Visor: test behavior without freezing the prototype's visual design

[lannbot]

Summary

• Remove tests that freeze provisional design choices: exact glyph geometry, selection fills/shadows, palette syntax and values, fixed strip/app-band dimensions, viewport-unit declarations, SAS typography, and maximum field widths.
• Retain confinement and identity-state checks, keyboard navigation, confirmation behavior, transition completion, narrow-screen reachability, readable contrast, and minimum touch targets.
• Allow identifiers to wrap or scroll rather than requiring a particular CSS layout.
• Restore the shared light pressed-selection fill on the identity half, as requested; retain the larger circle and its medium-dark background.

Net removal: 253 lines. No replacement visual-testing framework.

Verification

• Astra review complete.
• just check passed.
• just test passed.
• just e2e passed: all 29 Chromium scenarios.
• Mobile bounds are emulated viewport checks, not verification of physical Android browser toolbars.

Automerge will be armed.