Limit tag list size, make changelog use a list instead of \n, make links clickable in node tags

lib/services/changelog_service.dart

@@ -17,6 +17,22 @@ class ChangelogService {
   Map<String, dynamic>? _changelogData;
   bool _initialized = false;
 
+  /// Parse changelog content from either string or array format
+  String? _parseChangelogContent(dynamic content) {
+    if (content == null) return null;
+    
+    if (content is String) {
+      // Legacy format: single string with \n
+      return content.isEmpty ? null : content;
+    } else if (content is List) {
+      // New format: array of strings
+      final lines = content.whereType<String>().where((line) => line.isNotEmpty).toList();
+      return lines.isEmpty ? null : lines.join('\n');
+    }
+    
+    return null;
+  }
+
   /// Initialize the service by loading changelog data
   Future<void> init() async {
     if (_initialized) return;
@@ -89,8 +105,7 @@ class ChangelogService {
       return null;
     }
 
-    final content = versionData['content'] as String?;
-    return (content?.isEmpty == true) ? null : content;
+    return _parseChangelogContent(versionData['content']);
   }
 
   /// Get the changelog content that should be displayed (may be combined from multiple versions)
@@ -112,8 +127,7 @@ class ChangelogService {
     final versionData = _changelogData![version] as Map<String, dynamic>?;
     if (versionData == null) return null;
     
-    final content = versionData['content'] as String?;
-    return (content?.isEmpty == true) ? null : content;
+    return _parseChangelogContent(versionData['content']);
   }
 
   /// Get all changelog entries (for settings page)
@@ -125,7 +139,7 @@ class ChangelogService {
     for (final entry in _changelogData!.entries) {
       final version = entry.key;
       final versionData = entry.value as Map<String, dynamic>?;
-      final content = versionData?['content'] as String?;
+      final content = _parseChangelogContent(versionData?['content']);
       
       // Only include versions with non-empty content
       if (content != null && content.isNotEmpty) {
@@ -203,7 +217,7 @@ class ChangelogService {
     for (final entry in _changelogData!.entries) {
       final version = entry.key;
       final versionData = entry.value as Map<String, dynamic>?;
-      final content = versionData?['content'] as String?;
+      final content = _parseChangelogContent(versionData?['content']);
       
       // Skip versions with empty content
       if (content == null || content.isEmpty) continue;
@@ -220,7 +234,7 @@ class ChangelogService {
     // Build changelog content
     final intermediateChangelogs = intermediateVersions.map((version) {
       final versionData = _changelogData![version] as Map<String, dynamic>;
-      final content = versionData['content'] as String;
+      final content = _parseChangelogContent(versionData['content'])!; // Safe to use ! here since we filtered empty content above
       return '**Version $version:**\n$content';
     }).toList();
     

lib/widgets/node_tag_sheet.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher.dart';
+import 'package:flutter_linkify/flutter_linkify.dart';
 import '../models/osm_node.dart';
 import '../app_state.dart';
 import '../services/localization_service.dart';
@@ -127,12 +128,26 @@ class NodeTagSheet extends StatelessWidget {
                           ),
                           const SizedBox(width: 8),
                           Expanded(
-                            child: Text(
-                              e.value,
+                            child: Linkify(
+                              onOpen: (link) async {
+                                final uri = Uri.parse(link.url);
+                                if (await canLaunchUrl(uri)) {
+                                  await launchUrl(uri, mode: LaunchMode.externalApplication);
+                                } else if (context.mounted) {
+                                  ScaffoldMessenger.of(context).showSnackBar(
+                                    SnackBar(content: Text('Could not open URL: ${link.url}')),
+                                  );
+                                }
+                              },
+                              text: e.value,
                               style: TextStyle(
                                 color: Theme.of(context).colorScheme.onSurface.withOpacity(0.7),
                               ),
-                              softWrap: true,
+                              linkStyle: TextStyle(
+                                color: Theme.of(context).colorScheme.primary,
+                                decoration: TextDecoration.underline,
+                              ),
+                              options: const LinkifyOptions(humanize: false),
                             ),
                           ),
                         ],

lib/widgets/suspected_location_sheet.dart

@@ -44,8 +44,16 @@ class SuspectedLocationSheet extends StatelessWidget {
                   ),
                   const SizedBox(height: 12),
                   
-                  // Display all fields
-                  ...displayData.entries.map(
+                  // Constrain field list height to keep buttons visible
+                  ConstrainedBox(
+                    constraints: BoxConstraints(
+                      maxHeight: MediaQuery.of(context).size.height * 0.4, // Max 40% of screen height
+                    ),
+                    child: SingleChildScrollView(
+                      child: Column(
+                        children: [
+                          // Display all fields
+                          ...displayData.entries.map(
                     (e) => Padding(
                       padding: const EdgeInsets.symmetric(vertical: 2),
                       child: Row(