Complete Phase I foundations (SOUL-WP-0002)

Integrate research/foundations notes 001–005 into Terminology, Claims,
bibliography, concept notes, thought experiments, and open questions. Write
phase-i-foundations-synthesis.md, finish SOUL-WP-0002, and mark SOUL-WP-0003
ready for interaction research.

concepts/body.md

@@ -1,23 +1,27 @@
 # Body
 
-**Status:** provisional  
+**Status:** retained (Phase I, 2026-08-12)  
 **Working gloss:** Body = Action
 
 ## Working definition
 
-The **Body** is the operational dimension of a Being: the means through which it
-perceives, operates, and affects its environment.
+The operational dimension of a Being: channels of perception and action.
 
-For artificial beings this may include language interfaces, APIs, tools, sensors,
-databases, actuators, communication channels, avatars, compute, and permissions.
+For artificial beings: language interfaces, APIs, tools, sensors, databases,
+actuators, avatars, compute, permissions — possibly distributed and replaceable.
 
-## Notes for research
+## Phase I notes
 
-- Body is not identical with identity; components may be replaced.
-- Distributed and replaceable artificial bodies are expected.
-- Connect to embodiment literature without requiring biological embodiment.
+- Body ≠ identity; RN-005 Body replacement can preserve Being with continuity.
+- Multi-Body manifestation need not be a fork if constitutive integration holds.
+- Body is present-tense coupling; Soul carries diachronic relation.
 
 ## Open issues
 
 - Minimal body for a Being?
-- Relation between Body and Actor.
+- Relation between Body and Actor (Actor is technical manifestation stack;
+  Body is the functional action dimension — often overlapping in practice).
+
+## Sources
+
+RN-001 temporal triad; RN-005 Body/Actor replacement cases