Previously, when a project had no Project Information node (e.g. one
created from the Standard template via create_project), the bump
flow read pi.version as None, the seed-check fired, and every call
re-seeded to 1.0.0.0 -- subsequent revision/minor/major bumps were
no-ops because the script never saw the actual current version.
Surfaced on MCPTest2 today: bumping revision after editing PLC_PRG
returned '1.0.0.0' instead of '1.0.1.0' because the seed kept firing.
Fix: when Project Information is missing, fall back to reading the
existing _MCP_PROJECT_VERSION.sVersion via the textual_declaration
of the GVL we ourselves maintain. So the source-of-truth chain is:
pi.version (when Project Information exists)
-> falls back to GVL.sVersion (when Project Information missing
but the GVL has been written
by a prior bump)
-> falls back to seed at 1.0.0.0 (true first-run, no GVL yet)
Implementation: read_version_from_gvl(primary_project) walks the
active Application's children for the named GVL and parses the
sVersion := '...' literal out of its textual_declaration with a
4-part regex. Returns None if the GVL doesn't exist OR its decl
doesn't match the expected shape; caller treats None as "no prior
version, seed". Soft-fails on any access exception (the bump is
the primary outcome, this is just resume-from-state).
This is the kind of "every arising problem fixed at the fork, not
worked around in one-offs" hygiene the user called out.
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