♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/zod/v3/helpers/partialUtil.d.ts

@@ -1,8 +0,0 @@
-import type { ZodArray, ZodNullable, ZodObject, ZodOptional, ZodRawShape, ZodTuple, ZodTupleItems, ZodTypeAny } from "../types.js";
-export declare namespace partialUtil {
-    type DeepPartial<T extends ZodTypeAny> = T extends ZodObject<ZodRawShape> ? ZodObject<{
-        [k in keyof T["shape"]]: ZodOptional<DeepPartial<T["shape"][k]>>;
-    }, T["_def"]["unknownKeys"], T["_def"]["catchall"]> : T extends ZodArray<infer Type, infer Card> ? ZodArray<DeepPartial<Type>, Card> : T extends ZodOptional<infer Type> ? ZodOptional<DeepPartial<Type>> : T extends ZodNullable<infer Type> ? ZodNullable<DeepPartial<Type>> : T extends ZodTuple<infer Items> ? {
-        [k in keyof Items]: Items[k] extends ZodTypeAny ? DeepPartial<Items[k]> : never;
-    } extends infer PI ? PI extends ZodTupleItems ? ZodTuple<PI> : never : never : T;
-}