release: bump version to 1.4(p) (versionCode 14)

- Update versionCode 12 → 14, versionName 1.3(p) → 1.4(p)
- Update pubspec.yaml version to 1.4.0+14
- Add CHANGELOG.md with full version history
- Update README.md: version badge + changelog section
- Desktop Contribute Dashboard rebuilt to match web version
  - Contributor Dashboard title, 3-tab nav (Contribute/Leaderboard/Achievements)
  - Two-column submit form, tier milestone progress bar
  - Desktop leaderboard with podium, filters, rank table (green points)
  - Desktop achievements 3-column badge grid
  - Inline Reward Shop with RP balance
- Gamification feature module (EP, RP, leaderboard, achievements, shop)
- Profile screen redesigned to match web app layout with animations
- Home screen bottom sheet date filter chips
- Updated API endpoints, login/event detail screens, theme colors
- Added Gilroy font suite, responsive layout improvements

lib/screens/home_screen.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'dart:ui';
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:cached_network_image/cached_network_image.dart';
 
 import '../features/events/models/event_models.dart';
 import '../features/events/services/events_service.dart';
@@ -13,6 +14,8 @@ import 'learn_more_screen.dart';
 import 'search_screen.dart';
 import '../core/app_decoration.dart';
 import 'package:flutter_svg/flutter_svg.dart';
+import 'package:provider/provider.dart';
+import '../features/gamification/providers/gamification_provider.dart';
 
 class HomeScreen extends StatefulWidget {
   const HomeScreen({Key? key}) : super(key: key);
@@ -78,13 +81,19 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     _pincode = prefs.getString('pincode') ?? 'all';
 
     try {
-      final types = await _events_service_getEventTypesSafe();
-      final events = await _events_service_getEventsSafe(_pincode);
+      // Fetch types and events in parallel for faster loading
+      final results = await Future.wait([
+        _events_service_getEventTypesSafe(),
+        _events_service_getEventsSafe(_pincode),
+      ]);
+      final types = results[0] as List<EventTypeModel>;
+      final events = results[1] as List<EventModel>;
       if (mounted) {
         setState(() {
           _types = types;
           _events = events;
           _selectedTypeId = -1;
+          _cachedFilteredEvents = null; // invalidate cache
         });
       }
     } catch (e) {
@@ -157,10 +166,15 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
               child: imageUrl != null && imageUrl.isNotEmpty
                   ? ClipRRect(
                       borderRadius: BorderRadius.circular(12),
-                      child: Image.network(
-                        imageUrl,
+                      child: CachedNetworkImage(
+                        imageUrl: imageUrl,
                         fit: BoxFit.contain,
-                        errorBuilder: (_, __, ___) => Icon(
+                        placeholder: (_, __) => Icon(
+                          icon ?? Icons.category,
+                          size: 36,
+                          color: selected ? Colors.white.withOpacity(0.5) : theme.colorScheme.primary.withOpacity(0.3),
+                        ),
+                        errorWidget: (_, __, ___) => Icon(
                           icon ?? Icons.category,
                           size: 36,
                           color: selected ? Colors.white : theme.colorScheme.primary,
@@ -362,7 +376,10 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
             children: [
               _buildHomeContent(), // index 0
               const CalendarScreen(), // index 1
-              const ContributeScreen(), // index 2 (full page, scrollable)
+              ChangeNotifierProvider(
+                create: (_) => GamificationProvider(),
+                child: const ContributeScreen(),
+              ), // index 2 (full page, scrollable)
               const ProfileScreen(), // index 3
             ],
           ),
@@ -445,11 +462,21 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
   String _selectedDateFilter = '';
   DateTime? _selectedCustomDate;
 
+  // Cached filtered events to avoid repeated DateTime.parse() calls
+  List<EventModel>? _cachedFilteredEvents;
+  String _cachedFilterKey = '';
+
   /// Returns the subset of [_events] that match the active date-filter chip.
-  /// If no chip is selected the full list is returned.
+  /// Uses caching to avoid re-parsing dates on every access.
   List<EventModel> get _filteredEvents {
     if (_selectedDateFilter.isEmpty) return _events;
 
+    // Build a cache key from filter state
+    final cacheKey = '$_selectedDateFilter|$_selectedCustomDate|${_events.length}';
+    if (_cachedFilteredEvents != null && _cachedFilterKey == cacheKey) {
+      return _cachedFilteredEvents!;
+    }
+
     final now = DateTime.now();
     final today = DateTime(now.year, now.month, now.day);
 
@@ -481,7 +508,7 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         return _events;
     }
 
-    return _events.where((e) {
+    _cachedFilteredEvents = _events.where((e) {
       try {
         final eStart = DateTime.parse(e.startDate);
         final eEnd = DateTime.parse(e.endDate);
@@ -491,6 +518,8 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         return false;
       }
     }).toList();
+    _cachedFilterKey = cacheKey;
+    return _cachedFilteredEvents!;
   }
 
