Add Phase 3 tutorials with audience targeting

Create tutorials directory with learning-oriented content:
- what-is-blumeops: High-level orientation (Reader, AI)
- exploring-the-docs: Navigation guide (All audiences)
- ai-assistance-guide: Context for AI assistance (AI, Owner)
- contributing: First contribution workflow (Contributor)
- replicating-blumeops: Overview for replicators

Add replication sub-tutorials:
- tailscale-setup: Networking foundation
- kubernetes-bootstrap: Cluster setup
- argocd-config: GitOps configuration
- observability-stack: Metrics, logs, dashboards

Each tutorial explicitly identifies target audiences and links
heavily to reference material rather than re-explaining.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/tutorials/index.md

@@ -0,0 +1,47 @@
+---
+title: tutorials
+tags:
+  - tutorials
+---
+
+# Tutorials
+
+Learning-oriented guides for understanding and working with BlumeOps.
+
+## Audience Guide
+
+Each tutorial indicates which audiences it serves:
+
+| Icon | Audience | Description |
+|------|----------|-------------|
+| **Owner** | Erich | Quick recall and operational refreshers |
+| **AI** | Claude/AI agents | Context for AI-assisted operations |
+| **Reader** | External readers | Understanding what BlumeOps is |
+| **Contributor** | Operators/contributors | Helping with BlumeOps development |
+| **Replicator** | Replicators | Building your own similar setup |
+
+## Getting Started
+
+| Tutorial | Audiences | Description |
+|----------|-----------|-------------|
+| [[what-is-blumeops]] | Reader, AI | High-level orientation to the project |
+| [[exploring-the-docs]] | All | How to navigate and use this documentation |
+| [[ai-assistance-guide]] | AI, Owner | Context for effective AI-assisted operations |
+
+## Contributing
+
+| Tutorial | Audiences | Description |
+|----------|-----------|-------------|
+| [[contributing]] | Contributor | Your first contribution to BlumeOps |
+
+## Replication
+
+For those building their own homelab GitOps setup.
+
+| Tutorial | Audiences | Description |
+|----------|-----------|-------------|
+| [[replicating-blumeops]] | Replicator | Overview: building a similar environment |
+| [[tutorials/replication/tailscale-setup | Tailscale Setup]] | Replicator | Setting up Tailscale networking |
+| [[tutorials/replication/kubernetes-bootstrap | Kubernetes Bootstrap]] | Replicator | Bootstrapping a Kubernetes cluster |
+| [[tutorials/replication/argocd-config | ArgoCD Config]] | Replicator | Configuring GitOps with ArgoCD |
+| [[tutorials/replication/observability-stack | Observability Stack]] | Replicator | Metrics, logs, and dashboards |