Strategic Improvement

Pipeline vitals shows current health score but we don't track trends or intervene proactively. Build a trend analyzer that detects degrading health (2+ consecutive drops) and triggers diagnostic patrols BEFORE the next build fails. Current alerting (#634) is reactive; this makes the system proactive and self-healing.

Acceptance Criteria

• Store per-repo health scores in SQLite with timestamps (extend sw-db.sh schema)
• Trend detection: flag repos with 2+ consecutive health drops or sudden >20% degradation
• Auto-intervention triggers: degrading health → run diagnostic patrol → inject findings into next build loop context
• Dashboard widget showing 7-day health trend sparkline per repo with up/down/stable indicators
• shipwright health trends command showing repos sorted by trend direction (most degraded first)
• Integration with daemon: before spawning build loop, check trend and boost effort level if degrading

Context

• Priority: P0
• Complexity: standard
• Generated by: Strategic Intelligence Agent
• Strategy alignment: P0: Reliability & Success Rate + P4: Observability