feat(mcp): add MCP Server Integration — Property Search, Analytics, Valuation

Implement 3 MCP servers in libs/mcp-servers/ using @modelcontextprotocol/sdk:

- Property Search: NL search via Typesense, property comparison, detail lookup
- Market Analytics: market reports, price trends, district comparison
- Valuation: AVM integration with Python AI service, feature extraction, batch valuation

Includes NestJS integration module with SSE transport for in-process hosting.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

pnpm-lock.yaml

@@ -60,6 +60,9 @@ importers:
 
   apps/api:
     dependencies:
+      '@goodgo/mcp-servers':
+        specifier: workspace:*
+        version: link:../../libs/mcp-servers
       '@nestjs/common':
         specifier: ^11.0.0
         version: 11.1.18(class-transformer@0.5.1)(class-validator@0.15.1)(reflect-metadata@0.2.2)(rxjs@7.8.2)
@@ -270,6 +273,9 @@ importers:
         specifier: ^3.24.0
         version: 3.25.76
     devDependencies:
+      '@types/express':
+        specifier: ^5.0.6
+        version: 5.0.6
       '@types/node':
         specifier: ^22.0.0
         version: 22.19.17