update demos et docs

lib/src/handler.rs

@@ -26,8 +26,7 @@ use crate::core::Frame;
 pub trait AppHandler {
     /// Called once by `App::run`, right after the window/GPU context are created (winit `resumed`).
     /// Use it to register shaders, build Meshes/Materials, and populate `app.scene` before the loop
-    /// starts. This replaces the pre-`run` setup that was possible before the winit 0.30 migration.
-    /// Default implementation does nothing.
+    /// starts. Default implementation does nothing.
     /// Inputs: app — mutable reference to the fully-initialized App facade.
     fn setup(&mut self, _app: &mut App) {}
     /// Called once per frame before rendering begins. Used for physics updates, input processing,

lib/src/shaders/README.md

@@ -6,9 +6,8 @@ Contains WGSL shader source files used by the PipelineCache module. These are lo
 disk when referenced by their registered ID in PipelineCache.register_shader(). If a file is missing,
 PipelineCache falls back to the embedded STANDARD_SHADER constant defined in utils::conf.
 
-Since Step 5, only **one shader** remains: `standard_shader.wgsl` (Phong). The former
-`basic_shader.wgsl` was removed as a separate pipeline — flat 2D rendering is now the **unlit
-variant** of `standard` (decision ratified in the DRAFT: "2D ⊂ 3D").
+The directory contains a **single shader**: `standard_shader.wgsl` (Phong). Flat 2D rendering is
+the **unlit variant** of `standard`.
 
 ## Files
 
@@ -21,7 +20,7 @@ variant** of `standard` (decision ratified in the DRAFT: "2D ⊂ 3D").
 `standard_shader.wgsl` is WSG's unified (Phong) shader. It exposes the two bind groups shared
 by every material (Step 3: a single layout for all).
 
-### Vertex Input Layout (56-byte stride — correspond au `resources::Vertex`)
+### Vertex Input Layout (56-byte stride — matches `resources::Vertex`)
 
 | Location | Attribute | Type | Offset (bytes) |
 |----------|-----------|------|----------------|

lib/src/utils/conf.rs

@@ -11,9 +11,9 @@
 //! - **app::AppBuilder** reads APP_DEFAULT_TITLE, APP_DEFAULT_WIDTH, and APP_DEFAULT_HEIGHT for default window configuration.
 
 /// Path to the standard (Phong) WGSL shader file on disk (runtime). Used by PipelineCache::load_shader()
-/// for file-based loading. This is the unified pipeline shader (Step 3: a single layout for all):
+/// for file-based loading. This is the unified pipeline shader (a single layout for all):
 /// it carries the full uniform contract (frame + object bind groups) and supports an unlit mode so flat
-/// 2D rendering is a special case of the 3D lit path. The `basic` family was removed (Step 5).
+/// 2D rendering is a special case of the 3D lit path.
 ///
 /// NOTE: the shipped `assets/shaders/*.wgsl` files are OPTIONAL — when they are absent (library consumed
 /// from a checkout without the assets directory, or from a published crate), `PipelineCache::load_shader`