feat: added sneak peek from the community in the website.

[matbmoser]

Description

This pull request introduces the Seventh Eclipse Tractus-X Community Days (December 3–4, 2026) across the website, including a new blog post, event listings, and a homepage "sneak peek" section. It also improves event data handling by adding support for more detailed event fields and refactoring timezone detection logic.

New Event: Seventh Eclipse Tractus-X Community Days

• Added a new blog post announcing the Seventh Eclipse Tractus-X Community Days, including event details, agenda, calls for participation, and historical context (blog/2026-08-19-seventh-community-days.md).
• Added the event to both upcomingEvents.js and meetings.js, including full address, timing, and a "registration coming soon" flag to manage registration state. [1] [2]

Homepage Enhancements

• Introduced a new CommunitySneakPeek homepage section featuring the aftermovie from the Sixth Community Days, highlights of the event, and calls to join Office Hours or get involved.

Event Data Model Improvements

• Extended event and meeting data models to support optional fields such as location, onsite, registrationLink, registrationComingSoon, startTime, endTime, timezone, and address for richer event representation and calendar integration. [1] [2]

Codebase Refactoring

• Centralized timezone detection and calendar utilities by replacing the local detectTimezone function in MeetingsHub.jsx with imports from calendarUtils, improving maintainability and consistency. [1] [2]

Other Updates

• Updated the featured status of past events to ensure the new Community Days event is highlighted on the homepage.

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[matbmoser]

@copilot add some screenshots of the new sections