v0.2.1

New Features

• Hex Editor — click any byte in Hex view to edit it inline. Type 2-digit hex (0-9a-f), auto-advances to next byte. Tab/Shift+Tab/Arrow keys navigate. Supports null bytes (\x00) for file upload attack testing.
• Hex Modified Highlight — edited bytes shown in pink + bold, instantly visible which bytes changed from original.
• Send/Cancel Toggle — Send disables itself + history buttons, enables Cancel. Cancel aborts in-flight request via AbortController. Response panel cleared to blank during send.
• Compact Navigation — top strip and tab heights reduced, Replay moved next to Capture.

Bug Fixes

• Fix Hex view not updating on history < > navigation
• Fix proxy passthrough forcing HTTP/2 (locked to HTTP/1.1)
• Fix focus outline on traffic-region
• Fix HOST column overflow in HTTP table

UI Improvements

• Home/End keys jump to first/last line in code-view
• HTTP Version dropdown in Replay toolbar
• Cookie syntax highlighting (pink names, sky blue separators, mint flags)