In 1.12.1 a verb's effect applies inside the call, whether from a click, `OnUpdate` or an event handler. Here, calls from `OnUpdate` and handlers queued until the next lend, so `TargetByName(name)` then `UnitName("target")` read the old target.
- Every system that runs Lua lends the call host around its body, in one ordered VM pass; the cross-entry queue is gone.
- Seams that changed units through `Commands` queue unit edits, flushed ahead of their readers, so sync points stay at 54 (main: 53).
- Late drains apply before the paint; a CVar or follow ask lands the same frame.
- The actionable ambiguity ceiling falls from 3079 to 1750.
Tests: an `OnUpdate` cast and a handler's cast arm inside the call, three same-frame drains, and a census that each schedule flushes after every edit user.
Lua run inside an engine turn still waits for the turn's end.
Part of #1993🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
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