It already read Config().char.get("protect_charms_from_sell", True) in
personal.py's drop/sell guard, but the key was never added to the char
config dict builder in config.py, so setting it in an ini file did
nothing — charms were unconditionally undroppable regardless of the
pickit verdict. Wired it up the same way protect_shields_from_sell
already works. Defaults to 1 (protected, unchanged behavior) so this
is opt-in only.
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