Add optional stdio transport to marketing example servers

[antonpk1]

Summary

• Add support for --stdio flag to all 5 marketing example servers
• When launched with --stdio, servers use StdioServerTransport instead of starting an HTTP server
• Enables direct integration with Claude Desktop and other MCP clients that use stdio transport

Changes

• examples/budget-allocator-server/server.ts
• examples/cohort-heatmap-server/server.ts
• examples/customer-segmentation-server/server.ts
• examples/scenario-modeler-server/server.ts
• examples/system-monitor-server/server.ts

Usage

# HTTP mode (default)
bun examples/budget-allocator-server/server.ts

# stdio mode
bun examples/budget-allocator-server/server.ts --stdio

Test plan

• Verify TypeScript compiles without errors
• Test HTTP mode still works: bun examples/budget-allocator-server/server.ts
• Test stdio mode: bun examples/budget-allocator-server/server.ts --stdio
• Test with MCP Inspector: npx @modelcontextprotocol/inspector@latest bun examples/budget-allocator-server/server.ts --stdio
• Test with Claude Desktop using stdio config

🤖 Generated with Claude Code

[pkg-pr-new]

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npm i https://pkg.pr.new/modelcontextprotocol/ext-apps/@modelcontextprotocol/ext-apps@85

commit: d6ff3d9

[ochafik]

Thanks Anton!