feat(api): update frontend components to use versioned API_URL

- Remove hardcoded /api/ from all fetch calls
- API_URL now includes /api/v1 prefix from config
- Updated 8 files:
  - components/PerformanceDashboard.tsx
  - components/ImpactAnalyzer.tsx
  - components/SearchPanel.tsx
  - components/dashboard/CommandPalette.tsx
  - components/dashboard/DashboardHome.tsx
  - hooks/useCachedQuery.ts
  - pages/LandingPage.tsx
  - pages/Playground.tsx

Before: ${API_URL}/api/repos
After:  ${API_URL}/repos

Part of #55

Author: DevanshuNEU

frontend/src/components/ImpactAnalyzer.tsx

@@ -32,7 +32,7 @@ export function ImpactAnalyzer({ repoId, apiUrl, apiKey }: ImpactAnalyzerProps)
     setError('')
 
     try {
-      const response = await fetch(`${apiUrl}/api/repos/${repoId}/impact`, {
+      const response = await fetch(`${apiUrl}/repos/${repoId}/impact`, {
         method: 'POST',
         headers: {
           'Authorization': `Bearer ${apiKey}`,

frontend/src/components/PerformanceDashboard.tsx

@@ -17,7 +17,7 @@ export function PerformanceDashboard({ apiUrl, apiKey }: PerformanceProps) {
 
   const loadMetrics = async () => {
     try {
-      const response = await fetch(`${apiUrl}/api/metrics`, {
+      const response = await fetch(`${apiUrl}/metrics`, {
         headers: { 'Authorization': `Bearer ${apiKey}` }
       })
       const result = await response.json()

frontend/src/components/SearchPanel.tsx

@@ -25,7 +25,7 @@ export function SearchPanel({ repoId, apiUrl, apiKey }: SearchPanelProps) {
     const startTime = Date.now()
 
     try {
-      const response = await fetch(`${apiUrl}/api/search`, {
+      const response = await fetch(`${apiUrl}/search`, {
         method: 'POST',
         headers: {
           'Authorization': `Bearer ${apiKey}`,

frontend/src/components/dashboard/CommandPalette.tsx

@@ -83,7 +83,7 @@ export function CommandPalette({ isOpen, onClose }: CommandPaletteProps) {
 
   const fetchRepos = async () => {
     try {
-      const response = await fetch(`${API_URL}/api/repos`, {
+      const response = await fetch(`${API_URL}/repos`, {
         headers: { 'Authorization': `Bearer ${session?.access_token}` }
       })
       const data = await response.json()

frontend/src/components/dashboard/DashboardHome.tsx

@@ -27,7 +27,7 @@ export function DashboardHome() {
     if (!session?.access_token) return
 
     try {
-      const response = await fetch(`${API_URL}/api/repos`, {
+      const response = await fetch(`${API_URL}/repos`, {
         headers: { 'Authorization': `Bearer ${session.access_token}` }
       })
       const data = await response.json()
@@ -50,7 +50,7 @@ export function DashboardHome() {
       setLoading(true)
       const name = gitUrl.split('/').pop()?.replace('.git', '') || 'unknown'
 
-      const response = await fetch(`${API_URL}/api/repos`, {
+      const response = await fetch(`${API_URL}/repos`, {
         method: 'POST',
         headers: {
           'Authorization': `Bearer ${session?.access_token}`,
@@ -61,7 +61,7 @@ export function DashboardHome() {
 
       const data = await response.json()
 
-      await fetch(`${API_URL}/api/repos/${data.repo_id}/index`, {
+      await fetch(`${API_URL}/repos/${data.repo_id}/index`, {
         method: 'POST',
         headers: { 'Authorization': `Bearer ${session?.access_token}` }
       })
@@ -85,7 +85,7 @@ export function DashboardHome() {
 
     try {
       setLoading(true)
-      await fetch(`${API_URL}/api/repos/${selectedRepo}/index`, {
+      await fetch(`${API_URL}/repos/${selectedRepo}/index`, {
         method: 'POST',
         headers: { 'Authorization': `Bearer ${session?.access_token}` }
       })

frontend/src/hooks/useCachedQuery.ts

@@ -49,7 +49,7 @@ export function useDependencyGraph({ repoId, apiKey, enabled = true }: UseCached
     queryKey: ['dependencies', repoId],
     queryFn: async () => {
       const data = await fetchWithAuth(
-        `${API_URL}/api/repos/${repoId}/dependencies`,
+        `${API_URL}/repos/${repoId}/dependencies`,
         apiKey
       )
       // Save to localStorage on successful fetch
@@ -77,7 +77,7 @@ export function useStyleAnalysis({ repoId, apiKey, enabled = true }: UseCachedQu
     queryKey: ['style-analysis', repoId],
     queryFn: async () => {
       const data = await fetchWithAuth(
-        `${API_URL}/api/repos/${repoId}/style-analysis`,
+        `${API_URL}/repos/${repoId}/style-analysis`,
         apiKey
       )
       saveToCache('style-analysis', repoId, data)
@@ -109,7 +109,7 @@ export function useImpactAnalysis({
     queryKey: ['impact', repoId, filePath],
     queryFn: async () => {
       const data = await fetchWithAuth(
-        `${API_URL}/api/repos/${repoId}/impact?file_path=${encodeURIComponent(filePath)}`,
+        `${API_URL}/repos/${repoId}/impact?file_path=${encodeURIComponent(filePath)}`,
         apiKey
       )
       saveToCache(cacheKey, repoId, data)

frontend/src/pages/LandingPage.tsx

@@ -114,7 +114,7 @@ export function LandingPage() {
   const remaining = FREE_LIMIT - searchCount
 
   useEffect(() => {
-    fetch(`${API_URL}/api/playground/repos`)
+    fetch(`${API_URL}/playground/repos`)
       .then(res => res.json())
       .then(data => {
         const available = data.repos?.filter((r: any) => r.available).map((r: any) => r.id) || []
@@ -132,7 +132,7 @@ export function LandingPage() {
     const startTime = Date.now()
 
     try {
-      const response = await fetch(`${API_URL}/api/playground/search`, {
+      const response = await fetch(`${API_URL}/playground/search`, {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ query: q, demo_repo: selectedRepo, max_results: 10 })

frontend/src/pages/Playground.tsx

@@ -48,7 +48,7 @@ export function Playground({ onSignupClick }: PlaygroundProps) {
     const startTime = Date.now()
 
     try {
-      const response = await fetch(`${API_URL}/api/playground/search`, {
+      const response = await fetch(`${API_URL}/playground/search`, {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({