Versioning

• Semver (MAJOR.MINOR.PATCH), tracked in a version.txt file at the root of every repo.
• Image tags derive from it: main → X.Y.Z, qa → X.Y.Z-qa, develop/other branches → X.Y.Z-develop.
• The bump happens once, at the start of a release cycle, via an automated script run across every repo in lockstep — all 18+ repos move to the same next version number on develop together, even repos with no functional change that cycle. This keeps "MCM 1.2.0" meaning the same thing everywhere, rather than each service drifting to its own number.
• Commit messages follow Conventional Commits.