♻️ 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

✅ 11 pages built successfully
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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-to-json-schema/dist/esm/parsers/optional.js

@@ -1,21 +0,0 @@
-import { parseDef } from "../parseDef.js";
-import { parseAnyDef } from "./any.js";
-export const parseOptionalDef = (def, refs) => {
-    if (refs.currentPath.toString() === refs.propertyPath?.toString()) {
-        return parseDef(def.innerType._def, refs);
-    }
-    const innerSchema = parseDef(def.innerType._def, {
-        ...refs,
-        currentPath: [...refs.currentPath, "anyOf", "1"],
-    });
-    return innerSchema
-        ? {
-            anyOf: [
-                {
-                    not: parseAnyDef(refs),
-                },
-                innerSchema,
-            ],
-        }
-        : parseAnyDef(refs);
-};