pin gradio sdk_version 5.50.0; drop gradio from requirements

README.md

@@ -4,6 +4,7 @@ emoji: 🔍
 colorFrom: yellow
 colorTo: gray
 sdk: gradio
+sdk_version: 5.50.0
 app_file: app.py
 pinned: false
 license: mit

requirements.txt

@@ -13,7 +13,10 @@
 torch
 llama-cpp-python==0.3.19
 
-gradio>=4.44
+# gradio is deliberately absent: the Space installs the version pinned as `sdk_version` in
+# README.md, and listing it here as well is how the two end up disagreeing. Leaving it unpinned in
+# both places is what broke the first deploy - HF fell back to a gradio 3.x default that has no
+# `show_copy_button`.
 huggingface_hub>=0.23
 transformers>=4.45
 sentence-transformers>=3.0