Remove documentation file and refactor to use Settings methods instead of exposing prefs

Co-authored-by: jonasbark <1151304+jonasbark@users.noreply.github.com>

CUSTOM_PROFILES_FEATURE.md

@@ -1,84 +0,0 @@
-# Custom Profiles Feature
-
-## Overview
-This feature allows users to create and manage multiple custom keymap profiles for different activity types (e.g., Workout, Race, Event, Workout with Coach).
-
-## Changes Made
-
-### 1. CustomApp Class (`lib/utils/keymap/apps/custom_app.dart`)
-- Added `profileName` field to support named profiles
-- Each CustomApp instance can now have a unique name
-- Constructor now accepts an optional `profileName` parameter (defaults to 'Custom')
-
-### 2. Settings Class (`lib/utils/settings/settings.dart`)
-- Modified storage mechanism to support multiple custom profiles
-  - Old format: `customapp` → single profile
-  - New format: `customapp_<profileName>` → multiple profiles
-- Added `getCustomAppProfiles()` to retrieve all saved custom profiles
-- Added `duplicateCustomAppProfile()` to copy profiles
-- Added `deleteCustomAppProfile()` to remove profiles
-- Implemented backward compatibility migration from old `customapp` key to new `customapp_Custom` key
-- Exposed `prefs` getter for UI access
-
-### 3. Device Page UI (`lib/pages/device.dart`)
-- Added `_getAllApps()` method to dynamically build app list including all custom profiles
-- Added "New Custom Profile" button to create new profiles
-- Added "Manage Profile" button (visible when a CustomApp is selected) with options to:
-  - Rename profile
-  - Duplicate profile
-  - Delete profile
-- Updated dropdown menu to use dynamic app list
-
-### 4. Dialog Helpers
-Added several dialog methods to handle user interactions:
-- `_showNewProfileDialog()` - Create new profile
-- `_showManageProfileDialog()` - Select management action
-- `_showRenameProfileDialog()` - Rename existing profile
-- `_showDuplicateProfileDialog()` - Duplicate existing profile
-- `_showDeleteConfirmDialog()` - Confirm deletion
-
-## User Experience
-
-### Creating a New Profile
-1. Click "New Custom Profile" button
-2. Enter a name (e.g., "Workout", "Race", "Event")
-3. Customize the keymap using the "Customize Keymap" button
-4. The profile is automatically saved
-
-### Switching Between Profiles
-- Use the dropdown menu to select any saved custom profile
-- All predefined keymaps (MyWhoosh, TrainingPeaks, Biketerra) remain available
-
-### Managing Profiles
-1. Select a custom profile from the dropdown
-2. Click "Manage Profile" button
-3. Choose an action:
-   - **Rename**: Change the profile name
-   - **Duplicate**: Create a copy with a new name
-   - **Delete**: Remove the profile (with confirmation)
-
-## Backward Compatibility
-- Existing users with a single custom keymap will have it automatically migrated to the new format as "Custom"
-- No data loss during migration
-- Old `customapp` key is removed after successful migration
-
-## Testing
-Comprehensive test suite added in `test/custom_profile_test.dart` covering:
-- Profile creation with default and custom names
-- Saving and retrieving profiles
-- Listing multiple profiles
-- Duplicating profiles
-- Deleting profiles
-- Migration from old format
-- Prevention of duplicate migrations
-
-## Storage Format
-- **Profile keymaps**: `customapp_<profileName>` → List<String>
-- **Current app**: `app` → String (profile name)
-- Example:
-  ```
-  customapp_Workout: [...keymap data...]
-  customapp_Race: [...keymap data...]
-  customapp_Event: [...keymap data...]
-  app: "Race"
-  ```

lib/pages/device.dart

@@ -33,7 +33,7 @@ class _DevicePageState extends State<DevicePage> {
     final customProfiles = settings.getCustomAppProfiles();
     final customApps = customProfiles.map((profile) {
       final customApp = CustomApp(profileName: profile);
-      final savedKeymap = settings.prefs.getStringList('customapp_$profile');
+      final savedKeymap = settings.getCustomAppKeymap(profile);
       if (savedKeymap != null) {
         customApp.decodeKeymap(savedKeymap);
       }
@@ -225,7 +225,7 @@ ${it.firmwareVersion != null ? ' - Firmware Version: ${it.firmwareVersion}' : ''
                                           await settings.duplicateCustomAppProfile(currentProfile, newName);
                                           await settings.deleteCustomAppProfile(currentProfile);
                                           final customApp = CustomApp(profileName: newName);
-                                          final savedKeymap = settings.prefs.getStringList('customapp_$newName');
+                                          final savedKeymap = settings.getCustomAppKeymap(newName);
                                           if (savedKeymap != null) {
                                             customApp.decodeKeymap(savedKeymap);
                                           }
@@ -239,7 +239,7 @@ ${it.firmwareVersion != null ? ' - Firmware Version: ${it.firmwareVersion}' : ''
                                         if (newName != null && newName.isNotEmpty) {
                                           await settings.duplicateCustomAppProfile(currentProfile, newName);
                                           final customApp = CustomApp(profileName: newName);
-                                          final savedKeymap = settings.prefs.getStringList('customapp_$newName');
+                                          final savedKeymap = settings.getCustomAppKeymap(newName);
                                           if (savedKeymap != null) {
                                             customApp.decodeKeymap(savedKeymap);
                                           }

lib/utils/settings/settings.dart

@@ -7,8 +7,6 @@ import '../keymap/apps/custom_app.dart';
 
 class Settings {
   late final SharedPreferences _prefs;
-  
-  SharedPreferences get prefs => _prefs;
 
   Future<void> init() async {
     _prefs = await SharedPreferences.getInstance();
@@ -65,6 +63,10 @@ class Settings {
     return keys.map((key) => key.replaceFirst('customapp_', '')).toList();
   }
   
+  List<String>? getCustomAppKeymap(String profileName) {
+    return _prefs.getStringList('customapp_$profileName');
+  }
+  
   Future<void> deleteCustomAppProfile(String profileName) async {
     await _prefs.remove('customapp_$profileName');
     // If the current app is the one being deleted, reset