Add AI-powered workout insights and suggestions

[apermo]

Summary

Enable proactive AI suggestions based on patterns in feedback and workout history.

Features

End-of-Workout Summary

After completing all exercises, show AI-generated insights:

• "Bankdrücken war 3x hintereinander 'zu leicht' - Gewicht erhöhen?"
• "Deine Kniebeuge-Leistung ist diese Woche gestiegen!"
• "Du hast diese Woche jeden Tag trainiert - Ruhetag einplanen?"

Proactive Suggestions

AI can surface suggestions without being asked:

• Progressive overload reminders
• Deload week suggestions
• Exercise variation recommendations
• Injury prevention alerts (repeated pain feedback)

Weekly Check-in

Optional weekly conversation prompt:

• "Wie lief die Woche?"
• AI summarizes progress
• Suggests adjustments for next week

Implementation

• Background analysis of feedback patterns
• Suggestion queue stored in database
• Show suggestions as cards in UI
• User can dismiss or act on suggestions

UI Integration

┌─────────────────────────────┐
│ 💡 Vorschlag                │
│                             │
│ Bankdrücken war 3x "leicht" │
│ Gewicht von 60 auf 65kg?    │
│                             │
│ [Ja, erhöhen]  [Ignorieren] │
└─────────────────────────────┘

Part of

Phase 5: Advanced Features