implemented unified operational timeline. situational awareness 'what changed before it broke?'

internal/api/router.go

@@ -59,6 +59,7 @@ func New(cfg *config.Config, engine *xorm.Engine, store sessions.Store, bus even
 	artifactH   := handlers.NewArtifactHandler(engine, artifactRoot)
 	runnerH     := handlers.NewRunnerHandler(engine)
 	envH        := handlers.NewEnvironmentHandler(engine, bus)
+	timelineH   := handlers.NewTimelineHandler(engine, cfg.RepoRoot)
 
 	// ── Git smart-HTTP transport ───────────────────────────────────────────────
 	// Regex constraint ensures only *.git paths match, so asset/SPA URLs
@@ -206,6 +207,7 @@ func New(cfg *config.Config, engine *xorm.Engine, store sessions.Store, bus even
 					r.With(csrf).Put("/default-description", prSettingsH.UpdateDefaultDescription)
 				r.Get("/excluded-files", prSettingsH.GetExcludedFiles)
 				r.With(csrf).Put("/excluded-files", prSettingsH.UpdateExcludedFiles)
+				r.Get("/timeline", timelineH.GetTimeline)
 				r.Get("/lfs-settings", lfsH.Get)
 				r.With(csrf).Put("/lfs-settings", lfsH.Update)
 				r.Route("/environments", func(r chi.Router) {