chore: trim redundant comments on the operant-abort PR

Per review feedback. Drop the InstantiateSite.bonsai location pointer after the
abort_velocity_threshold field (its semantics live in the field description) and
condense the 13-line inline block in _probability_grid_blocks to the stage-specific
values plus the stop-threshold constraint; the parameter mechanics are already in
make_patch's docstring and the field description.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: galenlynch

src/packages/aind_behavior_vr_foraging/src/aind_behavior_vr_foraging/task_logic.py

@@ -216,9 +216,7 @@ class OperantLogic(BaseModel):
         "by a GAIN updater) whereas this is a fixed absolute, only enable the velocity abort on stages where the "
         "stop threshold is already floored below it (e.g. a static stop threshold of 8 with this set to 15); never "
         "pair a low fixed abort with an actively-shaped, still-high stop threshold.",
-    )  # Implemented in InstantiateSite.bonsai as a third input merged ALONGSIDE the grace-distance and leave-site
-    # sources (the CheckDistanceFromEntry groups under WaitDelay and WaitForLick), comparing
-    # FilteredCurrentVelocity.Item1 -- the same signal used for stop detection -- against this value.
+    )
 
 
 class _PatchUpdateFunction(BaseModel):

src/packages/aind_behavior_vr_foraging_curricula/src/aind_behavior_vr_foraging_curricula/single_site/stages.py

@@ -143,19 +143,9 @@ def _probability_grid_blocks(
 ) -> list[task_logic.Block]:
     """The 13-block band: every grid (p_A, p_B) whose sum is allowed, plus the 5%
     no-reward distractor odor C (occupancy 0.475 / 0.475 / 0.05)."""
-    # is_operant=True: on the grid stages, abandoning a wait forfeits the reward, so the
-    # long delay is a real wait-or-abandon decision. The shaping stages stay non-operant.
-    # abort_velocity_threshold=15 cm/s adds a velocity abort ALONGSIDE grace distance +
-    # leaving the site. It catches slow-creepers who lick while drifting forward (e.g.
-    # 860900: velocity stays <15 while engaged, ramps to ~45-55 to leave).
-    # grace_distance_threshold raised to 50 cm (a full reward-site length, vs the 10 cm
-    # default) so the spatial source does not also clip that creep -- here velocity and
-    # leaving the site do the work, with grace only a far backstop.
-    # The 15 sits safely above this stage's stop velocity threshold (a static 8 -- the grid
-    # stages carry no STOP_VELOCITY_THRESHOLD updater, so the gate does not shape up into it).
-    # abort_velocity_threshold must stay >= the stop threshold or a locked stop would instantly
-    # abort; that is why the abort is off on learn_to_stop, where the gate is still shaping 60->8.
-    # See OperantLogic.abort_velocity_threshold for the full interaction.
+    # Grid stages are operant with a 15 cm/s velocity abort and grace raised to 50 cm (see
+    # make_patch). 15 stays above this stage's static stop threshold of 8 (no
+    # STOP_VELOCITY_THRESHOLD updater here) as OperantLogic.abort_velocity_threshold requires.
     make_patch_kwargs = {
         **_POST_STOP_PATCH_KWARGS,
         "delay": delay,