Add reference/tools/ category with Dagger, ArgoCD CLI, Ansible, and Pulumi cards (#178)

## Summary

- Create `docs/reference/tools/` with four reference cards: Dagger (build engine), ArgoCD CLI (deployment workflows), Ansible (config management), and Pulumi (DNS/Tailscale IaC)
- Move `ansible/roles.md` → `tools/ansible.md`, broadened with CLI patterns and dry-run usage
- Update `reference.md` index: add "Tools" section, remove old "Ansible" section
- Update `update-documentation.md` to reflect Dagger build process (workflow steps, manual build recipe, runner environment)
- Update `adopt-dagger-ci.md` plan to note how-to articles were handled via reference card + existing how-to updates
- Fix all broken `[[roles]]` wiki-links across 5 files → `[[ansible]]`

## Verification

- `docs-check-links` ✓ — no broken wiki-links
- `docs-check-index` ✓ — all docs referenced in category index
- `docs-check-filenames` ✓ — no duplicate filenames
- All pre-commit hooks pass

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/178

docs/reference/reference.md

@@ -52,6 +52,15 @@ Host inventory and network configuration.
 - [[routing|Routing]] - DNS domains, port mappings
 - [[power]] - Battery-backed power chain
 
+## Tools
+
+Build, deployment, and IaC tool reference.
+
+- [[dagger]] - CI/CD build engine (Python SDK)
+- [[argocd-cli]] - ArgoCD CLI workflows
+- [[ansible]] - Configuration management for indri
+- [[pulumi]] - Infrastructure-as-Code (DNS, Tailscale ACLs)
+
 ## Kubernetes
 
 Cluster configuration and application registry.
@@ -61,12 +70,6 @@ Cluster configuration and application registry.
 - [[tailscale-operator]] - Tailscale ingress for k8s services
 - [[external-secrets]] - Secrets management
 
-## Ansible
-
-Configuration management for [[indri]]-hosted services.
-
-- [[roles]] - Available ansible roles
-
 ## Storage
 
 Network storage and backup configuration.

docs/reference/services/argocd.md

@@ -34,5 +34,6 @@ GitOps continuous delivery platform for the [[cluster|Kubernetes cluster]].
 
 ## Related
 
+- [[argocd-cli]] - CLI usage and deployment workflows
 - [[apps|Apps]] - Full application registry
 - [[forgejo]] - Git source

docs/reference/tools/ansible.md

@@ -1,14 +1,27 @@
 ---
-title: Roles
-modified: 2026-02-07
+title: Ansible
+modified: 2026-02-12
 tags:
   - ansible
   - reference
 ---
 
-# Ansible Roles
+# Ansible
 
-Roles for provisioning services on [[indri]]. Run via `mise run provision-indri`.
+Configuration management for native services on [[indri]]. The primary playbook is `ansible/playbooks/indri.yml`.
+
+## CLI Patterns
+
+```bash
+# Full provisioning
+mise run provision-indri
+
+# Specific role only
+mise run provision-indri -- --tags caddy
+
+# Dry run (preview changes)
+mise run provision-indri -- --check --diff
+```
 
 ## Available Roles
 
@@ -44,5 +57,5 @@ Roles that need secrets use 1Password via the playbook's `pre_tasks`. Secrets ar
 
 ## Related
 
-- [[indri]] - Target host
-- [[observability]] - Metrics collection
+- [[indri]] — Target host
+- [[observability]] — Metrics collection

docs/reference/tools/argocd-cli.md

@@ -0,0 +1,54 @@
+---
+title: ArgoCD CLI
+modified: 2026-02-12
+tags:
+  - reference
+  - gitops
+  - argocd
+---
+
+# ArgoCD CLI
+
+Command-line workflows for deploying and managing applications via [[argocd]].
+
+## CLI Commands
+
+```bash
+argocd app list                # List all applications and sync status
+argocd app get <app>           # Show app details, health, and resources
+argocd app diff <app>          # Preview what would change on sync
+argocd app sync <app>          # Apply pending changes
+argocd app sync apps           # Sync the app-of-apps (picks up new Application manifests)
+```
+
+## Login
+
+```bash
+argocd login argocd.ops.eblu.me \
+  --username admin \
+  --password "$(op read 'op://vg6xf6vvfmoh5hqjjhlhbeoaie/srogeebssulhtb6tnqd7ls6qey/password')"
+```
+
+## Branch-Testing Workflow
+
+Test changes from a feature branch before merging:
+
+```bash
+# 1. Point the app at your branch
+argocd app set <service> --revision <branch>
+
+# 2. Sync to deploy the branch version
+argocd app sync <service>
+
+# 3. Test the changes...
+
+# 4. After merge, reset to main and sync
+argocd app set <service> --revision main
+argocd app sync <service>
+```
+
+## Related
+
+- [[argocd]] — Service reference (URLs, credentials, sync policy)
+- [[apps]] — Full application registry
+- [[forgejo]] — Git source

