feat(geoportal): add /api/geoportal/setup-views endpoint for creating UAT zoom views

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/api/geoportal/setup-views/route.ts

@@ -0,0 +1,50 @@
+/**
+ * POST /api/geoportal/setup-views
+ *
+ * Creates the zoom-dependent UAT views for Martin vector tiles.
+ * Safe to re-run (CREATE OR REPLACE VIEW).
+ * Original geometry in GisUat.geom is NEVER modified.
+ */
+import { NextResponse } from "next/server";
+import { prisma } from "@/core/storage/prisma";
+
+export const runtime = "nodejs";
+export const dynamic = "force-dynamic";
+
+const VIEWS = [
+  {
+    name: "gis_uats_z0",
+    sql: `CREATE OR REPLACE VIEW gis_uats_z0 AS SELECT siruta, name, ST_SimplifyPreserveTopology(geom, 2000) AS geom FROM "GisUat" WHERE geom IS NOT NULL`,
+  },
+  {
+    name: "gis_uats_z5",
+    sql: `CREATE OR REPLACE VIEW gis_uats_z5 AS SELECT siruta, name, ST_SimplifyPreserveTopology(geom, 500) AS geom FROM "GisUat" WHERE geom IS NOT NULL`,
+  },
+  {
+    name: "gis_uats_z8",
+    sql: `CREATE OR REPLACE VIEW gis_uats_z8 AS SELECT siruta, name, county, ST_SimplifyPreserveTopology(geom, 50) AS geom FROM "GisUat" WHERE geom IS NOT NULL`,
+  },
+  {
+    name: "gis_uats_z12",
+    sql: `CREATE OR REPLACE VIEW gis_uats_z12 AS SELECT siruta, name, county, ST_SimplifyPreserveTopology(geom, 10) AS geom FROM "GisUat" WHERE geom IS NOT NULL`,
+  },
+];
+
+export async function POST() {
+  const results: string[] = [];
+
+  try {
+    for (const v of VIEWS) {
+      await prisma.$executeRawUnsafe(v.sql);
+      results.push(`${v.name} OK`);
+    }
+
+    return NextResponse.json({ status: "ok", results });
+  } catch (error) {
+    const msg = error instanceof Error ? error.message : "Unknown error";
+    return NextResponse.json(
+      { status: "error", results, error: msg },
+      { status: 500 }
+    );
+  }
+}