chore: establish local platform baseline

migrations/000001_bootstrap.up.sql

@@ -0,0 +1,15 @@
+BEGIN;
+
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+CREATE EXTENSION IF NOT EXISTS vector;
+
+CREATE TABLE platform_metadata (
+    key         varchar(100) PRIMARY KEY,
+    value       jsonb NOT NULL,
+    updated_at  timestamptz NOT NULL DEFAULT now()
+);
+
+INSERT INTO platform_metadata (key, value)
+VALUES ('schema_baseline', '{"version":1,"description":"initial platform schema"}'::jsonb);
+
+COMMIT;