
+Copyright 2020 The JetBrains Mono Project Authors (https://github.com/JetBrains/JetBrainsMono)
+
+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: https://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.

site/fonts/fonts.css

@@ -0,0 +1,17 @@
+/* The site's faces, served from thirdshift.app rather than Google Fonts, for pages that must
+   request nothing from Google. Latin subsets as Google Fonts serves them; both are under the
+   SIL Open Font License 1.1 (the OFL-*.txt files beside them). JetBrains Mono is variable. */
+@font-face {
+  font-family: "Big Shoulders Display";
+  font-style: normal;
+  font-weight: 800;
+  font-display: swap;
+  src: url("/fonts/big-shoulders-display-800-latin.woff2") format("woff2");
+}
+@font-face {
+  font-family: "JetBrains Mono";
+  font-style: normal;
+  font-weight: 400 700;
+  font-display: swap;
+  src: url("/fonts/jetbrains-mono-latin.woff2") format("woff2");
+}

site/how-it-works/index.html

@@ -31,7 +31,7 @@
 <header class="hero page-head">
   <div class="wrap">
     <div class="paper-sheet">
-      <nav class="guide-nav" aria-label="Site"><a href="/">thirdshift / home</a><a href="/prompts/">Prompts and skills</a><a href="https://github.com/JacobStephens2/thirdshift">GitHub</a></nav>
+      <nav class="guide-nav" aria-label="Site"><a href="/">thirdshift / home</a><a href="/prompts/">Prompts and skills</a><a href="/videos/">Videos</a><a href="https://github.com/JacobStephens2/thirdshift">GitHub</a></nav>
       <p class="eyebrow">An engineer's guide · from issue to pull request</p>
       <h1>How thirdshift works</h1>
       <p class="framing">You describe the work. thirdshift runs an unattended coding agent in its own Git checkout, asks it to implement and review the change, then checks the pull request against the repository's latest state. By default, you review before merging. A Merge run merges it when asked.</p>
@@ -193,14 +193,15 @@ <h1>How thirdshift works</h1>
         <p class="guide-connector">Eligible work ↓ Run or Spec run ↓ reviewed pull request</p>
       </figure>
       <p>Pickup respects issue readiness, open blockers and the Claim limit. Architect and Security runs yield to ready human-shaped work. Gates can skip a pass without failure, and unresolved plans, ideas or findings can leave the next decision with the Day shift. This is scheduled CLI work on your machine, using your authenticated tools.</p>
-      <p>Next: <a href="/prompts/">inspect every prompt and skill</a>, see <a href="/#how-a-run-works">a real Run's recorded output</a>, or use the <a href="/docs/">manual for installation, commands and configuration</a>.</p>
+      <p>Next: <a href="/prompts/">inspect every prompt and skill</a>, see <a href="/#how-a-run-works">a real Run's recorded output</a>, use the <a href="/docs/">manual for installation, commands and configuration</a>, or <a href="/videos/">watch the explainer videos</a>.</p>
       </div>
     </details>
   </section>
 </main>
 <footer class="wrap foot">
   <a href="/">thirdshift home</a>
   <a href="/prompts/">Prompts and skills</a>
+  <a href="/videos/">Videos</a>
   <a href="https://github.com/JacobStephens2/thirdshift">Source and documentation</a>
   <a href="#handoff">Back to the process ↑</a>
 </footer>

site/index.html

@@ -63,7 +63,7 @@ <h1 class="misreg">Your issues go to press overnight.</h1>
         <div class="proof-row">
           <div>
             <p class="framing">The humans are the <b>day shift</b>: you talk the idea through, write the spec and cut it into tickets. Coding agents work the <b>third shift</b>: give thirdshift a GitHub issue URL and it implements the issue, reviews its own work and delivers a pull request ready for review, or merges it when asked. Start a Run whenever you like, or let your operating system start passes on a schedule.</p>
-            <p class="credit"><a href="/how-it-works/">How thirdshift works</a>: an engineer's guide from issue to pull request, through Worktrees, agent review and Delivery. <a href="/docs/">Documentation</a> covers installation, commands and configuration.</p>
+            <p class="credit"><a href="/how-it-works/">How thirdshift works</a>: an engineer's guide from issue to pull request, through Worktrees, agent review and Delivery. <a href="/docs/">Documentation</a> covers installation, commands and configuration. <a href="/videos/">Videos</a> explain it in under four minutes.</p>
             <p class="credit">Built on Matt Pocock's skills: <a href="https://www.aihero.dev/skills">aihero.dev/skills</a> · <a href="https://github.com/mattpocock/skills">mattpocock/skills</a>. Read <a href="/prompts/">every prompt and skill thirdshift sends</a>.</p>
           </div>
           <div>
@@ -527,6 +527,7 @@ <h3><a href="https://github.com/JacobStephens2/thirdshift/pull/21">Numbered Issu
   <a href="/how-it-works/">How thirdshift works</a>
   <a href="/docs/">Documentation</a>
   <a href="/prompts/">Prompts and skills</a>
+  <a href="/videos/">Videos</a>
   <a href="https://github.com/JacobStephens2/thirdshift/blob/main/LICENSE">MIT License</a>
   <span>Factory skills adapted from <a href="https://github.com/mattpocock/skills">Matt Pocock's skills</a></span>
 </footer>

site/main.js

@@ -42,6 +42,35 @@ for (const button of document.querySelectorAll(".install button.copy")) {
   });
 }
 
+// The videos page: each thumbnail links to the video on YouTube, so it works without JavaScript.
+// Playing one swaps in YouTube's no-cookie player, so nothing is requested from YouTube or Google
+// until the reader asks for a video. A modified click still opens the link as usual.
+for (const link of document.querySelectorAll("a.video-play")) {
+  link.addEventListener("click", event => {
+    if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) return;
+    event.preventDefault();
+    playVideo(link);
+  });
+  // Space activates buttons, not links; a reader can't tell this link from a play button.
+  link.addEventListener("keydown", event => {
+    if (event.key !== " ") return;
+    event.preventDefault();
+    playVideo(link);
+  });
+}
+
+function playVideo(link) {
+  const id = new URL(link.href).pathname.slice(1);
+  const player = Object.assign(document.createElement("iframe"), {
+    src: `https://www.youtube-nocookie.com/embed/${encodeURIComponent(id)}?autoplay=1`,
+    title: link.closest(".video").querySelector("h2").textContent,
+    allow: "autoplay; encrypted-media; picture-in-picture; fullscreen",
+    allowFullscreen: true,
+  });
+  link.replaceWith(player);
+  player.focus();
+}
+
 // The Prompts and skills page's commit label: the commit of main the deploy
 // published, from the commit.txt it writes. Without one (e.g. served locally),
 // the label keeps its generic text.

site/sitemap.xml

@@ -4,4 +4,5 @@
   <url><loc>https://thirdshift.app/docs/</loc></url>
   <url><loc>https://thirdshift.app/how-it-works/</loc></url>
   <url><loc>https://thirdshift.app/prompts/</loc></url>
+  <url><loc>https://thirdshift.app/videos/</loc></url>
 </urlset>