fix(schemas): make illustration nullable in GitLabPipelineSchema

📝 Details:
- GitLab issues/milestones의 null description 처리
- schemas.ts에서 description을 nullable로 변경

CHANGELOG.md

@@ -1,3 +1,14 @@
+## [1.0.46] - 2025-05-27
+
+### Fixed
+
+- Fixed issue where GitLab issues and milestones with null descriptions would cause JSON-RPC errors
+  - Changed `description` field to be nullable with default empty string in schemas
+  - This allows proper handling of GitLab issues/milestones without descriptions
+  - See: [PR #53](https://github.com/zereight/gitlab-mcp/pull/53), [Issue #51](https://github.com/zereight/gitlab-mcp/issues/51)
+
+---
+
 ## [1.0.45] - 2025-05-24
 
 ### Added

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@zereight/mcp-gitlab",
-  "version": "1.0.45",
+  "version": "1.0.46",
   "description": "MCP server for using the GitLab API",
   "license": "MIT",
   "author": "zereight",

schemas.ts

@@ -40,7 +40,7 @@ export const GitLabPipelineSchema = z.object({
       image: z.string().optional(),
       size: z.string().optional(),
       title: z.string().optional(),
-    }).optional(),
+    }).nullable().optional(),
     favicon: z.string().optional(),
   }).optional(),
 });
@@ -407,7 +407,7 @@ export const GitLabMilestoneSchema = z.object({
   id: z.number(),
   iid: z.number(), // Added to match GitLab API
   title: z.string(),
-  description: z.string(),
+  description: z.string().nullable().default(""),
   state: z.string(),
   web_url: z.string(), // Changed from html_url to match GitLab API
 });
@@ -417,7 +417,7 @@ export const GitLabIssueSchema = z.object({
   iid: z.number(), // Added to match GitLab API
   project_id: z.number(), // Added to match GitLab API
   title: z.string(),
-  description: z.string(), // Changed from body to match GitLab API
+  description: z.string().nullable().default(""), // Changed from body to match GitLab API
   state: z.string(),
   author: GitLabUserSchema,
   assignees: z.array(GitLabUserSchema),