export type ChannelSource = string;
export interface ChannelSafetyResult {
    blocked: boolean;
    reason?: string;
}
export declare function registerProtectedPaths(paths: string[]): void;
export declare function stripShellPrefixBeforeHeredoc(command: string): string;
export declare function isCommandDangerous(command: string): ChannelSafetyResult;
export declare function isPathProtected(targetPath: string): boolean;
export type TextApprovalResult = {
    matched: true;
    decision: 'allow_once' | 'deny';
} | {
    matched: false;
};
export declare function matchTextApproval(text: string): TextApprovalResult;
export declare function classifyFileKind(filePath: string): 'image' | 'video' | 'document' | null;
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