[add] textured_cube tutorial and update tutorial links.

Author: vmarcella

docs/tutorials/README.md

@@ -3,23 +3,26 @@ title: "Tutorials Index"
 document_id: "tutorials-index-2025-10-17"
 status: "living"
 created: "2025-10-17T00:20:00Z"
-last_updated: "2025-10-17T00:20:00Z"
-version: "0.1.0"
+last_updated: "2025-11-10T00:00:00Z"
+version: "0.2.0"
 engine_workspace_version: "2023.1.30"
 wgpu_version: "26.0.1"
 shader_backend_default: "naga"
 winit_version: "0.29.10"
-repo_commit: "93c85ccbc3863ecffc73e68fb340c5d45df89377"
+repo_commit: "727dbe9b7706e273c525a6ca92426a1aba61cdb6"
 owners: ["lambda-sh"]
 reviewers: ["engine", "rendering"]
 tags: ["index", "tutorials", "docs"]
 ---
 
 This index lists tutorials that teach specific engine tasks through complete, incremental builds.
 
-- Uniform Buffers: Build a Spinning Triangle — `docs/tutorials/uniform-buffers.md`
+- Uniform Buffers: Build a Spinning Triangle — [uniform-buffers.md](uniform-buffers.md)
+- Textured Quad: Sample a 2D Texture — [textured-quad.md](textured-quad.md)
+- Textured Cube: 3D Push Constants + 2D Sampling — [textured-cube.md](textured-cube.md)
 
 Browse all tutorials in this directory.
 
 Changelog
+- 0.2.0 (2025-11-10): Add links for textured quad and textured cube; update metadata and commit.
 - 0.1.0 (2025-10-17): Initial index with uniform buffers tutorial.