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Recycle terminated Worker execution capacity - #622
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This was referenced Sep 19, 2026
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Advances #81 and #288.
Separates the 64 live dedicated-Worker execution slots from bounded stopped-wrapper retention, so terminated or terminal-startup-failed workers no longer permanently exhaust capacity. Workers are joined and queues cleared before wrapper weakening; instance methods resolve through branded receiver-private state so detached calls reject without dangling callback pointers; stopped wrapper records remain bounded at 256 and reclaim only after weak collection.
Adds native lifecycle regressions plus a browser-shaped contract/profile for 80 terminated workers, 80 terminal startup failures, replacement capacity, stopped-method safety and detached receiver rejection. Validation:
git diff HEAD^ --checkpassed. Builds, runtime/WPT, throughput/memory and packaged Code OSS Worker gates remain unexecuted under the current throughput directive.