Address code review: add config conflict error and camelCase rejection test

Agent-Logs-Url: https://github.com/microsoft/beachball/sessions/b10c3147-797f-4524-a56d-1f2537833d47

Author: Copilot

src/__functional__/options/getCliOptions.test.ts

@@ -116,6 +116,12 @@ describe('getCliOptions', () => {
     });
   });
 
+  it('rejects camelCase form of multi-word options', () => {
+    expect(() => getCliOptionsTest(['--gitTags'])).toThrow();
+    expect(() => getCliOptionsTest(['--dependentChangeType', 'patch'])).toThrow();
+    expect(() => getCliOptionsTest(['--disallowedChangeTypes', 'major'])).toThrow();
+  });
+
   it('parses short option aliases', () => {
     const options = getCliOptionsTest(['publish', '-t', 'test', '-r', 'http://whatever', '-y']);
     expect(options).toEqual({ ...defaults, command: 'publish', tag: 'test', registry: 'http://whatever', yes: true });

src/options/getCliOptions.ts

@@ -153,7 +153,10 @@ export function getCliOptions(processOrArgv: ProcessInfo | string[]): ParsedOpti
   };
 
   // Handle --config as alias for --config-path
-  if (commanderOpts.config !== undefined && commanderOpts.configPath === undefined) {
+  if (commanderOpts.config !== undefined) {
+    if (commanderOpts.configPath !== undefined) {
+      throw new Error('Cannot specify both --config and --config-path');
+    }
     // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
     commanderOpts.configPath = commanderOpts.config;
   }