Fix File Diff URL Redirect (#116)

Summary:
## What Changed
- Enhanced File Diff navigation to support direct URL access via `view=file_diff` parameter
- Fixed active tab highlighting when navigating directly to File Diff view
- Updated website version from 0.2.0 to 0.2.3

## Files Modified
- `website/src/App.tsx` - Added URL routing logic for File Diff view
- `website/package.json` & `website/package-lock.json` - Version bump

**Impact**: Users can now directly access and bookmark File Diff view URLs with proper tab state.

Pull Request resolved: #116

Reviewed By: sfzhu93

Differential Revision: D82752237

Pulled By: FindHao

fbshipit-source-id: 009c53074ccc2722b5ae2bf171f54bef93f7c4a4

Author: FindHao

website/package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "tritonparse-website",
   "private": true,
-  "version": "0.2.0",
+  "version": "0.2.3",
   "type": "module",
   "scripts": {
     "dev": "vite",

website/package.json

@@ -70,6 +70,9 @@ function App() {
       const newUrl = new URL(window.location.href);
       newUrl.searchParams.set("json_url", jsonUrl);
       window.history.replaceState({}, "", newUrl.toString());
+    } else if (view === "file_diff") {
+      // Allow direct navigation to File Diff even without json_url
+      setActiveTab("file_diff");
     }
 
     // Check if fb directory exists and load internal utils if available
@@ -132,6 +135,8 @@ function App() {
         // Then, determine which view to show
         if (view === "ir_code_comparison") {
           setActiveTab("comparison");
+        } else if (view === "file_diff") {
+          setActiveTab("file_diff");
         }
 
         setDataLoaded(true);
@@ -201,6 +206,8 @@ function App() {
         // Then, determine which view to show
         if (initialView === "ir_code_comparison") {
           setActiveTab("comparison");
+        } else if (initialView === "file_diff") {
+          setActiveTab("file_diff");
         }
         setDataLoaded(true);
         setLoadedUrl(url);
@@ -212,6 +219,8 @@ function App() {
         // Add view and kernel_hash parameters if applicable
         if (initialView === "ir_code_comparison") {
           newUrl.searchParams.set("view", "ir_code_comparison");
+        } else if (initialView === "file_diff") {
+          newUrl.searchParams.set("view", "file_diff");
         }
 
         if (kernelHash) {