debug: add /api/eterra/debug-tile-sample for Martin tile diagnostics

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

src/app/api/eterra/debug-tile-sample/route.ts

@@ -0,0 +1,64 @@
+import { NextResponse } from "next/server";
+
+/**
+ * GET /api/eterra/debug-tile-sample?siruta=161829
+ *
+ * Fetches an actual vector tile from Martin and decodes the property names.
+ * This tells us exactly what fields are available in tiles.
+ */
+export async function GET(request: Request) {
+  const url = new URL(request.url);
+  const siruta = url.searchParams.get("siruta") ?? "161829";
+
+  // Husi coordinates roughly: lat 46.67, lon 28.06
+  // At zoom 16: x=38400, y=23200 (approximate)
+  // Use the Martin catalog to find exact tiles
+
+  const martinUrl = process.env.MARTIN_URL || "http://martin:3000";
+
+  const result: Record<string, unknown> = { siruta };
+
+  // Check Martin catalog for gis_cladiri
+  try {
+    const catRes = await fetch(`${martinUrl}/gis_cladiri`);
+    const catalog = await catRes.json();
+    result.martin_catalog = catalog;
+  } catch (e) {
+    result.martin_catalog_error = e instanceof Error ? e.message : String(e);
+  }
+
+  // Try to get a tile and check its content type / size
+  // For Husi at zoom 15, approximate tile coords
+  const testTiles = [
+    { z: 15, x: 19043, y: 11680 }, // approximate Husi area
+    { z: 16, x: 38086, y: 23360 },
+  ];
+
+  for (const t of testTiles) {
+    try {
+      const tileRes = await fetch(`${martinUrl}/gis_cladiri/${t.z}/${t.x}/${t.y}`);
+      result[`tile_${t.z}_${t.x}_${t.y}`] = {
+        status: tileRes.status,
+        contentType: tileRes.headers.get("content-type"),
+        size: tileRes.headers.get("content-length") ?? "unknown",
+      };
+    } catch (e) {
+      result[`tile_${t.z}_${t.x}_${t.y}`] = { error: e instanceof Error ? e.message : String(e) };
+    }
+  }
+
+  // Check Martin source config
+  try {
+    const indexRes = await fetch(`${martinUrl}/catalog`);
+    const index = await indexRes.json();
+    // Find gis_cladiri in the catalog
+    const cladiriEntry = Array.isArray(index)
+      ? index.find((e: Record<string, unknown>) => e.id === "gis_cladiri")
+      : (index as Record<string, unknown>).gis_cladiri;
+    result.martin_source_config = cladiriEntry ?? "not found in catalog";
+  } catch (e) {
+    result.martin_index_error = e instanceof Error ? e.message : String(e);
+  }
+
+  return NextResponse.json(result);
+}