…verwrite existing GPS with null when the incoming frame had 0,0 coordinates.

Now it also preserves prior coordinates when the incoming update omits location.

This adds Giphy page URLs and `media.giphy.com` URLs (with and without
protocols) as *accepted* encodings for GIF messages, alongside the `g:`
syntax.

When someone posts such a URL by itself as a message, it will be rendered inline just like `g:` messages are now.

This does not change the encoding that GIF messages are *sent* in; that
is still the `g:` syntax.

Support receiving more formats of GIF message

Add LowMesh prefix and explain how to add more

Preserve Coordinates with contact.copyWith() function

Add additional device name prefixes to MeshCoreUuids

init contributing.md

* Refactor contact filtering and improve localization strings; enhance path trace handling

* Add localization for new CLI commands and update existing strings

* Enhance contact handling and UI updates across multiple screens
add unfiltered contact access and improve last seen resolution

* Add polling interval configuration and improve contact handling

* Reorder command constants for better organization and clarity

* Refactor contact handling by removing unnecessary mapping and improving clarity across multiple screens

* Moved RadioStatsIconButton in chat screen for improved UI consistency

* Added indicators to AppBar for channels

* Ignore contacts with self public key in contact handling

* Simplify path removal logic and clean up unused imports in path management dialog

* Enhance path hop resolution by adding distance checks to improve candidate selection accuracy

* Remove unnecessary reset of radio stats poll reference count in polling interval setter

* Refactor contact filtering and improve localization strings; enhance path trace handling

* Add localization for new CLI commands and update existing strings

* Enhance contact handling and UI updates across multiple screens
add unfiltered contact access and improve last seen resolution

* Add polling interval configuration and improve contact handling

* Reorder command constants for better organization and clarity

* Refactor contact handling by removing unnecessary mapping and improving clarity across multiple screens

* Moved RadioStatsIconButton in chat screen for improved UI consistency

* Added indicators to AppBar for channels

* Ignore contacts with self public key in contact handling

* Simplify path removal logic and clean up unused imports in path management dialog

* Enhance path hop resolution by adding distance checks to improve candidate selection accuracy

* Remove unnecessary reset of radio stats poll reference count in polling interval setter

linux and windows were missing jni which was being added on fresh builds from dev

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

…tion anywhere else anymore.

This reverts commit 758619b.

…gate debug logging

- Replace floating-point epsilon frequency comparison with integer Hz
- Add frequencyHz getter and fromMeshCoreSnapshot/toMeshCoreSnapshot
  conversion methods on _RadioSettingsSnapshot
- Move _toUiCodingRate/_toDeviceCodingRate to documented top-level functions
- Gate _logRadioSettingsState behind kDebugMode
- Use integer Hz in == and hashCode for _RadioSettingsSnapshot

Addresses code review findings on preset/off-grid repeat toggle PR.