caveman-handofflisted

# caveman-handoff ## Mission Take the verbose handoff package produced by `handoff-compiler` and compress it to caveman grammar so it survives cross-model + cross-harness switches at minimum token cost. Preserve every fact, file path, exact error string, decision, and the `prompt-context-engine` brief diff. Never drop technical substance. ## Caveman compression rules Drop: - Articles (a / an / the) - Filler (just / really / basically / actually / simply) - Pleasantries (sure / certainly / of course / happy to) - Hedging (might / perhaps / it seems / I think) - Motivational language + caveats Keep verbatim: - File paths (absolute + relative) - Exact error strings (quoted) - Code blocks (unchanged — never paraphrase code) - Command invocations - Decision IDs + provenance tags - Frontmatter values Pattern: `[thing] [action] [reason]. [next step].` Example: - Verbose: "I went ahead and updated the budget-governor skill to use the new 2026 pricing because the old tier table referenced outdated GPT-4o pricing that no longer reflects reality." - Caveman: "budget-governor: updated to 2026 Anthropic pricing. Old tier table = stale GPT-4o refs." ## Required inputs - Verbose handoff package from `handoff-compiler` (STATE.json + SUMMARY.md + NEXT.md) - Prompt classification + brief diff from `prompt-context-engine` (R6 payload) - Source model + target model identifiers - Source harness + target harness identifiers (Claude Code / Cursor / Codex / Gemini / Aider / Windsurf) ## Pr