/**
 * Build a platform-appropriate "is this binary on PATH?" command.
 *
 * On Windows, `cmd.exe` doesn't know about `which` — the equivalent is
 * `where`. On macOS/Linux, `which` is the canonical choice. This helper
 * keeps the branching in one place so callers don't duplicate the check.
 *
 * 0706 T-001: foundation for platform-aware agent detection.
 */
export declare function buildDetectCommand(binary: string): string;
/**
 * Async "is this binary on PATH?" probe. Returns true when the binary is
 * found via `which`/`where`, false otherwise. Never throws — non-zero exit
 * codes and spawn failures both resolve to `false`.
 *
 * Intended for use inside agent-registry `detectInstalled` functions where
 * a one-shot "present or not" answer is enough.
 *
 * 0706 T-001: replaces ad-hoc `exec("which X")` strings in agents-registry.ts
 * so Windows installs can detect agents without piping through shell.
 */
export declare function detectBinary(binary: string): Promise<boolean>;
/**
 * Resolve a CLI binary name to its full absolute path.
 *
 * Tries multiple strategies in order:
 *   1. Current PATH via `which` / `where`
 *   2. Login shell PATH (picks up .zshrc/.bashrc additions)
 *   3. npm global bin directory
 *   4. Common installation directories per OS
 *   5. Falls back to bare name (lets spawn produce a clear ENOENT error)
 *
 * Results are cached per binary name for the lifetime of the process.
 */
export declare function resolveCliBinary(name: string): string;
/**
 * Build an enhanced PATH string that includes common binary directories.
 * Use this when spawning child processes to ensure they can find binaries
 * even if the parent process has a limited PATH.
 */
export declare function enhancedPath(currentPath?: string): string;
/** Clear the resolution cache (useful for testing) */
export declare function clearResolveCache(): void;
export declare function enhancedSpawnEnv(baseEnv?: NodeJS.ProcessEnv): NodeJS.ProcessEnv;
/** Test-only: drop the memoized process-env enhanced PATH. */
export declare function _resetEnhancedSpawnEnvCache(): void;