feat(shelly): add intelligent mold-risk check based on Sedlbauer LIM I curve and document in AGENTS.md

terraform_shelly/variables.tf

@@ -49,3 +49,27 @@ variable "lost_connection" {
   description = "Time in seconds after which data is considered stale, causing the fan to turn off for safety"
   default     = 600
 }
+
+variable "critical_humi_base" {
+  type        = number
+  description = "Critical indoor relative humidity [%] at reference temperature (for mold warning curve)"
+  default     = 80
+}
+
+variable "critical_humi_temp_coeff" {
+  type        = number
+  description = "Temperature coefficient [%/°C] for the mold warning curve"
+  default     = 0.5
+}
+
+variable "critical_humi_ref_temp" {
+  type        = number
+  description = "Reference temperature [°C] for the mold warning curve"
+  default     = 10
+}
+
+variable "critical_humi_buffer" {
+  type        = number
+  description = "Safety buffer [%] subtracted from the critical relative humidity threshold"
+  default     = 15
+}