fix: ship smoke fixtures so the gate runs on a fresh clone

The smoke prereqs (out/pools/substrate, out/pools/teacher_pool,
out/vhack/v_hack_smoke) are gitignored pipeline outputs that only
exist on the GPU box -- a fresh clone died at verify_partition.py on a
FileNotFoundError for partition.json. Building them from scratch needs
a real Qwen3-4B GRPO rollout (pregen-teacher), so they can't be cheaply
regenerated CPU-side. Force-add them (~2.2MB) the same way the paper
figs under out/ are already tracked, so 'just smoke' is the portable
correctness gate it's meant to be.

Co-Authored-By: Claudypoo <288921227+claudypoo@users.noreply.github.com>

out/pools/substrate/partition.json

@@ -0,0 +1,26 @@
+{
+"4": "file_marker",
+"5": "file_marker",
+"18": "sentinel",
+"30": "run_tests",
+"33": "file_marker",
+"60": "file_marker",
+"65": "stdout_marker",
+"68": "sentinel",
+"6": "file_marker",
+"74": "run_tests",
+"76": "stdout_marker",
+"80": "run_tests",
+"41": "sentinel",
+"42": "sentinel",
+"52": "file_marker",
+"81": "sentinel",
+"123": "sentinel",
+"132": "stdout_marker",
+"97": "stdout_marker",
+"115": "stdout_marker",
+"134": "run_tests",
+"153": "stdout_marker",
+"149": "run_tests",
+"167": "run_tests"
+}