v0.4.0

[0.4.0] - 2026-08-11

Changed

• Breaking: upgraded the MCP Python SDK from v1 to v2 (mcp>=2,<3). The
  FastMCP integration is now the v2 MCPServer: AuditedFastMCP became
  AuditedMCPServer, transport parameters (host, port) moved off the
  server constructor to run_streamable_http_async(), and protocol field
  access is snake_case. The v2 server speaks both the 2025-era and 2026-07-28
  revisions, so existing clients keep working.
• Pydantic floor raised to >=2.12 to match the SDK v2 dependency.