justin e7e04b740e Diagnostics as dialogs (no dock) + real car-style gauges ...

Diagnostics: removed the always-on right-side Diagnostics dock (it ate screen
space on every view). Read Codes now opens a modal dialog listing codes
grouped stored/pending/permanent with descriptions (no-start codes bold red);
Clear Codes keeps its confirmation, and on re-read pops a dialog only if codes
returned. Dropped the View > Show Diagnostics Panel toggle.

Gauges: replaced the plain progress-arc with a proper automotive dial -- round
face + bezel, major/minor tick marks, a numeric scale (rounded labels), a red
needle + center hub, a colored rim arc for the value, and an amber peak tick.
Digital readout + name/unit below.

Validated headless: no Diagnostics dock; Read Codes opens the Trouble Codes
dialog; gauge view renders. obdcore + diagnostics tests still pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016yT89n4zR4qbrySoSiEyZs

2026-06-30 15:12:49 -04:00

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