♻️ 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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✅ 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/esm/parsers/nullable.js

@@ -1,33 +0,0 @@
-import { parseDef } from "../parseDef.js";
-import { primitiveMappings } from "./union.js";
-export function parseNullableDef(def, refs) {
-    if (["ZodString", "ZodNumber", "ZodBigInt", "ZodBoolean", "ZodNull"].includes(def.innerType._def.typeName) &&
-        (!def.innerType._def.checks || !def.innerType._def.checks.length)) {
-        if (refs.target === "openApi3") {
-            return {
-                type: primitiveMappings[def.innerType._def.typeName],
-                nullable: true,
-            };
-        }
-        return {
-            type: [
-                primitiveMappings[def.innerType._def.typeName],
-                "null",
-            ],
-        };
-    }
-    if (refs.target === "openApi3") {
-        const base = parseDef(def.innerType._def, {
-            ...refs,
-            currentPath: [...refs.currentPath],
-        });
-        if (base && "$ref" in base)
-            return { allOf: [base], nullable: true };
-        return base && { ...base, nullable: true };
-    }
-    const base = parseDef(def.innerType._def, {
-        ...refs,
-        currentPath: [...refs.currentPath, "anyOf", "0"],
-    });
-    return base && { anyOf: [base, { type: "null" }] };
-}