♻️ 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-to-json-schema/dist/esm/parsers/date.js

@@ -1,46 +0,0 @@
-import { setResponseValueAndErrors } from "../errorMessages.js";
-export function parseDateDef(def, refs, overrideDateStrategy) {
-    const strategy = overrideDateStrategy ?? refs.dateStrategy;
-    if (Array.isArray(strategy)) {
-        return {
-            anyOf: strategy.map((item, i) => parseDateDef(def, refs, item)),
-        };
-    }
-    switch (strategy) {
-        case "string":
-        case "format:date-time":
-            return {
-                type: "string",
-                format: "date-time",
-            };
-        case "format:date":
-            return {
-                type: "string",
-                format: "date",
-            };
-        case "integer":
-            return integerDateParser(def, refs);
-    }
-}
-const integerDateParser = (def, refs) => {
-    const res = {
-        type: "integer",
-        format: "unix-time",
-    };
-    if (refs.target === "openApi3") {
-        return res;
-    }
-    for (const check of def.checks) {
-        switch (check.kind) {
-            case "min":
-                setResponseValueAndErrors(res, "minimum", check.value, // This is in milliseconds
-                check.message, refs);
-                break;
-            case "max":
-                setResponseValueAndErrors(res, "maximum", check.value, // This is in milliseconds
-                check.message, refs);
-                break;
-        }
-    }
-    return res;
-};