[优化] 更新文档

docs/en/reference/index.md

@@ -1,12 +1,13 @@
-# Reference
+# Reference Manuals
 
-You will learn: What information belongs to stable reference materials, and where to look up configurations, commands, APIs, and the repository structure.
+You will learn: Which information belongs to stable reference manuals, and where to look up configurations, commands, APIs, and repository structures.
 
-This section collects stable information at the runtime, interface, and repository levels, suitable for quick lookups during deployment, joint debugging, and troubleshooting.
+This section collects stable information at the runtime, API, and repository layers, suitable for rapid lookup during deployment, integration, and troubleshooting.
 
 | Page | Content |
 | --- | --- |
-| [Configuration Items](./configuration.md) | Server environment variables, command line parameters, runtime Options, and Agent configuration fields |
-| [Commands and Scripts](./cli.md) | Common startup, build, test, install, and uninstall commands |
-| [API Conventions](./api.md) | Response structure, authentication, and path conventions of management and Agent APIs |
-| [Repository Layout](./repository.md) | Responsibilities of `openflare_server`, `openflare_agent`, `openflare_server/web`, and `docs` |
+| [Configuration Options](./configuration.md) | Server environment variables, CLI arguments, runtime Options, and Agent configuration parameters |
+| [CLI Commands](./cli.md) | Common CLI commands for starting, building, testing, installing, and uninstalling |
+| [API Conventions](./api.md) | Response structures, authentication, and routing paths for Admin and Agent APIs |
+| [Repository Structure](../design/repository.md) | Scope of responsibilities and folder layering of the Server, Agent, Relay, and Client |
+| [Deployment & Upgrade](../deployment/) | Server and Agent deployment, configuration, and upgrade guides (dedicated section) |