feat: rename repo to Beaujol-Bus-Lab, go public

The user picked a proper name for the project repo. Rename on Gitea
(electron-rare/Beaujol-Bus-Lab), flip visibility to public now that
the privacy pass removed face photos and the seller ad screenshot,
and update every reference: local remote URL, CLAUDE.md git section,
blog about page and nav link. Add the missing hero image CSS rule.

blog/content/a-propos.md

@@ -11,6 +11,6 @@ douche, 9 places, et un objectif VASP au bout de 5 ans.
 
 Tout le projet est versionné — docs techniques, suivi de poids,
 schémas, journal de chantier et ce blog lui-même :
-[git.saillant.cc/electron-rare/bus-axer](https://git.saillant.cc/electron-rare/bus-axer)
+[git.saillant.cc/electron-rare/Beaujol-Bus-Lab](https://git.saillant.cc/electron-rare/Beaujol-Bus-Lab)
 
 Contact : clement@saillant.cc

blog/themes/terminal-bus/layouts/baseof.html

@@ -20,7 +20,7 @@
     <span class="prompt">{{ site.Params.prompt }}:~$</span>
     <a href="{{ "/" | relURL }}">ls posts/</a>
     <a href="{{ "/a-propos/" | relURL }}">cat a-propos.md</a>
-    <a href="https://git.saillant.cc/electron-rare/bus-axer">git clone</a>
+    <a href="https://git.saillant.cc/electron-rare/Beaujol-Bus-Lab">git clone</a>
   </nav>
 </header>
 <main>

blog/themes/terminal-bus/static/css/terminal.css

@@ -42,3 +42,4 @@ th, td { border: 1px solid var(--border); padding: 0.3em 1ch;
   text-align: left; }
 hr { border: 0; border-top: 1px dashed var(--border); }
 footer { margin-top: 4rem; color: var(--dim); font-size: 0.85em; }
+.hero { display: block; width: 100%; margin: 1.5rem 0; }