v2.4.4-mini — Pure-size compression of the v2.4.4 canonical baseline (no CSC). Capacity scaled to match v2.4.18-mini exactly (d_model 64, Q-hidden 128, critic-hidden 128, world-model 256, replay 1.5M). All architectural primitives preserved (mixer × 2 layers, 4 heads, 32 quantiles, TD-MPC opt dim 48). No-CSC control cell of the 2×2 capacity / CSC experimental matrix.
v2.4.4 — Canonical baseline of the v2.4 family — separate encoders, TransformerEncoder symbol mixer × 2, ObsContextProjector residual, per-sym distributional Q (twin critics, 32 quantiles), world-model + CEM planner, no CSC.
v2.4 — N-agnostic refactor: branch / V_global separation.
v2.3 — Surgical fixes on v2.1: separate encoders, qg_new.detach().
v2.2 — Minimalist refactor under Simple_encoder.
v2.1 — Adapter rank-collapse fix, bias accumulation control, ResidualSkipHead actor.
v2 — Initial release.