Zara Chat 1.2.0

Add GitHub Pages site, clean release package, and new project URL

- Add docs/ landing page for GitHub Pages
- Rebuild Zara_v1.2.0.zip from tracked files only (previous zip contained .git)
- Replace hizara.chat links with https://omayib.github.io/zara
- Fix readme.txt Stable tag to 1.2.0

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