Semantic tokens now drop a variable token whose name was moved before that
line, and a property token whose base (`x` in `x.a`) is such a name. The
transfer statement itself keeps its colors (moves on the same line are
ignored for this filter), so only later uses turn plain/white.
With
_U2: own U = _U
_U3: own U = _U2
print(_U2.a)
line 3 emits only `print`; `_U2` and `a` have no semantic token. The
move diagnostic still marks `_U2` separately.
Completion filtering is unchanged (`_` offers only `_U3`).
TermiNexus
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