feat: update import path for ManifestSchema and add PluginVersionSchema with version history

Author: hotlong

packages/spec/src/hub/composer.zod.ts

@@ -1,5 +1,5 @@
 import { z } from 'zod';
-import { ManifestSchema } from '../system/manifest.zod';
+import { ManifestSchema } from '../kernel/manifest.zod';
 
 /**
  * # Cloud Composer Protocol

packages/spec/src/hub/marketplace.zod.ts

@@ -27,6 +27,23 @@ export const PluginPricingSchema = z.object({
   trialDays: z.number().int().optional(),
 });
 
+/**
+ * Plugin Version Schema
+ * Specific release version details
+ */
+export const PluginVersionSchema = z.object({
+  version: z.string().describe('SemVer string (e.g. 1.0.0)'),
+  publishedAt: z.string().datetime().describe('Publication date'),
+  downloadUrl: z.string().url().describe('Archive download URL'),
+  checksum: z.string().optional().describe('Integrity checksum (shasum)'),
+  engine: z.object({
+    node: z.string().optional(),
+    objectstack: z.string().describe('Required ObjectStack kernel version range'),
+  }).optional().describe('Engine compatibility'),
+  dependencies: z.record(z.string(), z.string()).optional().describe('Runtime plugin dependencies'),
+  changeLog: z.string().optional().describe('Release notes'),
+});
+
 /**
  * Plugin Registry Entry Schema
  * Represents a listing in the Marketplace.
@@ -38,6 +55,12 @@ export const MarketplacePluginSchema = z.object({
    */
   id: z.string(),
 
+  /**
+   * Version History
+   * Registry of all available versions
+   */
+  versions: z.record(z.string(), PluginVersionSchema).optional().describe('Map of versions (1.0.0) -> Details'),
+
   /**
    * Display Name
    */