opt.: add a btn to minimize ai dialog (#1004)

* opt.: add a btn to minimize ai dialog
Fixes #1003

* opt.

* opt.

lib/view/page/ssh/page/ask_ai.dart

@@ -84,6 +84,7 @@ class _AskAiSheetState extends ConsumerState<_AskAiSheet> {
   String? _streamingContent;
   String? _error;
   bool _isStreaming = false;
+  bool _isMinimized = false;
 
   @override
   void initState() {
@@ -387,9 +388,20 @@ class _AskAiSheetState extends ConsumerState<_AskAiSheet> {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     final bottomPadding = MediaQuery.viewInsetsOf(context).bottom;
+    final heightFactor = _isMinimized ? 0.18 : 0.85;
 
-    return FractionallySizedBox(
-      heightFactor: 0.85,
+    return TweenAnimationBuilder<double>(
+      tween: Tween<double>(end: heightFactor),
+      duration: const Duration(milliseconds: 200),
+      curve: Curves.easeOutCubic,
+      builder: (context, animatedHeightFactor, child) {
+        return ClipRect(
+          child: FractionallySizedBox(
+            heightFactor: animatedHeightFactor,
+            child: child,
+          ),
+        );
+      },
       child: SafeArea(
             child: Column(
               children: [
@@ -402,10 +414,21 @@ class _AskAiSheetState extends ConsumerState<_AskAiSheet> {
                   if (_isStreaming)
                     const SizedBox(height: 16, width: 16, child: CircularProgressIndicator(strokeWidth: 2)),
                   const Spacer(),
+                  IconButton(
+                    icon: Icon(_isMinimized ? Icons.unfold_more : Icons.unfold_less),
+                    tooltip: libL10n.fold,
+                    onPressed: () {
+                      FocusManager.instance.primaryFocus?.unfocus();
+                      setState(() {
+                        _isMinimized = !_isMinimized;
+                      });
+                    },
+                  ),
                   IconButton(icon: const Icon(Icons.close), onPressed: () => Navigator.of(context).pop()),
                 ],
               ),
             ),
+            if (!_isMinimized) ...[
               Expanded(
                 child: Scrollbar(
                   controller: _scrollController,
@@ -476,6 +499,8 @@ class _AskAiSheetState extends ConsumerState<_AskAiSheet> {
                   ],
                 ).cardx,
               ),
+            ] else
+              const SizedBox(height: 8),
               ],
             ),
           ),