Emit Claude Code artifacts from compiled package output

## Problem statement Claude Code needs provider-visible context and skill layout that matches its conventions. The compiler should emit Claude-compatible artifacts from the generated package model without copying arbitrary source `CLAUDE.md` content wholesale. ## Scope - Generate Claude-facing instruction content from the behavioral model and package artifacts. - Ensure generated skills and workflow summaries materialize correctly through the Claude adapter from #18. - Preserve ordered workflow intent and operational constraints in Claude-visible text. - Avoid duplicating or conflicting with the generated section maintained by materialization. ## Acceptance criteria - A generated package materializes for Claude using the existing #18 path. - `CLAUDE.md`/Claude-visible context includes active package, workflow, ordered steps, constraints, and references needed to run the workflow. - Tests verify that generated Claude artifacts are deterministic and do not duplicate materializer-managed blocks. - The package still passes `lineage package validate` from #31. ## Dependencies - Depends on provider-neutral artifact generation. - Builds directly on the Claude materializer adapter from #18. ## Non-goals - No changes to Claude Code itself. - No new provider registry behavior. - No unconstrained rewrite of source `CLAUDE.md`. ## Sequencing Land after provider-neutral generation and before end-to-end behavioral validation for Claude.