   Future<void> _onDateChipTap(String label) async {
@@ -501,6 +530,7 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         setState(() {
           _selectedCustomDate = picked;
           _selectedDateFilter = 'Date';
+          _cachedFilteredEvents = null; // invalidate cache
         });
         _showFilteredEventsSheet(
           '${picked.day.toString().padLeft(2, '0')} ${_monthName(picked.month)} ${picked.year}',
@@ -509,12 +539,14 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         setState(() {
           _selectedDateFilter = '';
           _selectedCustomDate = null;
+          _cachedFilteredEvents = null;
         });
       }
     } else {
       setState(() {
         _selectedDateFilter = label;
         _selectedCustomDate = null;
+        _cachedFilteredEvents = null; // invalidate cache
       });
       _showFilteredEventsSheet(label);
     }
@@ -663,12 +695,17 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     if (imageUrl != null && imageUrl.isNotEmpty && imageUrl.startsWith('http')) {
       imageWidget = ClipRRect(
         borderRadius: BorderRadius.circular(12),
-        child: Image.network(
-          imageUrl,
+        child: CachedNetworkImage(
+          imageUrl: imageUrl,
           width: 80,
           height: 80,
           fit: BoxFit.cover,
-          errorBuilder: (_, __, ___) => Container(
+          placeholder: (_, __) => Container(
+            width: 80, height: 80,
+            decoration: BoxDecoration(color: Colors.grey.shade200, borderRadius: BorderRadius.circular(12)),
+            child: const Center(child: SizedBox(width: 20, height: 20, child: CircularProgressIndicator(strokeWidth: 2))),
+          ),
+          errorWidget: (_, __, ___) => Container(
             width: 80, height: 80,
             decoration: BoxDecoration(color: Colors.grey.shade200, borderRadius: BorderRadius.circular(12)),
             child: Icon(Icons.image, color: Colors.grey.shade400),
@@ -1426,10 +1463,16 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
           children: [
             // Background image
             img != null && img.isNotEmpty
-                ? Image.network(
-                    img,
+                ? CachedNetworkImage(
+                    imageUrl: img,
                     fit: BoxFit.cover,
-                    errorBuilder: (_, __, ___) => Container(
+                    width: double.infinity,
+                    height: double.infinity,
+                    placeholder: (_, __) => Container(
+                      color: const Color(0xFF374151),
+                      child: const Center(child: SizedBox(width: 24, height: 24, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white38))),
+                    ),
+                    errorWidget: (_, __, ___) => Container(
                       color: const Color(0xFF374151),
                       child: const Icon(Icons.image, color: Colors.white38, size: 40),
                     ),
@@ -1613,7 +1656,14 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
             ClipRRect(
               borderRadius: BorderRadius.circular(12),
               child: img != null && img.isNotEmpty
-                  ? Image.network(img, width: 96, height: double.infinity, fit: BoxFit.cover, errorBuilder: (_, __, ___) => Container(width: 96, color: theme.dividerColor))
+                  ? CachedNetworkImage(
+                      imageUrl: img,
+                      width: 96,
+                      height: double.infinity,
+                      fit: BoxFit.cover,
+                      placeholder: (_, __) => Container(width: 96, color: theme.dividerColor, child: const Center(child: SizedBox(width: 20, height: 20, child: CircularProgressIndicator(strokeWidth: 2)))),
+                      errorWidget: (_, __, ___) => Container(width: 96, color: theme.dividerColor),
+                    )
                   : Container(width: 96, height: double.infinity, color: theme.dividerColor),
             ),
             const SizedBox(width: 14),
@@ -1671,12 +1721,21 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
                 ClipRRect(
                   borderRadius: BorderRadius.circular(18),
                   child: img != null && img.isNotEmpty
-                      ? Image.network(
-                          img,
+                      ? CachedNetworkImage(
+                          imageUrl: img,
                           width: 220,
                           height: 180,
                           fit: BoxFit.cover,
-                          errorBuilder: (_, __, ___) => Container(
+                          placeholder: (_, __) => Container(
+                            width: 220,
+                            height: 180,
+                            decoration: BoxDecoration(
+                              color: theme.dividerColor,
+                              borderRadius: BorderRadius.circular(18),
+                            ),
+                            child: const Center(child: SizedBox(width: 24, height: 24, child: CircularProgressIndicator(strokeWidth: 2))),
+                          ),
+                          errorWidget: (_, __, ___) => Container(
                             width: 220,
                             height: 180,
                             decoration: BoxDecoration(
@@ -1833,12 +1892,21 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
                 ClipRRect(
                   borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
                   child: img != null && img.isNotEmpty
-                      ? Image.network(
-                          img,
+                      ? CachedNetworkImage(
+                          imageUrl: img,
                           width: double.infinity,
                           height: 200,
                           fit: BoxFit.cover,
-                          errorBuilder: (_, __, ___) => Container(
+                          placeholder: (_, __) => Container(
+                            width: double.infinity,
+                            height: 200,
+                            decoration: BoxDecoration(
+                              color: theme.dividerColor,
+                              borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
+                            ),
+                            child: const Center(child: SizedBox(width: 28, height: 28, child: CircularProgressIndicator(strokeWidth: 2))),
+                          ),
+                          errorWidget: (_, __, ___) => Container(
                             width: double.infinity,
                             height: 200,
                             decoration: BoxDecoration(
@@ -1961,7 +2029,7 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     try {
       final all = await _eventsService.getEventsByPincode(_pincode);
       final filtered = id == -1 ? all : all.where((e) => e.eventTypeId == id).toList();
-      if (mounted) setState(() => _events = filtered);
+      if (mounted) setState(() { _events = filtered; _cachedFilteredEvents = null; });
     } catch (e) {
       if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
     }