fix(ui): navigate to tab for insights with entity_id=0

Insights with a valid tab but entity_id=0 (group-level observations)
were incorrectly marked InfoOnly, showing "house data, not in any tab"
on Enter. Now they navigate to the tab without selecting a specific row.
InfoOnly is reserved for insights with truly unrecognized tab names.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cpcloud

internal/app/dashboard.go

@@ -1099,9 +1099,6 @@ func (m *Model) dashInsightsRows() []dashRow {
 				ID:      item.EntityID,
 				Section: dashSectionInsights,
 			}
-			if item.EntityID == 0 {
-				target.InfoOnly = true
-			}
 		}
 		rows = append(rows, dashRow{
 			Cells: []dashCell{

internal/app/dashboard_test.go

@@ -1297,8 +1297,9 @@ func TestInsightsRows_WithItems(t *testing.T) {
 	assert.Equal(t, tabAppliances, rows[0].Target.Tab)
 	assert.Equal(t, uint(5), rows[0].Target.ID)
 	assert.False(t, rows[0].Target.InfoOnly)
-	// EntityID 0 should be InfoOnly (no specific entity to jump to).
-	assert.True(t, rows[1].Target.InfoOnly)
+	// EntityID 0 with a valid tab should still navigate to the tab.
+	assert.Equal(t, tabMaintenance, rows[1].Target.Tab)
+	assert.False(t, rows[1].Target.InfoOnly)
 }
 
 func TestInsightsSection_AppearsAfterResultMsg(t *testing.T) {