Fix AI insights data calculations

- Change mood scale from 0-4 to 1-5 for human-readable averages
  (Horrible=1, Bad=2, Average=3, Good=4, Great=5)
- Fix streak calculation to check consecutive calendar days,
  not just consecutive entries in array
- Update prompt to show /5 scale instead of /4

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Services/MoodDataSummarizer.swift

@@ -116,7 +116,8 @@ class MoodDataSummarizer {
         for entry in entries {
             let moodName = entry.mood.widgetDisplayName.lowercased()
             counts[moodName, default: 0] += 1
-            totalScore += Int(entry.moodValue)
+            // Use 1-5 scale (add 1 to raw 0-4 values) for human-readable averages
+            totalScore += Int(entry.moodValue) + 1
         }
 
         var percentages: [String: Int] = [:]
@@ -138,14 +139,15 @@ class MoodDataSummarizer {
         for entry in entries {
             let weekday = Int(entry.weekDay)
             let current = weekdayTotals[weekday, default: (0, 0)]
-            weekdayTotals[weekday] = (current.total + Int(entry.moodValue), current.count + 1)
+            // Use 1-5 scale (add 1 to raw 0-4 values)
+            weekdayTotals[weekday] = (current.total + Int(entry.moodValue) + 1, current.count + 1)
         }
 
         var weekdayAverages: [String: Double] = [:]
         var bestDay = "Monday"
         var worstDay = "Monday"
         var bestAvg = -1.0
-        var worstAvg = 5.0
+        var worstAvg = 6.0
 
         for (weekday, data) in weekdayTotals {
             let avg = Double(data.total) / Double(data.count)
@@ -162,12 +164,12 @@ class MoodDataSummarizer {
             }
         }
 
-        // Weekend vs weekday
+        // Weekend vs weekday (use 1-5 scale)
         let weekendEntries = entries.filter { [1, 7].contains(Int($0.weekDay)) }
         let weekdayEntries = entries.filter { ![1, 7].contains(Int($0.weekDay)) }
 
-        let weekendAvg = weekendEntries.isEmpty ? 0 : Double(weekendEntries.reduce(0) { $0 + Int($1.moodValue) }) / Double(weekendEntries.count)
-        let weekdayAvg = weekdayEntries.isEmpty ? 0 : Double(weekdayEntries.reduce(0) { $0 + Int($1.moodValue) }) / Double(weekdayEntries.count)
+        let weekendAvg = weekendEntries.isEmpty ? 0 : Double(weekendEntries.reduce(0) { $0 + Int($1.moodValue) + 1 }) / Double(weekendEntries.count)
+        let weekdayAvg = weekdayEntries.isEmpty ? 0 : Double(weekdayEntries.reduce(0) { $0 + Int($1.moodValue) + 1 }) / Double(weekdayEntries.count)
 
         return (weekdayAverages, weekendAvg, weekdayAvg, bestDay, worstDay)
     }
@@ -183,8 +185,9 @@ class MoodDataSummarizer {
         let firstHalf = Array(entries.prefix(halfCount))
         let secondHalf = Array(entries.suffix(halfCount))
 
-        let firstAvg = Double(firstHalf.reduce(0) { $0 + Int($1.moodValue) }) / Double(firstHalf.count)
-        let secondAvg = Double(secondHalf.reduce(0) { $0 + Int($1.moodValue) }) / Double(secondHalf.count)
+        // Use 1-5 scale
+        let firstAvg = Double(firstHalf.reduce(0) { $0 + Int($1.moodValue) + 1 }) / Double(firstHalf.count)
+        let secondAvg = Double(secondHalf.reduce(0) { $0 + Int($1.moodValue) + 1 }) / Double(secondHalf.count)
 
         let diff = secondAvg - firstAvg
 
@@ -252,16 +255,39 @@ class MoodDataSummarizer {
     }
 
     private func calculateMoodStreak(entries: [MoodEntryModel], moods: [Mood]) -> Int {
+        guard !entries.isEmpty else { return 0 }
+
+        // Sort by date to ensure proper ordering
+        let sortedEntries = entries.sorted { $0.forDate < $1.forDate }
+
         var longest = 0
         var current = 0
+        var previousDate: Date?
+
+        for entry in sortedEntries {
+            let entryDate = calendar.startOfDay(for: entry.forDate)
+
+            // Check if this is a consecutive calendar day from the previous entry
+            let isConsecutive: Bool
+            if let prevDate = previousDate {
+                let dayDiff = calendar.dateComponents([.day], from: prevDate, to: entryDate).day ?? 0
+                isConsecutive = dayDiff == 1
+            } else {
+                isConsecutive = true // First entry starts a potential streak
+            }
 
-        for entry in entries {
             if moods.contains(entry.mood) {
-                current += 1
+                if isConsecutive || previousDate == nil {
+                    current += 1
+                } else {
+                    current = 1 // Reset to 1 (this entry starts new streak)
+                }
                 longest = max(longest, current)
             } else {
                 current = 0
             }
+
+            previousDate = entryDate
         }
 
         return longest
@@ -297,7 +323,8 @@ class MoodDataSummarizer {
             return (0, [])
         }
 
-        let average = Double(recentEntries.reduce(0) { $0 + Int($1.moodValue) }) / Double(recentEntries.count)
+        // Use 1-5 scale
+        let average = Double(recentEntries.reduce(0) { $0 + Int($1.moodValue) + 1 }) / Double(recentEntries.count)
         let moods = recentEntries.map { $0.mood.widgetDisplayName }
 
         return (average, moods)
@@ -363,7 +390,7 @@ class MoodDataSummarizer {
         // Compact format to stay under token limit
         var lines: [String] = []
 
-        lines.append("Period: \(summary.periodName), \(summary.totalEntries) entries, avg \(String(format: "%.1f", summary.averageMoodScore))/4")
+        lines.append("Period: \(summary.periodName), \(summary.totalEntries) entries, avg \(String(format: "%.1f", summary.averageMoodScore))/5")
 
         // Mood distribution - compact
         let moodDist = summary.moodPercentages.sorted { $0.key < $1.key }