[Request] Optional online icon search (via Iconify API) for label editor #29

Problem

Right now, adding an icon to a label requires manually finding it online, downloading the file to disk, and then importing it into the editor. For a workflow that's otherwise fully in-browser (Web Bluetooth, no server), this manual round-trip breaks the flow.

Proposed solution

Add an optional "Icon search" panel in the web editor that queries a public icon API and lets the user drop a result straight onto the canvas, skipping the manual download/import step.

A good fit would be the public Iconify API (https://api.iconify.design), which is free, requires no API key, and aggregates 200,000+ SVG icons from 200+ open-source icon sets (Material Symbols, Tabler, Lucide, Phosphor, Feather, etc.), most under MIT/Apache-2.0/CC0. It exposes:

• /search?query=... for text search
• /{prefix}/{name}.svg to fetch the actual SVG

The SVG could be rendered to a canvas client-side and piped into the existing image import pipeline, so no changes are needed downstream (rasterization, dithering, printing stay identical).

Important constraint: graceful degradation

This should be a purely optional, additive layer:

• If the API is unreachable (offline, rate-limited, etc.), the search panel should simply show an "unavailable offline" state (or be hidden) — everything else (manual image upload, existing labels, printing) must keep working exactly as it does today.
• No local bundling of icon sets, no new required dependency for the core offline workflow — this is strictly an online convenience feature.

Happy to help test / provide feedback on any implementation approach. Thanks for the great project!