Add README

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

Author: gearnode

README.md

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+# Kit
+
+[![Go Reference](https://pkg.go.dev/badge/go.gearno.de/kit.svg)](https://pkg.go.dev/go.gearno.de/kit)
+[![Go Report Card](https://goreportcard.com/badge/go.gearno.de/kit)](https://goreportcard.com/report/go.gearno.de/kit)
+[![License: ISC](https://img.shields.io/badge/License-ISC-blue.svg)](https://opensource.org/licenses/ISC)
+
+Opinionated building blocks for production Go applications.
+
+## About
+
+Kit provides foundational packages for building production-grade Go services with sane defaults. It integrates observability primitives (OpenTelemetry tracing, Prometheus metrics, structured logging) as first-class concerns.
+
+## Packages
+
+| Package | Description |
+|---------|-------------|
+| `unit` | Application lifecycle, configuration, signal handling, and graceful shutdown |
+| `log` | Structured logging with `slog`, trace correlation, and multiple output formats |
+| `pg` | PostgreSQL client with connection pooling, tracing, and metrics |
+| `migrator` | Database schema migrations with advisory locking |
+| `httpserver` | HTTP server with request tracing and metrics |
+| `httpclient` | HTTP client with telemetry and connection management |
+| `worker` | Generic worker pool with backpressure |
+
+## Requirements
+
+- Go 1.25+
+
+## Installation
+
+```bash
+go get go.gearno.de/kit
+```
+
+## Documentation
+
+See the [Go package documentation](https://pkg.go.dev/go.gearno.de/kit) for API reference and examples.
+
+## Contributing
+
+Contributions are welcome. Please open an issue to discuss proposed changes before submitting a pull request.
+
+## License
+
+Kit is released under the [ISC License](LICENCE.txt).
+
+## Author
+
+Bryan Frimin