feat(repeater): add map-based neighbors tab

[kNoAPP]

Description

Turns the repeater Neighbors tab into a spatial, map-based view, and does
the map-layer refactor that #178 called out as a prerequisite.

Reusable map layer (refactor)

• Extracts BaseLeafletMap from the monolithic Map view — a store-decoupled
  component that takes an arbitrary nodes set plus an optional edges set
  ({ from, to, label }, drawn as polylines with a permanent midpoint label).
  It owns only the shared machinery (tiles, single-world bounds, min-zoom
  clamp, theme swap, marker + edge layers).
• Moves the shared nodeIcon/escapeHtml primitives into a client-only
  lib/map/leafletIcon module, and the category legend into a shared
  MapLegend component (with a children slot; the Map page supplies the
  favorites-only toggle there).
• Rewrites MapView as a thin Map-page wrapper that composes BaseLeafletMap
  and keeps the page-only concerns (location-pick mode, viewport persistence,
  favorites filter, marker cap). No behavior change to the Map page.

Neighbors map (feature)

• Adds NeighborsMap (loaded via dynamic/ssr: false), which anchors the
  administered repeater and plots each neighbor that resolves to a saved
  contact/advert with a GPS fix, drawing an SNR-labeled link from the repeater
  to each. Coordinates are resolved by matching the neighbor's pubkey prefix in
  new lib/map/nodes helpers (repeaterAnchorNode, locateNeighborNode).
• Makes the Neighbors tab map-only: the map fills the full tab height, with the
  Refresh control pinned to its top-right corner. When nothing can be mapped
  (the repeater or its neighbors have no location, none were heard, or a read
  errored), a same-sized placeholder explains why. Clicking a neighbor marker
  opens its manage panel; the shared legend documents the marker categories.

Reuses the existing neighbors CLI command — no protocol-layer changes.

Issues

• Closes Map-based Neighbors tab (repeater + neighbors + SNR links) #178

Type of Change

• ❌ ! -- Breaking change (fix or feature that would cause existing
  functionality to change)
• ✨ feat -- New feature (non-breaking change which adds functionality)
• 🛠️ fix -- Bug fix (non-breaking change which fixes an issue)
• 📝 docs -- Additional or updated documentation
• 🎨 style -- Code style changes (formatting, missing semi colons, etc)
• 🧹 refactor -- Code refactor
• ⚡ perf -- Performance improvement
• 🧪 test -- Tests (adding or updating tests)
• 🏗️ build -- Build system or external dependencies changes
• ✅ ci -- Build configuration change
• 🗑️ chore -- Grunt tasks
• ⏪ revert -- Revert previous changes

[Copilot]

Pull request overview

Adds a reusable Leaflet map layer and a spatial repeater-neighbors view with SNR links.

Changes:

• Extracts shared map, marker, legend, and edge infrastructure.
• Replaces the neighbors table with a map and localized fallback states.
• Refactors the main Map page to use the shared layer.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
app/globals.css	Styles neighbor links and SNR labels.
components/BaseLeafletMap.tsx	Adds reusable Leaflet map infrastructure.
components/MapLegend.tsx	Extracts the shared map legend.
components/MapView.tsx	Composes the main map from shared components.
components/NeighborsMap.tsx	Builds the repeater-neighbor spatial view.
components/RepeaterView.tsx	Integrates the map-only neighbors tab.
lib/map/config.ts	Defines edge styling and viewport types.
lib/map/leafletIcon.ts	Extracts shared Leaflet icon helpers.
lib/map/nodes.ts	Adds map edges and neighbor-node resolution.
locales/de.json	Updates German neighbor states.
locales/en.json	Defines authoritative neighbor states.
locales/es.json	Updates Spanish neighbor states.
locales/fr.json	Updates French neighbor states.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

components/RepeaterView.tsx:660

• This count includes a row that resolves back to the repeater anchor, but buildNeighborMap intentionally drops that self-edge. If that is the only resolvable row, showMap becomes true and renders an anchor-only map with no neighbor. Apply the same anchor exclusion here.

  const mappableCount = useMemo(() => {
    if (!contact.advLat || !contact.advLon) return 0;
    return (neighbors ?? []).filter((n) =>
      locateNeighborNode(n.prefix, contacts, advertCache),
    ).length;

[Copilot]

Pull request overview

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 13 out of 13 changed files in this pull request and generated no new comments.