fix collision: lift 'deploy hack =0' off the y=0 line in train_vs_deploy

The solid-red deploy line ran straight through the annotation text (tufte
collision test). Move it into the empty band above the flat line (axes y=0.12).

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

scripts/plot_dynamics.py

@@ -455,10 +455,11 @@ def plot_train_vs_deploy(runs: list[dict], out: Path) -> None:
             ax.plot(xm, ym, color=color, ls=ls, lw=1.8, solid_capstyle="round")
             if key == "hk_dep" and np.nanmax(ym) < 0.02:
                 deploy_hack_zero = True
-        if deploy_hack_zero:              # the route headline: solid-red pinned at 0
-            ax.annotate(r"deploy hack $\equiv 0$", (0.04, 0.0),
-                        xycoords=("axes fraction", "data"), color=red, fontsize=8,
-                        va="bottom", xytext=(0, 3), textcoords="offset points")
+        if deploy_hack_zero:              # the route headline: solid-red pinned at 0.
+            # Lift the label into the empty band above the flat line (collision test:
+            # at y=0 the solid-red deploy line runs straight through the text).
+            ax.annotate(r"deploy hack $\equiv 0$", (0.04, 0.12),
+                        xycoords="axes fraction", color=red, fontsize=8, va="bottom")
         # teacher-off curriculum: shade the teacher-ON region so "seeded here, on-policy
         # after" stays visible in the C4 bootstrap variant (jobs 93/94).
         toffs = {r.get("teacher_off") for r in by_arm[arm] if r.get("teacher_off")}