docs(server-hono): add README with usage and configuration reference

Author: nuthalapativarun

.changeset/server-hono-readme.md

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+---
+"@voltagent/server-hono": patch
+---
+
+Add README documentation

packages/server-hono/README.md

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+<div align="center">
+<a href="https://voltagent.dev/">
+<img width="1500" height="276" alt="voltagent" src="https://github.com/user-attachments/assets/d9ad69bd-b905-42a3-81af-99a0581348c0" />
+</a>
+
+<h3 align="center">
+AI Agent Engineering Platform
+</h3>
+
+<div align="center">
+    <a href="https://voltagent.dev">Home Page</a> |
+    <a href="https://voltagent.dev/docs/">Documentation</a> |
+    <a href="https://github.com/voltagent/voltagent/tree/main/examples">Examples</a>
+</div>
+</div>
+
+<br/>
+
+<div align="center">
+
+[![GitHub issues](https://img.shields.io/github/issues/voltagent/voltagent)](https://github.com/voltagent/voltagent/issues)
+[![GitHub pull requests](https://img.shields.io/github/issues-pr/voltagent/voltagent)](https://github.com/voltagent/voltagent/pulls)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![npm version](https://img.shields.io/npm/v/@voltagent/server-hono.svg)](https://www.npmjs.com/package/@voltagent/server-hono)
+[![npm downloads](https://img.shields.io/npm/dm/@voltagent/server-hono.svg)](https://www.npmjs.com/package/@voltagent/server-hono)
+[![Discord](https://img.shields.io/discord/1361559153780195478.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://s.voltagent.dev/discord)
+
+</div>
+
+## @voltagent/server-hono
+
+The default VoltAgent server adapter, built on [Hono](https://hono.dev/). It wires up the routes, handlers, WebSocket support, and OpenAPI/Swagger UI provided by [`@voltagent/server-core`](https://github.com/VoltAgent/voltagent/tree/main/packages/server-core) into a runnable HTTP server.
+
+---
+
+## Install
+
+```bash
+npm install @voltagent/server-hono
+# or
+yarn add @voltagent/server-hono
+# or
+pnpm add @voltagent/server-hono
+```
+
+## Usage
+
+```typescript
+import { VoltAgent, Agent } from "@voltagent/core";
+import { honoServer } from "@voltagent/server-hono";
+import { openai } from "@ai-sdk/openai";
+
+const agent = new Agent({
+  name: "my-agent",
+  instructions: "A helpful assistant",
+  model: openai("gpt-4o-mini"),
+});
+
+new VoltAgent({
+  agents: { agent },
+  server: honoServer(),
+});
+```
+
+This starts an HTTP server exposing the agent/workflow/tool/memory/observability routes defined in `@voltagent/server-core`, along with a Swagger UI for exploring the API.
+
+## Configuration
+
+`honoServer(config)` accepts a `HonoServerConfig`:
+
+| Option            | Type                           | Default               | Description                                                                                                                       |
+| ----------------- | ------------------------------ | --------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
+| `port`            | `number`                       | `3141`                | Port to listen on                                                                                                                 |
+| `hostname`        | `string`                       | `"0.0.0.0"`           | Hostname to bind the server to                                                                                                    |
+| `cors`            | `CORSOptions \| false`         | allows all origins    | CORS configuration, or `false` to disable default CORS                                                                            |
+| `enableSwaggerUI` | `boolean`                      | `true` in development | Enable the `/ui` Swagger UI route                                                                                                 |
+| `resumableStream` | `{ adapter, defaultEnabled? }` | —                     | Configure a [`@voltagent/resumable-streams`](https://github.com/VoltAgent/voltagent/tree/main/packages/resumable-streams) adapter |
+| `configureApp`    | `(app: Hono) => void`          | —                     | Register custom routes/middleware directly on the Hono app                                                                        |
+
+```typescript
+new VoltAgent({
+  agents: { agent },
+  server: honoServer({
+    port: 8080,
+    cors: {
+      origin: "https://example.com",
+      allowMethods: ["GET", "POST", "OPTIONS"],
+    },
+    configureApp: (app) => {
+      app.get("/healthz", (c) => c.text("ok"));
+    },
+  }),
+});
+```
+
+## Authentication
+
+`jwtAuth` provides a ready-to-use JWT `AuthProvider`:
+
+```typescript
+import { jwtAuth } from "@voltagent/server-hono";
+
+const auth = jwtAuth({
+  secret: process.env.JWT_SECRET,
+});
+
+new VoltAgent({
+  agents: { agent },
+  server: honoServer({ auth }),
+});
+```
+
+## Custom Endpoints & App Factory
+
+- `extractCustomEndpoints`, `getEnhancedOpenApiDoc` — helpers for registering custom routes and extending the generated OpenAPI document.
+- `createVoltAgentApp` — builds the underlying Hono app instance for embedding into existing Node.js servers (e.g. NestJS, Express) instead of using `honoServer` directly.
+
+```typescript
+import { createVoltAgentApp } from "@voltagent/server-hono";
+
+const app = createVoltAgentApp(deps, config);
+```
+
+## Documentation
+
+- [VoltAgent Documentation](https://voltagent.dev/docs/)
+- [`@voltagent/server-core`](https://github.com/VoltAgent/voltagent/tree/main/packages/server-core) — the framework-agnostic server core this adapter builds on
+- [Agent Overview](https://voltagent.dev/docs/agents/overview/)
+
+## License
+
+Licensed under the MIT License, Copyright © 2026-present VoltAgent.