lean-ctx 3.9.19

Context Runtime for AI Agents with CCP. 79 MCP tools, 10 read modes, 95+ compression patterns, cross-session memory (CCP), persistent AI knowledge with temporal facts + contradiction detection, multi-agent context sharing, LITM-aware positioning, AAAK compact format, adaptive compression with Thompson Sampling bandits. Supports 24+ AI tools. Reduces LLM token consumption by up to 99%.
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//! Compression leaderboard (OSS stub).
//!
//! Enterprise provides fleet-wide competitive rankings. OSS returns None.

/// Returns a rank header value if enough data is available (OSS: always None).
pub fn rank_header_if_due() -> Option<String> {
    None
}

/// Computes the current session's rank (OSS: placeholder).
pub fn compute_current_rank() -> RankInfo {
    RankInfo::default()
}

/// Formats the rank into a human-readable message.
pub fn format_rank_message(_rank: &RankInfo) -> String {
    String::new()
}

/// Rank metadata for the current session.
#[derive(Debug, Default, Clone, serde::Serialize)]
pub struct RankInfo {
    pub percentile: Option<f64>,
    pub rank: Option<u32>,
    pub total_participants: Option<u32>,
}