Add StyLua/Selene/luau-lsp toolchain and make the scaffold lint-clean

Pin stylua, selene, and luau-lsp in rokit.toml so local dev and CI use the
same versions, and add their configs (stylua.toml, selene.toml, .luaurc).
Two behavior-preserving source touches make the existing scaffold pass:
guard the optional iteration in Components.readAttributes (clears a luau-lsp
type error) and normalize Gatherable.luau to StyLua's canonical form. Ignore
the CI-fetched globalTypes.d.luau.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -1,5 +1,6 @@
 # Rojo / Roblox
 sourcemap.json
+globalTypes.d.luau
 *.rbxl
 *.rbxlx
 *.rbxl.lock

.luaurc

@@ -0,0 +1,5 @@
+{
+	"languageMode": "nonstrict",
+	"lintErrors": false,
+	"globals": []
+}

rokit.toml

@@ -1,4 +1,8 @@
 # Toolchain pins (https://github.com/rojo-rbx/rokit). Run `rokit install`.
+# CI installs this exact set; pin versions so local dev and CI stay identical.
 [tools]
 rojo = "rojo-rbx/rojo@7.6.1"
 wally = "UpliftGames/wally@0.3.2"
+stylua = "JohnnyMorganz/stylua@2.5.2"
+selene = "Kampfkarren/selene@0.31.0"
+luau-lsp = "JohnnyMorganz/luau-lsp@1.68.1"

selene.toml

@@ -0,0 +1,12 @@
+# Selene lint configuration — CI runs `selene .` on every push/PR.
+# Uses the Roblox standard library (globals like `game`, `task`, `typeof`, `warn`).
+std = "roblox"
+
+# Generated Wally/Rojo artifacts are not ours to lint.
+exclude = ["Packages", "ServerPackages", "DevPackages"]
+
+[lints]
+# Roblox code legitimately leaves some values unused (e.g. connection handles);
+# keep the high-signal lints and let the formatter own style.
+empty_if = "warn"
+unused_variable = "warn"

src/components/Gatherable.luau

@@ -24,9 +24,7 @@ return Components.define({
 	onSetup = function(instance, values)
 		instance:SetAttribute("_HP", values.HP)
 
-		local host = if instance:IsA("BasePart")
-			then instance
-			else instance:FindFirstChildWhichIsA("BasePart")
+		local host = if instance:IsA("BasePart") then instance else instance:FindFirstChildWhichIsA("BasePart")
 		if not host then
 			warn(`[Gatherable] '{instance:GetFullName()}' has no BasePart to host a prompt`)
 			return

src/components/init.luau

@@ -37,9 +37,11 @@ end
 
 local function readAttributes(instance: Instance, attributes: { [string]: any }?)
 	local values = {}
-	for attrName, default in attributes or {} do
-		local v = instance:GetAttribute(attrName)
-		values[attrName] = if v == nil then default else v
+	if attributes then
+		for attrName, default in attributes do
+			local v = instance:GetAttribute(attrName)
+			values[attrName] = if v == nil then default else v
+		end
 	end
 	return values
 end

stylua.toml

@@ -0,0 +1,12 @@
+# StyLua formatting rules — CI runs `stylua --check` on every push/PR.
+# Tabs match the existing source; format with `stylua src demo` before committing.
+column_width = 120
+line_endings = "Unix"
+indent_type = "Tabs"
+indent_width = 4
+quote_style = "AutoPreferDouble"
+call_parentheses = "Always"
+collapse_simple_statement = "Never"
+
+[sort_requires]
+enabled = false