chore: Remove node_modules, dist, .env from tracking

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/side-channel-list/index.d.ts

@@ -1,13 +0,0 @@
-declare namespace getSideChannelList {
-	type Channel<K, V> = {
-		assert: (key: K) => void;
-		has: (key: K) => boolean;
-		get: (key: K) => V | undefined;
-		set: (key: K, value: V) => void;
-		delete: (key: K) => boolean;
-	};
-}
-
-declare function getSideChannelList<V, K>(): getSideChannelList.Channel<K, V>;
-
-export = getSideChannelList;