Issue #28: Add version.py.in CMake template that injects
KINDRED_CREATE_VERSION at build time, making the Kindred Create
version available to Python code via 'from version import VERSION'.
Issue #29: Add update_checker.py that queries the Gitea releases
API on startup (10s deferred) to check for newer versions. Uses
stdlib urllib only, 5s timeout, never blocks the UI. Respects
user preferences for check interval, enable/disable, and skipped
versions. Logs results to Console for now — UI notification will
follow in issue #30.
Closes#28Closes#29
35302154ae