Remove /mcp suffix from bundled MCP server URLs - the pmcp
StreamableHttpServer serves at the root path, not /mcp.

Also adds test examples for verifying browser automation:
- 01_simple_test: navigate to example.com, screenshot, extract text
- 02_form_filling: fill httpbin.org pizza form, verify field values
- run-test.bat helper and examples bundled in MSI installer

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>