C1: migrate cv + docs from minikube to indri-native (#342)

## Summary

Replace the cv (`cv.eblu.me`) and docs (`docs.eblu.me`) minikube Deployments with indri-native ansible roles. Caddy serves the extracted release tarballs directly via a new `kind: static` service-block — no daemon, no nginx pod, no ProxyGroup ingress on the request path. Mirrors the rationale of the recent devpi migration; part of the broader minikube wind-down.

## What's in this commit

- `ansible/roles/{cv,docs}` — sentinel-gated tarball download + extract into `~/{cv,docs}/content/`
- `ansible/roles/caddy/` — new `kind: static` branch in the Caddyfile template (encoded gzip, immutable cache headers for fingerprinted assets, optional `try_html` for Quartz-style clean URLs, optional per-path `download_paths` for the resume PDF's `Content-Disposition`)
- `ansible/playbooks/indri.yml` — wires `cv` and `docs` roles before `caddy`
- `service-versions.yaml` — both services flip to `type: ansible`. `docs.current-version` stays at `1.28.2` for this commit so `container-version-check` keeps passing while `containers/quartz/Dockerfile` still exists; it moves to the docs release tag in the cleanup commit
- `.forgejo/workflows/{cv-deploy,build-blumeops}.yaml` — deploy step now bumps `cv_version`/`docs_version` in the role defaults and pushes; running ansible + purging the Fly cache is manual from gilbert (matches devpi)
- Docs: `docs/how-to/operations/{cv,docs}-on-indri.md`, updated `docs/reference/services/{cv,docs}.md`, changelog fragment

## What is not in this commit

The dead artifacts. After PR review and successful cutover, a follow-up commit deletes:

- `argocd/apps/{cv,docs}.yaml` and `argocd/manifests/{cv,docs}/`
- `containers/cv/`, `containers/quartz/`
- `CONTAINER_TO_SERVICE['quartz']` mapping in `mise-tasks/container-version-check`
- bumps `docs.current-version` in `service-versions.yaml` to the release tag

## Cutover plan (manual, from gilbert, after review)

1. **Take down old:**
   - Remove the cv and docs Applications: `argocd app delete cv --cascade && argocd app delete docs --cascade`
   - Verify k8s namespaces gone: `kubectl --context=minikube-indri get ns | grep -E '^(cv|docs)\\b'` (should be empty)
   - Verify tailnet MagicDNS no longer advertises the VIPs: `nslookup cv.tail8d86e.ts.net` and `nslookup docs.tail8d86e.ts.net` should both fail
2. **Bring up new:**
   - `mise run provision-indri -- --tags cv,docs,caddy --check --diff` (already validated on branch)
   - `mise run provision-indri -- --tags cv,docs,caddy`
   - `fly ssh console -a blumeops-proxy -C "sh -c 'rm -rf /tmp/cache && nginx -s reload'"`
3. **Verify:** `mise run services-check` and the curl checks listed in `docs/how-to/operations/{cv,docs}-on-indri.md`
4. **Cleanup commit + merge.**

Total expected downtime: minutes (not the few-hour budget you authorized).

## Test plan
- [ ] `mise run provision-indri -- --tags cv,docs --check --diff` clean
- [ ] `mise run provision-indri -- --tags caddy --check --diff` shows only the cv + docs blocks changing as previewed in the PR thread
- [ ] After cutover: `cv.eblu.me`, `cv.ops.eblu.me`, `docs.eblu.me`, `docs.ops.eblu.me` all return 200
- [ ] `cv.eblu.me/resume.pdf` includes `Content-Disposition: attachment`
- [ ] A clean Quartz URL (e.g. `docs.eblu.me/explanation/agent-change-process`) resolves to the right page
- [ ] `mise run services-check` clean
- [ ] `mise run service-review --type ansible` shows cv and docs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: #342

ansible/roles/caddy/defaults/main.yml

@@ -72,10 +72,16 @@ caddy_services:
     backend: "https://go.tail8d86e.ts.net"
   - name: docs
     host: "docs.{{ caddy_domain }}"
-    backend: "https://docs.tail8d86e.ts.net"
+    kind: static
+    root: "{{ docs_content_dir }}"
+    try_html: true  # Quartz: path → path/ → path.html → 404.html
   - name: cv
     host: "cv.{{ caddy_domain }}"
-    backend: "https://cv.tail8d86e.ts.net"
+    kind: static
+    root: "{{ cv_content_dir }}"
+    download_paths:
+      - path: /resume.pdf
+        filename: erich-blume-resume.pdf
   - name: nvr
     host: "nvr.{{ caddy_domain }}"
     backend: "https://nvr.tail8d86e.ts.net"