- Changed PHP min-version from 8.0 to 7.4 in appinfo/info.xml
- Replaced all str_contains() calls with strpos() !== false
- GoogleAnalyticsService.php: 1 instance
- LLMService.php: 6 instances
- Verified no other PHP 8.0+ features in use
- Plugin now compatible with PHP 7.4 and PHP 8.0+
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