Issue 14691 host-side reproduction, 2026-10-22 UTC
Machine: fs-29, Linux x86_64
Main commit: 8d3b061121
Runtime: vp run dev --no-seed; two vp run dev:server --no-seed instances.
Three isolated T3 homes in issue worktree; loopback ports 14241,14242,14243.
No live user data or provider sessions used.

Pair all three using their one-time startup credentials and OAuth token exchange.
GET /api/orchestration/shell, authenticated, x-t3-orchestration-protocol: 2:
A returned in 15ms; B 13ms; C 12ms.

Create project B via POST /api/projects/mutate.
Create stopped thread B through real /ws Effect RPC orchestration.dispatchCommand.
Rename B via thread.metadata.update, then concurrently read B and C shells.
Local HTTP proxy on port14244 delays C shell response only.
Actual script stdout:
main runtime: three independent isolated servers, protocol 2
{"CdelayMs":0,"environment":"B","returnedMs":36,"title":"v-delay-0"}
{"CdelayMs":0,"environment":"C","returnedMs":47}
{"CdelayMs":4500,"environment":"B","returnedMs":20,"title":"v-delay-4500"}
{"CdelayMs":4500,"environment":"C","returnedMs":4534}
{"CdelayMs":6500,"environment":"B","returnedMs":27,"title":"v-delay-6500"}
{"CdelayMs":6500,"environment":"C","returnedMs":6520}

Scope: this demonstrates host independence and that renamed B data is available
while C remains pending. It does NOT execute SwiftUI or demonstrate its display
latency, poll scheduling, client timeout, or a before/after fix result.
No Xcode/iOS SDK or Swift compiler exists on this Linux VM.
All three servers and the proxy were stopped after the run.