pr https://git.cafe/pingdotgg/t3code/pulls/23461
head 7122c5ad6f1c518a48bcd97957a045a0b8a3ebce
baseline github/main 975b3dc56850d8a22dc90462219e53be95d8dcf7
linux, electron 44.9.3, real codex gpt-6.1-sol via local proxy

setup
- git worktree add ../main github/main; vp i (main)
- exact PR head checkout; vp i (PR)
- background vp run dev, then Vite + native Electron desktop host
- built desktop artifacts on Blacksmith; production boot.cjs used for repeat after dev memory-pressure finding
- project, threads, provider turns and browser tabs created through the app
- counter app created and committed by the real provider, commit 15f3aca

main, real Codex preview tools through desktop relay
console.log(String.fromCharCode(1).repeat(100_000_000))
-> Electron main-process dialog: RangeError: Invalid string length at JSON.stringify -> relay send -> Object.event -> Debugger.onMessage
preview_evaluate -> timeout after 15000 ms
preview_status(other tab) -> timeout after 15000 ms

PR, oversized command reply
preview_evaluate(String.fromCharCode(120).repeat(70 * 1024 * 1024))
-> Protocol error (Runtime.evaluate): CDP payload too large
preview_evaluate(6 * 7) on same tab -> 42
preview_snapshot on same tab -> Count: 1, Worker heartbeats: 101

PR, dev-mode finding
same 100-million-character escaped console event
server /mcp response logged after 15007 ms at 09:25:44 UTC
provider tool completion at 09:38:18 UTC, durationMs 768834
~13 minutes system-wide memory pressure, no OOM kill; exact cause unresolved
second tab subsequently: status/snapshot/click/evaluate all passed

PR, built desktop repeat with Vite stopped
same console event -> Target page, context or browser has been closed (affected relay disconnected)
second tab status -> available
second tab snapshot -> Count: 0, Worker heartbeats: 62
second tab Increment -> succeeded
second tab evaluation -> answer: 42, Count: 1, workerTicks: 67
75 separate server/main-renderer liveness samples across event: 75 passed, zero timeout/error, no additional memory-pressure stalls
thread switching through desktop UI -> switched and restored successfully

supplemental native guest debugger check after detachment, both actual guest pages
existing workers -> 178 to 180 ticks; 183 to 185 ticks
new workers -> each returned 42 and terminated

close/reopen recovery through desktop UI and real provider
closed affected Counter panel; provider opened fresh tab
snapshot -> Count: 0, worker ticks: 3
Increment -> succeeded
evaluate -> answer: 42, Count: 1, worker ticks: 9
final snapshot -> Count: 1, no console entries

Blacksmith
vp run check:changed 3433ba15fdfec1acaad273f293098e773fc97bee
PASS format, lint, knip 1/2, knip 2/2, desktop/scripts typechecks
PASS CdpRelay.test.ts: 11 tests
PASS DesktopBrowserHost.test.ts: 33 tests
44 tests passed
CI at head: 28 successful, 0 pending, 0 failing

unverified: macOS/Windows; native iOS/Android; original reporter Vite page; 560-million-character known outside-relay crash; dev-mode memory-pressure stall cause
no PR source changes