import { z } from 'zod';
export declare const SemanticAssessmentEvidenceSchema: z.ZodObject<{
    modelId: z.ZodOptional<z.ZodString>;
    budgetMs: z.ZodNumber;
    elapsedMs: z.ZodNumber;
    stage: z.ZodEnum<{
        preparing: "preparing";
        "model-selected": "model-selected";
        "adapter-started": "adapter-started";
        "text-received": "text-received";
        finished: "finished";
    }>;
    adapterStartedMs: z.ZodOptional<z.ZodNumber>;
    firstTextMs: z.ZodOptional<z.ZodNumber>;
    nativeFinish: z.ZodOptional<z.ZodEnum<{
        stop: "stop";
        "non-stop": "non-stop";
    }>>;
    outputCharacters: z.ZodNumber;
    validation: z.ZodEnum<{
        invalid: "invalid";
        "not-validated": "not-validated";
        valid: "valid";
        "context-omitted": "context-omitted";
    }>;
}, z.core.$strict>;
export type SemanticAssessmentEvidence = Readonly<z.infer<typeof SemanticAssessmentEvidenceSchema>>;
export type TaskClassifierObservation = {
    readonly stage: 'model-selected';
    readonly modelId: string;
} | {
    readonly stage: 'adapter-started';
} | {
    readonly stage: 'text';
    readonly characters: number;
} | {
    readonly stage: 'finished';
    readonly stopped: boolean;
};
export type TaskClassifierObserver = (observation: TaskClassifierObservation) => void;
/** Request-local milestones, not wire/upload timings, model health or token accounting. */
export declare function assessmentEvidence(budgetMs: number): {
    observe: TaskClassifierObserver;
    finish(validation: SemanticAssessmentEvidence['validation']): SemanticAssessmentEvidence;
};
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