chore: Remove node_modules, dist, .env from tracking

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

node_modules/zod-to-json-schema/dist/esm/parsers/undefined.js

@@ -1,6 +0,0 @@
-import { parseAnyDef } from "./any.js";
-export function parseUndefinedDef(refs) {
-    return {
-        not: parseAnyDef(refs),
-    };
-}