Changed CORS plugin array values to comma-separated strings:
- allow_origins: from JSON array to comma-separated string
- allow_methods: from JSON array to comma-separated string
- allow_headers: from JSON array to comma-separated string
- expose_headers: from JSON array to comma-separated string
API7 Enterprise expects string values with comma-separated items,
not JSON arrays. This fixes the validation error:
"Invalid type. Expected: string, given: array"
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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