♻️ 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
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ 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/cjs/parsers/optional.js

@@ -1,25 +0,0 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.parseOptionalDef = void 0;
-const parseDef_js_1 = require("../parseDef.js");
-const any_js_1 = require("./any.js");
-const parseOptionalDef = (def, refs) => {
-    if (refs.currentPath.toString() === refs.propertyPath?.toString()) {
-        return (0, parseDef_js_1.parseDef)(def.innerType._def, refs);
-    }
-    const innerSchema = (0, parseDef_js_1.parseDef)(def.innerType._def, {
-        ...refs,
-        currentPath: [...refs.currentPath, "anyOf", "1"],
-    });
-    return innerSchema
-        ? {
-            anyOf: [
-                {
-                    not: (0, any_js_1.parseAnyDef)(refs),
-                },
-                innerSchema,
-            ],
-        }
-        : (0, any_js_1.parseAnyDef)(refs);
-};
-exports.parseOptionalDef = parseOptionalDef;