refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

node_modules/p-limit/readme.md

@@ -0,0 +1,129 @@
+# p-limit
+
+> Run multiple promise-returning & async functions with limited concurrency
+
+*Works in Node.js and browsers.*
+
+## Install
+
+```sh
+npm install p-limit
+```
+
+## Usage
+
+```js
+import pLimit from 'p-limit';
+
+const limit = pLimit(1);
+
+const input = [
+	limit(() => fetchSomething('foo')),
+	limit(() => fetchSomething('bar')),
+	limit(() => doSomething())
+];
+
+// Only one promise is run at once
+const result = await Promise.all(input);
+console.log(result);
+```
+
+## API
+
+### pLimit(concurrency) <sup>default export</sup>
+
+Returns a `limit` function.
+
+#### concurrency
+
+Type: `number`\
+Minimum: `1`
+
+Concurrency limit.
+
+### limit(fn, ...args)
+
+Returns the promise returned by calling `fn(...args)`.
+
+#### fn
+
+Type: `Function`
+
+Promise-returning/async function.
+
+#### args
+
+Any arguments to pass through to `fn`.
+
+Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a *lot* of functions.
+
+### limit.activeCount
+
+The number of promises that are currently running.
+
+### limit.pendingCount
+
+The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
+
+### limit.clearQueue()
+
+Discard pending promises that are waiting to run.
+
+This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
+
+Note: This does not cancel promises that are already running.
+
+### limit.concurrency
+
+Get or set the concurrency limit.
+
+### limitFunction(fn, options) <sup>named export</sup>
+
+Returns a function with limited concurrency.
+
+The returned function manages its own concurrent executions, allowing you to call it multiple times without exceeding the specified concurrency limit.
+
+Ideal for scenarios where you need to control the number of simultaneous executions of a single function, rather than managing concurrency across multiple functions.
+
+```js
+import {limitFunction} from 'p-limit';
+
+const limitedFunction = limitFunction(async () => {
+	return doSomething();
+}, {concurrency: 1});
+
+const input = Array.from({length: 10}, limitedFunction);
+
+// Only one promise is run at once.
+await Promise.all(input);
+```
+
+#### fn
+
+Type: `Function`
+
+Promise-returning/async function.
+
+#### options
+
+Type: `object`
+
+#### concurrency
+
+Type: `number`\
+Minimum: `1`
+
+Concurrency limit.
+
+## FAQ
+
+### How is this different from the [`p-queue`](https://github.com/sindresorhus/p-queue) package?
+
+This package is only about limiting the number of concurrent executions, while `p-queue` is a fully featured queue implementation with lots of different options, introspection, and ability to pause the queue.
+
+## Related
+
+- [p-throttle](https://github.com/sindresorhus/p-throttle) - Throttle promise-returning & async functions
+- [p-debounce](https://github.com/sindresorhus/p-debounce) - Debounce promise-returning & async functions
+- [p-all](https://github.com/sindresorhus/p-all) - Run promise-returning & async functions concurrently with optional limited concurrency
+- [More…](https://github.com/sindresorhus/promise-fun)