Remove the Echo agent

docs/user/develop/basic/index.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write
-index.md: 5fa46806bc195ad2566fc0a29b45eb1dd7a68179
-index.zh.md: a6d238c12841c8c25b00376ee032e5db50fc6b4e
+index.md: d7d657ff7b8cb9001dd5e9c3af658a7a3c45b5b7
+index.zh.md: 7a134f7aaed470b87ee8ca8978dd39593de2651b

docs/user/develop/basic/index.md

@@ -122,24 +122,24 @@ Function form is sufficient in most cases. Use class form when the plugin provid
 
 ## Complete example
 
-`examples/echo-agent/src/echo-tool.ts` is a plugin that registers a tool:
+A minimal tool plugin registers its definition on `ctx.tools`:
 
 ```ts
 import type { Context } from 'cordis'
 import { defineTool } from '@deepseek-ai/dsh-tools'
 
-export const name = 'echo-tool'
+export const name = 'greet-tool'
 export const inject = ['tools']
 
 export function apply(ctx: Context) {
   ctx.tools.register(defineTool({
-    name: 'echo',
-    description: 'Echo the given text back, uppercased.',
+    name: 'greet',
+    description: 'Greet the named person.',
     parameters: {
-      text: { type: 'string', required: true },
+      name: { type: 'string', required: true },
     },
     async execute(args) {
-      return [{ type: 'text', text: `ECHO: ${args.text.toUpperCase()}` }]
+      return [{ type: 'text', text: `Hello, ${args.name}!` }]
     },
   }))
 }

docs/user/develop/basic/index.zh.md

@@ -122,24 +122,24 @@ export default class MyService extends Service {
 
 ## 完整示例
 
-参考仓库中的 `examples/echo-agent/src/echo-tool.ts`，这是一个注册 tool 的插件：
+最小化的工具插件会在 `ctx.tools` 上注册其定义：
 
 ```ts
 import type { Context } from 'cordis'
 import { defineTool } from '@deepseek-ai/dsh-tools'
 
-export const name = 'echo-tool'
+export const name = 'greet-tool'
 export const inject = ['tools']
 
 export function apply(ctx: Context) {
   ctx.tools.register(defineTool({
-    name: 'echo',
-    description: 'Echo the given text back, uppercased.',
+    name: 'greet',
+    description: 'Greet the named person.',
     parameters: {
-      text: { type: 'string', required: true },
+      name: { type: 'string', required: true },
     },
     async execute(args) {
-      return [{ type: 'text', text: `ECHO: ${args.text.toUpperCase()}` }]
+      return [{ type: 'text', text: `Hello, ${args.name}!` }]
     },
   }))
 }