Initialize database; Add consumer; split off server

backend/migrations/20251027164934_init.sql

@@ -0,0 +1,41 @@
+-- Add migration script here
+
+CREATE TABLE actor (
+  did VARCHAR PRIMARY KEY,
+  handle VARCHAR UNIQUE,
+  indexed_at VARCHAR NOT NULL
+);
+
+CREATE TABLE event (
+  uri VARCHAR PRIMARY KEY,
+  cid VARCHAR NOT NULL,
+  organizer VARCHAR NOT NULL,
+
+  summary VARCHAR,
+  description VARCHAR,
+  location VARCHAR,
+  status VARCHAR,
+  timezone VARCHAR,
+
+  starts_at_original VARCHAR NOT NULL,
+  starts_at TIMESTAMPTZ NOT NULL,
+  ends_ats VARCHAR,
+
+  created_at VARCHAR,
+  indexed_at VARCHAR NOT NULL
+);
+CREATE INDEX idx_event_starts_at ON event(starts_at);
+
+CREATE TABLE rsvp (
+  uri VARCHAR PRIMARY KEY,
+  cid VARCHAR NOT NULL,
+  attendee VARCHAR NOT NULL,
+
+  event_uri VARCHAR NOT NULL,
+  event_cid VARCHAR NOT NULL,
+  status VARCHAR NOT NULL DEFAULT 'GOING',
+
+  indexed_at VARCHAR NOT NULL
+);
+CREATE INDEX idx_rsvp_event_uri ON rsvp(event_uri);
+CREATE INDEX idx_rsvp_attendee_event ON rsvp(attendee, event_uri);