## Summary
- Add native Dagger build of valkey 8.1.6-r0 on Alpine 3.22 at `containers/valkey/`
- Swap paperless redis sidecar and immich-valkey from `docker.io/valkey/valkey:8.1-alpine` to `registry.ops.eblu.me/blumeops/valkey:v8.1.6-r0-946fa75`
- Resolves the DR-2026-04 TODO in paperless kustomization about multi-arch redis
## Why
Move toward fully locally-built containers for supply chain control. Paperless and immich both pulled the same upstream tag — one mirror serves both. Authentik's nix-built Redis stays separate (different image entirely).
## Risk
Low. Both sidecars are stateless caches:
- paperless redis: no volumeMount (in-pod localhost, pure memory)
- immich-valkey: `emptyDir` (cache only)
Pod restart rebuilds the cache. Smoke-tested locally (PING/SET/GET roundtrip on `valkey 8.1.6` with `--bind 0.0.0.0 --protected-mode no`).
## Test plan
- [ ] After merge: `mise run container-build-and-release valkey` to rebuild with main SHA
- [ ] Update kustomizations to the `[main]` SHA tag (C0 follow-up)
- [ ] `argocd app sync paperless` and `argocd app sync immich`
- [ ] Verify pods come up healthy (paperless OCR queue functional, immich job queue functional)
- [ ] `mise run services-check`
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #346
Erich Blume
fabca04771