[docs] Slim README, add FastH3 Omni news, add a docs news archive (#2066)

Co-authored-by: Aryan Kumar <156166681+aryan5v@users.noreply.github.com>

docs/getting_started/installation.md

@@ -60,6 +60,29 @@ UV_TORCH_BACKEND=cu126 uv pip install -e .
 uv pip install flash-attn --no-build-isolation -v
 ```
 
+## Install with an AI coding agent
+
+FastVideo is a monorepo with rich agent guidance (see
+[`AGENTS.md`](https://github.com/hao-ai-lab/FastVideo/blob/main/AGENTS.md)).
+If you use Claude Code, Cursor, or another coding agent, paste the prompt
+below; it detects your platform and follows the matching guide:
+
+```text
+Install FastVideo (https://github.com/hao-ai-lab/FastVideo) into a fresh uv virtual environment.
+
+1. Detect the platform: run `uname -m`, `nvidia-smi`, and `nvcc --version`.
+2. Read and follow the matching install guide exactly (in this repo, or at
+   https://hao-ai-lab.github.io/FastVideo/getting_started/installation/):
+     - NVIDIA GPU, x86_64                         -> docs/getting_started/installation/gpu.md
+     - NVIDIA DGX Spark / GB10, aarch64, CUDA 13  -> docs/getting_started/installation/spark.md
+     - Apple Silicon, macOS                       -> docs/getting_started/installation/mlx.md
+3. Use uv for every step. If a command fails, debug it and tell me what you changed.
+4. Verify the result:
+     python -c "import fastvideo, torch; print('cuda', torch.cuda.is_available())"
+     fastvideo --help
+5. Report which platform you detected and any deviations you had to make.
+```
+
 ## Requirements
 
 - **Python**: 3.10-3.12 is the tested and recommended range (the commands