feat(nicknames): add options panel and source picker

Add the General > Nicknames panel: saved rule list with drag-to-reorder priority, conflict signals, inline edit and delete, an add-from-source picker, optional nickname marking styles, and the Sharing & Sync controls. Register the new user-facing strings in the enUS locale and add the files to the load order.

Author: Maelareth

DandersFrames.toc

@@ -78,6 +78,8 @@ GUI\ColorPickerTest.lua
 Features\Search.lua
 Options\Options.lua
 Options\AutoProfiles.lua
+Options\NicknamesPage.lua
+Options\NicknamesPicker.lua
 
 # Popup System (generic wizard & alert popups)
 Popup.lua
@@ -149,6 +151,8 @@ AuraBlacklist\Options.lua
 
 Features\TargetedSpells.lua
 Features\VersionCheck.lua
+Features\Nicknames.lua
+Features\NicknamesComm.lua
 Features\PinnedFrames.lua
 Features\FlatRaidFrames.lua
 

Locales/enUS.lua

@@ -1864,4 +1864,68 @@ L["Yes, set it up"] = true
 L["• Having trouble seeing certain buffs or debuffs?\n• This wizard helps you pick the right aura settings"] = true
 L["• Recommended defaults work well for most players\n• Manual lets you fine-tune every filter option"] = true
 
+-- Nicknames
+L["%d overridden"] = true
+L["%d received"] = true
+L["%d rules"] = true
+L["1 received"] = true
+L["1 rule"] = true
+L["Accept from"] = true
+L["Add a nickname"] = true
+L["Add from"] = true
+L["Add from:"] = true
+L["Added"] = true
+L["All nicknames"] = true
+L["Angle  <name>"] = true
+L["Apply to"] = true
+L["Asterisk  name*"] = true
+L["Auto-share on group join"] = true
+L["B.net"] = true
+L["Blocked"] = true
+L["Blocked by you"] = true
+L["Blocked: contained formatting codes"] = true
+L["Blocked: contains a filtered word"] = true
+L["Blocked: empty"] = true
+L["Blocked: too long"] = true
+L["Brackets  [name]"] = true
+L["Character / text"] = true
+L["Contains"] = true
+L["Contains: matches any character whose name contains this text."] = true
+L["Enable Nicknames"] = true
+L["Ends with"] = true
+L["Ends with: matches any character whose name ends with this text."] = true
+L["Exact name"] = true
+L["Exact: matches only this character. Add a realm as Name-Realm."] = true
+L["Friends"] = true
+L["Guild"] = true
+L["Mark nicknames"] = true
+L["Marker style"] = true
+L["Match"] = true
+L["My added"] = true
+L["Nickname"] = true
+L["No B.net friends found."] = true
+L["No characters found."] = true
+L["No group members found."] = true
+L["No nickname rules yet. Add one above."] = true
+L["No nicknames received yet."] = true
+L["Overlapping rule"] = true
+L["Overlaps with rule(s) %s. For names they share, the rule higher in the list wins."] = true
+L["Overridden"] = true
+L["Parentheses  (name)"] = true
+L["Raid/Party"] = true
+L["Received nicknames"] = true
+L["Received only"] = true
+L["Request"] = true
+L["Rule #%d (%s) is higher in the list and already matches these names, so this rule never applies. Move it above #%d to use it."] = true
+L["Rules are checked top to bottom — the first one that matches a name wins. Drag a row by its grip to change priority."] = true
+L["Saved nicknames"] = true
+L["Share now"] = true
+L["Share via"] = true
+L["Sharing & Sync"] = true
+L["Source"] = true
+L["Starts with"] = true
+L["Starts with: matches any character whose name begins with this text."] = true
+L["You are not in a guild."] = true
+L["Your nickname (broadcast)"] = true
+
 --@end-do-not-package@