feat: refactor agent filter sheet to support dynamic API-driven types and update professional card layout

lib/features/agents/presentation/widgets/agent_filter_sheet.dart

@@ -10,6 +10,7 @@ class AgentFilterSheet extends StatefulWidget {
   final String? selectedAgentTypeId;
   final void Function(Map<String, List<String>> filters) onApply;
   final VoidCallback onClearAll;
+  final void Function(String? agentTypeId)? onListingTypeChange;
 
   const AgentFilterSheet({
     super.key,
@@ -19,6 +20,7 @@ class AgentFilterSheet extends StatefulWidget {
     this.selectedAgentTypeId,
     required this.onApply,
     required this.onClearAll,
+    this.onListingTypeChange,
   });
 
   @override
@@ -28,6 +30,7 @@ class AgentFilterSheet extends StatefulWidget {
 class _AgentFilterSheetState extends State<AgentFilterSheet> {
   late Map<String, List<String>> _filters;
   final Map<String, bool> _expandedSections = {};
+  String? _selectedAgentTypeId;
 
   @override
   void initState() {
@@ -37,6 +40,7 @@ class _AgentFilterSheetState extends State<AgentFilterSheet> {
     for (final entry in widget.currentFilters.entries) {
       _filters[entry.key] = List<String>.from(entry.value);
     }
+    _selectedAgentTypeId = widget.selectedAgentTypeId;
     // Expand all sections by default
     for (final field in widget.filterFields) {
       _expandedSections[field.slug] = true;
@@ -231,33 +235,47 @@ class _AgentFilterSheetState extends State<AgentFilterSheet> {
     );
   }
 
-  List<Widget> _buildListingTypeChips() {
-    // Find "Professional" and "Lender" agent types
-    final types = <_ListingChip>[];
-    for (final at in widget.agentTypes) {
-      final name = at.name.toLowerCase();
-      if (name == 'professional' || name == 'agent') {
-        types.add(_ListingChip(label: 'Agents', id: at.id));
-      } else if (name == 'lender') {
-        types.add(_ListingChip(label: 'Lenders', id: at.id));
-      }
-    }
-    if (types.isEmpty) {
-      types.add(const _ListingChip(label: 'Agents', id: null));
-      types.add(const _ListingChip(label: 'Lenders', id: null));
+  /// Pluralize an agent type name for display (e.g. "Agent" → "Agents",
+  /// "Lender" → "Lenders", "Property Manager" → "Property Managers").
+  /// Falls back to the raw name if it's already plural-looking.
+  String _displayLabel(String name) {
+    final trimmed = name.trim();
+    if (trimmed.isEmpty) return trimmed;
+    final lower = trimmed.toLowerCase();
+    if (lower.endsWith('s')) return trimmed; // already plural
+    if (lower.endsWith('y')) {
+      return '${trimmed.substring(0, trimmed.length - 1)}ies';
     }
+    return '${trimmed}s';
+  }
 
-    return types.map((chip) {
-      final isSelected = chip.id == widget.selectedAgentTypeId;
+  List<Widget> _buildListingTypeChips() {
+    // Render one chip per backend agent type — fully driven by API data
+    if (widget.agentTypes.isEmpty) return const [];
+
+    return widget.agentTypes.map((at) {
+      final isSelected = at.id == _selectedAgentTypeId;
       return Padding(
         padding: const EdgeInsets.only(left: 12),
-        child: Text(
-          chip.label,
-          style: TextStyle(
-            fontFamily: 'SourceSerif4',
-            fontSize: 18,
-            fontWeight: isSelected ? FontWeight.w500 : FontWeight.w400,
-            color: AppColors.primaryDark,
+        child: GestureDetector(
+          behavior: HitTestBehavior.opaque,
+          onTap: () {
+            setState(() {
+              // Toggle off when tapping the already-selected chip
+              _selectedAgentTypeId = isSelected ? null : at.id;
+            });
+            widget.onListingTypeChange?.call(_selectedAgentTypeId);
+          },
+          child: Text(
+            _displayLabel(at.name),
+            style: TextStyle(
+              fontFamily: 'SourceSerif4',
+              fontSize: 18,
+              fontWeight: isSelected ? FontWeight.w700 : FontWeight.w400,
+              color: isSelected
+                  ? AppColors.accentOrange
+                  : AppColors.primaryDark,
+            ),
           ),
         ),
       );
@@ -322,12 +340,6 @@ class _AgentFilterSheetState extends State<AgentFilterSheet> {
   }
 }
 
-class _ListingChip {
-  final String label;
-  final String? id;
-  const _ListingChip({required this.label, required this.id});
-}
-
 class _FilterOptionsList extends StatefulWidget {
   final FilterableField field;
   final bool Function(String value) isSelected;