feat(foundation): FOUNDATION_UPDATE implementation

## Documentation (20 files)
- DAARION Ontology Core v1 (Agent → MicroDAO → Node → District)
- User Onboarding & Identity Layer (DAIS)
- Data Model UPDATE, Event Catalog, Governance & Permissions
- Rooms Layer, City/MicroDAO/Agents/Nodes Interface Architecture
- Helper files: ontology-summary, lifecycles, event-schemas

## Database Migration (027)
- DAIS tables: dais_identities, dais_emails, dais_wallets, dais_keys
- agent_assignments table for Assignment Layer
- rooms table for Rooms Layer
- event_outbox for NATS event delivery
- New enums: agent_role, microdao_type, node_kind, node_status, etc.
- Updated agents, microdaos, nodes tables with ontology fields

## Backend
- DAIS service & routes (/api/v1/dais/*)
- Assignment service & routes (/api/v1/assignments/*)
- Domain types for DAIS and Ontology

## Frontend
- Ontology types (Agent, MicroDAO, Node, DAIS, Assignments)
- API clients for DAIS and Assignments
- UI components: DaisProfileCard, AssignmentsPanel, OntologyBadge

Non-breaking update - all existing functionality preserved.

docs/foundation/helpers/node-lifecycle.md

@@ -0,0 +1,13 @@
+# Node Lifecycle
+
+1. Orchestrator triggers "Register Node"  
+2. Device generates DAIS node-auth key  
+3. MicroDAO verifies key ownership  
+4. `node.registered` event emitted  
+5. Node enters "provisioning" state  
+6. Agent workers start connecting  
+7. Node becomes "active"  
+8. Node can be updated (capabilities change)  
+9. Node enters "draining" before shutdown  
+10. Node becomes "retired"
+