# Preview runtime evidence — real dev servers

Before: [36d4d711b79c](https://git.cafe/pingdotgg/t3code/commit/36d4d711b79c73eb33131944f73ea4a8c6156484); after: [2075a09038](https://git.cafe/pingdotgg/t3code/commit/2075a0903833cee1a33dd087f7029ff6e3d1f85f).

Environment: fs-37 Linux x86_64; real per-checkout `T3CODE_DEV_SEED=0 vp run dev`; isolated databases. Node 26.12.1 WebSocket/HTTP driver. No device emulation; viewport, theme, DPR and font scaling N/A for protocol evidence. Viewer browser: server-owned Chromium, 1280×800. Each textual frame is preserved as received; JPEG frame bodies are represented by byte counts because they do not carry protocol errors. Sequence numbers preserve global ordering across per-row sections. Credentials, cookies and one-use tickets are deliberately excluded from recorded headers/URLs.

A synthetic provider executable answers initialization and holds thread/start pending. T3 normally creates the run and issues its scoped MCP credential. The driver uses that credential against the real HTTP /mcp endpoint. No model is invoked, and no preview handler/service is mocked. The unused inspector experiment is not used by these captures.

R9 uses the same local HTML fixture in both runs. Its completed HTTP GET and Success tab state occur at the start of R7 when viewer attachment finishes; they are included in R9 below as cross-references. DNS and unsafe-port failures on base R6 prove attempted navigation, not normalization rejection.

## R1

### before

```jsonl
{"seq":6,"time":"2026-10-27T15:41:16.032Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"3","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":7,"time":"2026-10-27T15:41:16.039Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"3","exit":{"_tag":"Success","value":{"sessions":[],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":31}}}}
{"seq":8,"time":"2026-10-27T15:41:16.039Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"4","tag":"preview.open","payload":{"threadId":"proof-thread-final","url":"about:blank","runtime":"server"},"headers":[]}}
{"seq":9,"time":"2026-10-27T15:41:16.047Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"4","exit":{"_tag":"Failure","cause":[{"_tag":"Fail","error":{"_tag":"PreviewInvalidUrlError","inputLength":11,"reason":"parse","protocol":"https:","cause":{"name":"PreviewUrlNormalizationError","message":"Invalid preview URL (parse: https:; input length 11).","cause":{"name":"TypeError","message":"Invalid URL"}}}}]}}}
{"seq":10,"time":"2026-10-27T15:41:16.047Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"5","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":11,"time":"2026-10-27T15:41:16.050Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"5","exit":{"_tag":"Success","value":{"sessions":[],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":31}}}}
```

### after

```jsonl
{"seq":6,"time":"2026-10-27T15:41:41.274Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"3","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":7,"time":"2026-10-27T15:41:41.331Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"3","exit":{"_tag":"Success","value":{"sessions":[],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":8}}}}
{"seq":8,"time":"2026-10-27T15:41:41.331Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"4","tag":"preview.open","payload":{"threadId":"proof-thread-final","url":"about:blank","runtime":"server"},"headers":[]}}
{"seq":9,"time":"2026-10-27T15:41:41.376Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"4","exit":{"_tag":"Failure","cause":[{"_tag":"Fail","error":{"_tag":"PreviewInvalidUrlError","inputLength":11,"reason":"unsupported-protocol","protocol":"about:","cause":{"name":"PreviewUrlNormalizationError","message":"Invalid preview URL (unsupported-protocol: about:; input length 11)."}}}]}}}
{"seq":10,"time":"2026-10-27T15:41:41.376Z","row":"R1","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"5","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":11,"time":"2026-10-27T15:41:41.382Z","row":"R1","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"5","exit":{"_tag":"Success","value":{"sessions":[],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":8}}}}
```

## R2

### before

```jsonl
{"seq":16,"time":"2026-10-27T15:41:16.062Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"8","tag":"preview.open","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":17,"time":"2026-10-27T15:41:16.066Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"8","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"}}}}
{"seq":18,"time":"2026-10-27T15:41:16.066Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"9","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":19,"time":"2026-10-27T15:41:16.069Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"9","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":33}}}}
{"seq":20,"time":"2026-10-27T15:41:16.070Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"10","tag":"preview.navigate","payload":{"threadId":"proof-thread-final","tabId":"tab_f","url":"about:blank"},"headers":[]}}
{"seq":21,"time":"2026-10-27T15:41:16.075Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"10","exit":{"_tag":"Failure","cause":[{"_tag":"Fail","error":{"_tag":"PreviewInvalidUrlError","inputLength":11,"reason":"parse","protocol":"https:","cause":{"name":"PreviewUrlNormalizationError","message":"Invalid preview URL (parse: https:; input length 11).","cause":{"name":"TypeError","message":"Invalid URL"}}}}]}}}
{"seq":22,"time":"2026-10-27T15:41:16.075Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"11","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":23,"time":"2026-10-27T15:41:16.081Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"11","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":33}}}}
```

