feat: remove itemDB initialization and related flush calls for streamlined inventory management

inventoryManager.lua

@@ -52,8 +52,6 @@ end
 
 local log    = dofile(_path("lib/log.lua"))
 local ui     = dofile(_path("lib/ui.lua"))
-local itemDB = dofile(_path("lib/itemDB.lua"))
-itemDB.init(_configPath(".item_names.db"))
 
 -------------------------------------------------
 -- Load modules (factory pattern → shared context)
@@ -85,7 +83,6 @@ ctx.display = display
 local craftEngine = dofile(_path("lib/craft.lua"))
 craftEngine.init(cfg.recipeBook, ops.getItemTotal)
 ctx.craftEngine = craftEngine
-ctx.itemDB = itemDB
 
 -- Convenience aliases
 local cache    = state.cache
@@ -390,7 +387,6 @@ local function main()
                 sleep(cfg.SCAN_INTERVAL)
                 pcall(ops.refreshCache)
                 pcall(ops.checkAlerts)
-                pcall(function() itemDB.flush() end)
                 pcall(function() cfg.recipeBook.flush() end)
                 state.needsRedraw = true
                 state.smelterNeedsRedraw = true