Rules v0.8: Fatica on crossing, no Kumite in round 1, board draft 2

- Fatica costs a stripe for every Fatica walked onto; a route whose Fatica
  drops a Brown player below 15 no longer enters the Dojo
- No Kumite in the first round: opponents are treated like meditating pawns
- Board draft 2: two Fatica tolls per quadrant, Allenamento moved to the ring
- Casual bot, --summary-csv, per-seat breakdown and move-options metric
- Out of contention measured at 3 belts
- Plan: Phase 6 baselines, decisions D34-D43

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/test_bots.py

@@ -11,6 +11,7 @@ from dojo.bots import (
     BALANCED,
     FARMER,
     PROFILES,
+    CasualAgent,
     HeuristicAgent,
     Profile,
     RandomAgent,
@@ -57,6 +58,26 @@ def test_heuristic_prefers_allenamento_to_fatica() -> None:
     assert choice == (ALLENAMENTO,)
 
 
+def test_heuristic_walks_around_fatica() -> None:
+    game, _, _ = make_game()
+    put(game, 0, Pos(2, 6), track=3)
+    paths = [(FATICA, Pos(3, 7)), (Pos(2, 7), Pos(3, 7))]
+
+    assert HeuristicAgent().choose_path(game.view(0), paths) == paths[1]
+
+
+def test_heuristic_sees_no_opponent_to_fight_in_round_one() -> None:
+    game, _, _ = make_game()
+    game.round = 1
+    put(game, 0, Pos(4, 3), track=3)
+    put(game, 1, TATAMI, track=3)
+
+    # In round 2 the aggressive bot picks the fight (test_profiles_differ_on_an_even_fight).
+    choice = HeuristicAgent(AGGRESSIVE).choose_path(game.view(0), [(Pos(5, 3),), (TATAMI,)])
+
+    assert choice == (Pos(5, 3),)
+
+
 def test_brown_heuristic_takes_the_exam_when_it_can() -> None:
     game, _, _ = make_game()
     put(game, 0, DOJO_ENTRANCE, track=15)
@@ -108,6 +129,28 @@ def test_heuristic_keeps_the_tecnica_its_profile_ranks_first() -> None:
     assert HeuristicAgent(FARMER).keep_tecnica(game.view(0), Card.UKE, Card.KIAI) is Card.UKE
 
 
+def test_casual_bot_compares_every_move_when_offered_few() -> None:
+    game, _, _ = make_game()
+
+    choice = CasualAgent(random.Random(0)).choose_path(game.view(0), [(FATICA,), (ALLENAMENTO,)])
+
+    assert choice == (ALLENAMENTO,)
+
+
+def test_casual_bot_compares_only_a_sample_of_many_moves() -> None:
+    game, _, _ = make_game()
+    paths = [(Pos(4, col),) for col in range(8)]
+
+    choice = CasualAgent(random.Random(3), sample=1).choose_path(game.view(0), paths)
+
+    assert choice == random.Random(3).sample(paths, 1)[0]
+
+
+def test_casual_bot_needs_a_sample() -> None:
+    with pytest.raises(ValueError, match="sample size 0"):
+        CasualAgent(random.Random(0), sample=0)
+
+
 def play(board: Board, config: RulesConfig, seed: int) -> Game:
     rng = random.Random(seed)
     agents: list[Agent] = [HeuristicAgent(p) for p in PROFILES.values()]