Heimdall v0.10.0 Ithaca Hardfork Hits Polygon Mainnet

Heimdall v0.10.0 released for Polygon mainnet. Defines Ithaca hardfork: Amoy activated at block 40,776,000 (2026-07-20), mainnet at 50,185,000 (2026-07-29). All node operators must upgrade immediately for network safety. Install via heimdall-v2.sh with v0.10.0 tag, specify sentry or validator. Verify version prints 0.10.0, then restart service.