Tool contract 6.2.0

The rankings family, after the Elixir Gym's regression run (feedback #71-#74 and #76, 2026-09-20). The material one is a label: the live Path of Legends board is the API's top 1,000 (probed: limit=5 returns a cursor, limit=1000 and 2000 return 1,000 rows with none, and a cursor at position 1000 returns an empty page) and every surface that served it described a rating floor. The recorder stores exactly what the API returns (Iceland's board is two rows); nothing was dropped, and the cutoff rising through a season is correct - the word was wrong.

• snapshot.depth (1,000 on a live board, 9,999 on a season final) and snapshot.full on rankings_players, rankings_clans and rankings_clan_ladder; snapshot.floor_rating (the last place's rating) on the player boards. A full board carries a note saying whose cut it is (truncated: false there means the API served nothing past depth) and that floor_rating is a cutoff that moves, not a qualification threshold: a player or clan can leave the board without losing rating. The standing floor note describes both regimes, and the two 'rated_players rises through a season' clauses are gone - it moves with the cutoff as well as with play, and can fall while every one of a clan's players improves.
• rankings_timeline: the board curve's points carry depth, full and floor_delta (the cutoff's move since the previous point); a clan's points carry board_full and board_floor_rating beside rated_players; a note counts the points at depth. A season final is described as the API's 9,999 places, cut mid-tie (S135 ends in a nine-way tie at #9999), not 'full depth'.
• rankings_timeline names the recording horizon (feedback #72): meta.recorded_since on every rankings read, and a window that starts a day or more before the board's first snapshot echoes applied.window.partial: true with covers (the recorded span, or null when none of the window is) and a note - 'unrecorded for the window, not unchanged' when the series is empty, 'covers 2026-09-11 onward' when it is clipped. rankings_players and rankings_clans read the horizon from the table on an as_of before it, instead of a date in the code; rankings_clans gains the as_of sentence it lacked.
• pol_final (feedback #73): applied.season is always echoed (the resolved ordinal, or null) with season_requested beside it, and a miss says which of four things it is - a season that has not happened (naming the current one), the season in progress (naming when its final is fetched), a season before the ranked ladder began at S89 (the number a player reads off the in-game Pass, with the pointer to game_clock), or a settled season the schedule has not fetched yet. No pol_final note offers live: true, which the tool refuses.
• Every published input schema declares verbosity (feedback #74): the eleven two-size tools in their own words, the rest as accepted-and-ignored. 6.0.0 accepted the argument server-side while the schemas still said additionalProperties: false without it, so a client that validates arguments before dispatch refused the call locally and never saw the note.

Additive.