chore: regenerate uv.lock with hashes, use lockfile in setup (#2812)

- Regenerate uv.lock with sha256 hashes for all 2965 package artifacts
- Add python_version marker to yc-bench (requires >=3.12)
- Update setup-hermes.sh to prefer 'uv sync --locked' for hash-verified
  installs, with fallback to 'uv pip install' when lockfile is stale

This completes the supply chain hardening: pyproject.toml bounds the
version ranges, and uv.lock pins exact versions with cryptographic
hashes so tampered packages are rejected at install time.

pyproject.toml

@@ -64,7 +64,7 @@ rl = [
   "uvicorn[standard]>=0.24.0,<1",
   "wandb>=0.15.0,<1",
 ]
-yc-bench = ["yc-bench @ git+https://github.com/collinear-ai/yc-bench.git"]
+yc-bench = ["yc-bench @ git+https://github.com/collinear-ai/yc-bench.git ; python_version >= '3.12'"]
 all = [
   "hermes-agent[modal]",
   "hermes-agent[daytona]",