/**
 * Auto-detect the current project identifier.
 *
 * Resolution order:
 *   1. CLAUDE_PROJECT_DIR env (set by Claude Code for spawned subprocesses;
 *      points at the actual project root regardless of MCP server spawn cwd)
 *   2. process.cwd()
 *
 * From the resolved directory: try `git remote get-url origin` first
 * (e.g., "user/repo"), then fall back to the directory basename.
 *
 * Cached per-directory. Re-keying by directory means the same long-lived
 * MCP server instance correctly tags memories when reused across projects.
 */
export declare function detectProjectId(): string;