Refine AGENTS.md guidance

[PeterDaveHello]

User description

• Add concise architecture summary for geoip2, realip, ipinfo configs
• Inline nginx-only note into overview for clearer scope
• Note quick nginx -t check and that GeoLite2 updates require rebuild

GitHub Copilot Summary:

This pull request updates the AGENTS.md documentation to clarify the architecture and operational details of the ipinfo.tw project. The changes improve the explanation of how nginx is used to serve IP information, provide a more complete overview of configuration files, and offer additional tips for building and maintaining the service.

Architecture and configuration documentation improvements:

• Expanded the project overview to specify that all functionality is configured via nginx directives, with no application code layer.
• Added a dedicated architecture section describing the roles of key nginx configuration files (geoip2.conf, realip.conf, and ipinfo.conf) and how they work together to produce responses.

Build and maintenance process updates:

• Added a recommended quick syntax check command for nginx after building the Docker image to catch configuration errors early.
• Clarified that updating the GeoLite2 databases requires rebuilding the Docker image, since the databases are fetched during the build stage.

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PR Type

Documentation

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Description

• Clarify nginx-only architecture with no application code layer

• Add dedicated architecture section describing config file roles

• Include quick nginx syntax check command for post-build validation

• Emphasize GeoLite2 database updates require image rebuild

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Diagram Walkthrough

flowchart LR
  A["Project Overview"] -->|"Add nginx-only note"| B["Enhanced clarity"]
  C["Architecture Section"] -->|"New: geoip2, realip, ipinfo roles"| D["Config file documentation"]
  E["Build Commands"] -->|"Add nginx -t check"| F["Post-build validation"]
  G["Implementation Notes"] -->|"Emphasize rebuild requirement"| H["GeoLite2 update guidance"]

File Walkthrough

Relevant files

Documentation

AGENTS.md Enhance documentation with architecture and build guidance AGENTS.md Added "configured entirely via nginx directives with no application code layer" to project overview for architectural clarity Inserted new architecture paragraph describing roles of geoip2.conf, realip.conf, and ipinfo.conf configuration files Added quick syntax check command docker run --rm ipinfo.tw:local nginx -t to build and test section Enhanced implementation notes to explicitly state that GeoLite2 database updates require image rebuild +5/-3

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Summary by CodeRabbit

• Documentation
  • Expanded architecture overview to clarify configuration is handled via nginx directives (no app-layer config).
  • Renamed and expanded the section describing key configuration files and their roles.
  • Clarified that GeoLite2 databases are fetched at image build time and the image must be rebuilt to apply updates.

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