v0.19.2 — publish gate fix (summary cap)

Fixed

• Second publish gate. With the test job green, PyPI rejected the
  0.19.1 upload: 'summary' field must be 512 characters or less. The
  pyproject.toml description had grown to 557 characters over three
  releases of feature lists. It is now 499 and re-measured with the current
  surface (13 groups / 88 operations), and test_version.py asserts the
  cap so this fails before a tag, not after — mutation-checked (a padded
  description turns it red). Trusted publishing itself authenticated fine.

Full 0.19.0 feature notes: https://github.com/DareDev256/fcp-mcp-server/releases/tag/v0.19.0