feat: add isolated memory spaces

src/core/schema.ts

@@ -1,3 +1,4 @@
+export const SPACES_TABLE = 'spaces';
 export const TOPICS_TABLE = 'topics';
 export const FACTS_TABLE = 'facts';
 export const FACT_TOPICS_TABLE = 'fact_topics';
@@ -5,8 +6,19 @@ export const TOPIC_RELATIONS_TABLE = 'topic_relations';
 export const TOPIC_ALIASES_TABLE = 'topic_aliases';
 export const FACT_EMBEDDINGS_TABLE = 'fact_embeddings';
 
+export const SPACE_COLUMNS = [
+  'id',
+  'name',
+  'normalized_name',
+  'description',
+  'metadata',
+  'created_at',
+  'updated_at',
+] as const;
+
 export const TOPIC_COLUMNS = [
   'id',
+  'space_id',
   'name',
   'normalized_name',
   'category',
@@ -19,6 +31,7 @@ export const TOPIC_COLUMNS = [
 
 export const FACT_COLUMNS = [
   'id',
+  'space_id',
   'statement',
   'summary',
   'source',
@@ -45,6 +58,7 @@ export const TOPIC_RELATION_COLUMNS = [
 
 export const TOPIC_ALIAS_COLUMNS = [
   'id',
+  'space_id',
   'topic_id',
   'alias',
   'normalized_alias',