/**
 * Per-Claude-session lens registry.
 *
 * Claude Code assigns each session (each tab / instance) a stable
 * `CLAUDE_CODE_SESSION_ID` — present BOTH in the bash env of the agent's
 * commands AND in the JSON the statusline receives on stdin. That shared id
 * lets us bind a per-session "lens" (which workspace / project / focus session
 * this session is working through) without any backend change: the pod stays
 * agnostic, the CLI layers session-scoped state on top.
 *
 * This is what makes concurrent Claude Code sessions independent — tab A on
 * workspace Builder + session X, tab B on workspace Marketing + session Y —
 * instead of all sharing one global `~/.synap/config.json` workspace.
 *
 * Registry: ~/.synap/lenses/<session_id>.json
 * Resolution precedence (highest first): explicit flag > session lens >
 *   env SYNAP_WORKSPACE_ID > global config activeWorkspaceId.
 */
export interface SessionLens {
    workspaceId?: string;
    projectId?: string;
    focusSessionId?: string;
    updatedAt?: number;
}
/** The current Claude Code session id, if we're running inside one. */
export declare function getClaudeSessionId(): string | undefined;
export declare function readLens(sessionId: string): SessionLens | null;
/** Merge-write the lens for a session (creates the registry dir on demand). */
export declare function writeLens(sessionId: string, patch: Partial<SessionLens>): SessionLens;
/** Clear one field (or the whole lens) for a session. */
export declare function clearLensField(sessionId: string, field?: keyof SessionLens): void;
/** The active session's lens, or null if not in a Claude session / none set. */
export declare function resolveActiveLens(): SessionLens | null;