/**
 * src/mcp/index.ts — Beacon MCP subsystem entry. Boots a stdio MCP server.
 *
 * Originally `@skillfm/beacon-mcp` (PR #190), merged into `@skillfm/local` 2.7.0
 * as a subcommand on Day 1 (2026-05-01). Invoked via:
 *
 *   npx -y @skillfm/local mcp
 *
 * Lifecycle:
 *   1. loadConfig() — env > config.json > degraded fallback
 *   2. instantiate BrainClient + McpServer(name='skillfm-beacon', v=PKG_VERSION)
 *   3. registerAllTools(server, deps) — 8 real + 25+ placeholder
 *   4. install global error guards (stderr ONLY — stdout is MCP transport)
 *   5. start StdioServerTransport
 *
 * BYOK red line: this file MUST NOT touch the user's LLM API keys, cookies,
 * or vault secrets. The only credential read is SKILLFM_AGENT_TOKEN (an
 * opaque token issued by SkillFM brain).
 *
 * MCP protocol invariant: stdout is reserved for JSON-RPC frames. Any debug
 * output goes through `console.error` (stderr). Calling `console.log` from
 * any imported module corrupts the transport — see exhaustive grep in CI.
 *
 * TODO Week 5:
 *   - HTTP transport mode (via env SKILLFM_BEACON_MCP_HTTP_PORT) — mirrors
 *     skillfm-local's dual transport setup for multi-tenant cloud agents.
 *   - Health-check endpoint exposed via local UDS for the Beacon GUI.
 *   - Self-upgrade probe (npm view + warn if a newer minor is out).
 *   - Structured request log → ~/.skillfm/beacon-mcp/server.log (rotating).
 */
/**
 * Boot the server. Awaits transport.start(); resolves when stdin closes.
 */
export declare function startServer(): Promise<void>;
export { BrainClient } from './brain-client.js';
export { loadConfig } from './config.js';
export { evaluateSuggestion } from './decision-engine.js';
export { loadPrefs, savePrefs, loadRules, saveRules, openSessionCache, BEACON_HOME, } from './cache.js';
export { SkillFmError, SKILLFM_ERROR_CODES } from './errors.js';
export { APRENTICE_CAPABILITIES, getApprenticeCapabilityCatalog, } from '../beacon/apprentice-capabilities.js';
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