fix(memory): read serverInfo.version from package.json (#4407)

Fixes #4406. The memory server previously hardcoded serverInfo.version as
"0.6.3", which no longer matched published calendar versions. Resolve
package.json from both source and dist layouts so Docker and npm installs
report the installed package version.

Co-authored-by: syf2211 <syf2211@users.noreply.github.com>

src/memory/__tests__/server-version.test.ts

@@ -0,0 +1,25 @@
+import { describe, it, expect } from 'vitest';
+import { createRequire } from 'node:module';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import { resolvePackageVersion, SERVER_VERSION } from '../version.js';
+
+const packageJson = createRequire(import.meta.url)('../package.json') as { version: string };
+
+describe('server version', () => {
+  it('uses package.json version for serverInfo', () => {
+    expect(SERVER_VERSION).toBe(packageJson.version);
+    expect(resolvePackageVersion()).toBe(packageJson.version);
+  });
+
+  it('resolves package.json from the dist layout', () => {
+    const distDir = path.join(path.dirname(fileURLToPath(import.meta.url)), '..', 'dist');
+    const distVersionPath = path.join(distDir, 'version.js');
+
+    expect(() => createRequire(distVersionPath)('./version.js')).not.toThrow();
+    const distModule = createRequire(distVersionPath)('./version.js') as {
+      SERVER_VERSION: string;
+    };
+    expect(distModule.SERVER_VERSION).toBe(packageJson.version);
+  });
+});

src/memory/index.ts

@@ -8,6 +8,7 @@ import { promises as fs } from 'fs';
 import path from 'path';
 import { randomBytes } from 'crypto';
 import { fileURLToPath } from 'url';
+import { SERVER_VERSION } from './version.js';
 
 // Define memory file path using environment variable with fallback
 export const defaultMemoryPath = path.join(path.dirname(fileURLToPath(import.meta.url)), 'memory.jsonl');
@@ -276,10 +277,9 @@ const RelationSchema = z.object({
   relationType: z.string().describe("The type of the relation")
 });
 
-// The server instance and tools exposed to Claude
 const server = new McpServer({
   name: "memory-server",
-  version: "0.6.3",
+  version: SERVER_VERSION,
 });
 
 const RESOURCE_URI = "memory://knowledge-graph";

src/memory/version.ts

@@ -0,0 +1,27 @@
+import { createRequire } from 'node:module';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+export function resolvePackageVersion(): string {
+  const require = createRequire(import.meta.url);
+  const moduleDir = path.dirname(fileURLToPath(import.meta.url));
+  const candidates = [
+    path.join(moduleDir, 'package.json'),
+    path.join(moduleDir, '..', 'package.json'),
+  ];
+
+  for (const candidate of candidates) {
+    try {
+      const pkg = require(candidate) as { version?: string };
+      if (pkg.version) {
+        return pkg.version;
+      }
+    } catch {
+      // Try the next candidate when running from dist/ or source.
+    }
+  }
+
+  throw new Error('Could not locate package.json for server version');
+}
+
+export const SERVER_VERSION = resolvePackageVersion();