/**
 * Returns `true` if `message` contains at least one bracketed
 * JIRA-style ticket reference (e.g., `[ABC-123]`).
 *
 * @example
 * hasJiraReference("feat: x [ABC-123]");      // true
 * hasJiraReference("Update [ABCD-1] foo");    // true
 * hasJiraReference("ABC-123");                // false (no brackets)
 * hasJiraReference("[abc-123]");              // false (lowercase)
 * hasJiraReference("[A-123]");                // false (single letter prefix)
 */
export declare function hasJiraReference(message: string): boolean;
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