feat: Enable /setup-github to always run, and error appropriately (#5653)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/cli/src/services/BuiltinCommandLoader.ts

@@ -32,7 +32,6 @@ import { themeCommand } from '../ui/commands/themeCommand.js';
 import { toolsCommand } from '../ui/commands/toolsCommand.js';
 import { vimCommand } from '../ui/commands/vimCommand.js';
 import { setupGithubCommand } from '../ui/commands/setupGithubCommand.js';
-import { isGitHubRepository } from '../utils/gitUtils.js';
 
 /**
  * Loads the core, hard-coded slash commands that are an integral part
@@ -74,7 +73,7 @@ export class BuiltinCommandLoader implements ICommandLoader {
       themeCommand,
       toolsCommand,
       vimCommand,
-      ...(isGitHubRepository() ? [setupGithubCommand] : []),
+      setupGithubCommand,
     ];
 
     return allDefinitions.filter((cmd): cmd is SlashCommand => cmd !== null);

packages/cli/src/ui/commands/setupGithubCommand.test.ts

@@ -61,6 +61,8 @@ describe('setupGithubCommand', () => {
     vi.mocked(child_process.execSync).mockReturnValue('');
     expect(() => {
       setupGithubCommand.action?.({} as CommandContext, '');
-    }).toThrow('Unable to determine the Git root directory.');
+    }).toThrow(
+      'Unable to determine the GitHub repository. /setup-github must be run from a git repository.',
+    );
   });
 });

packages/cli/src/ui/commands/setupGithubCommand.ts

@@ -19,12 +19,21 @@ export const setupGithubCommand: SlashCommand = {
   description: 'Set up GitHub Actions',
   kind: CommandKind.BUILT_IN,
   action: (): SlashCommandActionReturn => {
-    const gitRootRepo = execSync('git rev-parse --show-toplevel', {
-      encoding: 'utf-8',
-    }).trim();
-
     if (!isGitHubRepository()) {
-      throw new Error('Unable to determine the Git root directory.');
+      throw new Error(
+        'Unable to determine the GitHub repository. /setup-github must be run from a git repository.',
+      );
+    }
+
+    let gitRootRepo: string;
+    try {
+      gitRootRepo = execSync('git rev-parse --show-toplevel', {
+        encoding: 'utf-8',
+      }).trim();
+    } catch {
+      throw new Error(
+        'Unable to determine the GitHub repository. /setup-github must be run from a git repository.',
+      );
     }
 
     const version = 'v0';