fix: don't show 'All healthy' when patrol run had errors

When a patrol run encounters errors (e.g., LLM call failed), don't
display 'All healthy' in the summary as that's misleading - the
analysis didn't complete properly.

Now shows 'Analysis incomplete (N errors)' instead, which correctly
explains why the status badge shows red/error.

internal/ai/patrol.go

@@ -841,6 +841,10 @@ func (p *PatrolService) runPatrol(ctx context.Context) {
 	}
 	if runStats.errors > 0 {
 		status = "error"
+		// Don't claim "All healthy" if there were errors - the patrol didn't complete properly
+		if findingsSummaryStr == "All healthy" {
+			findingsSummaryStr = fmt.Sprintf("Analysis incomplete (%d errors)", runStats.errors)
+		}
 	}
 
 	// Create run record