Deliverable Submission UI

[chazdj]

Priority: Medium

Story Points: 3

Parent Epic: #58

Description

Frontend interface for deliverable submission.

Requirements

• Upload field / text input
• Submit button
• Status feedback

Acceptance Criteria

• Visible only when application is accepted
• Success + error states handled
• UI reflects result

Definition of Done

• React UI completed
• Connected to API
• Tested