Major update: Full tracker customization system

Features:
- Complete tracker configuration UI with add/remove functionality
- User Stats: Custom stats, status fields, skills section
- Info Box: Configurable widgets (date, weather, temp, time, location, events)
- Present Characters: Custom fields, relationships, character stats, thoughts
- Character-specific stats with color interpolation
- New multi-line format for cleaner AI generation and parsing
- Auto-cleanup of placeholder brackets in AI responses
- Relationship badges with emoji mapping
- Advanced inventory v2 system with multi-location storage
- Responsive mobile support with horizontal scrolling
- Removed legacy format support for cleaner codebase
- Fixed context injection for together mode (no duplication)
- Updated README with new features and configuration guide

index.js

@@ -86,6 +86,9 @@ import {
     addDiceQuickReply,
     getSettingsModal
 } from './src/systems/ui/modals.js';
+import {
+    initTrackerEditor
+} from './src/systems/ui/trackerEditor.js';
 import {
     togglePlotButtons,
     updateCollapseToggleIcon,
@@ -435,6 +438,7 @@ async function initUI() {
     setupDiceRoller();
     setupClassicStatsButtons();
     setupSettingsPopup();
+    initTrackerEditor();
     addDiceQuickReply();
     setupPlotButtons(sendPlotProgression);
     setupMobileKeyboardHandling();