Build local containers for k8s services (#61)

## Summary
- Move devpi Dockerfile from argocd/manifests to containers/devpi/
- Add containers for: transmission, teslamate, miniflux, kiwix-serve, kubectl
- Update all k8s deployments to use local images (registry.ops.eblu.me/blumeops/*)
- All containers use v1.0.0 tag for initial release

## Containers Added
| Container | Source | Notes |
|-----------|--------|-------|
| devpi | python:3.12-slim | Existing, moved to containers/ |
| kubectl | alpine + download | For zim-watcher CronJob |
| miniflux | Go build from source | v2.2.16 |
| kiwix-serve | Download pre-built binary | v3.8.1 |
| transmission | alpine + apk install | Simpler than linuxserver image |
| teslamate | Elixir build from source | v2.2.0 |

## Deployment and Testing
- [ ] Build and tag devpi-v1.0.0
- [ ] Build and tag kubectl-v1.0.0
- [ ] Build and tag miniflux-v1.0.0
- [ ] Build and tag kiwix-serve-v1.0.0
- [ ] Build and tag transmission-v1.0.0
- [ ] Build and tag teslamate-v1.0.0
- [ ] Sync ArgoCD apps and verify services

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

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/61

argocd/manifests/kiwix/deployment.yaml

@@ -20,9 +20,10 @@ spec:
       containers:
         # Main kiwix-serve container
         - name: kiwix-serve
-          image: ghcr.io/kiwix/kiwix-serve:3.8.1
-          command: ["/bin/sh", "-c"]
+          image: registry.ops.eblu.me/blumeops/kiwix-serve:v1.0.0
           args:
+            - "/bin/sh"
+            - "-c"
             - "kiwix-serve --port=80 /data/complete/*.zim"
           ports:
             - containerPort: 80
@@ -52,7 +53,7 @@ spec:
 
         # Sidecar: Syncs declarative ZIM torrents to transmission
         - name: torrent-sync
-          image: lscr.io/linuxserver/transmission:4.0.6  # Has transmission-remote CLI
+          image: registry.ops.eblu.me/blumeops/transmission:v1.0.1
           command: ["/bin/bash", "-c"]
           args:
             - |