Returns a unified diff (git-compatible format) showing changes between main and branch. The filePath should be URL-encoded if it contains special characters (e.g., pages%2Findex.mdx for pages/index.mdx).
Authentication via JWT token or API key. JWT: Get from Veryfront dashboard. API Key: Format "vf_
Project ID or slug
Branch name
File path (URL-encoded, e.g., pages%2Findex.mdx)
Source version ID to compare from (default: main branch)
Context lines (default: 3)
0 <= x <= 10