The public leaderboard now scores confidence from real requests

The public Elo Index leaderboard ranks pricing functions on adoption, confidence, speed and cost efficiency. Confidence previously had nothing behind it for any listing: the value a pricing request reports was never kept past the response that carried it, so the confidence component stayed unmeasured for every function on the board.

Confidence is now averaged over the same real consumer requests the adoption count is drawn from: a provider's own calls, demo traffic, pay-per-call traffic and sandbox workspaces still do not count. A function's average confidence is withheld until enough distinct customers have supplied a confidence, a separate floor from the usage counts' own (a function can have enough customers for its counts to publish while only one of them reports a confidence), and shows as unmeasured until then. Once published it is rounded to the nearest 0.05, which hides the exact confidence behind any one request; while few requests carry one, comparing readings can still narrow it to a coarse range.

• Functions with enough real usage can now reach data_status: "measured" on the leaderboard for the first time; a function with published usage but too few customers behind its confidence still reads partial, and one with neither reads unmeasured.