Visual QA contract

Visual experience is a release gate for Mellow.

Required terminal sizes

80×24 — compact

• editing canvas remains dominant
• save/commands/quit affordances remain visible
• overlays fit without clipping
• file path may truncate before core actions disappear

120×34 — comfortable

• full primary shortcut strip
• command palette centered with calm whitespace
• status text readable without crowding

160×45 — expanded

• do not fill spare space with permanent panels
• preserve the same calm hierarchy rather than becoming an IDE dashboard

Interaction smoke test

1. open fixtures/demo.rs
2. click three different cursor positions
3. type ASCII and Unicode
4. paste multiple lines
5. undo and redo
6. open Ctrl+P and filter a command
7. open F1 help and dismiss it
8. edit, press Ctrl+Q, test Cancel and Save & Quit
9. resize while editing and while an overlay is open
10. exit and confirm the shell is restored correctly

Unicode smoke test

Use fixtures/unicode.txt and inspect:

• Telugu
• Japanese
• emoji
• combining marks
• wide CJK characters
• tabs

A visually attractive editor that misplaces the cursor on real Unicode text is not visually correct.