Fix Edge Creation on Cloud

[yilinxia]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes edge creation functionality on cloud by replacing hardcoded localhost URLs with configurable API endpoints. This ensures the application can properly communicate with the backend when deployed in cloud environments.

• Replaces hardcoded localhost URL with configurable API endpoint
• Adds new CREATE_EDGES_ON_GRAPH endpoint to the API configuration

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/views/EdgePanel.tsx	Updates fetch call to use configurable API endpoint instead of hardcoded localhost URL
src/lib/config.ts	Adds CREATE_EDGES_ON_GRAPH endpoint configuration

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