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0b3bed62bf
Adds relay-side support for NIP-ER encrypted event reminders: Write path (ingest): - Register KIND_EVENT_REMINDER (30300) as parameterized replaceable, global-only, and UsersWrite-scoped - Validate not_before tag: exactly one, decimal digits only, no leading zeros, range 0..=MAX_SAFE_INTEGER - Reject expiration <= not_before when both are present and parseable Read path (REQ/COUNT/bridge): - AUTHOR_ONLY_KINDS array gates visibility — only the authenticated event author may read kind:30300 events - Exclusive author-only filters (kinds:[30300]) require authors=[self] or get CLOSED/403 - Mixed-kind filters pass the gate but per-event filtering silently omits other authors' reminders - COUNT fast path disabled when author-only kinds are in play to prevent leaking aggregate counts Integration tests (e2e_event_reminder.rs): - Write validation: valid, missing, duplicate, malformed not_before; expiration ordering; edge cases (0, MAX_SAFE_INTEGER) - Read filtering: author self-query, cross-user rejection (HTTP 403 and WS CLOSED), mixed-kind omission, replacement semantics Signed-off-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co> Co-authored-by: Will Pfleger <wpfleger@squareup.com> Signed-off-by: Will Pfleger <wpfleger@squareup.com>