fix: override dofile to preserve Opus env (require was nil in sub-modules)

CC:Tweaked dofile loads files with _G as environment, but Opus
injects require into the program's sandbox _ENV. All dofile'd
modules (especially display.lua) could not see require.

Also add dropperController to apps.db.

etc/apps.db

@@ -20,4 +20,9 @@
     category = "Inventory",
     run = "inventoryWebBridge.lua",
   },
+  [ "im_dropper" ] = {
+    title = "Dropper Ctrl",
+    category = "Inventory",
+    run = "dropperController.lua",
+  },
 }

inventoryClient.lua

@@ -27,6 +27,15 @@ local DROPPER_ANNOUNCE_INTERVAL = 30  -- seconds between dropper announcements
 local _baseDir = fs.getDir(shell.getRunningProgram())
 local function _path(rel) return fs.combine(_baseDir, rel) end
 
+-- Override dofile to load modules into our _ENV so they inherit
+-- Opus's require/package (CC:Tweaked dofile uses _G instead).
+local _ccDofile = dofile
+local function dofile(path)                     -- luacheck: ignore
+    local fn, err = loadfile(path, nil, _ENV)
+    if fn then return fn()
+    else error(err, 2) end
+end
+
 local CLIENT_CONFIG_FILE = _path(".client_config")
 
 -------------------------------------------------

inventoryManager.lua

@@ -15,6 +15,15 @@
 local _baseDir = fs.getDir(shell.getRunningProgram())
 local function _path(rel) return fs.combine(_baseDir, rel) end
 
+-- Override dofile to load modules into our _ENV so they inherit
+-- Opus's require/package (CC:Tweaked dofile uses _G instead).
+local _ccDofile = dofile
+local function dofile(path)                     -- luacheck: ignore
+    local fn, err = loadfile(path, nil, _ENV)
+    if fn then return fn()
+    else error(err, 2) end
+end
+
 -------------------------------------------------
 -- Structured logging & shared UI helpers
 -------------------------------------------------