The Sapling proving parameters belong in this directory (D-305, owner, 2026-09-06).

They are NOT in the repository: two files, 51.5 MB together, identical for everyone, produced by the
Zcash Sapling MPC ceremony. `scripts/stage_sapling_params.sh` copies them here after checking their
size and sha256 against the digests the wallet enforces at run time:

  sapling-spend.params   47 958 396 B  8e48ffd23abb3a5fd9c5589204f32d9c31285a04b78096ba40a79b75677efc13
  sapling-output.params   3 592 860 B  2f0ebbcbb9bb0bcffe95a397e7eba89c29eb4dde6191c339db88570e3f3fb0e4

This file is tracked so that the bundle glob `resources/sapling/*` matches in a fresh checkout: a
build without the parameters staged still succeeds, and the wallet then says the parameters are
missing instead of shipping a broken promise. A release build stages them first.
