[update] documentation

Author: vmarcella

demos/README.md

@@ -3,13 +3,13 @@ title: "Demo Crates"
 document_id: "demo-crates-readme-2026-02-04"
 status: "draft"
 created: "2026-02-04T00:00:00Z"
-last_updated: "2026-02-04T00:00:00Z"
-version: "0.1.0"
+last_updated: "2026-02-05T22:52:14Z"
+version: "0.1.1"
 engine_workspace_version: "2023.1.30"
 wgpu_version: "26.0.1"
 shader_backend_default: "naga"
 winit_version: "0.29.10"
-repo_commit: "9031bcf7dd7fb60da09b04583de3a8f87743768f"
+repo_commit: "544444652b4dc3639f8b3e297e56c302183a7a0b"
 owners: ["lambda-sh"]
 reviewers: ["engine", "rendering"]
 tags: ["demos", "guide"]
@@ -39,22 +39,41 @@ demos/
 
 ## Running Demos
 
-Render demo:
+Minimal demo:
 
 ```bash
-cargo run -p lambda-demos-render --bin triangle
+cargo run -p lambda-demos-minimal --bin minimal
 ```
 
-Render demo with validation:
+Audio demos (audio support enabled by default):
 
 ```bash
-cargo run -p lambda-demos-render --bin triangle --features validation
+cargo run -p lambda-demos-audio --bin sine_wave
+cargo run -p lambda-demos-audio --bin sound_buffer
+cargo run -p lambda-demos-audio --bin play_sound
+```
+
+Render demos:
+
+```bash
+cargo run -p lambda-demos-render --bin triangle
+cargo run -p lambda-demos-render --bin triangles
+cargo run -p lambda-demos-render --bin immediates
+cargo run -p lambda-demos-render --bin indexed_multi_vertex_buffers
+cargo run -p lambda-demos-render --bin instanced_quads
+cargo run -p lambda-demos-render --bin textured_quad
+cargo run -p lambda-demos-render --bin textured_cube
+cargo run -p lambda-demos-render --bin uniform_buffer_triangle
+cargo run -p lambda-demos-render --bin offscreen_post
+cargo run -p lambda-demos-render --bin reflective_room
 ```
 
-Audio demo:
+Render demos with validation enabled (feature passthrough to `lambda-rs`):
 
 ```bash
-cargo run -p lambda-demos-audio --bin sine_wave --features audio-output-device
+cargo run -p lambda-demos-render --bin triangle --features validation
+cargo run -p lambda-demos-render --bin triangle --features validation-strict
+cargo run -p lambda-demos-render --bin triangle --features validation-all
 ```
 
 ## Workspace Behavior