Update client to use /topics endpoint and add getVersion method

- Update listTopics() to use /topics endpoint instead of /
- Add getVersion() method to fetch server version information
- Add VersionResponse type and export it

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/client.ts

@@ -9,6 +9,7 @@ import {
   PollRequest,
   PollOffererResponse,
   PollAnswererResponse,
+  VersionResponse,
   HealthResponse,
   ErrorResponse,
   Side,
@@ -62,6 +63,24 @@ export class RondevuClient {
     return data as T;
   }
 
+  /**
+   * Gets server version information
+   *
+   * @returns Server version (git commit hash)
+   *
+   * @example
+   * ```typescript
+   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
+   * const { version } = await client.getVersion();
+   * console.log('Server version:', version);
+   * ```
+   */
+  async getVersion(): Promise<VersionResponse> {
+    return this.request<VersionResponse>('/', {
+      method: 'GET',
+    });
+  }
+
   /**
    * Lists all topics with peer counts
    *
@@ -81,7 +100,7 @@ export class RondevuClient {
       page: page.toString(),
       limit: limit.toString(),
     });
-    return this.request<ListTopicsResponse>(`/?${params}`, {
+    return this.request<ListTopicsResponse>(`/topics?${params}`, {
       method: 'GET',
     });
   }

src/index.ts

@@ -35,6 +35,7 @@ export type {
   PollOffererResponse,
   PollAnswererResponse,
   PollResponse,
+  VersionResponse,
   HealthResponse,
   ErrorResponse,
   RondevuClientOptions,

src/types.ts

@@ -140,6 +140,14 @@ export interface PollAnswererResponse {
  */
 export type PollResponse = PollOffererResponse | PollAnswererResponse;
 
+/**
+ * Response from GET / - server version information
+ */
+export interface VersionResponse {
+  /** Git commit hash or version identifier */
+  version: string;
+}
+
 /**
  * Response from GET /health
  */