[rmcdaniel]

Moves the Unreleased entries under ## 2.26.0 - 2026-11-12 and sets product-train to 2.26.0, as for 2.25.0 (#1101).

Contents:

• Close activity attempts without locking the attempt after task, execution and run #1000 (Close activity attempts without locking them after the task, execution and run (#1000) #1102): close activity attempts without the extra lock.
• Define what continue-as-new does with a run's still-open children #868 (Hand open children to the continued run at continue-as-new (#868) #1104): continue-as-new hands still-open children to the continued run. New migration (workflow_child_supervisions).
• Keep upgrade migrations from locking live tables during backfills #871 (Keep upgrade migrations from locking live tables during backfills (#871) #1106): upgrade migrations no longer lock live tables during backfills.
• Make history budget reads replay-stable for long-lived loops #859 (Read the history budget as of the current workflow step (#859) #1103): replay-stable historyBudgetAtStep() and shouldContinueAsNewAtStep().
• Let failed-run redrive recover ordinary workflows and document it #864 (Redrive failed runs whose completed steps include a child workflow #1109): redrive reuses a completed child workflow.
• Retry a handed-over child's failure under the supervising run's child retry policy #1105 (Retry a handed-over child's failure under its recorded retry policy #1107): a handed-over child's failure is retried under its recorded policy.

Not included: #1108 (namespace isolation). It awaits Security review and needs the server opt-in (server#1170), so it goes in a later release.

After merge, a GitHub release 2.26.0 on the merge commit triggers release verification. Then the docs move stable-releases to 2.26.0.

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud