654017fb3c
This PR adds a `trace.profiler.serve` option that, when enabled, serves the Firefox Profiler-compatible profile JSON on an ephemeral `127.0.0.1` port and opens `https://profiler.firefox.com/from-url/...` in the user's default browser, à la `samply`. The server shuts down once the profile has been fetched. Compared to `trace.profiler.output`, which writes the profile to a file that the user must then manually upload to `profiler.firefox.com`, this is a single-command workflow not touching the file system. Implementation notes: * `Std.Http.Server` now exposes the bound socket address so the caller can read back the OS-assigned ephemeral port when binding to port `0`. * `addTraceAsMessages` and the import-time trace recording now check a shared `trace.profiler.isExporting` predicate; the previous `trace.profiler.output`-only check would otherwise consume the trace state before serving could see it. |
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