Contract 6.29.0

The war tools, after the Elixir Gym's first run on them (feedback #140-#142).

• clan_war_trophies on war_history, war_current and war_rivals is said to be what it is: the figure going into the race, not including the week's own trophy_change. After a closed week the clan stood at clan_war_trophies + trophy_change (#140). The values do not change.
• The war output schemas declare clan_war_trophies and our_clan_war_trophies, and call clan_score a deprecated alias instead of "the game's own strength number". The war_rivals note no longer claims the figure is null before 2026-09-17 (#141).
• war_history for a section a season does not have says the week never existed. The check uses that season's own count (four or five sections), not the largest any season has: 136/4 had read "not yet played" (#142).

Notes and schema descriptions; no value changes.