feat: add isolated memory spaces

src/core/utils.ts

@@ -1,7 +1,7 @@
 import { createHash, randomUUID } from 'node:crypto';
 
-import type { Fact, FactTopic, Topic } from '../types/api';
-import type { FactRecord, TopicRecord } from '../types/domain';
+import type { Fact, FactTopic, Space, Topic } from '../types/api';
+import type { FactRecord, SpaceRecord, TopicRecord } from '../types/domain';
 
 export function normalizeTopicName(name: string): string {
   return name.trim().replace(/\s+/g, ' ').toLowerCase();
@@ -11,6 +11,14 @@ export function canonicalizeTopicName(name: string): string {
   return name.trim().replace(/\s+/g, ' ');
 }
 
+export function normalizeSpaceName(name: string): string {
+  return normalizeTopicName(name);
+}
+
+export function canonicalizeSpaceName(name: string): string {
+  return canonicalizeTopicName(name);
+}
+
 export function nowIsoString(): string {
   return new Date().toISOString();
 }
@@ -71,9 +79,22 @@ export function cosineSimilarity(left: number[], right: number[]): number {
   return dot / (Math.sqrt(leftMagnitude) * Math.sqrt(rightMagnitude));
 }
 
+export function mapSpaceRow(record: SpaceRecord): Space {
+  return {
+    id: record.id,
+    name: record.name,
+    normalizedName: record.normalized_name,
+    description: record.description,
+    metadata: deserializeMetadata(record.metadata) as Space['metadata'],
+    createdAt: record.created_at,
+    updatedAt: record.updated_at,
+  };
+}
+
 export function mapTopicRow(record: TopicRecord): Topic {
   return {
     id: record.id,
+    spaceId: record.space_id,
     name: record.name,
     normalizedName: record.normalized_name,
     category: record.category,
@@ -88,6 +109,7 @@ export function mapTopicRow(record: TopicRecord): Topic {
 export function mapFactRow(record: FactRecord, topics: FactTopic[]): Fact {
   return {
     id: record.id,
+    spaceId: record.space_id,
     statement: record.statement,
     summary: record.summary,
     source: record.source,