[Zhangbo-cn]

Summary

• Reloading after a lost lease release no longer waits out the lease.
  • Each page still gets a new session ID. The previous page's ID is now kept in sessionStorage.
  • Before its first request, a reloaded tab releases that previous session, but only when no live page still holds the session's Web Lock.
  • A crashed or killed tab can no longer block its own reload for the 60 s lease.
  • A duplicated tab copies sessionStorage, but it finds the original window's lock still held, so it never releases a live window.
  • Browsers without Web Locks keep the current behavior.
• "Open in another window" has its own error code, project_open_elsewhere.
  • Its zh-CN/en-US text is accurate. English previously said "Project storage is busy".
  • storage_busy again means only a storage lock timeout, which keeps its retries and Retry-After.
  • A fresh window that another live window blocks is refused at once. Only a reloaded tab waits briefly on its own lease.

Linked issue

• Fixes [bug] 工程：租约未释放时刷新被当作其他窗口拒绝，英文提示误报存储繁忙 #277

Labels

• Suggested: type:bug, area:canvas, area:i18n. I can't apply labels from a fork.

Test plan

• Local:
  • pytest: 1581 passed, 98 skipped.
  • npm test: 760 passed, including the new tests/sessionLease.test.ts.
  • tsc --noEmit, npm run build, npm run check:i18n and npm run check:browser-manifest are clean.
  • New gate script tests/browser/session_lease.mjs:
    • Covers zh-CN and en-US.
    • A reload with a dropped release reopens in about 2 s with no 409.
    • A second window is refused with project_open_elsewhere.
    • On main, the same reload times out.
  • scripts/run-browser-suite.mjs passed 20/20 on fresh fixture services.
• Left to CI: Release checks.

Evidence that it works

• N/A for media. This is a behavior and error-code change with no new UI. The browser script above is the evidence:

  PASS en-US: reload reopened in 1932 ms; second window refused: This project is open in another window. Close it there and try again.
  PASS zh-CN: reload reopened in 1918 ms; second window refused: 该项目正在其他窗口中打开，请先关闭后再试。
  

Provider verification

• No provider calls are involved.

Bilingual UI

• zh-CN and en-US backend messages were updated together.