feat: translate all English code blocks in localized READMEs

Translate 8 ASCII art code blocks (harness pattern diagram, subsystem
diagram, without/with harness comparison, project root tree, knowledge
base app diagram, learning path phases, project evolution, and agent
session lifecycle) across 11 languages: KO, JA, ZH-CN, ZH-TW, ES, FR,
DE, AR, VI, RU, UZ.

Also regenerate all 11 root-level READMEs from updated docs-readme versions.

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

Author: sanbuphy