/**
 * Context Shadow — A-CTX-0 schema contracts.
 *
 * Shadow mode observes the existing prompt without altering it.
 * No source text is retained in manifests or receipts — only hashes and counts.
 */
export declare const CONTEXT_SHADOW_MANIFEST_VERSION: "context-shadow-manifest/1";
export declare const CONTEXT_C5_VERSION: "context-c5/1";
export type ContextEvidence = "observed" | "configured" | "inferred" | "unknown";
export type ContextShadowSegmentKind = "system" | "mission" | "task" | "workspace" | "diagnostic" | "tool" | "other";
export interface ContextShadowSegmentInput {
    segmentId: string;
    kind: ContextShadowSegmentKind;
    required: boolean;
    text: string;
}
export interface ContextShadowDecisionV1 {
    segmentId: string;
    kind: string;
    /** SHA-256 of segment.text — never the source text itself. */
    contentHash: string;
    estimatedTokens: number;
    /** Always true in shadow mode — actual prompt is never altered. */
    actuallyIncluded: true;
    /** What the shadow compiler would have decided if it controlled selection. */
    proposedDecision: "included" | "excluded";
    reason: "required" | "within_shadow_budget" | "shadow_budget_exhausted" | "required_over_budget";
}
export interface ContextShadowManifestV1 {
    schemaVersion: typeof CONTEXT_SHADOW_MANIFEST_VERSION;
    manifestId: string;
    /** SHA-256 of the canonical JSON of the manifest (excluding manifestId and manifestHash). */
    manifestHash: string;
    /** SHA-256 of the canonical compiler input, for cross-run determinism checks. */
    compilerInputHash: string;
    runId: string;
    taskId?: string;
    adapter: string;
    model?: string;
    capturedAt: string;
    mode: "shadow";
    modelWindowTokens: number | null;
    modelWindowEvidence: ContextEvidence;
    shadowBudgetTokens: number;
    /** SHA-256 of framed source segments — confirms prompt identity without storing content. */
    actualPromptHash: string;
    /** Estimated token count of all segments (actual prompt). */
    actualEstimatedTokens: number;
    /** Estimated token count of shadow-selected segments only. */
    proposedEstimatedTokens: number;
    /** True if required segments alone exceed shadowBudgetTokens. */
    requiredOverBudget: boolean;
    decisions: ContextShadowDecisionV1[];
}
export interface ContextC5EnvelopeV1 {
    schemaVersion: typeof CONTEXT_C5_VERSION;
    resource: "context";
    event: "shadow_compiled";
    runId: string;
    taskId?: string;
    manifestId: string;
    manifestHash: string;
    adapter: string;
    model?: string;
    mode: "shadow";
    actualEstimatedTokens: number;
    proposedEstimatedTokens: number;
    candidateCount: number;
    includedCount: number;
    excludedCount: number;
    requiredOverBudget: boolean;
    modelWindowTokens: number | null;
    modelWindowEvidence: ContextEvidence;
    createdAt: string;
}