Claude sub-agents, PRD, MCP improvements (#359)

1. Added Claude Code sub-agents
2. Added PRD tool to MCP Server
3. Added MCP Server UI to Dev Tools
4. Improved MCP Server Database Tool
5. Updated dependencies

apps/dev-tool/app/mcp-server/_lib/server/prd-loader.ts

@@ -0,0 +1,48 @@
+import { relative } from 'node:path';
+
+import { PRDManager } from '@kit/mcp-server/prd-manager';
+
+interface PRDSummary {
+  filename: string;
+  title: string;
+  lastUpdated: string;
+  progress: number;
+  totalStories: number;
+  completedStories: number;
+}
+
+export async function loadPRDs(): Promise<PRDSummary[]> {
+  try {
+    PRDManager.setRootPath(relative(process.cwd(), '../..'));
+
+    // Use the actual PRDManager to list PRDs
+    const prdFiles = await PRDManager.listPRDs();
+
+    const prdSummaries: PRDSummary[] = [];
+
+    // Load each PRD to get its details
+    for (const filename of prdFiles) {
+      try {
+        const content = await PRDManager.getPRDContent(filename);
+        const prd = JSON.parse(content);
+
+        prdSummaries.push({
+          filename,
+          title: prd.introduction.title,
+          lastUpdated: prd.metadata.lastUpdated,
+          progress: prd.progress.overall,
+          totalStories: prd.progress.total,
+          completedStories: prd.progress.completed,
+        });
+      } catch (prdError) {
+        console.error(`Failed to load PRD ${filename}:`, prdError);
+        // Continue with other PRDs even if one fails
+      }
+    }
+
+    return prdSummaries;
+  } catch (error) {
+    console.error('Failed to load PRDs:', error);
+    return [];
+  }
+}