Conversion of realname and nickname from bay (#19120)

* Automatic changelog compile [ci skip]

* replace all bay instances for realname and nickname with tg

* add comments where uncertain of sanitisation needed

* Fix issue from git conflict..

* Fix issue causing setup menu not opening

* Attempt to clean up how name datums are handled

* Remove redundant check

* Fix number issues with character names

---------

Co-authored-by: vorestation-ci[bot] <199609141+vorestation-ci[bot]@users.noreply.github.com>

code/modules/client/preferences/names.dm

@@ -0,0 +1,94 @@
+// Name preferences for character creation
+// Handles name related validation, including per species.
+
+/// Abstract name preference type that provides species-aware sanitization
+/datum/preference/name
+	abstract_type = /datum/preference/name
+	savefile_identifier = PREFERENCE_CHARACTER
+	priority = PREFERENCE_PRIORITY_NAMES
+	var/maximum_value_length = MAX_NAME_LEN
+	var/default_species = SPECIES_HUMAN
+
+/// Check if the character is a Full Body Prosthetic (allows numbers in name)
+/datum/preference/name/proc/is_fbp(datum/preferences/preferences)
+	if(!preferences?.organ_data)
+		return FALSE
+	return preferences.organ_data[BP_TORSO] == "cyborg"
+
+/datum/preference/name/is_valid(value)
+	if(!istext(value))
+		return FALSE
+	if(length(value) > maximum_value_length)
+		return FALSE
+	return TRUE
+
+/datum/preference/name/pref_deserialize(input, datum/preferences/preferences)
+	if(!istext(input))
+		return create_default_value()
+	var/species = default_species
+	if(preferences?.species)
+		species = preferences.species
+	var/allow_numbers = is_fbp(preferences)
+	var/sanitized = sanitize_name(input, species, allow_numbers)
+	if(!sanitized)
+		return create_default_value()
+	return sanitized
+
+// Note: pref_serialize intentionally does NOT re-sanitize the value.
+// The base proc doesn't pass preferences, so we can't check is_fbp().
+// Sanitization happens on read via pref_deserialize which DOES have access to preferences.
+/datum/preference/name/pref_serialize(input)
+	if(!istext(input))
+		return create_default_value()
+	return input
+
+/datum/preference/name/apply_to_human(mob/living/carbon/human/target, value)
+	return // Handled in copy_to_mob
+
+/datum/preference/name/apply_to_living(mob/living/target, value)
+	return
+
+/datum/preference/name/apply_to_silicon(mob/living/silicon/target, value)
+	return
+
+/datum/preference/name/apply_to_animal(mob/living/simple_mob, value)
+	return
+
+/// Character's real name
+/datum/preference/name/real_name
+	savefile_key = "real_name"
+
+/datum/preference/name/real_name/create_default_value()
+	return "Character"
+
+/datum/preference/name/real_name/create_informed_default_value(datum/preferences/preferences)
+	var/gender = preferences?.identifying_gender || MALE
+	var/species = preferences?.species || SPECIES_HUMAN
+	return random_name(gender, species)
+
+/datum/preference/name/real_name/create_random_value(datum/preferences/preferences, datum/species/current_species)
+	var/gender = preferences?.identifying_gender || MALE
+	var/species_name = current_species?.name || SPECIES_HUMAN
+	return random_name(gender, species_name)
+
+/// Character's nickname (optional)
+/datum/preference/name/nickname
+	savefile_key = "nickname"
+
+/datum/preference/name/nickname/is_valid(value)
+	if(isnull(value) || value == "")
+		return TRUE
+	return ..()
+
+/datum/preference/name/nickname/pref_deserialize(input, datum/preferences/preferences)
+	if(isnull(input) || input == "")
+		return null
+	return ..()
+
+/datum/preference/name/nickname/pref_serialize(value, datum/preferences/preferences)
+	if(isnull(value) || value == "")
+		return null
+	return ..()
+
+/datum/preference/name/nickname/create_default_value()
+	return null