yyqdbngt opened a new pull request, #4102:
URL: https://github.com/apache/rocketmq-dashboard/pull/4102
## Summary
Add a "复制轨迹" (copy trace) button to the message trace tab. It renders
the loaded `TraceRecord` steps as a multi-line text (step name, time and
status/details) and copies it to the clipboard through the new shared
`copyTextToClipboard` util (`navigator.clipboard.writeText` with a hidden
`textarea` + `document.execCommand('copy')` fallback). The button is
disabled while no trace data is loaded.
## Why
Operators debugging a delivery problem often need the trace steps in a
ticket or chat. Previously the steps could only be read on screen, so this
adds one-click extraction of the same data.
## Testing
- `cd web && ./node_modules/.bin/tsc -b tsconfig.app.json` — passes (exit 0).
- `./node_modules/.bin/vitest run
src/pages/instance/__tests__/MessagePageAsyncState.test.tsx`
(Node 20 build server) — 23/23 passed, including the new case asserting the
copied text contains the rendered trace steps and the disabled state with
no trace data.
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