feat: add GitHub setup step and enhance setup flow

- Introduced a new GitHubSetupStep component for GitHub CLI configuration during the setup process.
- Updated SetupView to include the GitHub step in the setup flow, allowing users to skip or proceed based on their GitHub CLI status.
- Enhanced state management to track GitHub CLI installation and authentication status.
- Added logging for transitions between setup steps to improve user feedback.
- Updated related files to ensure cross-platform path normalization and compatibility.

apps/server/src/routes/app-spec/parse-and-create-features.ts

@@ -42,7 +42,7 @@ export async function parseAndCreateFeatures(
     logger.info(`Parsed ${parsed.features?.length || 0} features`);
     logger.info("Parsed features:", JSON.stringify(parsed.features, null, 2));
 
-    const featuresDir = await getFeaturesDir(projectPath);
+    const featuresDir = getFeaturesDir(projectPath);
     await fs.mkdir(featuresDir, { recursive: true });
 
     const createdFeatures: Array<{ id: string; title: string }> = [];