♻️ 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/@oslojs/encoding/dist/hex.js

@@ -1,59 +0,0 @@
-export function encodeHexUpperCase(data) {
-    let result = "";
-    for (let i = 0; i < data.length; i++) {
-        result += alphabetUpperCase[data[i] >> 4];
-        result += alphabetUpperCase[data[i] & 0x0f];
-    }
-    return result;
-}
-export function encodeHexLowerCase(data) {
-    let result = "";
-    for (let i = 0; i < data.length; i++) {
-        result += alphabetLowerCase[data[i] >> 4];
-        result += alphabetLowerCase[data[i] & 0x0f];
-    }
-    return result;
-}
-export function decodeHex(data) {
-    if (data.length % 2 !== 0) {
-        throw new Error("Invalid hex string");
-    }
-    const result = new Uint8Array(data.length / 2);
-    for (let i = 0; i < data.length; i += 2) {
-        if (!(data[i] in decodeMap)) {
-            throw new Error("Invalid character");
-        }
-        if (!(data[i + 1] in decodeMap)) {
-            throw new Error("Invalid character");
-        }
-        result[i / 2] |= decodeMap[data[i]] << 4;
-        result[i / 2] |= decodeMap[data[i + 1]];
-    }
-    return result;
-}
-const alphabetUpperCase = "0123456789ABCDEF";
-const alphabetLowerCase = "0123456789abcdef";
-const decodeMap = {
-    "0": 0,
-    "1": 1,
-    "2": 2,
-    "3": 3,
-    "4": 4,
-    "5": 5,
-    "6": 6,
-    "7": 7,
-    "8": 8,
-    "9": 9,
-    a: 10,
-    A: 10,
-    b: 11,
-    B: 11,
-    c: 12,
-    C: 12,
-    d: 13,
-    D: 13,
-    e: 14,
-    E: 14,
-    f: 15,
-    F: 15
-};