Function walkTree

internal/skills/discovery/discovery.go:840–868

walkTree enumerates files by fetching each tree level individually, avoiding the truncation limit of the recursive tree API. Recursion depth is bounded by maxTreeDepth to prevent unbounded API calls.

(client *api.Client, host, owner, repo, sha, prefix string, depth int)

// avoiding the truncation limit of the recursive tree API. Recursion
// depth is bounded by maxTreeDepth to prevent unbounded API calls.
func walkTree(client *api.Client, host, owner, repo, sha, prefix string, depth int) ([]SkillFile, error) {
	if depth > maxTreeDepth {
		return nil, fmt.Errorf("tree depth exceeds %d levels at %s", maxTreeDepth, prefix)
	}
	apiPath := fmt.Sprintf("repos/%s/%s/git/trees/%s", url.PathEscape(owner), url.PathEscape(repo), url.PathEscape(sha))
	var tree treeResponse
	if err := client.REST(host, "GET", apiPath, nil, &tree); err != nil {
		return nil, fmt.Errorf("could not fetch tree %s: %w", prefix, err)
	}

	var files []SkillFile
	for _, entry := range tree.Tree {
		entryPath := entry.Path
		if prefix != "" {
			entryPath = prefix + "/" + entry.Path
		}
		switch entry.Type {
		case "blob":
			files = append(files, SkillFile{Path: entryPath, SHA: entry.SHA, Size: entry.Size})
		case "tree":
			sub, err := walkTree(client, host, owner, repo, entry.SHA, entryPath, depth+1)
			if err != nil {
				return nil, err
			}
			files = append(files, sub...)
		}
	}
	return files, nil
}

// FetchBlob retrieves the content of a blob by SHA.
func FetchBlob(client *api.Client, host, owner, repo, sha string) (string, error) {