This commit continues the migration toward Kotlin Multiplatform (KMP) by moving BLE radio interfaces and top-level UI components to `commonMain`. This consolidation reduces platform-specific code and achieves better feature parity between Android and Desktop.

Key changes include:

- **Network & Transport:**
  - Moved `BleRadioInterface` to `core:network/commonMain`, leveraging Kable for multiplatform BLE support.
  - Introduced `BaseRadioTransportFactory` in `commonMain` to provide a unified factory for TCP, Serial, and BLE transports.
  - Updated documentation to reflect that BLE is now a shared KMP component.

- **UI & Architecture:**
  - Migrated top-level UI composition (`MeshtasticAppShell`) to `commonMain`, eliminating the need for `ui/Main.kt` in the app module.
  - Extracted shared logic and helpers (`handleNodeAction`, `findNodeByNameSuffix`, etc.) to `commonMain` to reduce code duplication across Android and Desktop.
  - Completed migration of node detail and message composables to `commonMain`.

- **Documentation & Maintenance:**
  - Updated `kmp-status.md`, `roadmap.md`, and module READMEs to reflect the current state of KMP integration, including MQTT and BLE parity.
  - Tracked progress on Desktop feature gaps, marking map integration and node detail migration as complete.

Specific changes:
- Updated `core:network` to include `BleRadioInterface` and `BaseRadioTransportFactory` in its exported components.
- Refactored `docs/roadmap.md` to show BLE support as "All (KMP)" instead of platform-specific.
- Updated `GEMINI.md` and `kmp-status.md` to include new shared helpers and unified app shell components.

Signed-off-by: James Rich <[email protected]>

This commit removes the legacy `BleRadioInterfaceFactory` and `BleRadioInterfaceSpec` from the `androidMain` source set. These components are being phased out in favor of a platform-agnostic Bluetooth implementation.

Specific changes include:
- Deleted `BleRadioInterfaceFactory.kt` and `BleRadioInterfaceSpec.kt`.
- Updated `InterfaceFactory` to remove the dependency on `BleRadioInterfaceSpec`.
- Removed `InterfaceId.BLUETOOTH` from the `specMap` within `InterfaceFactory`.

Signed-off-by: James Rich <[email protected]>

…mentations

This commit refactors `BaseRadioTransportFactory` and its platform-specific implementations (Android and Desktop) to improve code readability and maintainability. It transitions from imperative if-else chains to more idiomatic Kotlin `when` expressions and collection-based checks.

Specific changes include:
- **BaseRadioTransportFactory**:
    - Simplified `isAddressValid` logic by using a list of valid `InterfaceId` values and updating the prefix check for "!".
    - Refactored `createTransport` to use a `when` expression for identifying BLE and platform-specific transports.
- **AndroidRadioTransportFactory**: Updated KDoc to clarify the delegation pattern between KMP transports (BLE) and legacy Android-specific interfaces (USB/Serial, TCP, Mock).
- **DesktopRadioTransportFactory**:
    - Refactored `createPlatformTransport` to use a `when` expression for TCP and Serial transport creation.
    - Enhanced KDoc to describe the delegation of multiplatform vs. platform-specific (jSerialComm) transports.
- **Code Style**: Replaced `getOrNull(0)` with `firstOrNull()` and standardized prefix removal logic across transport creation.

Signed-off-by: James Rich <[email protected]>

This commit removes the `core:prefs` dependency from the `androidMain` source set in the `core:network` module to reduce unnecessary coupling.

Specific changes include:
- Removed `projects.core.prefs` from `androidMain` dependencies in `core/network/build.gradle.kts`.

Signed-off-by: James Rich <[email protected]>

This commit updates the documentation and visual dependency graphs across the project to align with recent Kotlin Multiplatform (KMP) refactoring. It introduces new styling for KMP libraries and streamlines the documentation for core testing utilities.

Specific changes include:
- **Build Logic & Graph Generation**:
    - Added `KmpLibraryCompose` to the `PluginType` configuration in `Graph.kt`.
    - Updated `ComposeDesktopApplication` identification logic.
    - Added "KMP Library" to the Mermaid legend generated for module READMEs.
- **Documentation Updates**:
    - Rewrote `core/testing/README.md` to be more concise, focusing on its role as a KMP library providing shared fakes, coroutine utilities, and Mokkery support.
    - Updated Mermaid diagrams in nearly all module `README.md` files to include the `kmp-library-compose` class definition.
- **Module Classification**:
    - Reclassified several modules (e.g., `core:nfc`, `core:navigation`, `core:resources`, `core:ui`) from `compose-desktop-application` to `kmp-library-compose` in their respective graph definitions.
    - Updated `core:barcode` classification to `android-library`.

Signed-off-by: James Rich <[email protected]>

Signed-off-by: James Rich <[email protected]>

Signed-off-by: James Rich <[email protected]>