2 files changed, 0 insertions, 13 deletions
diff --git a/internal/validate/checks.go b/internal/validate/checks.go
index 7ac6fa1..527b558 100644
--- a/internal/validate/checks.go
+++ b/internal/validate/checks.go
@@ -1068,13 +1068,6 @@ func validateTechs(s Source) []Issue {
 				Message: fmt.Sprintf("Tech %q: has no name", def.ID),
 			})
 		}
-		if def.Category != "" && !knownTechCategories[def.Category] {
-			issues = append(issues, Issue{
-				Level:   "WARN",
-				Type:    "reference",
-				Message: fmt.Sprintf("Tech %q: unknown category %q", def.ID, def.Category),
-			})
-		}
 		if def.DrainRate < 0 {
 			issues = append(issues, Issue{
 				Level:   "ERROR",
diff --git a/internal/validate/validate.go b/internal/validate/validate.go
index 234651e..735c9ef 100644
--- a/internal/validate/validate.go
+++ b/internal/validate/validate.go
@@ -36,7 +36,6 @@ type CourseView struct {
 type TechView struct {
 	ID        string
 	Name      string
-	Category  string
 	DrainRate float64
 }
 
@@ -151,11 +150,6 @@ func LogIssues(issues []Issue) {
 	}
 }
 
-var knownTechCategories = map[string]bool{
-	"accuracy": true, "strength": true, "defense": true, "ranged": true,
-	"science": true, "protection": true, "utility": true, "combo": true,
-}
-
 // reservedTechIDs are tech IDs whose semantics are coupled to code logic and
 // must exist in YAML (damage protection mapping + death retribution).
 var reservedTechIDs = map[string]bool{