Publish topic guides to the wiki and document tabbed windows

Publish the guides from this repository to the GitHub Wiki. Organize them into Usage, Configuration and Development, with 15 separate configuration topics and redirects for the former website guide URLs.

Add a tabbed-windows guide covering grouping, switching tabs and taking windows out. Document the scrolling indicator's defaults and limits, and link the guide from the README, shortcuts and IPC pages. Update from main, including the latest tabbed-layout changes.

Separate Activities setup, configuration and publishing documentation. Review the guide prose with the unslop skill, keeping existing examples and heading links. The wiki workflow uses GitHub's built-in token to publish documentation changes on main.

Validation:

- 20 documentation tests pass, including README links and Activities/tab-indicator field coverage.
- The publisher builds 46 wiki pages; the site build and Python syntax checks pass.
- All 115 code examples from main are preserved.
- The Python suite passes: 90 tests passed and 31 opt-in integration tests skipped, with the system GI module available.

site/index.html

@@ -28,15 +28,15 @@
   <header class="site-header">
     <div class="header-inner page-width">
       <a class="brand" href="#main" aria-label="Ferese home"><img src="assets/branding/ferese.svg" width="34" height="34" alt=""><span>Ferese</span></a>
-      <nav aria-label="Main navigation"><a href="#make-room">The desktop</a><a href="#appearance">Appearance</a><a href="docs/">Handbook</a></nav>
-      <div class="header-actions"><a class="small-button" href="docs/installation.html">Get Ferese</a></div>
+      <nav aria-label="Main navigation"><a href="#make-room">The desktop</a><a href="#appearance">Appearance</a><a href="https://github.com/ferese-wm/ferese/wiki">Documentation</a></nav>
+      <div class="header-actions"><a class="small-button" href="https://github.com/ferese-wm/ferese/wiki/Installation">Get Ferese</a></div>
     </div>
   </header>
   <main id="main">
     <section class="hero page-width" aria-labelledby="hero-title">
       <h1 id="hero-title">A little more room.</h1>
       <p class="hero-description">A configurable Wayland desktop for Linux that brings your windows and everyday controls together.</p>
-      <div class="hero-actions"><a class="primary-button" href="docs/installation.html">Get Ferese <svg class="icon"><use href="#i-arrow"/></svg></a><a class="inline-link" href="#desktop-preview">Take a look <svg class="icon down"><use href="#i-arrow"/></svg></a></div>
+      <div class="hero-actions"><a class="primary-button" href="https://github.com/ferese-wm/ferese/wiki/Installation">Get Ferese <svg class="icon"><use href="#i-arrow"/></svg></a><a class="inline-link" href="#desktop-preview">Take a look <svg class="icon down"><use href="#i-arrow"/></svg></a></div>
       <div class="desktop-stage" id="desktop-preview">
         <div class="desktop-capture" id="desktop-capture">
           <img id="desktop-capture-image" src="assets/screenshots/ferese-media.webp" srcset="assets/screenshots/ferese-media-960.webp 960w, assets/screenshots/ferese-media-1440.webp 1440w, assets/screenshots/ferese-media.webp 2880w" sizes="(max-width: 700px) calc(100vw - 40px), (max-width: 1200px) calc(100vw - 80px), 1120px" width="2880" height="1800" alt="The Ferese desktop with a translucent Now Playing popup showing Spotify artwork and playback controls over the blue and violet city wallpaper." fetchpriority="high">
@@ -61,9 +61,9 @@
         <h3>A little closer to your music.</h3><p>See what's playing and pause or skip a track, right from your panel.</p>
       </article>
     </section>
-    <div class="gallery-link page-width"><a class="inline-link" href="docs/screenshots.html">See all desktop screenshots <svg class="icon"><use href="#i-arrow"/></svg></a></div>
-    <section class="start-section page-width" aria-labelledby="start-title"><img class="start-logo" src="assets/branding/ferese.svg" width="74" height="74" alt=""><h2 id="start-title">Make yourself at home.</h2><p>Try Ferese in a nested session, or install it as your next desktop.</p><div class="hero-actions"><a class="primary-button" href="docs/installation.html">Get Ferese <svg class="icon"><use href="#i-arrow"/></svg></a><a class="inline-link" href="https://github.com/ferese-wm/ferese">Explore the source <svg class="icon"><use href="#i-external"/></svg></a></div></section>
+    <div class="gallery-link page-width"><a class="inline-link" href="https://github.com/ferese-wm/ferese/wiki/Screenshots">See all desktop screenshots <svg class="icon"><use href="#i-arrow"/></svg></a></div>
+    <section class="start-section page-width" aria-labelledby="start-title"><img class="start-logo" src="assets/branding/ferese.svg" width="74" height="74" alt=""><h2 id="start-title">Make yourself at home.</h2><p>Try Ferese in a nested session, or install it as your next desktop.</p><div class="hero-actions"><a class="primary-button" href="https://github.com/ferese-wm/ferese/wiki/Installation">Get Ferese <svg class="icon"><use href="#i-arrow"/></svg></a><a class="inline-link" href="https://github.com/ferese-wm/ferese">Explore the source <svg class="icon"><use href="#i-external"/></svg></a></div></section>
   </main>
-  <footer class="site-footer page-width"><a class="brand" href="#main" aria-label="Ferese home"><img src="assets/branding/ferese.svg" width="28" height="28" alt=""><span>Ferese</span></a><span>Built in the open for Linux.</span><nav aria-label="Footer navigation"><a href="docs/">Handbook</a><a href="https://github.com/ferese-wm/ferese">GitHub <svg class="icon"><use href="#i-external"/></svg></a></nav></footer>
+  <footer class="site-footer page-width"><a class="brand" href="#main" aria-label="Ferese home"><img src="assets/branding/ferese.svg" width="28" height="28" alt=""><span>Ferese</span></a><span>Built in the open for Linux.</span><nav aria-label="Footer navigation"><a href="https://github.com/ferese-wm/ferese/wiki">Documentation</a><a href="https://github.com/ferese-wm/ferese">GitHub <svg class="icon"><use href="#i-external"/></svg></a></nav></footer>
 </body>
 </html>