feat(seed): synthetic fixture covering every pipeline stage + db:reset

Splits seed bootstrap (ports/roles/profile) into a shared module so
two seed entry points can share it:
- pnpm db:seed             realistic NocoDB-shaped fixture (existing)
- pnpm db:seed:synthetic   12 clients, one per pipeline stage + archive
                           variants (rich metadata for restore wizard)

scripts/db-reset.ts truncates all data tables (preserves migrations);
guarded by --confirm and a localhost host check. Companion npm scripts:
- pnpm db:reset
- pnpm db:reseed:realistic
- pnpm db:reseed:synthetic

scripts/dev-open-browser.ts launches a headed Chromium with no viewport
override (uses the host monitor's natural size), pre-fills the login
form for the requested role.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/db-reset.ts

@@ -0,0 +1,97 @@
+/**
+ * Wipe all data from the database, preserving schema + drizzle migration
+ * history. Run before swapping seed fixtures.
+ *
+ *   pnpm tsx scripts/db-reset.ts          (refuses without --confirm)
+ *   pnpm tsx scripts/db-reset.ts --confirm
+ *
+ * Truncates every table in the `public` schema except the drizzle
+ * migration tracker, then resets sequences. Wraps the loop in a single
+ * transaction so a mid-wipe failure rolls back cleanly.
+ *
+ * Refuses to run when DATABASE_URL points at anything that doesn't look
+ * like a local/dev host. Override with --i-know-what-im-doing.
+ */
+
+import 'dotenv/config';
+import postgres from 'postgres';
+
+const url = process.env.DATABASE_URL;
+if (!url) {
+  console.error('DATABASE_URL is not set; aborting.');
+  process.exit(1);
+}
+
+const args = new Set(process.argv.slice(2));
+if (!args.has('--confirm')) {
+  console.error('Refusing to wipe without --confirm');
+  console.error('Run again as: pnpm tsx scripts/db-reset.ts --confirm');
+  process.exit(1);
+}
+
+// Best-effort safety: refuse for anything that doesn't look like a local DB.
+function looksLocal(u: string): boolean {
+  try {
+    const parsed = new URL(u);
+    return (
+      parsed.hostname === 'localhost' ||
+      parsed.hostname === '127.0.0.1' ||
+      parsed.hostname === '::1' ||
+      parsed.hostname.endsWith('.local') ||
+      parsed.hostname.endsWith('.internal') ||
+      parsed.hostname === 'host.docker.internal' ||
+      // Docker compose service names commonly used here
+      parsed.hostname === 'postgres' ||
+      parsed.hostname === 'db'
+    );
+  } catch {
+    return false;
+  }
+}
+
+if (!looksLocal(url) && !args.has('--i-know-what-im-doing')) {
+  console.error(
+    `DATABASE_URL host doesn't look local. Refusing to wipe a remote DB without --i-know-what-im-doing.`,
+  );
+  process.exit(1);
+}
+
+const sql = postgres(url, { max: 1 });
+
+async function main() {
+  console.log('Resetting database...');
+  console.log(`  url: ${url.replace(/:[^:@]*@/, ':***@')}`);
+
+  const tables = await sql<{ tablename: string }[]>`
+    SELECT tablename FROM pg_tables
+    WHERE schemaname = 'public'
+      AND tablename NOT LIKE 'drizzle_%'
+      AND tablename != '__drizzle_migrations'
+  `;
+
+  if (tables.length === 0) {
+    console.log('  no user tables found, nothing to do.');
+    await sql.end();
+    return;
+  }
+
+  // Single TRUNCATE … CASCADE is faster than per-table loops and handles
+  // FK ordering for us. Quote table names defensively.
+  const tableList = tables.map((t) => `"public"."${t.tablename}"`).join(', ');
+
+  console.log(`  truncating ${tables.length} tables...`);
+  await sql.unsafe(`TRUNCATE ${tableList} RESTART IDENTITY CASCADE`);
+  console.log('  done.');
+
+  await sql.end();
+  console.log('');
+  console.log('Database reset complete. Run a seed script next:');
+  console.log('  pnpm db:seed              # realistic NocoDB-shaped fixture');
+  console.log('  pnpm db:seed:synthetic    # one client per pipeline stage');
+}
+
+main().catch(async (err) => {
+  console.error('Reset failed:', err);
+  await sql.end().catch(() => undefined);
+  process.exit(1);
+});