Improve strategy plugin alert copy

[Pigbibi]

Summary

• format strategy plugin alert emails as mobile-friendly field lines
• localize boolean values before rendering alert body
• bump QuantPlatformKit to 0.7.27

Tests

• PYTHONPATH=src python -m unittest tests/test_strategy_plugins.py -v
• PYTHONPATH=src pytest tests/test_strategy_plugin_email_notifications.py tests/test_strategy_plugin_sms_notifications.py tests/test_strategy_plugin_alert_dispatcher.py tests/test_strategy_plugins.py
• PYTHONPATH=src ruff check .

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep backward-compatible translation fallback for alert fields

In build_strategy_plugin_alert_messages, the alert body now relies on new keys (strategy_plugin_alert_plugin/status/action/mode) and no longer calls the existing strategy_plugin_line key that prior translators already implement. For deployments whose translator dictionaries were not updated in lockstep, these fields now fall back to hardcoded English, producing mixed-language alert bodies and a localization regression introduced by this commit. Consider preserving a compatibility path (e.g., fallback to strategy_plugin_line when the new keys are missing) so patch upgrades do not silently degrade translated alerts.

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