Refactor with registry.

data/koans.sql

@@ -0,0 +1,20 @@
+BEGIN;
+-- Koan data {{{
+INSERT INTO version_history (component, from_version, to_version, author)
+  VALUES ('KOANS', 0, 1, 'Initial Creation');
+
+---- !koans lists koans. !koan gives a random koan. !koans add name ... !koans del name ...
+
+CREATE TABLE koans(
+  koanid INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+  communityid INTEGER NOT NULL REFERENCES communities ON UPDATE CASCADE ON DELETE CASCADE,
+  name TEXT NOT NULL,
+  message TEXT NOT NULL,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  _timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+CREATE TRIGGER koans_timestamp BEFORE UPDATE ON koans
+  FOR EACH ROW EXECUTE FUNCTION update_timestamp_column();
+
+-- }}}
+COMMIT;