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/event-schemas.json

@@ -0,0 +1,41 @@
+{
+  "agent.promoted_to_orchestrator": {
+    "agent_id": "string",
+    "timestamp": "datetime"
+  },
+  "microdao.created": {
+    "microdao_id": "string",
+    "primary_orchestrator_agent_id": "string",
+    "type": "root | standard | district",
+    "parent_microdao_id": "string|null",
+    "timestamp": "datetime"
+  },
+  "node.registered": {
+    "node_id": "string",
+    "microdao_id": "string",
+    "node_kind": "smartphone|laptop|edge|datacenter|iot|gpu-cluster",
+    "capabilities": "object",
+    "timestamp": "datetime"
+  },
+  "microdao.promoted_to_district": {
+    "microdao_id": "string",
+    "promoted_by_agent_id": "string",
+    "parent_microdao_id": "string",
+    "timestamp": "datetime"
+  },
+  "agent.assignment_created": {
+    "assignment_id": "string",
+    "agent_id": "string",
+    "target_microdao_id": "string",
+    "scope": "microdao|district|city",
+    "role": "string",
+    "metadata": "object",
+    "timestamp": "datetime"
+  },
+  "agent.assignment_ended": {
+    "assignment_id": "string",
+    "agent_id": "string",
+    "timestamp": "datetime"
+  }
+}
+