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* Plan: flesh out PR7 (MCP server + Agent Skill) design stdio transport (no HTTP port), mlr mcp terminal in the main binary, SDK-vs-handroll decision, tool list, in-process vs subprocess split, run-tool safety (--no-shell prerequisite), single-sourced skill, tests. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Add mlr mcp: MCP server + agent playbook; --no-shell gate (#2098 PR7) New terminal `mlr mcp` runs a Model Context Protocol server over stdio (spawned by MCP clients; no network port), exposing five tools -- list_capabilities, which, validate_dsl, describe_data, run -- plus an agent playbook as MCP prompt/resource. Catalog tools are served in-process from the help registries; the rest subprocess this same binary with MLR_ERRORS_JSON=1, a timeout, and an output cap. Prerequisite: a new --no-shell flag / MLR_NO_SHELL env var (one-way gate) disables the DSL system/exec functions, piped redirects, and --prepipe/--prepipex; the MCP server sets it on the commands it runs unless started with --allow-shell. Adds the github.com/modelcontextprotocol/go-sdk dependency. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Force LF checkout for the embedded SKILL.md (Windows CI fix) go:embed embeds checkout bytes, so a CRLF checkout on Windows made the embedded playbook differ per platform and failed TestPlaybookHasFrontmatter. Pin the file to eol=lf in .gitattributes. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Move no-shell test DSL into per-case mlr files (Windows CI fix) Inline single-quoted DSL in cmd files is mangled by the Windows shell (single quotes are not quote characters there); the harness's put -f ${CASEDIR}/mlr pattern avoids shell quoting entirely. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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mlr --no-shell -n put -f ${CASEDIR}/mlr
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