### after

```jsonl
{"seq":16,"time":"2026-10-27T15:41:41.398Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"8","tag":"preview.open","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":17,"time":"2026-10-27T15:41:41.402Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"8","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"}}}}
{"seq":18,"time":"2026-10-27T15:41:41.402Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"9","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":19,"time":"2026-10-27T15:41:41.404Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"9","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":10}}}}
{"seq":20,"time":"2026-10-27T15:41:41.404Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"10","tag":"preview.navigate","payload":{"threadId":"proof-thread-final","tabId":"tab_9","url":"about:blank"},"headers":[]}}
{"seq":21,"time":"2026-10-27T15:41:41.408Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"10","exit":{"_tag":"Failure","cause":[{"_tag":"Fail","error":{"_tag":"PreviewInvalidUrlError","inputLength":11,"reason":"unsupported-protocol","protocol":"about:","cause":{"name":"PreviewUrlNormalizationError","message":"Invalid preview URL (unsupported-protocol: about:; input length 11)."}}}]}}}
{"seq":22,"time":"2026-10-27T15:41:41.408Z","row":"R2","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"11","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":23,"time":"2026-10-27T15:41:41.409Z","row":"R2","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"11","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":10}}}}
```

## R3

### before

```jsonl
{"seq":69,"time":"2026-10-27T15:41:20.600Z","row":"R3","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"26","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":70,"time":"2026-10-27T15:41:20.606Z","row":"R3","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"26","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.795Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:18.410Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":44}}}}
{"seq":71,"time":"2026-10-27T15:41:20.606Z","row":"R3","transport":"mcp","direction":"send","frame":{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"preview_open","arguments":{"url":"about:blank"}}}}
{"seq":72,"time":"2026-10-27T15:41:20.642Z","row":"R3","transport":"mcp","direction":"receive","frame":{"status":200,"body":"{\"jsonrpc\":\"2.0\",\"id\":2,\"result\":{\"content\":[{\"type\":\"text\",\"text\":\"Preview automation open failed: Invalid preview URL (parse: https:; input length 11).\"}],\"isError\":true}}\n"}}
{"seq":73,"time":"2026-10-27T15:41:20.643Z","row":"R3","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"27","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":74,"time":"2026-10-27T15:41:20.646Z","row":"R3","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"27","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.795Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:18.410Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":44}}}}
```

### after

```jsonl
{"seq":67,"time":"2026-10-27T15:41:46.251Z","row":"R3","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"26","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":68,"time":"2026-10-27T15:41:46.279Z","row":"R3","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"26","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":69,"time":"2026-10-27T15:41:46.279Z","row":"R3","transport":"mcp","direction":"send","frame":{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"preview_open","arguments":{"url":"about:blank"}}}}
{"seq":70,"time":"2026-10-27T15:41:46.368Z","row":"R3","transport":"mcp","direction":"receive","frame":{"status":200,"body":"{\"jsonrpc\":\"2.0\",\"id\":2,\"result\":{\"content\":[{\"type\":\"text\",\"text\":\"Preview automation open failed: Invalid preview URL (unsupported-protocol: about:; input length 11).\"}],\"isError\":true}}\n"}}
{"seq":71,"time":"2026-10-27T15:41:46.368Z","row":"R3","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"27","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":72,"time":"2026-10-27T15:41:46.372Z","row":"R3","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"27","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
```

