Make the resume bilingual and part of the shared site chrome

Adds a Russian version (data/resume.ru.json, default language) with an RU/EN
switch stored under the key shared with the front page and the portfolio.
The top bar becomes the site-wide one (brand, Resume, Portfolio, Gitea,
Contact, language, theme) with a second row of anchors for this page's
sections, and the fonts move to Unbounded and Onest so the three pages share
one type system. Portfolio links now point at /portfolio/.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XtcZtnG4GQA1d6mW5PNrS9

components/gizmo.module.css

@@ -1,7 +1,7 @@
 .gizmo {
   position: fixed;
   z-index: 40;
-  top: 84px;
+  top: 128px;
   right: max(16px, calc((100vw - 1240px) / 2 - 8px));
   width: 88px;
   height: 88px;