Mirrors the recent main README changes across all 11 localized files
(JA, ZH, KO, ES, FR, DE, PT-BR, AR, BN, HI, RU) so the language switcher
and badge row stay consistent regardless of which translation a visitor
lands on.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Rebuilds the ASCII architecture diagram with a uniform 65-char interior
on every row so the outer border stays straight. Removes the broken
connector lines (┼ and trailing ││) that were misaligning the backend
and database rows.

- Main README: clean 4-database row with consistent box widths
- 8 localized READMEs (JA, ZH, KO, ES, FR, DE, PT-BR, AR): same fix,
  preserving the React Web / Flutter / REST + WS API labels they had
- 3 localized READMEs (HI, RU, BN): same fix, plus expanded the
  previously-truncated diagram to include the database and external
  services rows

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Replaces the dead twitter.com/studyield URL (and the [@studyield]
display handle in the contact tables) with the active X account at
x.com/infoinletcom across the main README and all 11 localized files.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Embeds two new screenshots after the textual claims they illustrate:
- ai-chat.png after the Key Capabilities list, showing the Study Buddy
  chat with starter prompts grounded in user-uploaded materials
- problem-solver.png after the comparison table, showing the Analysis,
  Solver, and Verifier agents collaborating on a sample problem

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Adds the same two feature screenshots (ai-chat.png and problem-solver.png)
that were added to the main README into all 11 localized files, anchored
at the matching positions (after the Key Capabilities list and after the
comparison table). Captions are translated per language so each
localized README reads naturally rather than mixing English captions
into translated prose.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>