## R4

### before

```jsonl
{"seq":79,"time":"2026-10-27T15:41:20.879Z","row":"R4","transport":"mcp","direction":"send","frame":{"jsonrpc":"2.0","id":4,"method":"tools/call","params":{"name":"preview_navigate","arguments":{"tabId":"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb","url":"about:blank","timeoutMs":1500}}}}
{"seq":80,"time":"2026-10-27T15:41:20.900Z","row":"R4","transport":"mcp","direction":"receive","frame":{"status":200,"body":"{\"jsonrpc\":\"2.0\",\"id\":4,\"result\":{\"content\":[{\"type\":\"text\",\"text\":\"Preview automation navigate failed: Invalid preview URL (parse: https:; input length 11).\"}],\"isError\":true}}\n"}}
{"seq":81,"time":"2026-10-27T15:41:20.900Z","row":"R4","transport":"mcp","direction":"send","frame":{"jsonrpc":"2.0","id":5,"method":"tools/call","params":{"name":"preview_status","arguments":{"tabId":"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb"}}}}
{"seq":82,"time":"2026-10-27T15:41:20.916Z","row":"R4","transport":"mcp","direction":"receive","frame":{"status":200,"body":"{\"jsonrpc\":\"2.0\",\"id\":5,\"result\":{\"content\":[{\"type\":\"text\",\"text\":\"{\\\"available\\\":true,\\\"visible\\\":false,\\\"tabId\\\":\\\"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":null,\\\"title\\\":null,\\\"loading\\\":false,\\\"control\\\":{\\\"owner\\\":\\\"agent\\\",\\\"ownedByCaller\\\":true,\\\"generation\\\":0},\\\"dialog\\\":null,\\\"viewportSetting\\\":{\\\"_tag\\\":\\\"fill\\\"},\\\"viewport\\\":{\\\"width\\\":1280,\\\"height\\\":800},\\\"fileChooser\\\":null,\\\"downloads\\\":[],\\\"tabs\\\":[{\\\"tabId\\\":\\\"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":null,\\\"owner\\\":\\\"unclaimed\\\",\\\"ownedByCaller\\\":false,\\\"visible\\\":false},{\\\"tabId\\\":\\\"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":\\\"chrome-error://chromewebdata/\\\",\\\"owner\\\":\\\"unclaimed\\\",\\\"ownedByCaller\\\":false,\\\"visible\\\":false},{\\\"tabId\\\":\\\"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":\\\"chrome-error://chromewebdata/\\\",\\\"owner\\\":\\\"unclaimed\\\",\\\"ownedByCaller\\\":false,\\\"visible\\\":false},{\\\"tabId\\\":\\\"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":\\\"chrome-error://chromewebdata/\\\",\\\"owner\\\":\\\"unclaimed\\\",\\\"ownedByCaller\\\":false,\\\"visible\\\":false},{\\\"tabId\\\":\\\"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb\\\",\\\"url\\\":null,\\\"owner\\\":\\\"agent\\\",\\\"ownedByCaller\\\":true,\\\"visible\\\":false}],\\\"profiles\\\":[{\\\"id\\\":\\\"default\\\",\\\"name\\\":\\\"Default\\\"},{\\\"id\\\":\\\"incognito\\\",\\\"name\\\":\\\"Incognito\\\",\\\"incognito\\\":true}]}\"}],\"structuredContent\":{\"available\":true,\"visible\":false,\"tabId\":\"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":null,\"title\":null,\"loading\":false,\"control\":{\"owner\":\"agent\",\"ownedByCaller\":true,\"generation\":0},\"dialog\":null,\"viewportSetting\":{\"_tag\":\"fill\"},\"viewport\":{\"width\":1280,\"height\":800},\"fileChooser\":null,\"downloads\":[],\"tabs\":[{\"tabId\":\"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":null,\"owner\":\"unclaimed\",\"ownedByCaller\":false,\"visible\":false},{\"tabId\":\"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":\"chrome-error://chromewebdata/\",\"owner\":\"unclaimed\",\"ownedByCaller\":false,\"visible\":false},{\"tabId\":\"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":\"chrome-error://chromewebdata/\",\"owner\":\"unclaimed\",\"ownedByCaller\":false,\"visible\":false},{\"tabId\":\"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":\"chrome-error://chromewebdata/\",\"owner\":\"unclaimed\",\"ownedByCaller\":false,\"visible\":false},{\"tabId\":\"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb\",\"url\":null,\"owner\":\"agent\",\"ownedByCaller\":true,\"visible\":false}],\"profiles\":[{\"id\":\"default\",\"name\":\"Default\"},{\"id\":\"incognito\",\"name\":\"Incognito\",\"incognito\":true}]},\"isError\":false}}\n"}}
{"seq":83,"time":"2026-10-27T15:41:20.916Z","row":"R4","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"29","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
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```

### after

