refactor(content): slim homelab to highlight, trim redundant timeline entries

Homelab: drop VLAN table, services list, and ADRs — full docs live in
the homelab repo. Keep condensed at-a-glance stats, category counts,
and Gitea link.

Timeline: drop project entries (covered by Projects section),
lerkolabs.com (duplicate of portfolio), and PC Build. 14 → 9 entries.

Also: hide nav anchor links on mobile, drop Hero section anchors,
update meta description, add print stylesheet.

src/components/Hero.astro

@@ -42,10 +42,4 @@
       Email
     </a>
   </nav>
-
-  <nav class="flex flex-wrap items-center gap-x-2ch gap-y-half-lh text-[var(--color-text-dim)] mt-half-lh">
-    <a href="#projects" class="underline hover:text-[var(--color-text)]">Projects</a>
-    <a href="#journey" class="underline hover:text-[var(--color-text)]">Journey</a>
-    <a href="#homelab" class="underline hover:text-[var(--color-text)]">Homelab</a>
-  </nav>
 </section>