Move doc/specs/ui.md to doc/spec/ui.md. Move plans/module-system.md to doc/plans/. Add doc/spec/agents-runtime.md and docs/ reference specs. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Move doc/specs/ui.md to doc/spec/ui.md. Move plans/module-system.md to doc/plans/. Add doc/spec/agents-runtime.md and docs/ reference specs. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>