```jsonl
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{"seq":88,"time":"2026-10-27T15:41:46.921Z","row":"R4","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"30","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"},{"threadId":"proof-thread-final","tabId":"tab_d_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","automationOwner":"21367952-7d59-4aa9-a4a4-794ec4e3099f\u000099107e98-2207-4709-95f2-f88a86b24856\u0000proof-thread-final","reveal":true,"revealRequest":{"id":"5e5a8c84-d455-4204-a0e6-ff8972488c14","force":false},"updatedAt":"2026-10-27T15:41:46.711Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":15}}}}
```

## R5 RPC

### before

```jsonl
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{"seq":13,"time":"2026-10-27T15:41:16.056Z","row":"R5 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"6","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"}}}}
{"seq":14,"time":"2026-10-27T15:41:16.056Z","row":"R5 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"7","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":15,"time":"2026-10-27T15:41:16.061Z","row":"R5 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"7","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":32}}}}
```

### after

```jsonl
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{"seq":13,"time":"2026-10-27T15:41:41.389Z","row":"R5 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"6","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"}}}}
{"seq":14,"time":"2026-10-27T15:41:41.389Z","row":"R5 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"7","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":15,"time":"2026-10-27T15:41:41.398Z","row":"R5 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"7","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":9}}}}
```

## R5 MCP

### before

```jsonl
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{"seq":78,"time":"2026-10-27T15:41:20.878Z","row":"R5 MCP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"28","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.795Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:18.410Z"},{"threadId":"proof-thread-final","tabId":"tab_j_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","automationOwner":"62634fb1-3719-4835-9b4e-7120357582e4\u0000c9a50f6a-af6b-4277-b16f-ef0cfeab3b1a\u0000proof-thread-final","reveal":true,"revealRequest":{"id":"ffcd3ffb-b41c-4db1-9cc4-e5988894f300","force":false},"updatedAt":"2026-10-27T15:41:20.861Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":46}}}}
```

### after

```jsonl
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{"seq":76,"time":"2026-10-27T15:41:46.735Z","row":"R5 MCP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"28","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"},{"threadId":"proof-thread-final","tabId":"tab_d_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","automationOwner":"21367952-7d59-4aa9-a4a4-794ec4e3099f\u000099107e98-2207-4709-95f2-f88a86b24856\u0000proof-thread-final","reveal":true,"revealRequest":{"id":"5e5a8c84-d455-4204-a0e6-ff8972488c14","force":false},"updatedAt":"2026-10-27T15:41:46.711Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":15}}}}
```

## R6 RPC

### before

```jsonl
{"seq":24,"time":"2026-10-27T15:41:16.081Z","row":"R6 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"12","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":25,"time":"2026-10-27T15:41:16.084Z","row":"R6 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"12","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":33}}}}
{"seq":26,"time":"2026-10-27T15:41:16.084Z","row":"R6 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"13","tag":"preview.open","payload":{"threadId":"proof-thread-final","url":"mailto:a@b.c","runtime":"server"},"headers":[]}}
{"seq":27,"time":"2026-10-27T15:41:16.087Z","row":"R6 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"13","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"https://mailto:a@b.c/","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.085Z"}}}}
{"seq":28,"time":"2026-10-27T15:41:16.087Z","row":"R6 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"14","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":29,"time":"2026-10-27T15:41:16.090Z","row":"R6 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"14","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"https://mailto:a@b.c/","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.085Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":34}}}}
{"seq":30,"time":"2026-10-27T15:41:16.091Z","row":"R6 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"15","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
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{"seq":32,"time":"2026-10-27T15:41:16.093Z","row":"R6 RPC","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"16","tag":"preview.open","payload":{"threadId":"proof-thread-final","url":"ftp:21","runtime":"server"},"headers":[]}}
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```

### after

```jsonl
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{"seq":35,"time":"2026-10-27T15:41:41.436Z","row":"R6 RPC","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"17","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":10}}}}
```

