Observed

The platform count has exceeded the marketed "22" (Photon iMessage, WhatsApp Business Cloud API, SimpleX, Raft added in v0.17.0); exact recount not done this pass. Six adapters are natively maintained (rest community, no SLA), and all platforms still share a single event loop — one network flake can cascade (#21026, OPEN). Confirmed history: Slack cross-channel send fixed (PR #16198 / #15927); Discord non-response (#16744) closed not-planned/implemented-on-main.

1. UPDATE 2026-07-09(v0.18.2): #21026 still OPEN (stale since 2026-05-08); Telegram pool-timeout silent-drop path addressed by PR #54121 (#53524 closed completed) but the structural single-loop root cause remains. Status remains partial.