fix(model): load lafabrik glb

docs/technical/map-lod.md

@@ -84,11 +84,11 @@ This matters for `lafabrik`: adding `public/models/lafabrik-LOD/` is not enough
 To add LOD support for a model:
 
 1. Add the light model in `public/models/<name>-LOD/model.gltf`.
-2. Keep the regular model in `public/models/<name>/model.gltf`.
+2. Keep the regular model in `public/models/<name>/model.glb` or `public/models/<name>/model.gltf`.
 3. Add the mapping in `src/data/world/mapLodConfig.ts`.
 4. If the model uses a dedicated component, call `useMapLodModelPath()` in that component.
 5. Preload both paths when the component is dedicated and uses `useGLTF.preload()`.
-6. Verify the GLTF references: buffers, textures, opacity maps, and relative paths.
+6. Verify the GLTF/GLB references: buffers, textures, opacity maps, and relative paths.
 
 ## Current LOD Models
 

docs/technical/map-performance.md

@@ -14,12 +14,12 @@ This document tracks the current map-rendering performance pass.
 
 The first performance bottleneck was draw calls. Some assets were exported as many small GLTF primitives even when they used only a few materials.
 
-| Model            | Instances | Meshes / primitives | Notes                                                            |
+| Model            | Instances | Meshes / primitives | Notes                                                                                |
-| ---------------- | --------: | ------------------: | ---------------------------------------------------------------- |
+| ---------------- | --------: | ------------------: | ------------------------------------------------------------------------------------ |
-| `generateur`     |         3 |                3152 | Worst draw-call offender. Needs asset-side mesh merging.         |
+| `generateur`     |         3 |                3152 | Worst draw-call offender. Needs asset-side mesh merging.                             |
-| `lafabrik`       |         4 |                  56 | Moderate draw calls, heavy 2048 texture set.                     |
+| `lafabrik`       |         4 |                 474 | High primitive count; current HD GLB has embedded geometry and no external textures. |
-| `ecole`          |         1 |                 107 | One material but many primitives; should be merged.              |
+| `ecole`          |         1 |                 107 | One material but many primitives; should be merged.                                  |
-| `fermeverticale` |         3 |                   1 | Geometry is fine; textures are large for the visible complexity. |
+| `fermeverticale` |         3 |                   1 | Geometry is fine; textures are large for the visible complexity.                     |
 
 `generateur` was especially expensive because three visible instances could multiply thousands of primitives into thousands of draw calls. Instancing reduces repeated instance cost, but the source asset still needs a cleaner export.
 
@@ -34,7 +34,7 @@ Estimated source primitive count versus runtime merged groups:
 | `generateur` |              3152 |                     8 |
 | `ecole`      |               107 |                     2 |
 | `eolienne`   |               118 |                     8 |
-| `lafabrik`   |                56 |                    14 |
+| `lafabrik`   |               474 |                   ~77 |
 
 This is a code-side safety net, not a replacement for clean asset exports. Clean GLB exports with merged meshes and fewer textures remain the preferred long-term path.
 
@@ -255,7 +255,7 @@ Design/export should prioritize:
 1. Produce lower-poly `buisson`, `arbre`, `sapin`, and crop assets.
 2. Add LOD or billboard variants for far vegetation.
 3. Merge `generateur` meshes from 3152 primitives to a small number of material groups.
-4. Reduce `lafabrik` texture count and downscale flat/low-detail maps.
+4. Keep `lafabrik` exports texture-light, and merge repeated material primitives where possible.
 5. Merge `ecole` primitives because it uses a single material.
 6. Prefer runtime `.glb` or compressed runtime textures when the pipeline supports it.
 

src/components/three/world/LaFabrikMapModel.tsx

@@ -6,7 +6,7 @@ import {
 import { getMapLodModelPath } from "@/data/world/mapLodConfig";
 import { useMapLodModelPath } from "@/hooks/world/useMapLodModelPath";
 
-const LA_FABRIK_MODEL_PATH = "/models/lafabrik/model.gltf";
+const LA_FABRIK_MODEL_PATH = "/models/lafabrik/model.glb";
 const LA_FABRIK_LOD_MODEL_PATH = getMapLodModelPath("lafabrik");
 
 type LaFabrikMapModelProps = Omit<MergedStaticMapModelProps, "modelPath">;

src/data/galleryModels.ts

@@ -101,7 +101,7 @@ export const galleryModels: GalleryModel[] = [
     path: "/models/habitant2-animated/model.gltf",
   },
   { id: "immeuble1", name: "Immeuble", path: "/models/immeuble1/model.gltf" },
-  { id: "lafabrik", name: "La Fabrik", path: "/models/lafabrik/model.gltf" },
+  { id: "lafabrik", name: "La Fabrik", path: "/models/lafabrik/model.glb" },
   { id: "maison1", name: "Maison", path: "/models/maison1/model.gltf" },
   {
     id: "packderelance",