chore(release): exclude Meet Student Slovenia 2026 from publish

Remove the MSS 2026 news page, homepage promo banner, and listing entries,
then rebuild listings/sitemap/llms.txt/search-index so no MSS references
remain. Keeps shared event CSS/JS intact for other events. MSS 2026 stays
on feat/no-code-cms for a later, separate publish.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

llms.txt

@@ -64,7 +64,6 @@ AI summary: https://msosorg.com/links-for-bots/about-msos/
 
 ## News
 - [News and updates](https://msosorg.com/en/news/): Everything new at MSOS in one place — events and projects, blog stories, announcements and official updates for Macedonian students in Slovenia.
-- [Meet Student Slovenia 2026](https://msosorg.com/en/news/meet-student-slovenia-2026/)
 - [Proof-of-means amount updated to €507,43 per month](https://msosorg.com/en/news/proof-of-means-updated-2026/): If you are applying for or renewing a student residence permit in Slovenia, you must prove you have enough money to support yourself. That requirement is tied…
 
 ## Events & projects