phlex-reactive makes Phlex components reactive without writing Stimulus controllers or hand-picking Turbo Stream targets. Declare actions in Ruby; a single generic client runtime turns clicks and form input into a server round trip that re-renders the component and morphs it back in. Components self-target by a stable DOM id, so the same unit re-renders for client actions AND server-pushed broadcasts. State lives in the database behind a signed identity — no attacker-controlled snapshot. Pairs with pgbus for reliable, transactional, reconnect-safe live updates with no Action Cable and no Redis.