feat: implement dynamic field labels for agent profile sections using backend-provided slugs

lib/features/agents/presentation/providers/agent_detail_provider.dart

@@ -292,6 +292,26 @@ class AgentDetailState {
     return '${'*' * (digits.length - 4)}${digits.substring(digits.length - 4)}';
   }
 
+  // ── Dynamic labels (fieldName from backend, with fallback) ──
+
+  String _labelForSlug(String slug, String fallback) {
+    for (final fv in fieldValues) {
+      if (fv.fieldSlug == slug && fv.fieldName.isNotEmpty) {
+        return fv.fieldName;
+      }
+    }
+    return fallback;
+  }
+
+  String get availabilityLabel =>
+      _labelForSlug('availability', 'Availability');
+
+  String get workEnvironmentLabel =>
+      _labelForSlug('preferred_work_environment', 'Preferred Work Environment');
+
+  String get bestExperienceLabel =>
+      _labelForSlug('best_experience', 'Best Experience');
+
   // ── Availability ──
 
   String get availabilityType {

lib/features/agents/presentation/screens/agent_detail_screen.dart

@@ -999,7 +999,7 @@ class _AgentDetailScreenState extends ConsumerState<AgentDetailScreen> {
           // Availability card (always show)
           _buildInfoCard(
             icon: Icons.access_time_filled,
-            title: 'Availability',
+            title: state.availabilityLabel,
             subtitle: state.availabilityType.isNotEmpty
                 ? state.availabilityType
                 : 'Not specified',
@@ -1012,7 +1012,7 @@ class _AgentDetailScreenState extends ConsumerState<AgentDetailScreen> {
           // Work environment (always show)
           _buildInfoCard(
             icon: Icons.landscape_outlined,
-            title: 'Work Environment',
+            title: state.workEnvironmentLabel,
             subtitle: '',
             description: workEnv.isNotEmpty ? workEnv : 'Not specified',
             isEmpty: workEnv.isEmpty,
@@ -1021,7 +1021,7 @@ class _AgentDetailScreenState extends ConsumerState<AgentDetailScreen> {
           // Best experience (always show)
           _buildInfoCard(
             icon: Icons.star_rounded,
-            title: 'Best Experience',
+            title: state.bestExperienceLabel,
             subtitle: '',
             description: bestExp.isNotEmpty ? bestExp : 'Not specified',
             isEmpty: bestExp.isEmpty,

lib/features/agents/presentation/screens/agent_home_screen.dart

@@ -1052,7 +1052,7 @@ class _AgentHomeContentState extends ConsumerState<_AgentHomeContent> {
           // Availability card (with title — matches web)
           _buildInfoCard(
             icon: Icons.access_time_filled,
-            title: 'Availability',
+            title: state.availabilityLabel,
             subtitle: state.availabilityType.isNotEmpty
                 ? state.availabilityType
                 : 'Not specified',
@@ -1062,18 +1062,18 @@ class _AgentHomeContentState extends ConsumerState<_AgentHomeContent> {
             isEmpty: state.availabilityType.isEmpty,
           ),
           const SizedBox(height: 16),
-          // Work environment (no title — matches web)
+          // Work environment
           _buildInfoCard(
             icon: Icons.landscape_outlined,
-            title: '',
+            title: state.workEnvironmentLabel,
             subtitle: '',
             description: workEnv,
           ),
           const SizedBox(height: 16),
-          // Testimonial preview (no title — matches web)
+          // Testimonial preview
           _buildInfoCard(
             icon: Icons.star_rounded,
-            title: '',
+            title: state.bestExperienceLabel,
             subtitle: '',
             description: testimonialText.isNotEmpty
                 ? '\u201C$testimonialText\u201D'