Add Kiai-decided metrics; keep Kiai at +2 (6.6, D47)

Report how often a Tecnica is played and how often Kiai decides a
Kumite or an Exam fight. The tie rule moves to RulesConfig.attacker_wins,
shared by the engine and the metric; games are unchanged. RULES.md drops
the Kiai +1 and catch-up variants from the rules under test.

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

src/dojo/report.py

@@ -24,6 +24,9 @@ def format_summary(summary: Summary) -> str:
         f"Longest chain   {_spread(summary.max_chain)}  (Kumite in one turn, per game)",
         f"Exam            {summary.exam_attempts_per_game:.2f} attempts/game, "
         f"{summary.exam_success:.0%} passed, {summary.exam_challengers:.2f} challengers/game",
+        f"Tecnica         played in {summary.tecnica_rate:.0%} of Kumite; Kiai decided "
+        f"{summary.kiai_decided_rate:.0%} of Kumite, {summary.exam_kiai_decided_rate:.0%} of "
+        "Exam fights",
         f"Income/turn     {income}",
         f"Square income   home {summary.square_income_home_per_turn:+.2f}/turn, "
         f"away {summary.square_income_away_per_turn:+.2f}/turn (net)",