test(web-server): cover profile and variant target parsing

- export route target parsers for direct unit coverage

- verify accepted and rejected target payloads for both route modules

src/web-server/routes/profile-routes.ts

@@ -18,7 +18,7 @@ import { updateSettingsFile } from './route-helpers';
 
 const router = Router();
 
-function parseTarget(rawTarget: unknown): TargetType | null {
+export function parseTarget(rawTarget: unknown): TargetType | null {
   if (rawTarget === undefined || rawTarget === null || rawTarget === '') {
     return null;
   }

src/web-server/routes/variant-routes.ts

@@ -24,7 +24,7 @@ import {
 
 const router = Router();
 
-function parseTarget(rawTarget: unknown): TargetType | null {
+export function parseTarget(rawTarget: unknown): TargetType | null {
   if (rawTarget === undefined || rawTarget === null || rawTarget === '') {
     return null;
   }

tests/unit/web-server/target-parse-routes.test.ts

@@ -0,0 +1,27 @@
+import { describe, expect, it } from 'bun:test';
+
+import { parseTarget as parseProfileTarget } from '../../../src/web-server/routes/profile-routes';
+import { parseTarget as parseVariantTarget } from '../../../src/web-server/routes/variant-routes';
+
+describe('route target parsing', () => {
+  it('accepts valid target values', () => {
+    expect(parseProfileTarget('claude')).toBe('claude');
+    expect(parseProfileTarget('DROID')).toBe('droid');
+    expect(parseVariantTarget(' claude ')).toBe('claude');
+    expect(parseVariantTarget('droid')).toBe('droid');
+  });
+
+  it('returns null for invalid target values', () => {
+    expect(parseProfileTarget('glm')).toBeNull();
+    expect(parseProfileTarget('')).toBeNull();
+    expect(parseVariantTarget('factory')).toBeNull();
+    expect(parseVariantTarget('  ')).toBeNull();
+  });
+
+  it('returns null for non-string values', () => {
+    expect(parseProfileTarget(undefined)).toBeNull();
+    expect(parseProfileTarget(null)).toBeNull();
+    expect(parseVariantTarget(123)).toBeNull();
+    expect(parseVariantTarget({ target: 'claude' })).toBeNull();
+  });
+});