Tab on empty input pastes clipboard for transaction IDs or enters HyperBEAM launch mode

[dpshde]

Feature Request

Description

When the search input is empty and the user presses Tab:

1. If clipboard contains a valid Arweave transaction ID (43-44 chars, valid pattern) → Auto-paste and process as transaction
2. If clipboard contains anything else → Enter launch mode for HyperBEAM hashpath writing

Acceptance Criteria

• Detect empty input field on Tab keypress
• Validate clipboard content against Arweave transaction ID criteria
• Auto-paste and process valid transaction IDs
• Enter launch mode for invalid/other clipboard content
• Maintain existing keyboard navigation behavior for non-empty inputs

Technical Implementation

• Modify keyboard shortcuts handler in
• Add clipboard validation logic for transaction ID patterns
• Implement launch mode activation (new state/mode)
• Update search bar component to handle the new Tab behavior

Context

This feature enhances the quick-launch workflow for power users who frequently work with transaction IDs while providing a smooth transition to the upcoming HyperBEAM launch mode functionality.

Priority

High - Improves user experience for transaction handling and prepares for HyperBEAM integration