Host detail v2: full pipeline + per-stage logs + WoL diagnostics

Pipeline now always renders all 13 nodes (3 pre-stage + 9 stage +
Completed), synthesising ghosts from run state when stage rows
aren't seeded yet. Makes a WaitingWoL host show the full timeline
ahead of it instead of just 4 dots.

Agent tags each log line with its stage; logs.Hub fans out to both
log-{runID} and log-{runID}-{stage} SSE events so the detail page
can show per-stage tabs with a pure-CSS radio-sibling switch. Flat
run log prepends [stage] so grep still works.

Dispatcher writes picked/sent-WoL/heartbeat lines into the per-run
log — the operator opens the detail page, sees WaitingWoL stuck,
and reads exactly what the dispatcher did and why nothing's
progressing, instead of having to tail journalctl on the LXC.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

cmd/vetting/main.go

@@ -103,6 +103,7 @@ func main() {
 		SpecDiffs: specDiffStore,
 		Artifacts: artifactStore,
 		EventHub:  hub,
+		Logs:      logHub,
 		Runner:    runner,
 		Tiles:     tiles,
 		PublicURL: cfg.Server.PublicURL,
@@ -126,7 +127,7 @@ func main() {
 	}
 	agentAPI.LiveKernelURL, agentAPI.LiveInitrdURL = pxe.BuildLiveURLs(cfg.PXE.OrchestratorURL)
 
-	dispatcher := orchestrator.NewDispatcher(cfg.Dispatcher.MaxConcurrentRuns, runStore, hostStore, runner)
+	dispatcher := orchestrator.NewDispatcher(cfg.Dispatcher.MaxConcurrentRuns, runStore, hostStore, runner, logHub)
 	iperfSup := orchestrator.NewIperfSupervisor(cfg.Network.IperfPort)
 
 	janitorSvc := janitor.New(janitor.Config{