feat(atlas): per-job CI status + build-injected version in the UI

Phase C: the CI stage now shows the latest run's per-JOB status (Lint/Test,
Build, Deploy, …), each coloured by outcome, from the Gitea /actions/tasks
per-job entries — replacing the static cd.yml job-id list when live.
LatestRunJobs/RunNodes + RunSummary.State aggregate, all test-first.

Version: injected at build via -ldflags from `git describe --tags` (CI checkout
now fetch-depth:0 + --build-arg), served in /api/atlas.json, shown in the header.
No more hand-maintained version label drifting from the git tag.

Verified: build/vet/lint(0)/test green; version ldflag served correctly.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

internal/web/handler.go

@@ -11,6 +11,7 @@ import (
 	"git.d-ma.be/mathias/cad-atlas/internal/atlas"
 	"git.d-ma.be/mathias/cad-atlas/internal/cluster"
 	"git.d-ma.be/mathias/cad-atlas/internal/gitea"
+	"git.d-ma.be/mathias/cad-atlas/internal/version"
 )
 
 // atlasHTML is the Phase-A/B static shell. It fetches /api/atlas.json at load
@@ -38,6 +39,7 @@ func NewHandler() http.Handler {
 			http.Error(w, "atlas build failed", http.StatusInternalServerError)
 			return
 		}
+		a.Version = version.Value
 		ld := liveOverlay()
 		if len(ld.hosts) > 0 {
 			a.Substrate = atlas.MergeSubstrate(a.Substrate, ld.hosts)
@@ -46,10 +48,10 @@ func NewHandler() http.Handler {
 			a.NS = "Tailscale mesh · " + ld.ns
 		}
 		if ld.run != nil {
-			node := atlas.RunNode(*ld.run)
+			nodes := atlas.RunNodes(*ld.run)
 			for i := range a.Stages {
 				if a.Stages[i].Generate == "ci-jobs" {
-					a.Stages[i].Nodes = append([]atlas.Node{node}, a.Stages[i].Nodes...)
+					a.Stages[i].Nodes = nodes
 				}
 			}
 		}
@@ -63,7 +65,7 @@ func NewHandler() http.Handler {
 type liveOverlayData struct {
 	hosts []atlas.Host
 	ns    string
-	run   *atlas.Run
+	run   *atlas.RunSummary
 }
 
 // live cache: query the cluster at most once per TTL; fall back to the authored
@@ -96,7 +98,7 @@ func liveOverlay() liveOverlayData {
 		}
 	}
 	if raw, err := gitea.Runs(); err == nil {
-		if r, err := atlas.LatestRun(raw); err == nil {
+		if r, err := atlas.LatestRunJobs(raw); err == nil {
 			d.run = &r
 		}
 	}