fix

apps/api/internal/processing/formula_prompt.go

@@ -47,6 +47,46 @@ func AppendFormulaConstraints(userTpl string, titleTemplate, descriptionTemplate
 	return userTpl + "\n\n" + joined.String()
 }
 
+// FormatTitleSectionConstraint turns free-form --- Title --- section instructions
+// into a required enhance constraint when no structured title_template elements exist.
+func FormatTitleSectionConstraint(categoryPrompt string) string {
+	body := strings.TrimSpace(aiprompts.TitleSectionInstructions(categoryPrompt))
+	if body == "" || isBuiltInTitleRoleBoilerplate(body) {
+		return ""
+	}
+	var b strings.Builder
+	b.WriteString("Title instructions (REQUIRED — overrides any shorter \"short retail title\" rule):\n")
+	b.WriteString(body)
+	b.WriteString("\nBuild JSON \"name\" exactly per these instructions in {{language}}.")
+	b.WriteString(" Never copy the supplier Name unchanged when instructions ask for a new name or formula.")
+	return b.String()
+}
+
+func isBuiltInTitleRoleBoilerplate(body string) bool {
+	lower := strings.ToLower(strings.TrimSpace(body))
+	return strings.HasPrefix(lower, "role: title")
+}
+
+// AppendTitleSectionConstraint appends FormatTitleSectionConstraint when the
+// category Title role has text and structured title_template is empty/unusable.
+func AppendTitleSectionConstraint(userTpl, categoryPrompt string, titleTemplate any) string {
+	if FormatTitleFormulaConstraint(titleTemplate) != "" {
+		return strings.TrimSpace(userTpl)
+	}
+	block := FormatTitleSectionConstraint(categoryPrompt)
+	if block == "" {
+		return strings.TrimSpace(userTpl)
+	}
+	userTpl = strings.TrimSpace(userTpl)
+	if strings.Contains(userTpl, "Title instructions (REQUIRED") {
+		return userTpl
+	}
+	if userTpl == "" {
+		return block
+	}
+	return userTpl + "\n\n" + block
+}
+
 // MaxAttrAllowlistPromptKeys caps Allowed attribute keys listed in enhance prompts.
 const MaxAttrAllowlistPromptKeys = 40