- lib/git.ts: add branch:"main" to Gitea POST payload (required when repo has no
branch yet or is freshly initialized); treat 409 on GET same as 404 (empty repo
has no tree, Gitea returns 409 Conflict — proceed to create first file)
- lib/git.ts: improve 404 error hint with actionable checklist (URL format,
owner/repo names, token scope, repo existence)
- settings.tsx: add Gitea info card clarifying URL format (no /api/v1), token
format (raw value only, no "Bearer" prefix), repo initialization requirement
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>