Use ARVREL mini vector fascia on reusable IED cards

[masarray]

Goal

Replace the runtime IED-card bitmap fascia with a compact vector adaptation of the ARVREL VirtualRelay hardware language while keeping ARSAS cards small and readable.

Design

• 50×50 WPF vector template derived from the ARVREL shell/material language.
• Keeps only hardware cues that survive card scale: layered enclosure, LED bank, LCD bezel/face, compact keypad and state rail.
• No microscopic relay labels, no scaled 560×710 operator UI, no raster Image element.
• ARVREL blue #2E6F9E retained as a restrained hardware accent.
• First status lamp and bottom rail remain data-driven through the existing card Foreground state.

Integration

• New Resources/ArvrelMiniIedFascia.xaml exposes ArvrelMiniIedRelayFrontPanelTemplate.
• App.OnStartup replaces the existing shared IedRelayFrontPanelTemplate resource before StartupUri materializes.
• Explorer and IO FAT continue using the same existing template key, so no duplicated card implementation is introduced.
• The portable smoke-test path also loads the resource, validating packaging/runtime resource availability.

Regression coverage

• Vector-only: no Image descendants.
• No microscopic TextBlock content.
• Required shell/LED/LCD/keypad/state-rail parts exist.
• Startup replacement contract is locked.
• Explorer and IO FAT are confirmed to keep the shared template key.

Provenance

Visual language adapted from masarray/arvrel Controls/VirtualRelay, both projects owned by the same author and GPL-3.0-or-later.