c5469214e3
New enter_project(project_id) MCP tool composes get_project + get_applicable_rules + get_project_milestone_summary + recent open-tasks + recent notes into one round-trip, intended to be called at session start (or whenever the active project changes) so Claude has the full project context loaded before it starts mutating. _INSTRUCTIONS now points Claude at enter_project for project-scoped work, alongside the existing list_always_on_rules instruction. No schema change; pure composition over existing services. Closes the four-slice rules-consolidation plan (Scribe task #508): S1+S2 (always_on flag + Scribe-first prompt,658348f), S3 (project- scoped rules,43a860c), and now S4. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>