Kin: personal relationships app — server (cadence/due/migrations) + Expo Android app

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server/migrations/001_baseline.sql

@@ -0,0 +1,73 @@
+-- Baseline: the schema that existed in the live `personal` DB before this repo
+-- had migrations. Fully idempotent so it no-ops against the live DB and builds
+-- everything from scratch on a fresh install.
+
+create extension if not exists "uuid-ossp";
+
+create or replace function set_updated_at() returns trigger as $$
+begin
+  new.updated_at = now();
+  return new;
+end;
+$$ language plpgsql;
+
+create table if not exists people (
+  id         uuid primary key default uuid_generate_v4(),
+  full_name  text not null,
+  first_name text,
+  last_name  text,
+  email      text,
+  phone      text,
+  tags       text[] not null default '{}',
+  notes      text,
+  location   text,
+  source     text,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create unique index if not exists people_email_lower_uniq
+  on people (lower(email)) where email is not null;
+create index if not exists people_tags_gin on people using gin (tags);
+
+create table if not exists interactions (
+  id          uuid primary key default uuid_generate_v4(),
+  person_id   uuid not null references people(id) on delete cascade,
+  type        text,
+  occurred_at timestamptz not null default now(),
+  summary     text,
+  notes       text,
+  created_at  timestamptz not null default now(),
+  updated_at  timestamptz not null default now()
+);
+
+create index if not exists interactions_person_idx on interactions (person_id);
+create index if not exists interactions_occurred_at_idx on interactions (occurred_at desc);
+
+create table if not exists relationships (
+  id             uuid primary key default uuid_generate_v4(),
+  from_person_id uuid not null references people(id) on delete cascade,
+  to_person_id   uuid not null references people(id) on delete cascade,
+  type           text not null,
+  notes          text,
+  created_at     timestamptz not null default now(),
+  updated_at     timestamptz not null default now(),
+  constraint relationships_no_self check (from_person_id <> to_person_id),
+  constraint relationships_unique unique (from_person_id, to_person_id, type)
+);
+
+create index if not exists relationships_from_idx on relationships (from_person_id);
+create index if not exists relationships_to_idx on relationships (to_person_id);
+
+-- Triggers: drop-and-recreate is the only idempotent form pre-PG14.
+drop trigger if exists people_set_updated_at on people;
+create trigger people_set_updated_at before update on people
+  for each row execute function set_updated_at();
+
+drop trigger if exists interactions_set_updated_at on interactions;
+create trigger interactions_set_updated_at before update on interactions
+  for each row execute function set_updated_at();
+
+drop trigger if exists relationships_set_updated_at on relationships;
+create trigger relationships_set_updated_at before update on relationships
+  for each row execute function set_updated_at();

server/migrations/002_cadence.sql

@@ -0,0 +1,11 @@
+-- Relational-wealth fields: how often I want to be in touch with each person,
+-- and enough state to drive the "who's due" list.
+
+alter table people add column if not exists cadence_days   integer,
+                   add column if not exists snoozed_until  date,
+                   add column if not exists archived       boolean not null default false,
+                   add column if not exists birthday       date;
+
+comment on column people.cadence_days  is 'Target days between contacts; null = no reminder for this person';
+comment on column people.snoozed_until is 'Hide from the due list until this date';
+comment on column people.archived      is 'Hidden from lists and due computation, kept for history';