/**
 * PromptOptimizer — reduces token count of agent instruction strings.
 *
 * Strategies applied (in order):
 *  1. stripEmojiFromHeaders  — removes leading emoji from markdown headings
 *  2. removeIdentitySection  — deletes the boilerplate "Identity & Memory / Mindset" block
 *  3. removePersonalitySection — deletes "Communication Style / Personality" flavour text
 *  4. collapseBlankLines     — 3+ consecutive newlines → 2
 *
 * Usage:
 *   PromptOptimizer.compress(instructionText)   // all passes
 *   PromptOptimizer.estimateTokens(text)        // rough token count (chars / 4)
 */
export declare class PromptOptimizer {
    /**
     * Strip leading emoji from markdown headings only.
     * "## 🎯 Core Mission" → "## Core Mission"
     * Body text emoji are preserved (they may carry semantic meaning).
     */
    static stripEmojiFromHeaders(text: string): string;
    /**
     * Remove the "Identity & Memory" / "Identity & Mindset" section.
     * This is a ~60-token boilerplate block in every agent that restates the
     * role description already present in the frontmatter and opening sentence.
     *
     * Removes everything from the heading line up to (but not including) the
     * next same-level or higher heading.
     */
    static removeIdentitySection(text: string): string;
    /**
     * Remove the "Communication Style" / "Your Communication Style" section.
     * These personality flavour sections add no operational instruction.
     */
    static removeCommunicationStyleSection(text: string): string;
    /**
     * Collapse 3+ consecutive blank lines into at most 2.
     */
    static collapseBlankLines(text: string): string;
    /**
     * Estimate token count using the ~4 chars per token heuristic.
     * Accurate to within ±15% for English prose and code.
     */
    static estimateTokens(text: string): number;
    /**
     * Apply all compression passes and return the optimised text.
     * Typical savings: 15–25% reduction in token count.
     */
    static compress(text: string): string;
    /**
     * Return a report comparing original vs compressed sizes.
     */
    static report(original: string, compressed: string): {
        originalTokens: number;
        compressedTokens: number;
        savedTokens: number;
        reductionPct: number;
    };
}
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