Tracks the iroh-0.98 family upgrade in triblespace-net 0.41.0,
which is the proper upstream resolution for the
ed25519-dalek 3.0.0-pre.1 vs ed25519 3.0.0 compile failure
that 0.14.2 worked around with a Cargo.lock pin.

Cargo.toml `triblespace = { version = "0.41" }` (was "0.40")
because cargo treats `^0.40` as not auto-matching 0.41 on
pre-1.0 crates — explicit bump required.

Source identical to 0.14.2.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>