v1.9.192

Irium node v1.9.192 — required: follow mainnet past block 66,400

Mainnet activated the single-payee reward model at block 66,400 on 2026-08-05.
Every prior release, including v1.9.191, predates that gate and stops following
the chain at block 66,399 -- the node keeps peers and reports itself connected
while its applied height simply stops advancing.

This release carries the gate, so a fresh install syncs past 66,400 normally.

What changed since v1.9.191 (11 commits):
  - single-payee reward model, activation-gated, armed at height 66,400
  - the coinbase builder gated on the SAME predicate that validates it
  - receiver-side validation of gossiped candidate dominance_weight
  - identity rate budget charged per pool admission, with onboarding grace
  - proposer-registration outcome logging in both p2p loops
  - docs corrected to describe the live single-payee model
  - pool API returns an honest retirement response instead of fabricating
    pool activity from chain data

Reward model at/after 66,400: the full 50 IRM block subsidy is paid to the
single VRF-selected proposer. Proposer SELECTION is unchanged and remains
hardware-neutral -- CPU, GPU and ASIC have identical odds, and extra hashrate
does not improve them. Only the distribution of the reward changed.