Error Handling & Validation Improvements

[Josephat-S]

What to build

Improve error handling throughout the CLI. Currently, if something goes wrong mid-generation (e.g., network failure during tiged clone, disk full), the error messages are generic. We need specific, actionable error messages.

Files to modify

• src/generate.js
• index.js

Specs

• Detect and handle: network errors (tiged), disk space issues, permission errors, invalid project names.
• If generation fails partway, clean up the partial directory.
• Warn if node_modules already exists in the target directory.
• Warn if selecting Vite SPA for E-Commerce (SEO concern).

Acceptance criteria

• Network failure during template fetch shows: "Could not reach GitHub. Check your internet connection."
• Invalid project name (spaces, uppercase) is caught before generation starts.
• Partial project directory is cleaned up on failure.
• Vite + E-Commerce combination shows a warning (but still allows it).
• All error messages include a suggested fix.

Dependencies

• None