docs: add separate graph type import section to README and update type definitions

Introduced a new README section explaining how to import graph types individually to enable tree shaking. Updated `package.json` exports to support direct graph type imports. Enhanced `GraphNoun` structure by adding optional `label` and `embeddedVerbs` properties while simplifying the `CreatorMetadata` interface.

README.md

@@ -203,6 +203,36 @@ const db = new BrainyData({
 });
 ```
 
+### Importing Graph Types Separately
+
+If you only need the graph type definitions without importing the entire library (supporting tree shaking), you can import them directly:
+
+```typescript
+// Import only the graph types
+import { GraphNoun, GraphVerb, NounType, VerbType } from '@soulcraft/brainy/types/graphTypes';
+
+// Example usage
+const person = {
+  id: '123',
+  createdBy: {
+    augmentation: 'manual',
+    version: '1.0',
+    model: 'none',
+    modelVersion: '1.0'
+  },
+  noun: NounType.Person,
+  createdAt: { seconds: Date.now() / 1000, nanoseconds: 0 },
+  updatedAt: { seconds: Date.now() / 1000, nanoseconds: 0 },
+  data: { name: 'John Doe' }
+};
+
+// Check the type
+console.log(`Person type: ${person.noun}`); // 'person'
+console.log(`Available noun types:`, Object.values(NounType));
+```
+
+This approach allows you to use just the type definitions without pulling in the entire library, which is useful for applications that only need to work with the data model.
+
 ## Publishing and Using as a Private NPM Package
 
 Soulcraft Brainy is configured as a private NPM package with restricted access. This section provides information on how to publish and use it within your organization.

package.json

@@ -11,6 +11,10 @@
     ".": {
       "import": "./dist/index.js",
       "types": "./dist/index.d.ts"
+    },
+    "./types/graphTypes": {
+      "import": "./dist/types/graphTypes.js",
+      "types": "./dist/types/graphTypes.d.ts"
     }
   },
   "engines": {

src/types/graphTypes.ts

@@ -15,8 +15,6 @@ interface Timestamp {
 interface CreatorMetadata {
   augmentation: string    // Name of the augmentation that created this element
   version: string   // Version of the augmentation
-  model: string     // Model identifier used in creation
-  modelVersion: string  // Version of the model
 }
 
 /**
@@ -29,7 +27,9 @@ export interface GraphNoun {
   noun: NounType                       // Type classification of the noun
   createdAt: Timestamp                 // When the noun was created
   updatedAt: Timestamp                 // When the noun was last updated
+  label?: string                       // Optional descriptive label
   data?: Record<string, unknown>       // Additional flexible data storage
+  embeddedVerbs?: EmbeddedGraphVerb[]  // Optional embedded relationships
   embedding?: number[]                 // Vector representation of the noun
 }