feat: English version of the site, CV as text

- add English language: config, menus, i18n, translations of all pages and posts
- CV page renders the full resume in both languages with PDF download buttons
- remove salary from CV PDFs, Telegram is @xs0k0lx everywhere, English level B2
- fix broken CV menu link, update theme submodule to Public/blowfish

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

config/_default/menus.en.toml

@@ -0,0 +1,17 @@
+# -- Main Menu --
+# See menus.ru.toml for the parameter reference.
+
+[[main]]
+  name = "Blog"
+  pageRef = "blog"
+  weight = 10
+
+[[main]]
+  name = "About"
+  pageRef = "about"
+  weight = 20
+
+[[main]]
+  name = "CV"
+  pageRef = "cv"
+  weight = 30