Increase invite rate limit from 5 to 20 per 24 hours

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sanity

rust/api/src/rate_limit.rs

@@ -13,7 +13,7 @@ use std::sync::Mutex;
 use thiserror::Error;
 
 /// Maximum number of invites allowed per IP within the time window
-const MAX_INVITES_PER_WINDOW: usize = 5;
+const MAX_INVITES_PER_WINDOW: usize = 20;
 
 /// SHA256 hashes of IPs exempt from rate limiting (for testing)
 const EXEMPT_IP_HASHES: &[&str] = &[

rust/api/src/routes.rs

@@ -366,7 +366,7 @@ async fn create_room_invite(
             return Err((
                 StatusCode::TOO_MANY_REQUESTS,
                 Json(InviteErrorResponse {
-                    error: "Rate limited. You can request up to 5 invites per 24 hours.".to_string(),
+                    error: "Rate limited. You can request up to 20 invites per 24 hours.".to_string(),
                     retry_after_seconds: retry_after,
                 }),
             ));