fix(dependency-graph): ensure proper container height for graph rendering

Author: DevanshuNEU

frontend/src/components/DependencyGraph/GraphNode.tsx

@@ -1,5 +1,6 @@
 import { memo } from 'react'
-import { Handle, Position, NodeProps } from 'reactflow'
+import { Handle, Position } from 'reactflow'
+import type { NodeProps } from 'reactflow'
 import { FileCode2, FileJson, FileText, TestTube2, Settings, File } from 'lucide-react'
 import { cn } from '@/lib/utils'
 import type { RiskLevel } from './hooks/useImpactAnalysis'

frontend/src/components/DependencyGraph/index.tsx

@@ -286,9 +286,9 @@ function DependencyGraphInner({ repoId, apiUrl, apiKey }: DependencyGraphProps)
       />
 
       {/* Graph + Panel */}
-      <div className="flex-1 flex overflow-hidden">
+      <div className="flex-1 flex overflow-hidden min-h-[500px]">
         {/* Graph Canvas */}
-        <div className="flex-1 relative">
+        <div className="flex-1 relative h-full">
           <ReactFlow
             nodes={nodes}
             edges={edges}

frontend/src/components/dashboard/DashboardHome.tsx

@@ -286,7 +286,7 @@ export function DashboardHome() {
             </div>
 
             {/* Tab Content */}
-            <div className="bg-card border border-border rounded-xl overflow-hidden">
+            <div className="bg-card border border-border rounded-xl overflow-hidden min-h-[700px]">
               {activeTab === 'overview' && (
                 <RepoOverview 
                   repo={selectedRepoData}