feat: add interactive terminal UI

[apresmoi]

Summary

• add an experimental standalone OpenTUI React observer with responsive Burnlist navigation, item detail, and a global generic Oven catalog
• introduce closed declarative .glyph screen documents and a frozen compiler/runtime boundary; Ovens remain data and the dashboard remains read-only
• render the animated Burnlist fire and effects from the adjacent glyphcss source checkout, with exact published-package fallback for clean builds
• render Visual Parity reference, candidate, and diff PNGs through OpenTUI native 2x2 RGBA supersampling
• derive transparent backgrounds, dividers, and selection surfaces from the host terminal palette, including VS Code themes
• keep q as universal back navigation and allow escape to exit only from the landing screen

Validation

• npm --prefix tui run verify — 19 tests passed; typecheck and standalone executable build passed
• npm run verify — passed on the current main branch
• npm audit --prefix tui --audit-level=high — 0 vulnerabilities
• clean-checkout glyphcss fallback — typecheck and standalone build passed without the sibling checkout
• git diff origin/main...HEAD --check — passed

Review notes

• root runtime dependencies remain zero; all TUI packages are development-only and isolated under tui/
• all authored source files are at most 216 lines; the larger new file is the generated package lock
• the TUI data client issues GET requests only and does not mutate canonical Burnlist or Oven state