Initial commit: full Phases 1-6 implementation

Post-repair hardware validation pipeline for Proxmox cluster hosts.
Go orchestrator + in-image agent + mkosi live image + bundled dnsmasq
PXE + SQLite + HTMX/SSE UI + notify registry + janitor + full docs.

internal/janitor/adapter.go

@@ -0,0 +1,33 @@
+package janitor
+
+import (
+	"context"
+	"time"
+
+	"vetting/internal/logs"
+	"vetting/internal/store"
+)
+
+// StoreAdapter bridges the concrete orchestrator stores to the Janitor's
+// dependency interface. Kept in the janitor package so the orchestrator
+// wire-up stays a single-line: janitor.New(cfg, &janitor.StoreAdapter{...}).
+type StoreAdapter struct {
+	Runs      *store.Runs
+	Artifacts *store.Artifacts
+	Logs      *logs.Hub
+}
+
+func (a *StoreAdapter) CompletedOlderThan(ctx context.Context, cutoff time.Time) ([]int64, error) {
+	return a.Runs.CompletedOlderThan(ctx, cutoff)
+}
+
+func (a *StoreAdapter) DeleteArtifactsForRun(ctx context.Context, runID int64) ([]store.Artifact, error) {
+	return a.Artifacts.DeleteForRun(ctx, runID)
+}
+
+func (a *StoreAdapter) LogPathFor(runID int64) string {
+	if a.Logs == nil {
+		return ""
+	}
+	return a.Logs.PathFor(runID)
+}