Previously the dashed average pace/HR line only drew for warm-up/cool-down
laps. Workouts with only one kind of effort throughout (no warm-up/cool-down
segmentation at all, e.g. a plain Long Run) had nothing to compare the
actual trace against, so they now get the same dashed line spanning the
whole activity at its overall (duration-weighted) average.
UI-only rename: "smartrun" -> "geniusrun", prefixed with the genie emoji.
Manual assignments are the user's definitive word and Race assignments come
from a hard Garmin fact (eventType.typeKey), not a retunable rule -- neither
is ever touched by reclassify again, and Race can no longer be set by hand
via the review queue. Adds an Activities page so this locked/unlocked status
is visible per workout, since Review Queue only ever showed unresolved items.
