feat: migrate to Poetry and implement multi-backend DNS management ✨

- Migrated from setuptools to Poetry; added pyproject.toml, poetry.lock,
  poetry.toml and .python-version (Python 3.11.12)
- Built out full directdnsonly Python package with BIND and CoreDNS MySQL
  backends, CherryPy REST API, persist-queue worker, and vyper-based config
- Auth credentials now read from config/env (app.auth_username/password)
  rather than hardcoded; override via DADNS_APP_AUTH_PASSWORD env var
- Added Dockerfile.deepseek: Python 3.11 slim + BIND9 + Poetry install
- Rewrote docker-compose.yml for local dev stack (MySQL + dadns services)
- Added SQL schema, docker/ BIND configs, justfile, tests, and README
- Expanded .gitignore for Poetry/Python project artifacts

README.md

@@ -0,0 +1,40 @@
+# DaDNS - DNS Management System
+
+## Features
+- Multi-backend DNS management (BIND, CoreDNS MySQL)
+- Atomic zone updates
+- Thread-safe operations
+- Loguru-based logging
+
+## Installation
+```bash
+    poetry install
+    poetry run dadns
+```
+
+## Configuration
+
+Edit config/app.yml for backend settings
+
+### Config Files
+#### `config/app.yml`
+```yaml
+timezone: Pacific/Auckland
+log_level: INFO
+queue_location: ./data/queues
+
+dns:
+  default_backend: bind
+  backends:
+    bind:
+      enabled: true
+      zones_dir: ./data/zones
+      named_conf: ./data/named.conf.include
+    
+    coredns_mysql:
+      enabled: true
+      host: "127.0.0.1"
+      port: 3306
+      database: "coredns"
+      username: "coredns"
+      password: "password"