**Root Cause:**
The requested context window (**262,144 tokens**) is far too large for the available GPU memory (**1,024 MiB**). The KV (Key-Value) cache size scales with the context length; for a 256k context, even a small model requires several gigabytes of VRAM just to store the cache, which exceeds your remaining 1 GB of free space.

**Next Two Actions:**
1. **Reduce the context size:** Lower the `-c` (or `--ctx-size`) parameter to a more manageable value that fits in your VRAM (e.g., `-c 4096` or `-c 8192`).
2. **Reduce GPU offloading:** Decrease the number of layers offloaded to the GPU (the `-ngl` or `--n-gpu-layers` parameter) to free up enough VRAM to accommodate the KV cache for your desired context size.