diff --git a/manager/operations.lua b/manager/operations.lua
index 3c81ed3..0b2f8c1 100644
--- a/manager/operations.lua
+++ b/manager/operations.lua
@@ -148,13 +148,39 @@ function O.refreshCache(onProgress)
     local totalSlots = 0
     local usedSlots = 0
 
-    for ci, chest in ipairs(chests) do
-        if onProgress then onProgress(ci, #chests, chest) end
-        local inv = O.wrapCached(chest)
-        if inv then
-            totalSlots = totalSlots + inv.size()
-            local contents = inv.list()
-            for slot, item in pairs(contents) do
+    -- Parallel inventory scanning (chunked)
+    local CHUNK = cfg.PARALLEL_SCAN_CHUNKS or 8
+    local scanData = {}
+    local scanFns = {}
+    for _, chest in ipairs(chests) do
+        table.insert(scanFns, function()
+            local inv = O.wrapCached(chest)
+            if inv then
+                scanData[chest] = {
+                    size     = inv.size(),
+                    contents = inv.list(),
+                }
+            end
+        end)
+    end
+
+    for i = 1, #scanFns, CHUNK do
+        local chunk = {}
+        local chunkEnd = math.min(i + CHUNK - 1, #scanFns)
+        for j = i, chunkEnd do
+            chunk[#chunk + 1] = scanFns[j]
+        end
+        if onProgress then
+            onProgress(chunkEnd, #chests, chests[chunkEnd] or "scanning...")
+        end
+        parallel.waitForAll(table.unpack(chunk))
+    end
+
+    for _, chest in ipairs(chests) do
+        local data = scanData[chest]
+        if data then
+            totalSlots = totalSlots + data.size
+            for slot, item in pairs(data.contents) do
                 usedSlots = usedSlots + 1
                 if not catalogue[item.name] then
                     catalogue[item.name] = {}
@@ -293,6 +319,22 @@ end
 -- Barrel auto-sort
 -------------------------------------------------
 
+--- Get chests sorted by priority (highest first).
+-- Falls back to name order if no priority is configured.
+function O.getChestsByPriority()
+    local chests = O.getChests()
+    local priority = cfg.CHEST_PRIORITY
+    if not priority or not next(priority) then return chests end
+    local sorted = { table.unpack(chests) }
+    table.sort(sorted, function(a, b)
+        local pa = priority[a] or 0
+        local pb = priority[b] or 0
+        if pa ~= pb then return pa > pb end
+        return a < b
+    end)
+    return sorted
+end
+
 function O.sortBarrel(barrelOverride)
     local barrelTarget = (barrelOverride and barrelOverride ~= "") and barrelOverride or cfg.BARREL_NAME
     local barrel = O.wrapCached(barrelTarget)
@@ -305,7 +347,7 @@ function O.sortBarrel(barrelOverride)
     state.needsRedraw = true
 
     local catalogue = cache.catalogue
-    local chests = O.getChests()
+    local chests = O.getChestsByPriority()
 
     for slot, item in pairs(contents) do
         local moved = 0
@@ -751,6 +793,63 @@ function O.checkAlerts()
     end
 end
 
+-------------------------------------------------
+-- Supply chest (builder / manifest-based stocking)
+-------------------------------------------------
+
+function O.supplyChest()
+    if cfg.SUPPLY_CHEST == "" or #cfg.SUPPLY_MANIFEST == 0 then return false end
+
+    local supply = O.wrapCached(cfg.SUPPLY_CHEST)
+    if not supply then return false end
+
+    -- Scan what's already in the supply chest
+    local existing = {}
+    local contents = supply.list()
+    if contents then
+        for _, item in pairs(contents) do
+            existing[item.name] = (existing[item.name] or 0) + item.count
+        end
+    end
+
+    local catalogue = cache.catalogue
+    local didWork = false
+
+    for _, manifest in ipairs(cfg.SUPPLY_MANIFEST) do
+        local have = existing[manifest.name] or 0
+        local want = manifest.count or 0
+        local deficit = want - have
+
+        if deficit > 0 and catalogue[manifest.name] then
+            local remaining = deficit
+            local srcSnapshot = { table.unpack(catalogue[manifest.name]) }
+            for _, source in ipairs(srcSnapshot) do
+                if source.total > 0 then
+                    local chest = O.wrapCached(source.chest)
+                    if chest then
+                        for slot, slotItem in pairs(chest.list()) do
+                            if slotItem.name == manifest.name then
+                                local toMove = math.min(slotItem.count, remaining)
+                                local n = chest.pushItems(cfg.SUPPLY_CHEST, slot, toMove)
+                                if n and n > 0 then
+                                    state.adjustCache(manifest.name, source.chest, -n)
+                                    remaining = remaining - n
+                                    didWork = true
+                                    log.info("SUPPLY", "%s x%d -> %s", manifest.name, n, cfg.SUPPLY_CHEST)
+                                    if remaining <= 0 then break end
+                                end
+                            end
+                        end
+                    end
+                end
+                if remaining <= 0 then break end
+            end
+        end
+    end
+
+    return didWork
+end
+
 -------------------------------------------------
 -- Order / Dispense
 -------------------------------------------------
@@ -1012,6 +1111,24 @@ function O.craftItem(recipeIdx)
     end
 end
 
+-------------------------------------------------
+-- Recursive crafting (multi-step chains)
+-------------------------------------------------
+
+function O.recursiveCraft(outputName, count)
+    if not ctx.craftEngine then
+        return false, "Craft engine not initialized"
+    end
+    activity.crafting = true
+    state.needsRedraw = true
+    state.smelterNeedsRedraw = true
+    local ok, err = ctx.craftEngine.executeChain(outputName, count, ctx)
+    activity.crafting = false
+    state.needsRedraw = true
+    state.smelterNeedsRedraw = true
+    return ok, err
+end
+
 -------------------------------------------------
 -- Smelting recipe persistence
 -------------------------------------------------