## R6 MCP

### before

```jsonl
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```

### after

```jsonl
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```

## R7

### before

```jsonl
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```

### after

```jsonl
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{"seq":46,"time":"2026-10-27T15:41:41.884Z","row":"R7","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"20","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":47,"time":"2026-10-27T15:41:41.892Z","row":"R7","transport":"viewer","direction":"receive","frame":{"binaryFrameBytes":34446}}
{"seq":48,"time":"2026-10-27T15:41:41.903Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"20","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":49,"time":"2026-10-27T15:41:41.904Z","row":"R7","transport":"viewer","direction":"send","frame":{"type":"navigate","url":"about:blank"}}
{"seq":50,"time":"2026-10-27T15:41:41.916Z","row":"R7","transport":"viewer","direction":"receive","frame":{"type":"control","canOperate":true,"controller":"you","generation":1,"dialog":null}}
{"seq":51,"time":"2026-10-27T15:41:41.916Z","row":"R7","transport":"viewer","direction":"receive","frame":{"binaryFrameBytes":10252}}
{"seq":52,"time":"2026-10-27T15:41:43.705Z","row":"R7","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"21","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":53,"time":"2026-10-27T15:41:43.711Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"21","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":54,"time":"2026-10-27T15:41:43.711Z","row":"R7","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"22","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":55,"time":"2026-10-27T15:41:43.714Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"22","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":56,"time":"2026-10-27T15:41:43.714Z","row":"R7","transport":"viewer","direction":"send","frame":{"type":"navigate","url":"mailto:a@b.c"}}
{"seq":57,"time":"2026-10-27T15:41:43.716Z","row":"R7","transport":"viewer","direction":"receive","frame":{"type":"control","canOperate":true,"controller":"you","generation":1,"dialog":null}}
{"seq":58,"time":"2026-10-27T15:41:45.515Z","row":"R7","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"23","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":59,"time":"2026-10-27T15:41:45.519Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"23","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
```

## R9 HTTP

### before

```jsonl
{"seq":36,"time":"2026-10-27T15:41:16.109Z","row":"R9 HTTP","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"18","tag":"preview.open","payload":{"threadId":"proof-thread-final","runtime":"server","url":"http://127.0.0.1:40429/proof"},"headers":[]}}
{"seq":37,"time":"2026-10-27T15:41:16.116Z","row":"R9 HTTP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"18","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"http://127.0.0.1:40429/proof","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.112Z"}}}}
{"seq":38,"time":"2026-10-27T15:41:16.116Z","row":"R9 HTTP","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"19","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":39,"time":"2026-10-27T15:41:16.120Z","row":"R9 HTTP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"19","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"https://mailto:a@b.c/","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.085Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"https://ftp:21/","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.094Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"http://127.0.0.1:40429/proof","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.112Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":36}}}}
{"seq":40,"time":"2026-10-27T15:41:16.346Z","row":"R7","transport":"http-fixture","direction":"request","frame":{"method":"GET","url":"/proof"}}
{"seq":48,"time":"2026-10-27T15:41:16.538Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"20","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Loading","url":"https://mailto:a@b.c/","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.322Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Success","url":"http://127.0.0.1:40429/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.404Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":41}}}}
{"seq":55,"time":"2026-10-27T15:41:18.343Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"21","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Success","url":"http://127.0.0.1:40429/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.404Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.795Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":42}}}}
{"seq":57,"time":"2026-10-27T15:41:18.346Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"22","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_e_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.052Z"},{"threadId":"proof-thread-final","tabId":"tab_f","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:16.064Z"},{"threadId":"proof-thread-final","tabId":"tab_i_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"Success","url":"http://127.0.0.1:40429/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.404Z"},{"threadId":"proof-thread-final","tabId":"tab_h_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://ftp:21/","title":"","code":-2,"description":"ERR_UNSAFE_PORT"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.496Z"},{"threadId":"proof-thread-final","tabId":"tab_g_fb4c6336-3c5c-469b-8a01-25a047c3bddb","navStatus":{"_tag":"LoadFailed","url":"https://mailto:a@b.c/","title":"","code":-105,"description":"ERR_NAME_NOT_RESOLVED"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:16.795Z"}],"serverEpoch":"fb4c6336-3c5c-469b-8a01-25a047c3bddb","revision":42}}}}
```

### after

