M1: document tested-and-reverted DoT tick-order finding (Venom poison)

Investigated the Venom poison under-attribution (#11) against Spirit fixture
20260623_162050. Cadence is perfect (sim casts == real exactly), so the gap
is poison tick production: real 74 ticks vs sim 50.

Pinned the mechanic: 72 poison placements (Maneater A1 x40 + Venom A3 x2x16)
-> 74 real ticks ~= 1 tick/placement. Real poisons are detonation-consumed by
Venom A1 (tick once, then removed), NOT lasting 2 full turns.

Tested reordering the DoT damage loops before debuff_bar.tick() (deal on the
expiry turn): total -5.6% -> -1.2% but Venom flipped to +16.2% OVER (50 -> 94
ticks). That's a compensating-wrong swap (double-ticks long poisons), so
REVERTED. Left an explanatory comment at the tick site. The clean fix is
modeling poison detonation-consumption, validated against this fixture's
74-tick / 37.87M target — fixed together with the Geo deflect (downstream of
burns), not in isolation.

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

Author: SnoopLawg

tools/cb_sim.py

@@ -1321,6 +1321,17 @@ def _cb_turn(self, tick: int):
         })
 
         # Tick debuffs
+        # NOTE (2026-06-23): tested reordering the DoT damage loops to run
+        # BEFORE this tick() (so a DoT's expiry turn still deals a tick).
+        # Against Spirit fixture 20260623_162050 that lifted the total from
+        # -5.6% to -1.2% but pushed Venom poison from -9.4% to +16.2% OVER
+        # (50 -> 94 ticks vs real 74). Real has ~72 poison placements
+        # (Venom A3 x2 x16 + Maneater A1 x40) for ~74 ticks ≈ 1 tick/placement,
+        # i.e. poisons are consumed by Venom A1 detonation rather than ticking
+        # their full 2-turn duration. The reorder alone is a compensating-wrong
+        # swap; the real fix needs poison detonation-consumption modeled
+        # together. Reverted to tick-then-deal; see
+        # project_spirit_fixture_attribution_20260623.
         self.debuff_bar.tick()
 
         # Poison ticks — each active poison deals damage