added rps_trip_cause type

reactor-plc/plc.lua

@@ -41,7 +41,7 @@ function plc.rps_init(reactor)
         state = { false, false, false, false, false, false, false, false, false },
         reactor_enabled = false,
         tripped = false,
-        trip_cause = ""
+        trip_cause = "" ---@type rps_trip_cause
     }
 
     ---@class rps

scada-common/types.lua

@@ -71,6 +71,18 @@ types.TRI_FAIL = {
 ---| "websocket_message"
 ---| "websocket_success"
 
+---@alias rps_trip_cause
+---| "ok"
+---| "dmg_crit"
+---| "high_temp"
+---| "no_coolant"
+---| "full_waste"
+---| "heated_coolant_backup"
+---| "no_fuel"
+---| "fault"
+---| "timeout"
+---| "manual"
+
 ---@alias rtu_t string
 types.rtu_t = {
     redstone = "redstone",

supervisor/session/plc.lua

@@ -89,7 +89,7 @@ function plc.new_session(id, for_reactor, in_queue, out_queue)
             overridden = false,
             degraded = false,
             rps_tripped = false,
-            rps_trip_cause = "ok",
+            rps_trip_cause = "ok",  ---@type rps_trip_cause
             ---@class rps_status
             rps_status = {
                 dmg_crit = false,