feat: Implement expandable expertise tags on the agent detail screen and adjust chat screen lifecycle to clear active conversation in deactivate.

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

@@ -675,10 +675,11 @@ class _AgentCardState extends State<_AgentCard> {
                 // Specialization tags
                 if (specializations.isNotEmpty) ...[
                   Wrap(
-                    spacing: 8,
-                    runSpacing: 8,
+                    alignment: WrapAlignment.start,
+                    spacing: 6,
+                    runSpacing: 6,
                     children: specializations
-                        .take(8)
+                        .take(6)
                         .map((tag) => _buildTag(tag))
                         .toList(),
                   ),
@@ -797,18 +798,21 @@ class _AgentCardState extends State<_AgentCard> {
 
   Widget _buildTag(String label) {
     return Container(
-      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
+      height: 28,
+      padding: const EdgeInsets.symmetric(horizontal: 10),
+      alignment: Alignment.center,
       decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(15),
+        borderRadius: BorderRadius.circular(14),
         border: Border.all(color: AppColors.primaryDark, width: 0.7),
       ),
       child: Text(
         label,
         style: const TextStyle(
           fontFamily: 'SourceSerif4',
-          fontSize: 14,
+          fontSize: 13,
           fontWeight: FontWeight.w400,
           color: AppColors.primaryDark,
+          height: 1,
         ),
       ),
     );