Deploy JobSync — job search tracker on ringtail k3s (#288)

## Summary

C2 Mikado chain to deploy [JobSync](https://github.com/Gsync/jobsync) — a self-hosted job application tracker — to ringtail's k3s cluster.

### Mikado Graph

```
deploy-jobsync (goal)
├── build-jobsync-container
│   └── mirror-jobsync
└── integrate-jobsync-ollama
```

### What is JobSync?

Next.js app with SQLite for tracking job applications. Features resume management, application pipeline tracking, and AI-powered resume review/job matching.

### Key Decisions

- **Ringtail k3s** (not minikube-indri) — colocates with Ollama for zero-latency AI
- **Nix container** via `buildLayeredImage` — no Dockerfile, mirrors upstream source on forge
- **Ollama for AI** — uses existing deployment, no API keys needed for AI features
- **No upstream fork** — vanilla JobSync, Anthropic AI deferred to future work if needed

### Current Status

Planning phase — cards committed, ready for review before implementation begins.

Reviewed-on: #288

argocd/apps/jobsync.yaml

@@ -0,0 +1,18 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: jobsync
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/blumeops.git
+    targetRevision: main
+    path: argocd/manifests/jobsync
+  destination:
+    server: https://ringtail.tail8d86e.ts.net:6443
+    namespace: jobsync
+  syncPolicy:
+    syncOptions:
+      - CreateNamespace=true