steve a45c801884 feat(alerts): per-source-group dedup so two failing backups produce two alerts
Until now the open-alert key was (host_id, kind, resolved_at IS NULL).
A host with two source groups both failing collapsed onto one
backup_failed row — second failure bumped last_seen_at and
overwrote the message but never re-fan-out. Operators saw one
alert that appeared to flap, not two distinct broken things.

Schema changes (column-level ALTER, no rebuild):

- 0015 jobs.source_group_id (FK → source_groups, ON DELETE SET NULL,
  index). Populated for backup jobs in CreateJob.
- 0016 alerts.dedup_key (NOT NULL DEFAULT ''). The old alerts_open
  partial index gets dropped and replaced with a UNIQUE partial
  index on (host_id, kind, dedup_key) WHERE resolved_at IS NULL —
  the index is now the actual dedup primitive.

Plumbing:

- RaiseOrTouch / AutoResolve / Alert struct gain dedup_key.
- engine.JobFinishedEvent gains SourceGroupID; handleJobFinished
  passes it through for backup_failed only (forget/prune/check stay
  repo-scoped with key='').
- ws.handler reads SourceGroupID off the freshly-loaded job row.
- dispatchJobWithPayload gains a *string sourceGroupID arg; the
  per-group Run-now path and schedule.fire path pass &g.ID.

Test coverage: TestRaiseOrTouchDedupsPerSourceGroup proves two
distinct groups produce two distinct open alerts and that resolving
one does not auto-resolve the other.

Dev tool: cmd/_fake_alert gains -dedup-key flag.
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restic-manager

Self-hosted, browser-based, single-pane-of-glass for managing restic backups across a fleet of Linux and Windows endpoints.

Status: pre-alpha. Phase 0 (project bootstrap) complete; Phase 1 (MVP) in progress. See spec.md for the design and tasks.md for the roadmap.

What it does (target)

  • Central visibility into backup state for every endpoint
  • Trigger any restic operation remotely (backup, forget, prune, check, unlock, snapshots, stats, diff, restore)
  • Manage per-host backup schedules from the UI
  • Live job progress streamed back to the UI
  • Restore wizard (browse snapshots, pick paths, restore to original or alternate host)
  • Repo health surfacing (size, dedup ratio, last check, lock state)
  • Alerting on failure or staleness
  • Cross-platform agent (Linux + Windows)
  • Ransomware-resistant repo access via append-only credentials

Architecture (one-line summary)

A small Go control-plane on the Proxmox host, lightweight Go agents on each endpoint that hold an outbound WebSocket to the control-plane, and a restic/rest-server on Unraid that holds the actual backup data. The control-plane never touches backup bytes.

Full architecture diagram and component breakdown: spec.md §3.

Repository layout

cmd/server/        control-plane binary
cmd/agent/         endpoint agent binary
internal/api       shared API types (REST + WS envelopes)
internal/server/   HTTP, WS, UI handlers
internal/agent/    service integration, restic runner, local scheduler
internal/restic    restic CLI wrapper
internal/store     SQLite persistence
internal/crypto    secret encryption
internal/auth      passwords, sessions, agent tokens
web/               server-rendered templates + static assets
deploy/            Dockerfile, docker-compose.yml, install scripts
design/            UI wireframes (Phase 0 design pass)

Local development

Requires Go 1.25+ (built and tested on 1.26). The floor is set by modernc.org/sqlite v1.50.

make build           # builds cmd/server and cmd/agent into ./bin
make test            # runs go test ./...
make lint            # runs golangci-lint
make run-server      # runs the server (dev defaults)

License

PolyForm Noncommercial 1.0.0 — see LICENSE. Free for personal, hobby, research, educational, governmental, and other noncommercial use. Commercial use requires a separate license.

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