Language Details: Update location display

[conradarcturus]

Fixes #675

Summary: This updates the language details view, in particular the maps shown

Changes

• User experience
  • Language Details Location coordinate descriptions updated -- now differentiates between data from Glottolog and data algorithmically combined
  • Language details Location section redone, now combined both maps into 1
    • Fixed filters that may leave out constituents incidentally
    • Will always show the selected entity
    • Default shows all constituents (languages, dialects, ...) but you can turn them off
    • I wasn't sure whether to limit constituents to languages, dialects, etc... so I just put in a scope filter there (if there are nodes to filter)
  • Also made some improvements to the Language Connections section
    • Sorting by the list items by the page source
    • Fixing it so if we are viewing a language family the locales are not filtered in the tree view.
• Logical changes
  • n/a
• Data
  • New language field for the source of the coordinates
• Refactors
  • ...

Out of scope/Future work: I would really like auto-zoom but that's a different github issue #678

Test Plan and Screenshots

How to test the changes in this PR: Viewed details for various languages/language families

Page/View with link	Screenshot Before	Screenshot After
Sino-Tibetan
Chinese
French

View when the constituents are off:

[github-actions]

Cloudflare Pages preview

Preview torn down on PR close: 1 deployment(s) deleted.

[Copilot]

Pull request overview

This PR updates the Language Details view to improve how location data is presented, including consolidating location mapping UI and adding metadata to distinguish coordinate provenance (Glottolog vs computed/combined).

Changes:

• Updates the Language Details “Location” section to use a single map view with constituent toggling and scope filtering.
• Improves Language Details “Connections” by renaming/ordering constituent lists and adjusting locale filtering/sorting.
• Adds a coordsSource field to LanguageData and populates it when coordinates come from Glottolog or are computed from constituents.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/widgets/details/sections/LanguageLocation.tsx	Reworks Location UI: coordinate source messaging + consolidated map with constituent controls.
src/widgets/details/sections/LanguageConnections.tsx	Adjusts connections display (constituents label, sorting, locale filtering behavior).
src/features/transforms/filtering/selectors/LanguageScopeSelector.tsx	Adds optional display prop to control selector presentation.
src/features/data/load/extra_entities/GlottologData.tsx	Marks Glottolog-provided coordinates with coordsSource.
src/features/data/compute/computeRecursiveLanguageData.ts	Marks computed (averaged) coordinates with coordsSource.
src/entities/language/LanguageTypes.ts	Adds coordsSource?: LanguageSource to LanguageData.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.