Add session-scoped storage for FromRadio.region_presets, mirroring the
deviceUIConfig lifecycle:

- RadioConfigRepository: loraRegionPresetMapFlow + set/clear.
- MeshConfigHandler.handleRegionPresets -> repository setter.
- FromRadioPacketHandlerImpl: dispatch region_presets to the handler.
- MeshConfigFlowManagerImpl: clear the map at each handshake start.
- FakeRadioConfigRepository + FakeMeshConfigHandler: test-double parity.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

- core/model/RegionPresetConstraint.kt: pure helpers over LoRaRegionPresetMap —
  constraintFor(region) (null = unconstrained for absent map/region/OOB index),
  RegionPresetConstraint.isGated(isLicensed), and repairPresetFor() to snap an
  illegal preset to the region default. Unit-tested in LoRaRegionPresetsTest.
- Channel.kt: add the firmware-exact TinyFast/TinySlow names to the interop
  when() (verified against firmware DisplayFormatters::getModemPresetDisplayName).
- FromRadioPacketHandlerImplTest: assert region_presets dispatches to the handler.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

… re-read after swap

Consume the region->preset map in the LoRa config UI:
- RadioConfigViewModel exposes the decoded map + localIsLicensed (from the
  destination node User.is_licensed, which is reliably populated — unlike
  userConfig, which is empty on the LoRa screen).
- LoRaConfigItemList filters the preset dropdown to the region legal presets,
  snaps an illegal current preset to the region default on region change, and
  disables licensed-only presets (with an explanatory summary) unless the device
  is a licensed operator. Constraints apply to the local device only.
- DropDownItem gains a defaulted enabled flag so individual presets render
  greyed/non-selectable.
- R9: a local LoRa write applies live (no reboot) and may be region-swapped by
  the firmware, so the set ACK now triggers a LoRa re-read to reflect it.
- Falls back to the full unconstrained list when the map is absent (firmware < 2.8).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

…review auto-fix)

- constraintFor treats an empty-presets group as unconstrained (degrade to the
  full list rather than an empty picker), matching the null/absent/OOB cases.
- LoRaConfigItemList always keeps the current selection in the dropdown
  (disabled when illegal) so the field is never blank, and memoizes the item
  list. Drop the redundant use_preset guard already implied by the enclosing if.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

…nfig (review auto-fix)

Rename setLoRaRegionPresetMap/clearLoRaRegionPresetMap to
setLoraRegionPresetMap/clearLoraRegionPresetMap for casing parity with the
loraRegionPresetMapFlow property and the existing setLoraConfig convention.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

…ion (review auto-fix)

- Point the licensed-region summary at the real UI labels (Licensed amateur
  radio (Ham) in User Config) instead of invented ones.
- Add tests for the handshake clear of the region-preset map and the
  handleRegionPresets -> repository delegation.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

…place (review triage)

Revert the post-save LoRa re-read: it suppressed the normal save-success dialog
and auto-back for local LoRa saves. A firmware region swap (e.g. EU sibling) is
instead reflected when the LoRa screen is next opened, which already re-reads the
device config. Also stop applying the LoRa write optimistically so the form never
shows a requested-but-not-applied region. Local LoRa saves now behave like every
other config save.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Rebased onto main (takpacket-sdk 0.5.3 -> 0.7.0, plus compose/lifecycle/room/
detekt bumps). Verified takpacket-sdk 0.7.0 STILL transitively pins
protobufs:2.7.25, so removing the resolutionStrategy force downgrades the test
runtime classpath and breaks region_presets at runtime (84 NoSuchMethodError in
:core:data:allTests). Force retained; refreshed its note to reflect 0.7.0 / #5834.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

protobufs #959 switched RB snapshot publishing to immutable per-commit
vX.Y.Z-{shorthash}-SNAPSHOT coordinates. Retarget off the moving
develop-SNAPSHOT to the exact published snapshot containing #951.

The takpacket transitive protobufs:2.7.25 force stays: Gradle still ranks
2.7.25 > v2.7.26-…-SNAPSHOT (numeric "2" outranks the "v2" qualifier),
so the runtime classpath would downgrade without it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>