INTENT.md: articulates why activity-core exists, the governing
three-question principle (when/what/where), what it is and is not,
and the design values (markdown-as-definition, rules before instructions,
no task state ownership, publisher-declared governance).
SCOPE.md: rewritten from stale pre-alpha state to reflect WP-0001/0002
completion and the ACT-ADR-001/002/003 architecture. Adds rule/instruction
model, event type registry, task emission adapter, webhook receiver, and
updated current state, terminology, and architecture decision references.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
