♻️ 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/pipeline.js

@@ -1,20 +0,0 @@
-import { parseDef } from "../parseDef.js";
-export const parsePipelineDef = (def, refs) => {
-    if (refs.pipeStrategy === "input") {
-        return parseDef(def.in._def, refs);
-    }
-    else if (refs.pipeStrategy === "output") {
-        return parseDef(def.out._def, refs);
-    }
-    const a = parseDef(def.in._def, {
-        ...refs,
-        currentPath: [...refs.currentPath, "allOf", "0"],
-    });
-    const b = parseDef(def.out._def, {
-        ...refs,
-        currentPath: [...refs.currentPath, "allOf", a ? "1" : "0"],
-    });
-    return {
-        allOf: [a, b].filter((x) => x !== undefined),
-    };
-};