adding better exporting

test/db.test.js

@@ -1,5 +1,5 @@
 import { describe, expect, it, vi } from 'vitest';
-import { createRequestLogger, ensureSchema, insertRequest } from '../src/db.js';
+import { createRequestLogger, ensureSchema, insertRequest, removeNonChatCompletionRequests } from '../src/db.js';
 
 describe('request database', () => {
   it('creates the requests table, compatible columns, and recent-request index', async () => {
@@ -37,6 +37,19 @@ describe('request database', () => {
     ]);
   });
 
+  it('removes requests that are not for the chat completions endpoint', async () => {
+    const pool = { query: vi.fn().mockResolvedValue({ rowCount: 4 }) };
+
+    await expect(removeNonChatCompletionRequests(pool)).resolves.toBe(4);
+
+    expect(pool.query).toHaveBeenCalledOnce();
+    expect(pool.query.mock.calls[0][0]).toContain("split_part(endpoint, '?', 1) <> ALL($1::text[])");
+    expect(pool.query.mock.calls[0][1]).toEqual([[
+      '/oai/v1/chat/completions', '/oai/v1/responses',
+      '/ant/v1/messages', '/ant/v1/v1/messages',
+    ]]);
+  });
+
   it('reports storage failures without rejecting request handling', async () => {
     const onError = vi.fn();
     const logger = createRequestLogger({ query: vi.fn().mockRejectedValue(new Error('database offline')) }, { onError });