Implement BetterFit iOS strength training coach core framework

.github/workflows/build.yml

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+name: Build
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+concurrency:
+  group: build-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  swiftpm:
+    name: SwiftPM (build + test)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+
+      - name: Setup mise
+        uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+
+      - name: Build
+        run: mise run build
+
+      - name: Test
+        run: mise run test
+
+  ios:
+    name: iOS (xcodebuild)
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+
+      - name: Setup mise
+        uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
+
+      - name: Install xcodegen
+        run: brew install xcodegen
+
+      - name: Build (Dev scheme)
+        run: mise run ios:build:dev
+
+      - name: Build (Prod scheme)
+        if: github.ref == 'refs/heads/main'
+        run: mise run ios:build:prod

.github/workflows/release.yml

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+name: Release Please
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  draft:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38 # v4
+        with:
+          token: ${{ github.token }}
+          release-type: node

.gitignore

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+# Swift Package Manager
+.build/
+*.swiftpm
+.swiftpm/
+
+# Xcode
+xcuserdata/
+*.xcodeproj
+*.xcworkspace
+!*.xcworkspace/contents.xcworkspacedata
+/*.gcno
+*~.nib
+DerivedData/
+
+# Build artifacts
+*.o
+*.a
+*.dylib
+*.framework
+*.app
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Temporary files
+*.swp
+*.swo
+*~
+.tmp/
+tmp/

.vscode/settings.json

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+{
+    "github.copilot.chat.commitMessageGeneration.instructions": [
+        {
+            "text": "Use conventional commit format: type(scope): description."
+        }
+    ]
+}

Apps/iOS/BetterFitApp/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+    "images": [
+        {
+            "idiom": "iphone",
+            "size": "20x20",
+            "scale": "2x",
+            "filename": "AppIcon-40.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "20x20",
+            "scale": "3x",
+            "filename": "AppIcon-60.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "29x29",
+            "scale": "2x",
+            "filename": "AppIcon-58.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "29x29",
+            "scale": "3x",
+            "filename": "AppIcon-87.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "40x40",
+            "scale": "2x",
+            "filename": "AppIcon-80.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "40x40",
+            "scale": "3x",
+            "filename": "AppIcon-120.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "60x60",
+            "scale": "2x",
+            "filename": "AppIcon-120.png"
+        },
+        {
+            "idiom": "iphone",
+            "size": "60x60",
+            "scale": "3x",
+            "filename": "AppIcon-180.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "20x20",
+            "scale": "1x",
+            "filename": "AppIcon-20.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "20x20",
+            "scale": "2x",
+            "filename": "AppIcon-40.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "29x29",
+            "scale": "1x",
+            "filename": "AppIcon-29.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "29x29",
+            "scale": "2x",
+            "filename": "AppIcon-58.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "40x40",
+            "scale": "1x",
+            "filename": "AppIcon-40.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "40x40",
+            "scale": "2x",
+            "filename": "AppIcon-80.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "76x76",
+            "scale": "1x",
+            "filename": "AppIcon-76.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "76x76",
+            "scale": "2x",
+            "filename": "AppIcon-152.png"
+        },
+        {
+            "idiom": "ipad",
+            "size": "83.5x83.5",
+            "scale": "2x",
+            "filename": "AppIcon-167.png"
+        },
+        {
+            "idiom": "ios-marketing",
+            "size": "1024x1024",
+            "scale": "1x",
+            "filename": "AppIcon-1024.png"
+        }
+    ],
+    "info": {
+        "author": "xcode",
+        "version": 1
+    }
+}

Apps/iOS/BetterFitApp/Assets.xcassets/Contents.json

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+{
+    "info": {
+        "author": "xcode",
+        "version": 1
+    }
+}

Apps/iOS/BetterFitApp/BetterFitApp.swift

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+import BetterFit
+import SwiftUI
+
+@main
+struct BetterFitApp: App {
+    let betterFit = BetterFit()
+
+    var body: some Scene {
+        WindowGroup {
+            ContentView(betterFit: betterFit)
+        }
+    }
+}

Apps/iOS/BetterFitApp/ContentView.swift

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+import BetterFit
+import SwiftUI
+
+struct ContentView: View {
+    let betterFit: BetterFit
+
+    @State private var lastEvent: String = ""
+    @State private var recoveryPercent: Double = 0
+
+    var body: some View {
+        NavigationStack {
+            List {
+                Section("Status") {
+                    LabeledContent("Overall recovery") {
+                        Text("\(Int(recoveryPercent))%")
+                            .monospacedDigit()
+                    }
+
+                    if !lastEvent.isEmpty {
+                        LabeledContent("Last event") {
+                            Text(lastEvent)
+                        }
+                    }
+                }
+
+                Section("Quick actions") {
+                    Button("Simulate workout + update recovery") {
+                        simulateWorkout()
+                    }
+                }
+            }
+            .navigationTitle("BetterFit")
+        }
+        .onAppear {
+            refreshRecovery()
+        }
+    }
+
+    private func refreshRecovery() {
+        recoveryPercent = betterFit.bodyMapManager.getOverallRecoveryPercentage()
+    }
+
+    private func simulateWorkout() {
+        // Minimal "fake" workout flow just to prove the library runs in an app.
+        let benchPress = Exercise(
+            name: "Bench Press",
+            equipmentRequired: .barbell,
+            muscleGroups: [.chest, .triceps]
+        )
+
+        let workout = Workout(
+            name: "Quick Session",
+            exercises: [
+                WorkoutExercise(exercise: benchPress, sets: [ExerciseSet(reps: 8, weight: 60)])
+            ]
+        )
+
+        betterFit.startWorkout(workout)
+        betterFit.completeWorkout(workout)
+
+        lastEvent = "Completed workout"
+        refreshRecovery()
+    }
+}
+
+#Preview {
+    ContentView(betterFit: BetterFit())
+}

Apps/iOS/BetterFitApp/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>BetterFit Dev</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<true/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string></string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UILaunchScreen</key>
+	<dict/>
+</dict>
+</plist>