Remove dead climate region code from suggestion engine

Suggestion engine now purely uses home profile features (heating,
cooling, pool, etc.) for template matching. Climate region field
and matching block removed — ZIP code is no longer collected.

internal/services/suggestion_service.go

@@ -42,7 +42,6 @@ type templateConditions struct {
 	HasGarage       *bool   `json:"has_garage,omitempty"`
 	HasBasement     *bool   `json:"has_basement,omitempty"`
 	HasAttic        *bool   `json:"has_attic,omitempty"`
-	ClimateRegion   *string `json:"climate_region,omitempty"`
 	PropertyType    *string `json:"property_type,omitempty"`
 }
 
@@ -52,7 +51,7 @@ func (c *templateConditions) isEmpty() bool {
 		c.RoofType == nil && c.ExteriorType == nil && c.FlooringPrimary == nil &&
 		c.LandscapingType == nil && c.HasPool == nil && c.HasSprinkler == nil &&
 		c.HasSeptic == nil && c.HasFireplace == nil && c.HasGarage == nil &&
-		c.HasBasement == nil && c.HasAttic == nil && c.ClimateRegion == nil &&
+		c.HasBasement == nil && c.HasAttic == nil &&
 		c.PropertyType == nil
 }
 
@@ -61,7 +60,7 @@ const (
 	baseUniversalScore    = 0.3
 	stringMatchBonus      = 0.25
 	boolMatchBonus        = 0.3
-	climateRegionBonus    = 0.2
+	// climateRegionBonus removed — suggestions now based on home features only
 	propertyTypeBonus     = 0.15
 	totalProfileFields    = 14
 )
@@ -300,15 +299,6 @@ func (s *SuggestionService) scoreTemplate(tmpl *models.TaskTemplate, residence *
 		}
 	}
 
-	// Climate region match - compare condition against template's associated regions
-	// (residence climate region is determined by ZIP code; template regions are preloaded)
-	if cond.ClimateRegion != nil {
-		conditionCount++
-		// Match if any of the template's regions matches the condition
-		// In practice, the residence's climate region would be looked up from ZIP,
-		// but since templates already carry their regions, we score based on region presence
-	}
-
 	// Property type match
 	if cond.PropertyType != nil {
 		conditionCount++