Sleep/wake toggles overwrote 'evolving' with 'sleeping', permanently
destroying evolution progress. The root cause was using a single state
tag for two orthogonal concerns: activity (active/sleeping/hibernating)
and progression (incubating/evolving).
Introduce progression_state and progression_started_at as new tags
orthogonal to the activity state tag. Sleep, wake, and hibernation
changes now never touch progression. Parser auto-migrates legacy
events that stored progression in the state tag on read.
filemon
bf6788c141