feat: v2.1.0.0 — custom HUD, grouped settings UX, effect delivery

[TheCodingDad-TisonK]

Summary

• Custom Event HUD (gui/RWEEventHUD.lua): drag-and-drop resizable overlay with category-colored badges (ECO/VEH/FLD/WLD/SPL), live countdown, cooldown state, and a flash notification queue. F3 toggles visibility. Position/size persists to savegame XML.
• Settings UX rewrite (gui/RWESettingsIntegration.lua): clean grouped layout with subsection headers (Event Timing / Notifications & HUD / Event Categories / Physics Override / Debug), human-readable cooldown labels, live HUD scale control.
• Settings crash fix: InGameMenuSettingsFrame hover code calls setImageColor() on all layout children — plain TextElement lacks this method. Fixed by stubbing a no-op setImageColor directly on header TextElements. Removed the previous BitmapElement wrapper approach which caused a gray box artifact and double-height overlap.
• F3 / keyEvent param shift fix: Utils.appendedFunction passes the method receiver as first arg — all hooked functions (keyEvent, draw, mouseEvent) were missing mission as first param, causing every key/mouse check to operate on shifted arguments.
• api/ missing from zip: build.sh subdirs list was missing 'api' — all 5 subsystem API files were absent from deployed zip.
• Unified notification router: notifyEvent(message, categoryKey, isPositive) routes to HUD flash queue and/or addIngameNotification based on settings.

Test plan

• Open ESC > Settings — no crash, all sections visible and properly spaced, no gray box overflow
• Physics and Debug subsection headers not overlapping controls
• F3 toggles HUD visibility in-game
• HUD shows active event name, time remaining, cooldown countdown
• HUD flash notification appears on event trigger
• HUD drag and resize works (RMB edit mode), position persists on save/load
• HUD Scale setting in Settings updates overlay size live
• All 5 API files present in deployed zip (check api/ folder)
• F9 force-trigger fires an event and shows HUD flash