feat: v0.3.0d — add PR checks, iostreams, aliases, and broad enhancements

Add PR checks command, iostreams/text packages for colored table output,
top-level run/workflow aliases matching gh CLI structure. Enhance actions,
issues, PRs, releases, repos, labels, milestones, and wiki commands with
improved flags, JSON output, and error handling.

internal/git/git.go

@@ -114,6 +114,48 @@ func parseGitConfig(configPath string) (string, error) {
 	return "", fmt.Errorf("no origin remote found in git config")
 }
 
+// GetCurrentBranch returns the name of the currently checked-out branch.
+func GetCurrentBranch() (string, error) {
+	gitDir, err := findGitDir()
+	if err != nil {
+		return "", err
+	}
+
+	headPath := filepath.Join(gitDir, "HEAD")
+	data, err := os.ReadFile(headPath)
+	if err != nil {
+		return "", fmt.Errorf("failed to read .git/HEAD: %w", err)
+	}
+
+	headStr := strings.TrimSpace(string(data))
+	if strings.HasPrefix(headStr, "ref: refs/heads/") {
+		return strings.TrimPrefix(headStr, "ref: refs/heads/"), nil
+	}
+
+	return "", fmt.Errorf("HEAD is not on a branch (detached HEAD)")
+}
+
+// findGitDir searches for the .git directory starting from the current directory
+func findGitDir() (string, error) {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return "", fmt.Errorf("failed to get current directory: %w", err)
+	}
+
+	dir := cwd
+	for {
+		gitDir := filepath.Join(dir, ".git")
+		if info, err := os.Stat(gitDir); err == nil && info.IsDir() {
+			return gitDir, nil
+		}
+		parent := filepath.Dir(dir)
+		if parent == dir {
+			return "", fmt.Errorf("not in a git repository")
+		}
+		dir = parent
+	}
+}
+
 // parseRemoteURL extracts owner/name/hostname from various git URL formats:
 // - https://codeberg.org/owner/name.git
 // - git@codeberg.org:owner/name.git