chore(conductor): Add new track 'extract_viewmodels_20260316' for ViewModel extraction

conductor/tracks.md

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 # Project Tracks
 
 This file tracks all major tracks for the project. Each track has its own detailed plan in its respective folder.
+
+---
+
+- [ ] **Track: Extract remaining 5 App-Only ViewModels (AndroidSettingsViewModel, AndroidRadioConfigViewModel, AndroidDebugViewModel, AndroidMetricsViewModel, UIViewModel) to shared KMP feature/core modules by isolating Android-specific dependencies (Uri, Location, Locale) behind abstractions.**
+*Link: [./tracks/extract_viewmodels_20260316/](./tracks/extract_viewmodels_20260316/)*

conductor/tracks/extract_viewmodels_20260316/index.md

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+# Track extract_viewmodels_20260316 Context
+
+- [Specification](./spec.md)
+- [Implementation Plan](./plan.md)
+- [Metadata](./metadata.json)

conductor/tracks/extract_viewmodels_20260316/metadata.json

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+{
+  "track_id": "extract_viewmodels_20260316",
+  "type": "refactor",
+  "status": "new",
+  "created_at": "2026-03-16T12:00:00Z",
+  "updated_at": "2026-03-16T12:00:00Z",
+  "description": "Extract remaining 5 App-Only ViewModels (AndroidSettingsViewModel, AndroidRadioConfigViewModel, AndroidDebugViewModel, AndroidMetricsViewModel, UIViewModel) to shared KMP feature/core modules by isolating Android-specific dependencies (Uri, Location, Locale) behind abstractions."
+}

conductor/tracks/extract_viewmodels_20260316/plan.md

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+# Implementation Plan: Extract Remaining App-Only ViewModels
+
+## Phase 1: Infrastructure & Abstractions
+- [ ] Task: Implement `MeshtasticUri` (expect/actual wrapper for `android.net.Uri`) in `core:common`.
+- [ ] Task: Define `FileService` and `LocationService` interfaces in `core:repository/commonMain`.
+- [ ] Task: Create Android implementations for these services in `core:service/androidMain`.
+- [ ] Task: Conductor - User Manual Verification 'Phase 1: Infrastructure & Abstractions' (Protocol in workflow.md)
+
+## Phase 2: Feature Module Extractions (Settings & Node)
+- [ ] Task: Extract `AndroidSettingsViewModel` & `AndroidRadioConfigViewModel` to `feature:settings/commonMain`.
+- [ ] Task: Extract `AndroidMetricsViewModel` to `feature:node/commonMain`.
+- [ ] Task: Extract `AndroidDebugViewModel` to `feature:settings/commonMain`.
+- [ ] Task: Update Koin modules in `feature:settings` and `feature:node` to wire the new shared ViewModels.
+- [ ] Task: Conductor - User Manual Verification 'Phase 2: Feature Module Extractions' (Protocol in workflow.md)
+
+## Phase 3: Core UI & Cleanup
+- [ ] Task: Extract `UIViewModel` logic to `core:ui/commonMain`.
+- [ ] Task: Verify the `app` module thinning progress and finalize any remaining DI cleanup in `AppKoinModule`.
+- [ ] Task: Ensure all new shared ViewModels have baseline `commonTest` coverage using `core:testing` fakes.
+- [ ] Task: Conductor - User Manual Verification 'Phase 3: Core UI & Cleanup' (Protocol in workflow.md)

conductor/tracks/extract_viewmodels_20260316/spec.md

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+# Specification: Extract Remaining App-Only ViewModels
+
+## Overview
+This track aims to migrate the final 5 ViewModels currently trapped in the `app` module to their respective KMP `feature:*` or `core:*` modules. These ViewModels contain business logic that should be shared across platforms, but are currently coupled to Android-specific APIs.
+
+## Functional Requirements
+- **Isolate Dependencies:** Identify and abstract Android-specific APIs using a hybrid approach (expect/actual for low-level types and injected interfaces for services).
+- **Relocate ViewModels:** Move the core logic of these ViewModels to `commonMain` in the target modules:
+    - `SettingsViewModel` & `RadioConfigViewModel` -> `feature:settings`
+    - `DebugViewModel` -> `feature:settings`
+    - `MetricsViewModel` -> `feature:node`
+    - `UIViewModel` logic -> `core:ui`
+- **Dependency Injection:** Update Koin modules to provide platform-specific implementations of the abstracted interfaces.
+- **Maintain Parity:** Ensure existing functionality is preserved on Android while enabling these features on Desktop.
+
+## Acceptance Criteria
+- All 5 ViewModels are extracted from the `app` module and logic resides in `commonMain`.
+- `commonTest` coverage is established for the shared logic in each respective module.
+- The `app` module file count is further reduced.
+- Desktop target can instantiate and use the shared ViewModels.