docs: refresh tagline and short_description (no Cursor reference)

README.md

@@ -9,7 +9,7 @@ python_version: '3.13'
 app_file: app.py
 pinned: false
 license: mit
-short_description: Cursor for self-hosters — 256K context on AMD MI300X
+short_description: Repo-scale coding agent — 256K context on a single MI300X
 tags:
   - amd-developer-hackathon
   - agents
@@ -23,7 +23,7 @@ tags:
 
 # REPOMIND
 
-> Open-source Cursor for self-hosters. Ingest an entire git repo (256K tokens, FP8) and reason across it on a single AMD MI300X — what NVIDIA H100 80GB physically cannot do.
+> Open-source repo-scale coding agent for self-hosted use. Ingest an entire git repo (256K tokens, FP8) and reason across it on a single AMD MI300X — what NVIDIA H100 80GB physically cannot do.
 
 **Built for the [AMD Developer Hackathon 2026](https://lablab.ai/ai-hackathons/amd-developer)** · MIT License · [GitHub source](https://github.com/SRKRZ23/repomind)