docs/reference/tools/dagger.md

@@ -0,0 +1,78 @@
+---
+title: Dagger
+modified: 2026-02-12
+tags:
+  - reference
+  - ci-cd
+  - dagger
+---
+
+# Dagger
+
+Build engine for BlumeOps CI/CD pipelines. Replaces shell-based build scripts with Python functions that run identically locally and in CI.
+
+## Quick Reference
+
+| Property | Value |
+|----------|-------|
+| **Module** | `blumeops-ci` |
+| **Engine Version** | v0.19.11 |
+| **SDK** | Python |
+| **Source** | `.dagger/src/blumeops_ci/main.py` |
+| **Config** | `dagger.json` |
+
+## Functions
+
+| Function | Signature | Description |
+|----------|-----------|-------------|
+| `build` | `(src, container_name) → Container` | Build a container from `containers/<name>/Dockerfile` |
+| `publish` | `(src, container_name, version, registry?) → str` | Build and push to registry (default: `registry.ops.eblu.me`) |
+| `build_changelog` | `(src, version) → Directory` | Run towncrier to collect changelog fragments |
+| `build_docs` | `(src, version) → File` | Build changelog then Quartz site, return docs tarball |
+
+## CLI Examples
+
+```bash
+# Build a container
+dagger call build --src=. --container-name=devpi
+
+# Drop into container shell for inspection
+dagger call build --src=. --container-name=devpi terminal
+
+# Debug a failure interactively
+dagger call --interactive build --src=. --container-name=devpi
+
+# Publish a container to zot
+dagger call publish --src=. --container-name=devpi --version=v1.1.0
+
+# Build docs tarball locally
+dagger call build-docs --src=. --version=dev export --path=./docs-dev.tar.gz
+
+# Debug a docs build failure
+dagger call --interactive build-docs --src=. --version=dev
+```
+
+## Secrets
+
+Dagger has a first-class `Secret` type — values are never logged or cached. Pass secrets from environment variables using the `env:VAR` syntax:
+
+```bash
+dagger call release-docs \
+  --src=. --version=v1.6.0 \
+  --forgejo-token=env:FORGEJO_TOKEN \
+  --argocd-token=env:ARGOCD_TOKEN
+```
+
+In [[forgejo]] Actions, secrets are injected as env vars. Locally, mise tasks call `op read` to populate them.
+
+## Caveats
+
+- **Pre-1.0 API** — Current version is v0.19.x. Pin the CLI version and test upgrades on a branch before adopting.
+- **Privileged container** — The Dagger engine requires privileged container access. The Forgejo runner's DinD sidecar provides this.
+
+## Related
+
+- [[forgejo]] — CI/CD trigger layer
+- [[zot]] — Container registry (publish target)
+- [[docs]] — Documentation site (build target)
+- [[adopt-dagger-ci]] — Adoption plan (phases 1–3 complete)

docs/reference/tools/pulumi.md

@@ -0,0 +1,53 @@
+---
+title: Pulumi
+modified: 2026-02-12
+tags:
+  - reference
+  - iac
+  - pulumi
+---
+
+# Pulumi
+
+Infrastructure-as-Code for DNS and Tailscale ACL management. Two independent projects, both using the Python SDK with uv toolchain.
+
+## Projects
+
+| Project | Stack | Source | Manages |
+|---------|-------|--------|---------|
+| `blumeops-dns` | `eblu-me` | `pulumi/gandi/` | DNS records for `eblu.me` via Gandi LiveDNS |
+| `blumeops-tailnet` | `tail8d86e` | `pulumi/tailscale/` | ACL policy, device tags, auth keys |
+
+### DNS (`blumeops-dns`)
+
+Manages `*.ops.eblu.me` wildcard and base records pointing to [[indri]]'s Tailscale IP, plus public CNAME records for services routed via [[flyio-proxy]].
+
+### Tailnet (`blumeops-tailnet`)
+
+Manages the ACL policy (`policy.hujson`), device tags for [[indri]] and [[sifaka]], and auth keys for the Fly.io proxy.
+
+## CLI Patterns
+
+All operations use mise tasks that wrap `pulumi` with the correct stack and working directory:
+
+```bash
+# DNS
+mise run dns-preview     # Preview DNS changes
+mise run dns-up          # Apply DNS changes
+
+# Tailscale
+mise run tailnet-preview # Preview ACL/tag changes
+mise run tailnet-up      # Apply ACL/tag changes
+```
+
+## Authentication
+
+- **Gandi**: `GANDI_PERSONAL_ACCESS_TOKEN` environment variable
+- **Tailscale**: `TAILSCALE_API_KEY` environment variable
+- **Pulumi state**: Local backend (no Pulumi Cloud)
+
+## Related
+
+- [[gandi]] — DNS hosting
+- [[tailscale]] — Tailnet configuration
+- [[routing]] — How DNS records map to services