docs: Simplify main README following OpenStack style

Author: onelrian

README.md

@@ -1,35 +1,29 @@
-# Kubernetes Observability & Operations Platform
+# Kubernetes Observability Platform
 
-This repository provisions a comprehensive, production-grade observability and operations platform on **Google Kubernetes Engine (GKE)**. It integrates distinct, modular components to handle **deployment**, **monitoring**, **logging**, **tracing**, and **certificate management**.
+Comprehensive observability and operations infrastructure for Kubernetes, integrating monitoring, logging, tracing, and automated certificate management.
 
-## Core Components
+## Components
 
-*   **Observability (LGTM Stack)**:
-    *   **Loki**: Distributed logging.
-    *   **Grafana**: Visualization and dashboards.
-    *   **Tempo**: Distributed tracing.
-    *   **Mimir**: Scalable metrics (Prometheus storage).
-*   **GitOps (ArgoCD)**:
-    *   **ArgoCD**: Continuous delivery and declarative GitOps workflows.
-*   **Infrastructure Essentials**:
-    *   **Cert-Manager**: Automated TLS certificate issuance (Let's Encrypt).
-    *   **Ingress Controller**: NGINX Ingress for external traffic management.
+**Observability Stack**
+- Loki - Log aggregation
+- Grafana - Metrics visualization  
+- Tempo - Distributed tracing
+- Mimir - Long-term metrics storage
 
-## Project Structure
+**Operations**
+- ArgoCD - GitOps continuous delivery
+- Cert-Manager - Automated TLS certificates
+- NGINX Ingress - Traffic routing
 
-This project is built with **Terraform** and **Helm**, designed for modularity. You can deploy the entire stack or individual components as needed.
+## Getting Started
 
-> **Architecture Note**: This repository contains multiple deployable stacks (LGTM, ArgoCD) that share core infrastructure (Cert-Manager, Ingress). To prevent conflicts, ensure only **one** stack manages these shared resources, or use `terraform import` to adopt them into the correct state. See the [Shared Infrastructure Guide](docs/kubernetes-observability.md#modular-components--shared-infrastructure) for details.
+Each component includes detailed deployment guides:
 
-*   **[`lgtm-stack/`](lgtm-stack/README.md)**: The core internal monitoring platform.
-*   **[`argocd/`](argocd/README.md)**: The GitOps delivery engine.
-*   **[`cert-manager/`](cert-manager/README.md)**: Certificate management infrastructure.
-*   **[`ingress-controller/`](ingress-controller/README.md)**: Ingress routing infrastructure.
+- [LGTM Stack](lgtm-stack/README.md) - Complete observability platform
+- [ArgoCD](argocd/README.md) - GitOps delivery
+- [Cert-Manager](cert-manager/README.md) - Certificate management  
+- [Ingress Controller](ingress-controller/README.md) - Traffic routing
 
 ## Documentation
 
-*   **[Kubernetes Observability Guide](docs/kubernetes-observability.md)**: Deployment and architecture of the LGTM stack.
-*   **[Cert-Manager Deployment](docs/cert-manager-terraform-deployment.md)**: Terraform guide for Cert-Manager.
-*   **[Ingress Controller Deployment](docs/ingress-controller-terraform-deployment.md)**: Terraform guide for NGINX Ingress.
-*   **[ArgoCD Documentation](argocd/README.md)**: Setup and configuration for GitOps.
-
+Full deployment guides and references are available in the [`docs/`](docs/) directory.