test: address review feedback in split api-proxy suites

Agent-Logs-Url: https://github.com/github/gh-aw-firewall/sessions/f7448a41-aca5-41bb-98a4-1519b774e020

Author: Copilot

containers/api-proxy/server.proxy.test.js

@@ -10,7 +10,24 @@ const https = require('https');
 const tls = require('tls');
 const { EventEmitter } = require('events');
 
-const { proxyRequest, proxyWebSocket } = require('./server');
+const originalHttpsProxy = process.env.HTTPS_PROXY;
+let proxyRequest;
+let proxyWebSocket;
+
+beforeAll(() => {
+  delete process.env.HTTPS_PROXY;
+  jest.resetModules();
+  ({ proxyRequest, proxyWebSocket } = require('./server'));
+});
+
+afterAll(() => {
+  if (originalHttpsProxy === undefined) {
+    delete process.env.HTTPS_PROXY;
+  } else {
+    process.env.HTTPS_PROXY = originalHttpsProxy;
+  }
+  jest.resetModules();
+});
 
 // ── Helpers for proxyWebSocket tests ──────────────────────────────────────────
 

containers/api-proxy/server.test.js

@@ -12,7 +12,7 @@ const https = require('https');
 const { EventEmitter } = require('events');
 
 // Core proxy functions that remain in server.js
-const { proxyRequest, proxyWebSocket, httpProbe, validateApiKeys, keyValidationResults, resetKeyValidationState, fetchJson, extractModelIds, fetchStartupModels, reflectEndpoints, healthResponse, cachedModels, resetModelCacheState, makeModelBodyTransform, MODEL_ALIASES, buildModelsJson, writeModelsJson, createProviderServer, extractBillingHeaders } = require('./server');
+const { httpProbe, validateApiKeys, keyValidationResults, resetKeyValidationState, fetchJson, extractModelIds, fetchStartupModels, reflectEndpoints, healthResponse, cachedModels, resetModelCacheState, makeModelBodyTransform, MODEL_ALIASES, buildModelsJson, writeModelsJson, createProviderServer, extractBillingHeaders } = require('./server');
 const { composeBodyTransforms } = require('./proxy-utils');
 const { createCopilotAdapter } = require('./providers/copilot');