Implementation Plan

Status: summary only.

The authoritative current plan is implementation_plan_from_requirements.md.

Delivery Principles

• small coherent PR slices
• tests + docs in same PR
• keep ./dev/check.sh green
• merge only after explicit user approval

Phase Summary

1. Foundation

• machine profile scaffolding
• modal registry scaffolding

2. Syntax Extensions

• comments, M-code syntax baseline, rapid-traverse syntax

3. Modal Integration

• grouped modal behavior rollout

4. Tool/Runtime

• tool-change policies
• runtime-executable M-code subset

Dependency Order

Current preferred order is maintained in implementation_plan_root.md Section 4, including:

• comments before deeper modal/runtime families
• grouped modal rollout before full tool/runtime integration

Validation Matrix

Per feature slice:

• parser tests
• AIL tests
• executor tests (if runtime behavior changes)
• CLI/stage-output tests when schemas/output change
• docs updates (../../product/spec/index.md, program/development references)

This is a split summary of implementation_plan_root.md, not the primary requirements-driven execution plan.