feat: Wowee Open Model format (.wom) — novel M2 replacement

WOM format: binary model file with no Blizzard structures.
- WOM1 magic header + vertex/index counts + bounding box
- Vertices: position(vec3) + normal(vec3) + texCoord(vec2) = 32 bytes
- Indices: uint32 triangle list
- Texture paths: PNG references (not BLP)

WoweeModelLoader:
- load(): reads .wom binary back to WoweeModel struct
- save(): writes WoweeModel to .wom binary
- fromM2(): converts existing M2 models to WOM (static geometry,
  strips bone/animation data, converts BLP paths to PNG)
- exists(): checks for .wom file

Format replacement progress — 5 out of 6 done:
- DONE: ADT → WOT/WHM (terrain)
- DONE: WDT → zone.json (map definition)
- DONE: BLP → PNG (textures)
- DONE: DBC → JSON (data tables)
- DONE: M2 → WOM (static models)
- TODO: WMO → open building format

include/pipeline/wowee_model.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <glm/glm.hpp>
+#include <string>
+#include <vector>
+#include <cstdint>
+
+namespace wowee {
+namespace pipeline {
+
+// Wowee Open Model format (.wom) — novel format, no Blizzard IP
+// Designed for static doodads, props, and simple animated objects
+struct WoweeModel {
+    struct Vertex {
+        glm::vec3 position;
+        glm::vec3 normal;
+        glm::vec2 texCoord;
+    };
+
+    std::string name;
+    std::vector<Vertex> vertices;
+    std::vector<uint32_t> indices;
+    std::vector<std::string> texturePaths; // PNG paths
+    float boundRadius = 1.0f;
+    glm::vec3 boundMin{0}, boundMax{0};
+
+    bool isValid() const { return !vertices.empty() && !indices.empty(); }
+};
+
+class WoweeModelLoader {
+public:
+    // Load from .wom file (binary) + .wom.json (metadata)
+    static WoweeModel load(const std::string& basePath);
+
+    // Save to .wom + .wom.json
+    static bool save(const WoweeModel& model, const std::string& basePath);
+
+    // Convert an M2 model to WoweeModel (static geometry only, no animation)
+    static WoweeModel fromM2(const std::string& m2Path, class AssetManager* am);
+
+    // Check if a .wom exists
+    static bool exists(const std::string& basePath);
+};
+
+} // namespace pipeline
+} // namespace wowee