Nicholai ad2f0c0b9c
feat(security): add multi-tenancy isolation and demo mode (#90)
Add org-scoped data isolation across all server actions to
prevent cross-org data leakage. Add read-only demo mode with
mutation guards on all write endpoints.

Multi-tenancy:
- org filter on executeDashboardQueries (all query types)
- org boundary checks on getChannel, joinChannel
- searchMentionableUsers derives org from session
- getConversationUsage scoped to user, not org-wide for admins
- organizations table, members, org switcher component

Demo mode:
- /demo route sets strict sameSite cookie
- isDemoUser guards on all mutation server actions
- demo banner, CTA dialog, and gate components
- seed script for demo org data

Also: exclude scripts/ from tsconfig (fixes build), add
multi-tenancy architecture documentation.

Co-authored-by: Nicholai <nicholaivogelfilms@gmail.com>
2026-02-15 22:05:12 -07:00
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