i think it works

MAJOR antag backend update
- you cannot bruteforce the pen anymore
- uplink now uses bitflag to lock purchases
- poplock is handled entirely by the buyable uplink items
- tgui antag intro (for selected ones)

code/modules/asset_cache/asset_list.dm

@@ -13,9 +13,6 @@ GLOBAL_LIST_EMPTY(asset_datums)
 	var/_abstract = /datum/asset
 	var/cached_url_mappings
 
-	/// Whether or not this asset should be loaded in the "early assets" SS
-	var/early = FALSE
-
 /datum/asset/New()
 	GLOB.asset_datums[type] = src
 	register()
@@ -368,28 +365,3 @@ GLOBAL_LIST_EMPTY(asset_datums)
 /datum/asset/simple/namespaced/proc/get_htmlloader(filename)
 	return url2htmlloader(SSassets.transport.get_asset_url(filename, assets[filename]))
 
-/// A subtype to generate a JSON file from a list
-/datum/asset/json
-	_abstract = /datum/asset/json
-	/// The filename, will be suffixed with ".json"
-	var/name
-
-/datum/asset/json/send(client)
-	return SSassets.transport.send_assets(client, "data/[name].json")
-
-/datum/asset/json/get_url_mappings()
-	return list(
-		"[name].json" = SSassets.transport.get_asset_url("data/[name].json"),
-	)
-
-/datum/asset/json/register()
-	var/filename = "data/[name].json"
-	fdel(filename)
-	text2file(json_encode(generate()), filename)
-	SSassets.transport.register_asset(filename, fcopy_rsc(filename))
-	fdel(filename)
-
-/// Returns the data that will be JSON encoded
-/datum/asset/json/proc/generate()
-	SHOULD_CALL_PARENT(FALSE)
-	CRASH("generate() not implemented for [type]!")