[codex] Delegate strategy plugin manual alerts

[Pigbibi]

Summary

• skip strategy-mounted plugin-bot alerts when the artifact delegates manual review to a notification target
• localize notification-target labels for shared plugin alert messages
• document the delegated notification boundary

Validation

• PYTHONPATH=src python -m pytest tests/test_strategy_plugins.py

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Restrict delegated suppression to manual-review alerts

When a strategy artifact has manual_review_notification_delegated=true, this early return runs before the normal escalation predicates, so a later blocked/blocked signal or other non-manual-review alert with the delegation flag still set produces no plugin-bot message. The contract keeps blocked cases in the plugin-alert stream, so this should only suppress the specific delegated manual-review route/action rather than every alert from that artifact.

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