PR 27537 real environment verification
head aa2ff9c89407908f54bd9ab05c25c151bd2e8a17
main 8b74a69019 (github/main at verification)

Main and head each installed with vp i and ran vp run dev in the background, one at a time.
Web client: repo playwright-core, /usr/bin/google-chrome.
Real provider: Codex gpt-6.1-sol through local proxy.
Projects and threads created in web UI. Site authored by real provider turn outside app repository.

Main timing attempts (same-document then unsafe-port navigation): 15 recorded
Main timing attempts (load-time redirect to unsafe port): 60 recorded
No stale Success after failed event observed. The exact original race was NOT reproduced.

Head timing attempts: 15 recorded; no stale Success after failure observed.

Head real preview events (UI and provider tabs):
[
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:1/missing",
    "title": ""
  },
  {
    "type": "failed",
    "url": "http://127.0.0.1:1/missing",
    "code": -2,
    "description": "ERR_UNSAFE_PORT"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9876/next",
    "title": ""
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/next",
    "title": "Next page"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9876/",
    "title": ""
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/",
    "title": "Navigation check"
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/#section",
    "title": "Navigation check"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9876/next",
    "title": ""
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/next",
    "title": "Next page"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9876/",
    "title": ""
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/#section",
    "title": "Navigation check"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9877/missing",
    "title": ""
  },
  {
    "type": "failed",
    "url": "http://127.0.0.1:9877/missing",
    "code": -102,
    "description": "ERR_CONNECTION_REFUSED"
  },
  {
    "_tag": "Loading",
    "url": "http://127.0.0.1:9876/",
    "title": ""
  },
  {
    "_tag": "Success",
    "url": "http://127.0.0.1:9876/",
    "title": "Navigation check"
  }
]

Blacksmith commands:
vp i && vp test run apps/server/src/preview/ServerBrowser.test.ts
49 tests passed.
vp run check:changed e5909e53c32a9d5b51caf6352d1f17fd73e86db7

  pass  format  0.2s
  pass  lint  0.4s
  pass  knip 1/2  5.3s
  pass  knip 2/2  11.5s
  pass  graphql (apps/server)  0.4s
  pass  typecheck (3 packages)  7.4s
  pass  test (2 files)  10.0s
  CI also runs: full test suites, build
  unused patch check skipped: no dependency files changed
  pass not cached: files changed during the run