feat(agent): redesign project_cli with module/method/input protocol

- Replace command/subcommand/args with module/method/input envelope
- Calendar handler uses discriminated union (mode) for read operations
- Strict Pydantic models with extra='forbid' for all calendar methods
- Worker max_iters=7, router prompt simplified (removed project_cli_defaults)
- Skill index cards + per-action files for progressive disclosure
- Frontend/AG-UI aligned to module/method dispatch
- Protocol docs updated to module/method/input contract

WIP: action cards need envelope fix, 2 tests need update, memory
handler needs Pydantic models.

apps/lib/features/home/presentation/widgets/home_chat_item_renderer.dart

@@ -262,35 +262,15 @@ class HomeChatItemRenderer {
     ToolResultItem item,
   ) {
     final colorScheme = Theme.of(context).colorScheme;
-    final rootNode = item.uiSchema['root'];
-    final appearance = rootNode is Map<String, dynamic>
-        ? rootNode['appearance'] as String?
-        : null;
-    final needsOuterCard = appearance == null || appearance == 'plain';
-    final schemaContent = UiSchemaRenderer(
-      context,
-      colorScheme,
-    ).renderSchema(item.uiSchema);
-    final wrappedContent = needsOuterCard
-        ? Container(
-            width: double.infinity,
-            padding: const EdgeInsets.all(AppSpacing.md),
-            decoration: BoxDecoration(
-              color: colorScheme.surfaceContainerLow.withValues(alpha: 0.65),
-              borderRadius: BorderRadius.circular(AppRadius.lg),
-              border: Border.all(
-                color: colorScheme.outlineVariant.withValues(alpha: 0.25),
-              ),
-            ),
-            child: schemaContent,
-          )
-        : schemaContent;
+    final schemaContent = UiSchemaRenderer(context, colorScheme).renderSchema(
+      item.uiSchema,
+    );
 
     return Align(
       alignment: Alignment.centerLeft,
       child: FractionallySizedBox(
         widthFactor: _toolResultWidthFactor,
-        child: wrappedContent,
+        child: schemaContent,
       ),
     );
   }