feat: add Anthropic event logging endpoint

Add /api/event_logging/batch endpoint that returns 200 OK.
This is a stub for Anthropic telemetry logging.

PR: ericc-ch#165

Author: jacks0n

README.md

@@ -201,6 +201,7 @@ These endpoints are designed to be compatible with the Anthropic Messages API.
 | -------------------------------- | ------ | ------------------------------------------------------------ |
 | `POST /v1/messages`              | `POST` | Creates a model response for a given conversation.           |
 | `POST /v1/messages/count_tokens` | `POST` | Calculates the number of tokens for a given set of messages. |
+| `POST /api/event_logging/batch`  | `POST` | Anthropic telemetry log endpoint (stub returning 200).       |
 
 ### Usage Monitoring Endpoints
 

src/routes/event-logging/route.ts

@@ -0,0 +1,7 @@
+import { Hono } from "hono"
+
+export const eventLoggingRoutes = new Hono()
+
+eventLoggingRoutes.post("/batch", (c) => {
+  return c.text("OK", 200)
+})

src/server.ts

@@ -4,6 +4,7 @@ import { logger } from "hono/logger"
 
 import { completionRoutes } from "./routes/chat-completions/route"
 import { embeddingRoutes } from "./routes/embeddings/route"
+import { eventLoggingRoutes } from "./routes/event-logging/route"
 import { messageRoutes } from "./routes/messages/route"
 import { modelRoutes } from "./routes/models/route"
 import { tokenRoute } from "./routes/token/route"
@@ -29,3 +30,4 @@ server.route("/v1/embeddings", embeddingRoutes)
 
 // Anthropic compatible endpoints
 server.route("/v1/messages", messageRoutes)
+server.route("/api/event_logging", eventLoggingRoutes)