Remove all Paris branding references

Journal is online-only; removed "gathered in Paris" from footer and
imprint, "· Paris" from logo tagline and 404 colophon, and the Paris
span from the header nav. Post content (paris-bridge-crimson-dusk)
left untouched as that refers to the photograph subject.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

layouts/partials/logo.html

@@ -34,5 +34,5 @@
     <circle cx="32" cy="31.4" r="1.2" fill="#c0573c" opacity=".7"/>
   </svg>
   <span class="font-display font-normal text-[30px] leading-none tracking-[.045em] text-ink max-[620px]:text-[22px]">Roux</span>
-  <span class="font-sans font-medium text-[8.5px] leading-none tracking-[.32em] uppercase text-ink-soft max-[620px]:text-[7.5px] max-[620px]:tracking-[.28em]">Le Journal · Paris</span>
+  <span class="font-sans font-medium text-[8.5px] leading-none tracking-[.32em] uppercase text-ink-soft max-[620px]:text-[7.5px] max-[620px]:tracking-[.28em]">Le Journal</span>
 </span>