feat: add new crafting recipes for cobblestone and stone variants; enhance auto-crafting logic for excess items

inventoryManager.lua

@@ -445,11 +445,9 @@ local function main()
 
         -- Task 5c: Auto-craft excess items into target products
         function()
-            if #cfg.AUTO_CRAFT_RULES == 0 then
-                while true do sleep(3600) end
-            end
             sleep(12)  -- let initial scan + discard settle first
-            log.info("AUTOCRAFT", "Auto-craft active with %d rule(s)", #cfg.AUTO_CRAFT_RULES)
+            log.info("AUTOCRAFT", "Auto-craft active (%d explicit rule(s), smart=%s)",
+                #cfg.AUTO_CRAFT_RULES, tostring(cfg.AUTO_CRAFT_FROM_EXCESS))
             while true do
                 if ctx.craftTurtleName then
                     activity.autocrafting = true