re: built-in 15 IS set_group_speed — and the turret anomaly was my own artefact

The member object sub_82348830 returns is the per-member unit DEFINITION, and
that identification is not a guess: the same spawn loop builds two aggregates
and each lands on a semantically apt field with the apt reducer.

  group +192   min, seeded FLT_MAX   member +164 = CruisingVelocity
  group +472   sum                   member  +84 = HP

A wrong struct would have to make both offsets land on apt fields AND pair
each with the apt reducer. Minimum of a speed, sum of hit points: a
formation's cruise limit and its total health.

The quantitative test over all 1360 sites, joining each to its craft's
definition:

  value <= the craft's MaximumVelocity    1355 / 1360 = 99.6%   (5 fail)
  value <= the craft's CruisingVelocity   1042 / 1360 = 76.6%   (318 fail)

The test discriminates -- the cruise bound breaks 318 times, the hull maximum
5 -- so the script sets a COMMANDED SPEED, free to exceed the cruise default
and bounded by what the hull can do.

The turret anomaly that stopped me naming this two iterations ago was my own
artefact. UN_e007_ADAN_Turret's definition carries MaximumVelocity 500 and
CruisingVelocity 280: the data models turrets as if mobile, so a script value
of 400 is legal and simply never manifests. I had assumed turrets have no
velocity fields and treated 13% of the traffic as a refutation.

Recorded as unsettled: the five overshoots are UN_e106_ADAN_Destroyer 200 vs
a 150 maximum (x2) and UN_e011_ADAN_Attacker_B_HF/_Wayne 500 vs 450 (x3).
Designer overrides or an engine clamp; not established.

Named set_group_speed. Default = the slowest member's CruisingVelocity;
mode 1 restores it, mode 3 sets it, mode 2 hands it a global constant.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE

docs/re/data/isl-stage02.txt

@@ -91,6 +91,7 @@ Generated by `tools/re-capture/isl_report.py calls`.
   30  objective_marker          179
   20  hp_pct_test               167
   47  squadron_attack           137
+  15  set_group_speed           127
   18  dist_lt                    92
   5   kill_coroutine             83
   70  unit_alive                 71