feat: migrate clients module to patients + add docs

app/epd/clients/[...path]/route.ts

@@ -0,0 +1,31 @@
+import { redirect } from 'next/navigation';
+import { NextRequest } from 'next/server';
+
+/**
+ * Catch-all Redirect Route for /epd/clients/
+ * 
+ * Redirects all /epd/clients/* routes to /epd/patients/* for backward compatibility
+ * This ensures that old bookmarks and links continue to work after migration.
+ * 
+ * Preserves query parameters (e.g., ?tab=intake&search=test)
+ */
+
+export async function GET(
+  request: NextRequest,
+  { params }: { params: Promise<{ path: string[] }> }
+) {
+  const { path } = await params;
+  const searchParams = request.nextUrl.searchParams;
+  
+  // Build new path with query parameters
+  const newPath = `/epd/patients/${path.join('/')}`;
+  const newUrl = new URL(newPath, request.url);
+  
+  // Preserve all query parameters
+  searchParams.forEach((value, key) => {
+    newUrl.searchParams.set(key, value);
+  });
+  
+  redirect(newUrl.toString());
+}
+