Brummel
9c09dfbc8d
Closes family 20: prose-edit cycle is end-to-end. ail merge-prose <original.ail.json> <edited.prose.txt> composes a shaped LLM prompt to stdout. User pipes to their LLM (Claude/etc.), gets new .ail.json, runs ail check, saves. No built-in API client — AILang stays a compiler + tooling, the LLM mediator is supplied externally. PROSE_ROUNDTRIP.md documents the 6-step cycle, the prompt contract (preserve modes/effects/tail flags from original), failure modes, and the design choice to omit an API client. Family 20 now closes: 20a renderer + 20b polish + 20d mediator shipped; 20c rolled into 20a. Three deferred polishes (let-inlining, print sugar, doc-wrap widow control) wait for corpus signal.