i18n(ru): improve Russian localization quality and natural phrasing

[yearningss]

Summary of Changes

This Pull Request updates and refines the Russian translation file (ru.json) to deliver a high-quality, native-sounding localization.

• Grammar & Style Fixes: Corrected machine-translation artifacts, awkward calques, missing prepositions, and improper capitalization (e.g., standardized theme names and button labels).
• Terminological Consistency: Unified networking terms throughout the UI (e.g., using proper Russian equivalents for Diversion Rules, Profile, Outbound, and Proxy Server).
• Clarity & Readability: Improved overall wording of complex technical tooltips and error messages to make them clear and intuitive for users without altering the technical meaning.
• Integrity: Fully preserved all JSON keys, interpolation parameters ($p, $p1, $sp, etc.), and internal schema references (@:{...}).

[felowctl]

Hi! As a native Russian speaker, I would like to highlight that most changes in this PR
either break the meaning of features or just change the wording structure, which
definitely was not needed. Also, the PR was obviously fully written by AI.

For example,

• SettingsScreen.getTranffic is changed from "Получить трафик" to "Проверить остаток
  трафика", which is fundamentally wrong, because the option does not "check the
  remaining traffic", but redirects you to a page where Karing suggests proxy providers.

• meta.connect is changed from "Соединения" to "Подключить", which is wrong, because
  meta.connect is used as a noun and was specifically fixed in Update ru.i18n.json #1776

• Many labels became way more verbose than they were (which is not needed):

  • SettingsScreen.wakeLock: "Блокировка засыпания" -> "Запретить переход системы в
    спящий режим (Wake Lock)"
  • SettingsScreen.tunStack: "Stack" -> "Стек сетевого протокола"
  • SettingsScreen.tutorial: "Руководство" -> "Инструкция и руководство"
  • meta.diversionCustomGroup: "Личные правила" -> "Персональная группа маршрутизации"
  • and many others

Generally speaking, this PR is very poorly made AI slop that mostly does not improve the
translation, but rather makes it sound awkward and, in some cases, incorrect.

P.S. Hyphens in the text have also been replaced with em dashes, which makes it clear
that the translation was made by AI.