Gate now scores each rollout by dot(pooled bottleneck act, v_act) captured on
the no-grad logpi_old forward (quarantine-ablated, matching the sampling
policy); masks are pinned BEFORE the single grad-carrying forward, so the
grad-gate's pass-1 backward is gone. Thresholds: rolling 256-act buffer,
z-normalized, two-threshold Otsu (winsorized 1/99); warmup pins absorb until
128 scores. Buffer stores pooled acts and re-scores against the current v_act,
so the forward-only refresh (every 5 steps) needs no flush. No bimodality
guard: calibration showed Otsu tail separation ~2.4-2.8 buffer-sd on every
condition including pure Gaussians, so no shape statistic discriminates.
Deleted with the arm wiring (rename-on-logic-change: routeA never conflates
with routeV runs): extract_vhack_grad.py, _build_v_grad, route_band_edges,
_pair_cos, the pass-1 autograd.grad block, grad_probe training wiring,
v_grad_k/route_std_*/routeV_random_v_seed config, smoke-topk recipe.
c-probe stays in lora2r.py for scripts/diag_pinning.py only.
verify_science_invariants: all-in-one count 27 -> 42 (stale since c33b810
added the wave-2 behavior2 pairs) + assert the 8-pair routeA training subset.
Smoke: routeA/vanilla/absorb/solvemix all pass (gate exercises warmup, Otsu
zones, refresh, deploy ablation) -- /tmp/claude-1000/smoke_routeA.log.
Co-Authored-By: Claudypoo <288921227+claudypoo@users.noreply.github.com>
git mv src/projected_grpo -> src/vgrout and find-replace the module name in
all imports (.py), `-m projected_grpo.*` invocations (justfile), and the
[project] name (pyproject; setuptools auto-discovers via where=["src"]).
Left RESEARCH_JOURNAL.md untouched: its commands/paths are dated lab notes
tied to past commits, so rewriting them would falsify provenance. Repo dir,
git remote, and absolute paths unchanged.
Verified: `import vgrout` and `python -m vgrout.train --help` load the full
graph; verify_rewards.py + verify_gate_anchor.py (both import vgrout) pass.
Full `just smoke` is blocked upstream by missing gitignored data artifacts
(out/pools/{substrate,teacher_pool}, out/vhack/*smoke*), unrelated to the rename.
