Adds the MeshCore web client to the Supply Depot catalog (host port 8500),
alongside the existing Meshtastic apps. Uses aXistem's prebuilt image of Liam
Cottle's MeshCore client (MeshCore is a sibling LoRa mesh project to Meshtastic).
The image is stock nginx serving a static Flutter build over HTTP, but the
client reaches radios via Web Bluetooth / Web Serial, which browsers only allow
from a secure (HTTPS) context. So we serve it over HTTPS: a new preinstall hook
generates a self-signed cert + a small SSL nginx config into storage/meshcore-web,
both bind-mounted into the container (the config over the image's default.conf),
publishing 443. Same one-time browser-warning approach as Vaultwarden, whose
openssl cert generation is refactored into a shared _ensureSelfSignedCert helper.
Also adds a NOMAD-specific docs section + Manage>Docs anchor, and registers the
IconAntenna icon. Meshtastic Web left unchanged.
Validated on NOMAD3 (v1.33.0-rc.1): the image + SSL config + self-signed cert
serves the MeshCore Flutter app over HTTPS 200 with working SPA fallback.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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