Sentinel: [MEDIUM] Redact PII in logs and limit IMAP processing

[google-labs-jules]

Sentinel Security Fix:

1. Redaction: The IMAP username is now masked in debug logs (e.g., use...@domain.com) to preventing PII leakage.
2. DoS Prevention: A MAX_EMAIL_LIMIT of 10 has been introduced for email processing loops. This prevents the integration from hanging if the target inbox contains thousands of unread messages. The integration will process the backlog in subsequent polling intervals.

This change improves security and stability without altering core functionality.

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PR created automatically by Jules for task 10257809523457852787 started by @clayauld

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[github-actions]

📊 Pull Request Analysis Report

🧪 Test Results

Metric	Value
Total Tests	244
✅ Passed	244
❌ Failed	0
⏭️ Skipped	0
💥 Errors	0
📈 Success Rate	100.0%

📋 Coverage Report

Metric	Value
Overall Coverage	81.7%
Total Lines	2797
Covered Lines	2286
Missing Lines	511

📁 File Coverage Breakdown

• __init__.py: 86.0%
• api_cache.py: 83.5%
• api_client.py: 84.5%
• api_config.py: 75.2%
• api_data_processor.py: 78.9%
• api_error_handler.py: 88.9%
• api_formatter.py: 94.2%
• api_models.py: 95.6%
• config_flow.py: 68.5%
• const.py: 100.0%

🎯 Recommendations

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📊 Analysis generated by GitHub Actions • View detailed test report

[github-actions]

🤖 Automated Code Review

🧪 Test Results

✅ All tests passed! Your changes don't break any existing functionality.

🔍 Linting Results Summary

✅ Black (Code Formatting) - PASSED

✅ Flake8 (Code Quality) - PASSED

✅ isort (Import Sorting) - PASSED

⚠️ MyPy (Type Checking)

custom_components/satcom_forecast/config_flow.py:212: error: Unused "type: ignore" comment  [unused-ignore]
custom_components/satcom_forecast/config_flow.py:212: error: Untyped decorator makes function "async_get_options_flow" untyped  [untyped-decorator]
custom_components/satcom_forecast/config_flow.py:212: note: Error code "untyped-decorator" not covered by "type: ignore" comment

Fix: Add missing type annotations and fix type errors. Common fixes:

• Add return type annotations: def function() -> ReturnType:
• Add parameter type hints: def function(param: ParamType):
• Import needed types: from typing import List, Dict, Optional

✅ Bandit (Security) - PASSED

✅ All Linting Checks Passed!

Great job! Your code meets all the linting standards.

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