diff --git a/tests/integration/proxy/daemon-lifecycle.test.ts b/tests/integration/proxy/daemon-lifecycle.test.ts
index 5a5aa86d..f6cb8e63 100644
--- a/tests/integration/proxy/daemon-lifecycle.test.ts
+++ b/tests/integration/proxy/daemon-lifecycle.test.ts
@@ -80,7 +80,7 @@ describe('openai proxy daemon lifecycle', () => {
     expect((await getOpenAICompatProxyStatus()).running).toBe(false);
   }, 35000);
 
-  it('refuses to replace a running proxy for a different profile', async () => {
+  it('allows different profiles to run on different ports', async () => {
     const firstPort = await getPort();
     const firstSettingsPath = path.join(tempDir, 'hf.settings.json');
     fs.writeFileSync(
@@ -108,7 +108,20 @@ describe('openai proxy daemon lifecycle', () => {
     const firstStart = await startOpenAICompatProxy(firstProfile, { port: firstPort });
     expect(firstStart.success).toBe(true);
 
-    const secondProfile = resolveOpenAICompatProfileConfig('openai', path.join(tempDir, 'openai.settings.json'), {
+    const secondPort = await getPort();
+    const secondSettingsPath = path.join(tempDir, 'openai.settings.json');
+    fs.writeFileSync(
+      secondSettingsPath,
+      JSON.stringify({
+        env: {
+          ANTHROPIC_BASE_URL: 'https://api.openai.com/v1',
+          ANTHROPIC_AUTH_TOKEN: 'sk-openai',
+          ANTHROPIC_MODEL: 'gpt-4.1',
+        },
+      }),
+      'utf8'
+    );
+    const secondProfile = resolveOpenAICompatProfileConfig('openai', secondSettingsPath, {
       ANTHROPIC_BASE_URL: 'https://api.openai.com/v1',
       ANTHROPIC_AUTH_TOKEN: 'sk-openai',
       ANTHROPIC_MODEL: 'gpt-4.1',
@@ -117,11 +130,14 @@ describe('openai proxy daemon lifecycle', () => {
       throw new Error('Expected second OpenAI-compatible profile');
     }
 
-    const secondStart = await startOpenAICompatProxy(secondProfile, { port: await getPort() });
-    expect(secondStart.success).toBe(false);
-    expect(secondStart.error).toContain('Proxy already running for profile "hf"');
+    const secondStart = await startOpenAICompatProxy(secondProfile, { port: secondPort });
+    expect(secondStart.success).toBe(true);
+    expect(secondStart.port).toBe(secondPort);
 
     const health = await fetch(`http://127.0.0.1:${firstPort}/health`);
     expect(health.status).toBe(200);
+
+    const secondHealth = await fetch(`http://127.0.0.1:${secondPort}/health`);
+    expect(secondHealth.status).toBe(200);
   });
 });
diff --git a/tests/unit/proxy/proxy-port-resolver.test.ts b/tests/unit/proxy/proxy-port-resolver.test.ts
new file mode 100644
index 00000000..c29d66c8
--- /dev/null
+++ b/tests/unit/proxy/proxy-port-resolver.test.ts
@@ -0,0 +1,42 @@
+import { afterEach, beforeEach, describe, expect, it } from 'bun:test';
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+import { mutateUnifiedConfig } from '../../../src/config/unified-config-loader';
+import { resolveOpenAICompatProxyPreferredPort } from '../../../src/proxy/proxy-port-resolver';
+
+let originalCcsHome: string | undefined;
+let tempDir: string;
+
+beforeEach(() => {
+  originalCcsHome = process.env.CCS_HOME;
+  tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'ccs-proxy-config-'));
+  process.env.CCS_HOME = tempDir;
+});
+
+afterEach(() => {
+  if (originalCcsHome !== undefined) {
+    process.env.CCS_HOME = originalCcsHome;
+  } else {
+    delete process.env.CCS_HOME;
+  }
+  fs.rmSync(tempDir, { recursive: true, force: true });
+});
+
+describe('resolveOpenAICompatProxyPreferredPort', () => {
+  it('returns the configured profile-scoped port when present', () => {
+    mutateUnifiedConfig((config) => {
+      config.proxy = {
+        ...(config.proxy ?? {}),
+        port: 3456,
+        profile_ports: { ccgm: 3461 },
+      };
+    });
+
+    expect(resolveOpenAICompatProxyPreferredPort('ccgm')).toBe(3461);
+  });
+
+  it('falls back to the shared default port when no profile mapping exists', () => {
+    expect(resolveOpenAICompatProxyPreferredPort('ccg')).toBe(3456);
+  });
+});