feat(mesh): RF-params settings UI + expose lora_radio_params in mesh.status

Device panel gets MeshCore RF fields (frequency MHz, bandwidth kHz, SF, CR)
wired to mesh.configure's validated lora_radio_params; shown only for
MeshCore radios, all-empty leaves the radio's flashed settings untouched.
Human units in the UI, firmware field units on the wire. Per operator
direction the panel's static stat rows duplicating editable fields (name,
region, channel) are dropped — the editable control is the display. Stale
'adjust via a MeshCore client' hints updated: the node programs the radio now.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/stores/mesh.ts

@@ -48,6 +48,9 @@ export interface MeshConfigureParams {
   receive_block_headers?: boolean
   lora_region?: string
   device_kind?: string
+  /** MeshCore LoRa PHY params in firmware field units (freq_khz = MHz×1000,
+   *  bw_hz = kHz×1000). null clears; omitted leaves unchanged. */
+  lora_radio_params?: { freq_khz: number; bw_hz: number; sf: number; cr: number } | null
 }
 
 export interface MeshPeer {