fix(web): resolve Vercel build errors from security hardening PR

- ProcessFlowModal: revert import from non-existent @/lib/lucide-icons back to lucide-react
- embedding-pipeline: remove extra argument in executeQuery call (signature only accepts 1 arg)

Both issues were introduced in PR #475 (web-security-hardening).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

gitnexus-web/src/components/ProcessFlowModal.tsx

@@ -5,7 +5,7 @@
  */
 
 import { useEffect, useRef, useCallback, useState } from 'react';
-import { X, GitBranch, Copy, Focus, Layers, ZoomIn, ZoomOut } from '@/lib/lucide-icons';
+import { X, GitBranch, Copy, Focus, Layers, ZoomIn, ZoomOut } from 'lucide-react';
 import mermaid from 'mermaid';
 import DOMPurify from 'dompurify';
 import { ProcessData, generateProcessMermaid } from '../lib/mermaid-generator';

gitnexus-web/src/core/embeddings/embedding-pipeline.ts

@@ -124,7 +124,7 @@ const createVectorIndex = async (
   `;
 
   try {
-    await executeQuery(cypher, false); // readOnly=false: CALL CREATE_VECTOR_INDEX is a write operation
+    await executeQuery(cypher);
   } catch (error) {
     // Index might already exist
     if (import.meta.env.DEV) {