test: WOT metadata round-trip with doodad/WMO placements

Comprehensive test for WOT JSON metadata parsing: verifies tile coords,
texture list, chunk layers with holes, water data, doodad names and
placements (nameId, uniqueId, position, rotation, scale, flags), and
WMO names and placements (nameId, uniqueId, position, rotation, flags,
doodadSet) all survive the export→load cycle.

31 new assertions. Total: 309 assertions across 81 test cases.
All open format round-trips now have test coverage.

tests/test_open_formats.cpp

@@ -168,6 +168,90 @@ TEST_CASE("WHM rejects invalid magic", "[whm]") {
     std::filesystem::remove(path);
 }
 
+TEST_CASE("WOT metadata round-trip with placements", "[wot]") {
+    ensureTestDir();
+    std::string wotPath = TEST_DIR + "/test_terrain.wot";
+
+    // Write a WOT JSON with textures, layers, water, doodads, and WMOs
+    {
+        std::ofstream f(wotPath);
+        f << R"({
+  "format": "wot-1.0",
+  "tileX": 32, "tileY": 48,
+  "textures": ["Tileset\\Elwynn\\ElwynnGrass01.blp", "Tileset\\Elwynn\\ElwynnDirt01.blp"],
+  "chunkLayers": [
+    {"layers": [0, 1], "holes": 5}
+  ],
+  "water": [
+    {"chunk": 0, "type": 5, "height": 50.0},
+    null
+  ],
+  "doodadNames": ["World\\Doodad\\Tree01.m2", "World\\Doodad\\Rock03.m2"],
+  "doodads": [
+    {"nameId": 0, "uniqueId": 100, "pos": [1000.0, 2000.0, 50.0], "rot": [0.0, 45.0, 0.0], "scale": 1024, "flags": 0},
+    {"nameId": 1, "uniqueId": 101, "pos": [1100.0, 2100.0, 55.0], "rot": [10.0, 0.0, 5.0], "scale": 512, "flags": 2}
+  ],
+  "wmoNames": ["World\\WMO\\House01.wmo"],
+  "wmos": [
+    {"nameId": 0, "uniqueId": 200, "pos": [1200.0, 2200.0, 60.0], "rot": [0.0, 90.0, 0.0], "flags": 1, "doodadSet": 0}
+  ]
+})";
+    }
+
+    ADTTerrain terrain{};
+    terrain.loaded = true;
+    for (int i = 0; i < 256; i++) {
+        terrain.chunks[i].heightMap.loaded = true;
+        terrain.chunks[i].position[2] = 100.0f;
+    }
+
+    REQUIRE(WoweeTerrainLoader::loadMetadata(wotPath, terrain));
+
+    // Tile coordinates
+    REQUIRE(terrain.coord.x == 32);
+    REQUIRE(terrain.coord.y == 48);
+
+    // Textures
+    REQUIRE(terrain.textures.size() == 2);
+    REQUIRE(terrain.textures[0] == "Tileset\\Elwynn\\ElwynnGrass01.blp");
+
+    // Chunk layers
+    REQUIRE(terrain.chunks[0].layers.size() == 2);
+    REQUIRE(terrain.chunks[0].layers[0].textureId == 0);
+    REQUIRE(terrain.chunks[0].layers[1].textureId == 1);
+    REQUIRE(terrain.chunks[0].holes == 5);
+
+    // Water
+    REQUIRE(terrain.waterData[0].hasWater());
+    REQUIRE(terrain.waterData[0].layers[0].liquidType == 5);
+    REQUIRE(terrain.waterData[0].layers[0].maxHeight == Catch::Approx(50.0f));
+
+    // Doodad names and placements
+    REQUIRE(terrain.doodadNames.size() == 2);
+    REQUIRE(terrain.doodadNames[0] == "World\\Doodad\\Tree01.m2");
+    REQUIRE(terrain.doodadPlacements.size() == 2);
+    REQUIRE(terrain.doodadPlacements[0].nameId == 0);
+    REQUIRE(terrain.doodadPlacements[0].uniqueId == 100);
+    REQUIRE(terrain.doodadPlacements[0].position[0] == Catch::Approx(1000.0f));
+    REQUIRE(terrain.doodadPlacements[0].rotation[1] == Catch::Approx(45.0f));
+    REQUIRE(terrain.doodadPlacements[0].scale == 1024);
+    REQUIRE(terrain.doodadPlacements[1].nameId == 1);
+    REQUIRE(terrain.doodadPlacements[1].flags == 2);
+
+    // WMO names and placements
+    REQUIRE(terrain.wmoNames.size() == 1);
+    REQUIRE(terrain.wmoNames[0] == "World\\WMO\\House01.wmo");
+    REQUIRE(terrain.wmoPlacements.size() == 1);
+    REQUIRE(terrain.wmoPlacements[0].nameId == 0);
+    REQUIRE(terrain.wmoPlacements[0].uniqueId == 200);
+    REQUIRE(terrain.wmoPlacements[0].position[0] == Catch::Approx(1200.0f));
+    REQUIRE(terrain.wmoPlacements[0].rotation[1] == Catch::Approx(90.0f));
+    REQUIRE(terrain.wmoPlacements[0].flags == 1);
+    REQUIRE(terrain.wmoPlacements[0].doodadSet == 0);
+
+    std::filesystem::remove(wotPath);
+}
+
 TEST_CASE("WOB rejects missing file", "[wob]") {
     REQUIRE_FALSE(WoweeBuildingLoader::exists("nonexistent_path"));
 }