```jsonl
{"seq":36,"time":"2026-10-27T15:41:41.442Z","row":"R9 HTTP","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"18","tag":"preview.open","payload":{"threadId":"proof-thread-final","runtime":"server","url":"http://127.0.0.1:37925/proof"},"headers":[]}}
{"seq":37,"time":"2026-10-27T15:41:41.449Z","row":"R9 HTTP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"18","exit":{"_tag":"Success","value":{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Loading","url":"http://127.0.0.1:37925/proof","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.443Z"}}}}
{"seq":38,"time":"2026-10-27T15:41:41.449Z","row":"R9 HTTP","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"19","tag":"preview.list","payload":{"threadId":"proof-thread-final"},"headers":[]}}
{"seq":39,"time":"2026-10-27T15:41:41.455Z","row":"R9 HTTP","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"19","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Loading","url":"http://127.0.0.1:37925/proof","title":""},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.443Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":11}}}}
{"seq":40,"time":"2026-10-27T15:41:41.594Z","row":"R7","transport":"http-fixture","direction":"request","frame":{"method":"GET","url":"/proof"}}
{"seq":48,"time":"2026-10-27T15:41:41.903Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"20","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":53,"time":"2026-10-27T15:41:43.711Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"21","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":55,"time":"2026-10-27T15:41:43.714Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"22","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
{"seq":59,"time":"2026-10-27T15:41:45.519Z","row":"R7","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"23","exit":{"_tag":"Success","value":{"sessions":[{"threadId":"proof-thread-final","tabId":"tab_8_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.383Z"},{"threadId":"proof-thread-final","tabId":"tab_9","navStatus":{"_tag":"Idle"},"canGoBack":false,"canGoForward":false,"viewport":{"_tag":"fill"},"updatedAt":"2026-10-27T15:41:41.401Z"},{"threadId":"proof-thread-final","tabId":"tab_c_7004cd93-93ff-4108-a954-e3edef72fdb9","navStatus":{"_tag":"Success","url":"http://127.0.0.1:37925/proof","title":"Preview proof"},"canGoBack":true,"canGoForward":false,"viewport":{"_tag":"fill"},"runtime":"server","updatedAt":"2026-10-27T15:41:41.662Z"}],"serverEpoch":"7004cd93-93ff-4108-a954-e3edef72fdb9","revision":13}}}}
```

## Seed and transport setup / cleanup

### before

```jsonl
{"seq":1,"time":"2026-10-27T15:41:15.934Z","row":"setup","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"1","tag":"projects.mutate","payload":{"type":"project.create","commandId":"f0645461-0cee-41d0-b399-40e1e4a86ae7","projectId":"proof-project-final","title":"Preview proof","workspaceRoot":"/tmp/lead-25688-r2/capture/fixture-project-final","createWorkspaceRootIfMissing":true},"headers":[]}}
{"seq":2,"time":"2026-10-27T15:41:15.970Z","row":"setup","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"1","exit":{"_tag":"Success","value":{"id":"proof-project-final","title":"Preview proof","workspaceRoot":"/tmp/lead-25688-r2/capture/fixture-project-final","repositoryIdentity":null,"faviconPath":null,"projectIcon":null,"defaultModelSelection":null,"defaultThreadEnvMode":null,"autoPull":false,"scripts":[],"createdAt":"2026-10-27T15:41:15.940Z","updatedAt":"2026-10-27T15:41:15.940Z","deletedAt":null}}}}
{"seq":3,"time":"2026-10-27T15:41:15.971Z","row":"setup","transport":"rpc","direction":"send","frame":{"_tag":"Request","id":"2","tag":"orchestration.dispatchCommand","payload":{"type":"thread.create","commandId":"58db08c6-c902-4c9c-9cf9-549f0d24eb58","threadId":"proof-thread-final","projectId":"proof-project-final","title":"Preview proof","modelSelection":{"instanceId":"codex","model":"gpt-6.1-sol"},"runtimeMode":"full-access","interactionMode":"default","branch":null,"worktreePath":null,"createdBy":"user","creationSource":"web"},"headers":[]}}
{"seq":4,"time":"2026-10-27T15:41:16.032Z","row":"setup","transport":"rpc","direction":"receive","frame":{"_tag":"Exit","requestId":"2","exit":{"_tag":"Success","value":{"sequence":7}}}}
{"seq":5,"time":"2026-10-27T15:41:16.032Z","row":"setup","transport":"rpc","direction":"seed","frame":{"sequence":7}}
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{"seq":63,"time":"2026-10-27T15:41:20.154Z","row":"MCP setup","transport":"viewer","direction":"close","frame":{"code":1005,"reason":""}}
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```

### after

```jsonl
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```