* [docs] Update agent-network docs for management-owned pricing
The docs still described the retired proxy-side pricing: pricing.Loader,
pricing_path, MiddlewareDataDir, embedded defaults_pricing.yaml, and the
symlink-safe Unix loader. Rewrite them for the current design — management
synthesizes the whole table and ships it in cost_meter's ConfigJSON, so the
proxy carries no price list and has nothing to reload.
## Describe your changes
## Issue ticket number and link
## Stack
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### Checklist
- [ ] Is it a bug fix
- [x] Is a typo/documentation fix
- [ ] Is a feature enhancement
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functionality behavior, CLI / service flags, or introduce a new feature
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## Documentation
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- [ ] I added/updated documentation for this change
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Paste the PR link from https://github.com/netbirdio/docs here:
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Documentation**
* Expanded the security vulnerability reporting policy with private
reporting options and guidance for hosted infrastructure issues.
* Added recommendations for report contents, acknowledgements, severity
assessment, remediation, advisories, and reporter credit.
* Clarified supported versions, advisory distribution, bug bounty
status, and where to report non-security issues.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
