Board: UCLA events editor sign-in

[getvindicated2day]

What this does

Adds an events editor sign-in for UCLA, the same as Berkeley's socials editor password.

• New Railway variable BOARD_UCLA_EVENTS_PASSWORD. It's listed blank in .env.example; the value isn't in the code.
• Signing in to /board/ucla with it gives the member view, plus adding, editing and deleting events (dates, times, locations, leads, status). Nothing else is editable, and admins-only content stays hidden (admins-only announcements, unassigned tasks, the Changes tab, email results).
• The header says Signed in as events editor.
• The server enforces it. Event writes accept only that chapter's admin or events-editor session. Every other write is admin-only, and sessions are per chapter, so Berkeley sessions can't touch UCLA.
• The change log now labels each entry by who made it ("UCLA events editor", "UCLA admin", "Berkeley socials editor"). Before, every entry said "admin". The optional "Your name" box appears on the events tab for the events editor, and the log shows it as self-reported.
• Admins keep everything they had.

This reuses the existing socials role, which UCLA's hub now calls the events editor.

Tested (local production build)

• The events password added an event and set its location, time, lead and status, then deleted another. All four changes are logged as "UCLA events editor (Sahana, self-reported)".
• The events password got 404 on member, assignment, announcement, meeting, settings, teams, restore, announcement email, new week, import, invite, photo upload and person-status writes.
• UCLA member, Berkeley admin and Berkeley member sessions all got 404 adding, editing or deleting a UCLA event. The events cookie can't write to Berkeley.
• As the events editor, no other tab shows edit controls, and there's no Changes tab. There's no sideways scrolling at phone or desktop width.
• Typecheck, lint and build pass.

Deploy

Add BOARD_UCLA_EVENTS_PASSWORD in Railway with a value different from the other passwords, and give it to whoever runs UCLA's events.

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Generated by Claude Code