Install git in job (vllm image lacks it)

run_job.sh

@@ -15,6 +15,12 @@
 set -euo pipefail
 cd "$(dirname "$0")"
 
+echo "=== [setup] git (vllm image has none) ==="
+apt-get update -qq && apt-get install -y -qq --no-install-recommends git ca-certificates
+
+# NOTE: openenv pulls fastmcp 3.x -> mcp 1.x, which conflicts with vllm 0.32's
+# mcp>=2. pip keeps mcp 1.x and only warns; if vllm serve crashes on an mcp
+# import, pin an older image tag (vllm>=0.22 suffices for TRL's weight transfer).
 echo "=== [setup] packages ==="
 # vllm + torch come from the base image (vllm/vllm-openai). Per TRL docs,
 # transformers>=5.2.0 may need --no-deps next to vllm's pinned stack.