Issue #185: fix archived session deletion

[NWYLZW]

Root cause and user impact

The archived-session row's single-delete trigger stopped the click event on the button itself, so Ant Design's Popconfirm/rc-trigger path did not reliably open. Users received no confirmation, deletion, or error feedback when deleting one archived session, even though batch deletion still worked.

What changed

• Make the single-session confirmation controlled so exactly one row can own the open confirmation at a time.
• Keep the row actions visible while focused or confirming.
• Route single and batch deletion through one guarded helper.
• Deduplicate IDs and block duplicate requests while a deletion is pending.
• Keep failed single deletes open and retryable with clear error feedback.
• Remove only successfully deleted IDs from the SWR cache, then revalidate.
• Preserve batch behavior, including retaining failed selections for retry after a partial failure.

Validation

• Vitest regression suite: 4/4 passed
  • opens one labeled confirmation and cancel preserves the row
  • confirms exactly one delete, guards duplicate pending clicks, and updates the mounted UI
  • keeps a failed delete open and retryable
  • preserves batch deletion for selected archived sessions
• Web-test TypeScript check: PASS
• ESLint: PASS
• dprint: PASS
• Diff verification: PASS — exactly 1 commit and 3 changed files over main
• Independent code review: PASS
• Real Browser / rc-trigger visual runtime verification: pending

Closes #185

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Project	Deployment	Actions	Updated (UTC)
oneworks-dev	Ready	Preview	Jul 30, 2026 7:04am

[github-actions]

Experience Review

Before merge, make sure the PR body contains this completed checklist:

## Experience Review
- [x] 已判断是否需要沉淀经验
- [x] 如需要，已运行 `$post-task-experience-review`
- [x] reviewer PASS 后才进入 merge

Checklist to confirm:

• Decide whether this PR produced reusable project experience.
• If experience should be captured, run $post-task-experience-review.
• Merge only after the independent reviewer reports PASS.

[NWYLZW]

Superseded by merged PR #320, which completed Issue #185 on current main with the reviewed exact scope. Closing this older unmerged PR for audit clarity; its branch is otherwise preserved.

[NWYLZW]

Closed after successor PR #320 merged.