Update translations and internationalization files

[gamesushi]

Summary

This PR adds full translation support for Simplified Chinese (zh_CN) and Hebrew (he_IL), fixes several i18n bugs, and includes Windows/PHP 8.2 compatibility patches for the gettext emulation layer.

New Language Packs

zh_CN (Simplified Chinese)

• Complete language pack: language.php (360+ entries), config.ini, global.po with 99%+ translation (2,443 entries)
• Route config (zh.xml) added

he_IL (Hebrew) — 97% translated (2,146 entries)

• Note: Google Translate uses language code iw for Hebrew, not he

Bug Fixes

it_IT 500 Error (Critical)

• it_IT/language.php and pt_BR/config/config.ini had UTF-8 BOM headers (EF BB BF), causing PHP 8.2 fatal error: "Namespace declaration statement has to be the very first statement"
• Removed BOM and normalized line endings to LF

pt_BR Language Name

• Fixed config.ini name from English → Português (Brasil)

he_IL Text Direction

• Fixed config.ini dir from rtf → rtl (Hebrew is right-to-left)

Windows gettext Emulation Patch (gettext.inc.php)

• _setlocale(): Added fallback to getenv('LC_ALL') when $CURRENTLOCALE is empty (Windows setlocale with POSIX locale names returns false)
• _encode(): Empty charset now defaults to UTF-8 instead of throwing ValueError in mb_convert_encoding on PHP 8.2

Translation Tools

Tool	Purpose
batch_translate_fast.py	Multi-threaded Google Translate batch translator (5 workers, placeholder-safe)
compile_mo.py	Compile all .po → .mo via polib
fix_translations.py	Post-translation fix for common mistranslations (e.g. Save→节省→保存)
lang_diag.php	Browser diagnostic page for all 12 languages

Testing

• All 12 languages verified functional on XAMPP/Windows + PHP 8.2
• _tools/lang_diag.php passes for all locales
• http://ph7builder.local:8081/?l=zh_CN → Chinese
• http://ph7builder.local:8081/?l=he_IL → Hebrew (RTL)
• http://ph7builder.local:8081/?l=it_IT → Italian (no longer 500)

[gamesushi]

add Chinese fix Italian