Establish Soul Frame research repository and workplans

Scaffold the research layout from the research program, add INTENT/SCOPE,
research instruments, concept stubs, and SOUL-WP-0001–0008 phase workplans.
Register the repo with State Hub under domain agents for hub-synced execution.

concepts/mind.md

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+# Mind
+
+**Status:** provisional  
+**Working gloss:** Mind = Model (adaptive control through models)
+
+## Working definition
+
+The **Mind** is the adaptive control and model-building dimension of a Being.
+
+It constructs actionable representations of self, environment, other beings,
+relationships, intentions, possible futures, and consequences of action.
+
+Models change through interaction. **Co-adaptive model building** is mutual,
+recursive modeling among interacting beings.
+
+## Notes for research
+
+- Prefer model-based control over intelligence or consciousness alone as the
+  primary foundation for Mind in Soul Frame.
+- Connect to cybernetics, predictive processing, active inference, theory of mind.
+
+## Open issues
+
+- Definition of "model" precise enough for crosswalk.
+- Embodied vs purely informational modeling.