feat: migrate INWX DNS CLI to interactive Textual TUI

- replace CLI menu with multi-panel Textual interface (sidebar & data table)
- implement asynchronous loading for domains and DNS records via worker threads
- add support for optional 2FA/TOTP auto-unlock and manual TAN modal
- introduce .env configuration fallback for stored credentials
- add modals for creating, editing, and deleting DNS records
- enable inline row editing via mouse double-click and keyboard navigation
- update project documentation in README.md

README.md

@@ -1,2 +1,51 @@
-# inwx_tui
+# INWX DNS TUI Client
+
+Python ane **Textual** no upyog kari banavavama aavelo ek aadhunik, clickable Terminal User Interface (TUI) client, jena thi tame INWX na DNS records ane domains ne sahelta thi manage kari shako chho.
+
+## Features
+
+- **Clickable GUI in Terminal**: Mouse ane keyboard shortcuts banne dwara chalavi shakay chhe.
+- **Domain Overview**: Login thaya pachhi account ma rahela badha domains automatic left sidebar ma load thai jaay chhe.
+- **DNS Records Management**:
+  - DNS records jova (A, AAAA, CNAME, MX, TXT, SRV, CAA, NS, PTR, vagere).
+  - Double-click athva `Enter` dabavi ne record edit karvo.
+  - Nava records dropdown menu ane custom input sathe add karva.
+  - Records delete ane live refresh karva.
+- **2FA / TOTP Support**:
+  - Jo account ma 2FA chalu hoy to j code mangshe.
+  - `.env` ma TOTP secret mukine automatic unlock pan kari shakay chhe.
+- **Non-blocking Workers**: Background async workers lidhe API call vakhte UI freeze thatu nathi.
+
+---
+
+## File Structure
+
+```text
+inwx_tui/
+├── .env                  # INWX API credentials ane config
+├── inwx_api.py           # INWX JSON-RPC API logic ane session management
+├── tui_modals.py         # Modal popups (Login, 2FA prompt, Record Edit/Add)
+├── tui_app.py            # Textual TUI main interface ane event handling
+├── main.py               # Application start karvani entrypoint script
+└── README.md             # Project documentation
+
+## Requirements
+
+Python 3.10+
+
+Linux / macOS / WSL (Windows Terminal)
+
+´´´bash
+pip install textual python-dotenv requests pyotp
+
+## Usage
+
+```bash
+python3 main.py
+```
+Or, by granting execution permission:
+
+```bash
+chmod +x main.py
+./main.py