Fix craft dispatch: add turtle attach/detach handlers, re-scan on craft, log failures

- Add peripheral_attach handler to auto-detect crafting turtle connecting after boot
- Update peripheral_detach handler to clear craftTurtleName when turtle disconnects
- Re-scan peripherals for turtle in display.lua craft handler if none known
- Add log.warn when craft turtle check fails (was silent notification only)
- Sync ctx.craftTurtleOk from broadcastState so display.lua has current value

manager/display.lua

@@ -1141,10 +1141,22 @@ local function buildSmelterPage()
                     local recipeIdx = event.selected.idx
                     local recipe = cfg.CRAFTABLE[recipeIdx]
                     if recipe then
+                        -- Re-scan for turtle if none known
+                        if not ctx.craftTurtleName then
+                            for _, pName in ipairs(peripheral.getNames()) do
+                                if pName:match("^turtle_") then
+                                    ctx.craftTurtleName = pName
+                                    log.info("CRAFT", "Turtle found on re-scan: %s", pName)
+                                    break
+                                end
+                            end
+                        end
                         local turtleOk = ctx.craftTurtleOk
                             or (ctx.craftTurtleName
                                 and peripheral.isPresent(ctx.craftTurtleName))
                         if not turtleOk then
+                            log.warn("CRAFT", "No crafting turtle! (name=%s)",
+                                tostring(ctx.craftTurtleName))
                             self.notification:error("No crafting turtle!")
                             return true
                         end