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Rene Luria 8d1155224d fix: resolve Prism syntax highlighting error in peer config modal

The PeerViewModal and InterfaceViewModal components displayed:
  Error: The language "undefined" has no grammar.

Root cause: vue-prism-component bundles its own instance of prismjs
(separate from the one imported elsewhere), so registering the ini
grammar on a different Prism instance had no effect on the one
actually performing the highlighting.

Fix: bypass vue-prism-component entirely. Import a single Prism
instance via a new helper (frontend/src/helpers/prism-setup.js) that
also registers the ini grammar, then render highlighted HTML directly
with <pre><code v-html="highlightedConfig">. This ensures the same
Prism object that owns the ini grammar is the one calling highlight().

Affected files:
- frontend/src/helpers/prism-setup.js (new): imports prismjs, defines
  the ini grammar on the Prism instance, re-exports it
- frontend/src/components/PeerViewModal.vue: replaces <Prism> with
  v-html using the shared Prism instance
- frontend/src/components/InterfaceViewModal.vue: same replacement
- frontend/src/main.js: removes the now-unused prism-setup import

Fixes #726

2026-07-10 17:49:36 +02:00