Seed household on container startup via seed.mjs

Without a household row the signIn callback has nothing to attach the
first user to, causing "No household membership" on first load. Add
scripts/seed.mjs (plain ESM, only needs postgres which is already in the
image) and run it from the entrypoint after migrations. Idempotent — skips
if a household already exists. Default calendars/lists are created by the
signIn callback when the first user authenticates.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -38,6 +38,7 @@ COPY --from=builder --chown=nextjs:nodejs /app/public ./public
 # the app itself imports, not the postgres-js/migrator subpath.
 COPY --from=builder --chown=nextjs:nodejs /app/drizzle ./drizzle
 COPY --from=builder --chown=nextjs:nodejs /app/scripts/migrate.mjs ./scripts/migrate.mjs
+COPY --from=builder --chown=nextjs:nodejs /app/scripts/seed.mjs ./scripts/seed.mjs
 COPY --from=builder --chown=nextjs:nodejs /app/node_modules/drizzle-orm ./node_modules/drizzle-orm
 COPY --from=builder --chown=nextjs:nodejs /app/node_modules/postgres ./node_modules/postgres
 COPY --chown=nextjs:nodejs docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh

docker-entrypoint.sh

@@ -8,4 +8,6 @@ else
   echo "skipping migrations (RUN_MIGRATIONS=$RUN_MIGRATIONS)"
 fi
 
+node /app/scripts/seed.mjs
+
 exec node /app/server.js

scripts/seed.mjs

@@ -0,0 +1,24 @@
+import postgres from "postgres";
+
+const url = process.env.DATABASE_URL;
+if (!url) {
+  console.error(JSON.stringify({ level: "error", msg: "DATABASE_URL is required" }));
+  process.exit(1);
+}
+
+const sql = postgres(url, { max: 1 });
+
+try {
+  const [existing] = await sql`SELECT id, name FROM households LIMIT 1`;
+  if (existing) {
+    console.log(JSON.stringify({ level: "info", msg: "household exists", name: existing.name }));
+  } else {
+    await sql`INSERT INTO households (name) VALUES ('Home')`;
+    console.log(JSON.stringify({ level: "info", msg: "seeded household Home" }));
+  }
+} catch (err) {
+  console.error(JSON.stringify({ level: "error", msg: "seed failed", err: String(err) }));
+  process.exit(1);
+} finally {
+  await sql.end({ timeout: 5 });
+}