Add automatic cluster pool allocation.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/clusters/entities/cluster.entity.ts

@@ -7,6 +7,8 @@ import {
 } from 'typeorm';
 import { ClusterStatus } from '../../common/enums';
 
+export type ClusterHealthStatus = 'unknown' | 'healthy' | 'degraded' | 'unhealthy';
+
 @Entity('clusters')
 export class Cluster {
   @PrimaryGeneratedColumn('uuid')
@@ -30,6 +32,24 @@ export class Cluster {
   @Column({ nullable: true })
   region: string;
 
+  @Column({ default: 1 })
+  weight: number;
+
+  @Column({ type: 'jsonb', default: [] })
+  tags: string[];
+
+  @Column({ default: 'unknown' })
+  healthStatus: ClusterHealthStatus;
+
+  @Column({ type: 'timestamptz', nullable: true })
+  lastHealthCheckedAt: Date;
+
+  @Column({ nullable: true })
+  healthMessage: string;
+
+  @Column({ type: 'jsonb', nullable: true })
+  availableResources: Record<string, any>;
+
   @Column({ nullable: true })
   provider: string; // e.g., 'aws', 'gcp', 'azure', 'bare-metal'