/**
 * variableToBacktrackTrace — serialize a JOINED VARIABLE LIFE
 * ({@link AgentVariableSlice}, from `traceVariable` / `joinVariableSlice`) onto
 * the same BacktrackTrace board agentThinkingUI's <BacktrackView> renders.
 *
 * The third sibling of that board, and the most literal one:
 *   - `toBacktrackTrace`      — a LOCALIZER REPORT (scored suspects, ablation
 *     verdicts): proxy ranking, causal stamps.
 *   - `sliceToBacktrackTrace` — a footprintjs DEPENDENCY SLICE: exact
 *     structure, no influence claims.
 *   - THIS ONE — one variable's recorded LIFE: every write and every read, in
 *     commit order, labeled with the loop it happened in and the agent source
 *     it introduced.
 *
 * Same board, honestly weakest chips:
 *   - `mode` is ALWAYS `'correlational'`. Nothing here was ablated — the join
 *     measures nothing — so the causal chip is unreachable by construction.
 *   - every card is `upperBound: true`: the score is `1/(1+age)` over write
 *     recency, a deterministic LAYOUT AID, not evidence of anything.
 *   - the claims lines say out loud that these moments are STRUCTURAL FACTS —
 *     recorded reads and writes — so a reader can tell this board apart from an
 *     influence board at a glance.
 *   - footprintjs's honesty notes ride along verbatim, and honest ABSENCE
 *     renders an empty board that says why, never a fabricated suspect.
 *
 * Pure mapping, no UI dependency, framework-agnostic JSON on both sides — the
 * human and the LLM triage the SAME artifact.
 */
import type { BacktrackTrace } from './toBacktrackTrace.js';
import type { AgentVariableSlice } from './variable-recall.js';
export interface VariableToBacktrackTraceOptions {
    /** The visible outcome being questioned (the board's answer bubble). */
    readonly answer: {
        readonly text: string;
        readonly label?: string;
        readonly tone?: 'error' | 'question';
    };
    /** Headline question. Default: `What happened to '<key>'?`. */
    readonly claim?: string;
    /** How the latest writer renders: rule diamond or LLM brain. Default 'rule'. */
    readonly decidedAtKind?: 'llm' | 'rule';
    /** Override the mode chip label. */
    readonly modeLabel?: string;
    readonly agent?: string;
    readonly model?: string;
    /** Max suspect cards (one per write). Default 6. The rest fold into one line. */
    readonly maxSuspects?: number;
}
/**
 * Serialize a joined variable life for agentThinkingUI's BacktrackView.
 * See the module doc — structural honesty is the whole design.
 */
export declare function variableToBacktrackTrace(agentSlice: AgentVariableSlice, opts: VariableToBacktrackTraceOptions): BacktrackTrace;