Streak Tracker Generator

Generate a production streak tracking system that records consecutive days of user activity, calculates current and longest streaks, handles timezone-aware day boundaries, supports streak freeze/protection passes, and schedules streak-at-risk local notifications.

When This Skill Activates

Use this skill when the user:

• Asks to "add streaks" or "daily streak" tracking
• Wants "streak tracking" or "consecutive days" counting
• Mentions "engagement streaks" or "habit tracking"
• Asks about "streak freeze" or "streak protection"
• Wants "streak-at-risk" notifications or reminders
• Mentions "login streak" or "activity streak"

Pre-Generation Checks

1. Project Context Detection

• Check Swift version (requires Swift 5.9+)
• Check deployment target (iOS 17+ / macOS 14+ for @Observable and SwiftData)
• Check for SwiftData availability and existing model container setup
• Identify source file locations

2. Conflict Detection

Search for existing streak or habit tracking:

Glob: **/*Streak*.swift, **/*Habit*.swift, **/*DailyTrack*.swift
Grep: "streak" or "consecutiveDays" or "habitTrack" or "dailyStreak"

If existing streak/habit system found:

• Ask if user wants to replace or extend it
• If extending, generate only the missing components

3. Platform Detection

Determine if generating for iOS (UNUserNotificationCenter) or macOS (UNUserNotificationCenter available on macOS 11+) or both.

Configuration Questions

Ask user via AskUserQuestion:

1. Streak type?

   • Daily (consecutive calendar days) -- recommended
   • Weekly (at least one activity per calendar week)
   • Custom interval (every N hours/days)

2. Storage backend?

   • SwiftData (recommended for iOS 17+ / macOS 14+)
   • UserDefaults (lightweight, no model container needed)