R1 — synthetic workspace proof; signed asset tokens are <token>.

=== BEFORE bcee0f5d2872ba193c66ed9ba979bbe424f89ff9 ===
{
  "threadId": "proof-evidence-thread",
  "tabId": "tab_4_160f281c-d463-404b-9bc3-d947ad2bc6ef",
  "navStatus": {
    "_tag": "LoadFailed",
    "url": "http://repro-box.tailnet-repro.ts.net:6034/api/assets/<token>/report.html",
    "title": "",
    "code": -105,
    "description": "ERR_NAME_NOT_RESOLVED"
  },
  "canGoBack": false,
  "canGoForward": false,
  "viewport": {
    "_tag": "freeform",
    "width": 960,
    "height": 640
  },
  "profileId": "default",
  "runtime": "server",
  "updatedAt": "2026-11-10T10:45:16.483Z"
}

Server HTTP transcript:
[10:45:17.002] INFO (#113807) http.span=365ms: Sent HTTP response
  http.method: POST
  http.url: /api/observability/v1/traces
  http.status: 204

=== AFTER e66d82919a27f1842525840588f5ad8ec8b496e6 ===
{
  "threadId": "proof-evidence-thread",
  "tabId": "tab_1_22922824-cceb-4d39-ae39-9bc8f0e55ad4",
  "navStatus": {
    "_tag": "Success",
    "url": "http://repro-box.tailnet-repro.ts.net:6035/api/assets/<token>/report.html",
    "title": "Workspace report"
  },
  "canGoBack": true,
  "canGoForward": false,
  "viewport": {
    "_tag": "freeform",
    "width": 960,
    "height": 640
  },
  "profileId": "default",
  "runtime": "server",
  "updatedAt": "2026-11-10T10:45:41.322Z"
}

Server HTTP transcript:
[10:45:40.979] INFO (#39888) http.span=374ms: Sent HTTP response
  http.method: POST
  http.url: /api/observability/v1/traces
  http.status: 204
[10:45:41.263] INFO (#39910) http.span=13ms: Sent HTTP response
  http.method: GET
  http.url: /api/assets/<token>/report.html
  http.status: 200
[10:45:42.216] INFO (#39928) http.span=187ms: Sent HTTP response
  http.method: POST
  http.url: /api/observability/v1/traces
  http.status: 204