/**
 * logger.ts
 *
 * Provides a structured, colour-coded logger for the Playwright Pilot AI MCP server.
 *
 * All output goes to stderr, never stdout. This is critical because the MCP
 * protocol uses stdout exclusively for JSON-RPC messages; mixing log output
 * into stdout would corrupt the MCP communication channel.
 *
 * Each log method corresponds to a different subsystem and renders in a
 * distinct colour so developers can quickly identify which part of the system
 * a message comes from:
 *   - mcp      — magenta  — MCP server and tool dispatch
 *   - ai       — cyan     — AI-related operations
 *   - browser  — blue     — Browser launch, navigation, page state
 *   - executor — green    — Test step execution
 *   - healing  — yellow   — Self-healing attempts and results
 *   - skill    — white    — Skill execution
 *   - error    — red      — Errors and exceptions
 *   - info     — gray     — General informational messages
 *
 * Each message is prefixed with a wall-clock timestamp (HH:MM:SS) and a
 * bracketed subsystem label.
 *
 * Role in the overall flow:
 *   Used by every class and function in the system for diagnostic output.
 */
/**
 * Structured logger with colour-coded per-subsystem log methods.
 * All methods write to stderr.
 */
export declare const logger: {
    /** Log an MCP server or tool dispatch message (magenta). */
    mcp: (msg: string) => boolean;
    /** Log an AI-related message (cyan). */
    ai: (msg: string) => boolean;
    /** Log a browser lifecycle or navigation message (blue). */
    browser: (msg: string) => boolean;
    /** Log a test step execution message (green). */
    executor: (msg: string) => boolean;
    /** Log a healing attempt or result (yellow). */
    healing: (msg: string) => boolean;
    /** Log a skill execution message (white). */
    skill: (msg: string) => boolean;
    /** Log an error or exception (red). */
    error: (msg: string) => boolean;
    /** Log a general informational message (gray). */
    info: (msg: string) => boolean;
};
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