pub const COMPRESSION_BLOCK_START: &str = "<!-- lean-ctx-compression -->";Expand description
Markers of the heavy compression / output-style block — the per-turn payload that drives cross-channel duplication (#684/#548).
render() wraps the compression prompt in these markers for persistent
carriers (the Dedicated and Shared wrappers, i.e. every injected rule
file). This is the single carrier/marker model: coverage and dedup
(core::rules_channel, cli::rules_dedup) detect and thin the payload by
these markers, so the writer and the readers can never disagree again. The
ephemeral Bare MCP-instructions channel deliberately omits the markers —
its inclusion is governed by carrier coverage (client_autoloads_compression),
so a per-session marker would be pure noise.