Strip local paths from requirements.txt header

The export header had recorded a manual `uv export --project <abspath>
-o <abspath>` run, leaking this machine's filesystem path into the
repo. Re-export from inside the repo with the bare command so the
header is path-free and reproducible.

requirements.txt

@@ -1,5 +1,5 @@
 # This file was autogenerated by uv via the following command:
-#    uv export --project /home/ubuntu/ghq/hf.co/spaces/hysts/BLIP2 --no-hashes --no-dev --no-emit-package typer-slim --no-emit-package spaces -o /home/ubuntu/ghq/hf.co/spaces/hysts/BLIP2/requirements.txt
+#    uv export --no-hashes --no-dev --no-emit-package typer-slim --no-emit-package spaces -o requirements.txt
 accelerate==1.2.1
     # via blip2
 annotated-types==0.7.0