import type { CallId } from '@deepseek-ai/dsh-llm';
/** Character-budget policy for deterministic tool-result pruning. */
export interface ToolResultPruneConfig {
    /** Prune when total text exceeds this many Unicode code points. Defaults to `8192`. */
    thresholdChars?: number;
    /** Maximum leading Unicode code points retained. Defaults to `4096`. */
    headChars?: number;
    /** Maximum trailing Unicode code points retained. Defaults to `1024`. */
    tailChars?: number;
}
/** Validated, detached, deeply immutable pruning configuration. */
export interface ResolvedConfig {
    readonly thresholdChars: number;
    readonly headChars: number;
    readonly tailChars: number;
}
/** Cited source event and size accounting for one landed surface replacement. */
export interface PrunedEntry {
    /** Full-fidelity tool-result event shadowed by the replacement. */
    readonly originalSeq: number;
    /** Newly appended pruned tool-result event. */
    readonly replacementSeq: number;
    /** Tool call shared by the original and replacement. */
    readonly callId: CallId;
    /** Original text size in Unicode code points. */
    readonly charsBefore: number;
    /** Replacement text size in Unicode code points. */
    readonly charsAfter: number;
}
/** Aggregate outcome of one stable-surface pruning pass. */
export interface PruneResult {
    /** Replacements in the snapshotted surface order. */
    readonly pruned: readonly PrunedEntry[];
    /** Total Unicode code points removed across replacements. */
    readonly charsRemoved: number;
}
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