python-v2.0.0

Changed

• The package's version now tracks the server's: 2.0.0 installs Hardcharger 2.0.0 (the Python
  package was 0.1.0 while the server was pre-release). Both the runtime __version__ and
  the default downloaded server are 2.0.0; the [adbc] extra requires the 2.0.0 driver.
  PyPI metadata identifies the package as stable, and the download documentation uses
  anonymous access with an optional token to raise the API rate limit.

• The server version to download (SERVER_VERSION, HARDCHARGER_VERSION, ensure_server(version=...))
  may be a release candidate in the server's form (2.0.0-rc.1, tag v2.0.0-rc.1) or in
  PEP 440's (2.0.0rc1, how this package spells its own candidates); both fetch v2.0.0-rc.1.

• A python-v* GitHub Release is never made the repository's latest release, which stays the
  server's (what releases/latest and the installer resolve), and a PEP 440 pre-release
  (python-v2.0.0rc1) is marked a pre-release.

• The README's banner is the Hardcharger™ bull logo (the horizontal mascot lockup).

Documentation

• README, License: the package itself has no third-party code; the server it downloads carries
  THIRD_PARTY_NOTICES.md and THIRD_PARTY_NOTICES-web-ui.txt, which the install keeps beside
  bin/ (a unit test checks they arrive), and prints them with --licenses.

Fixed

• CI (.github/workflows/workflow.yml) failed on every push to main: the client job installs
  the [adbc] extra from PyPI, where adbc-driver-hardcharger isn't published yet. It runs on
  python-v* tags only now, where it still gates the publish.