/**
 * PostToolUse hook handler (matcher: Bash).
 *
 * Called after every Bash command Claude Code executes.
 * Detects git checkout/switch commands and swaps CLAUDE.md.
 */
/**
 * Check if a shell command is a git branch switch.
 * Returns the target branch name, or null if not a branch switch.
 *
 * Handles:
 * - git checkout <branch>
 * - git checkout -b/-B <branch>
 * - git switch <branch>
 * - git switch -c/-C <branch>
 * - Compound commands: cmd1 && git checkout main
 * - Filtering: --detach, --, echo/printf (false positives)
 */
export declare function detectBranchSwitch(command: string): string | null;
export declare function handlePostToolUse(): Promise<void>;