v21.4.1 — Windows library-check hotfix

Install / update

Stop AgentQon first, then:

npm install -g agentqon@latest

agentqon setup

agentqon

What changed

• Library verification no longer demands uvloop and exceptiongroup on
  Windows. Root cause: 21.4.0's checker read its rules from the
  hash-locked requirements file, and the file's security hashes bled
  into the extracted platform markers (e.g. sys_platform != "win32"
  arrived with hash text glued on). The strict parser fell back to
  "demand the module", so setup stopped on Windows — while correctly
  leaving the existing install untouched.
• The fix is verified against the real hash-locked file: markers now
  extract cleanly for all 30 packages, and a simulated-Windows run of
  the shipped checker correctly skips uvloop and exceptiongroup while
  still demanding them on Linux.

Test evidence

• CLI (node) suite: 18/18 at build time.