v0.5.2

What's changed

Documentation

• Added AGENTS.md with architecture guide and links to related MCP servers
• Added Related MCP Servers by VitexSoftware section to README
• Updated SVG icon (redesigned to teal/black chain-link + monogram style)
• Fixed manpage: version, date, repository URL (Vitexus → VitexSoftware)

CI / packaging fixes

• Drop debian:forky and ubuntu:resolute from CI matrix (broken python3-fastmcp dep chains)
• Stub fastmcp in conftest.py so unit tests pass in Debian build environments without the full dep tree
• Trim Build-Depends — python3-fastmcp is a runtime dep only
• Skip TestToolCount automatically when fastmcp is stubbed