hub v0.63.0 — system-initiated immediacy: wire poke/bump at every mutation site that lacked one

The immediate-sync arc covered only operator-initiated desired-state changes;
system-initiated mutations bumped the generation silently, so a freshly onboarded
box waited a full agent tick for state the hub had already minted (observed live at
slice-C onboarding). Wire the existing, live-proven notifiers into every system site
on the correct plane — call-site wiring only, no new mechanism.

Agent plane (poke.Notifier):
- web/pbsdr.go: PBSDRAutoProvision (the observed lag), ReissuePBSDR (also lifts the
  pbsdrheal reconciler escalation, zero reconciler changes), handlePBSDRReissue —
  each pokes AFTER the successful SetHostDesired, never on a blocked/error path.
- api: new nil-safe Poker seam (PokeHost/PokeAllHosts + SetPoker); handleAdminSetDesiredState
  pokes the target host; handleAdminSetOperatorPeer fires PokeAllHosts only when the
  fleet generation bump succeeded (fire-after-commit).
- main.go: one poke.Notifier now feeds both planes (SetPoke + SetPoker).

Controller plane (intent.Hub.Bump):
- api/reissueOnReenroll: one nil-guarded bump so a long-polling controller wakes in
  seconds instead of on the 15-min cycle.

Deliberate non-sites (unchanged): WG register (undeliverable pre-tunnel — the agent
fast-tick SECONDARY owns it), WG delete (transport removed), pbsdrheal Restage (no
generation bump → the 60s ticker is the pickup path). internal/pbsdrheal byte-unchanged.

Tests: 10 non-hollow tests (web async channel-synchronized fake sender; api synchronous
fake Poker) with explicit zero-count negatives; representative red-proofs per group
(A/B/C/D) run-fail-restored. Green: go build/vet/test all pass.

hub/internal/api/handler.go

@@ -35,6 +35,16 @@ type LatestVersionProvider interface {
 	LatestVersion() string
 }
 
+// Poker is the agent-plane immediate-sync seam (v0.63.0): satisfied by *poke.Notifier. A system-
+// initiated desired-state write here (admin-set, operator-peer bump) fires a contentless, fire-and-
+// forget nudge so the box ticks in seconds. nil = poke disabled — mutations still persist; the box
+// picks them up on its next ≤15-min cycle. Both methods are safe to call on a nil *poke.Notifier,
+// but every call site still guards with `if h.poker != nil` (the field itself may be nil).
+type Poker interface {
+	PokeHost(hostID string)
+	PokeAllHosts()
+}
+
 // Handler handles API endpoints for report ingest and customer queries.
 type Handler struct {
 	store            *store.Store
@@ -83,6 +93,12 @@ type Handler struct {
 	// notifier that GET /api/v1/wait long-polls against. nil = wait endpoint returns 503 (the box
 	// falls back to the 15-min cycle). Shared with the web server, whose intent handlers Bump it.
 	intentHub *intent.Hub
+
+	// poker (v0.63.0, Direction-2a agent-plane immediate-sync) fires a fire-and-forget nudge after a
+	// system-initiated HOST desired-state write (admin-set desired-state, operator-peer bump) so the
+	// box ticks in seconds instead of ≤15 min. Shared with the web server (same *poke.Notifier). nil
+	// = poke disabled (a no-op; the report cycle still reconciles).
+	poker Poker
 }
 
 // SetClaimEngine wires the customer-claim code engine (nil-safe everywhere it is used).
@@ -112,6 +128,12 @@ func (h *Handler) SetIntentHub(hub *intent.Hub) {
 	h.intentHub = hub
 }
 
+// SetPoker wires the agent-plane immediate-sync notifier (v0.63.0; nil-safe — an unset poker makes
+// the admin desired-state writes fire no nudge, and the box picks the change up on its next cycle).
+func (h *Handler) SetPoker(p Poker) {
+	h.poker = p
+}
+
 // New creates a new API handler.
 func New(store *store.Store, apiKey, resendAPIKey, fromEmail string, templateProvider ConfigTemplateProvider, logger *log.Logger) *Handler {
 	return &Handler{
@@ -1051,6 +1073,15 @@ func (h *Handler) reissueOnReenroll(cc *store.CustomerConfig) {
 			h.logger.Printf("[WARN] offsite re-issue on re-enroll for %s failed: %v", cc.CustomerID, err)
 		}
 	}
+	// Direction-2 (v0.63.0): wake a long-polling controller so the re-staged claim code / offsite
+	// password ride the next ACK in seconds, not on the 15-min cycle. Both legs above are
+	// best-effort; an over-bump costs one cheap wake. (On the clean-slate path the controller
+	// usually does not exist yet — its startup fetch covers that shape; a bump landing during a
+	// fresh controller's FIRST hold is recorded as baseline without firing — the known open
+	// observation, fixed later by carrying intent_gen in the report ACK. Out of scope here.)
+	if h.intentHub != nil {
+		h.intentHub.Bump(cc.CustomerID)
+	}
 }
 
 // escrowUploadRequest is the agent→hub wire shape for the OPAQUE PBS recovery-code escrow blob
@@ -1396,6 +1427,9 @@ func (h *Handler) handleAdminSetDesiredState(w http.ResponseWriter, r *http.Requ
 		return
 	}
 	h.logger.Printf("[INFO] admin-set desired-state for host %s (generation now %d, %d bytes)", pathHostID, gen, len(body))
+	if h.poker != nil {
+		h.poker.PokeHost(pathHostID) // agent-plane immediate-sync (Direction-2a): generation bumped → nudge the box now
+	}
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
 	json.NewEncoder(w).Encode(map[string]interface{}{"status": "ok", "generation": gen})

hub/internal/api/poke_seam_test.go

@@ -0,0 +1,132 @@
+package api
+
+// v0.63.0 system-initiated immediacy — the api-side agent-plane pokes (admin desired-state write,
+// operator-peer bump) and the controller-plane intent bump on clean-slate re-enroll. The api sites
+// call the Poker SYNCHRONOUSLY, so a counting fake is deterministic right after the request. The
+// negatives (error/invalid paths, nil seams) carry explicit zero-count / no-panic assertions.
+
+import (
+	"net/http"
+	"sync"
+	"testing"
+
+	"gitea.dooplex.hu/admin/felhom-hub/internal/intent"
+	"gitea.dooplex.hu/admin/felhom-hub/internal/store"
+)
+
+// fakePoker counts calls per method and records PokeHost targets. Satisfies api.Poker.
+type fakePoker struct {
+	mu        sync.Mutex
+	hostCalls []string
+	allCalls  int
+}
+
+func (f *fakePoker) PokeHost(hostID string) {
+	f.mu.Lock()
+	f.hostCalls = append(f.hostCalls, hostID)
+	f.mu.Unlock()
+}
+func (f *fakePoker) PokeAllHosts() {
+	f.mu.Lock()
+	f.allCalls++
+	f.mu.Unlock()
+}
+func (f *fakePoker) hosts() []string {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return append([]string(nil), f.hostCalls...)
+}
+func (f *fakePoker) all() int {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return f.allCalls
+}
+
+// C1 — a successful admin desired-state write pokes exactly the target host (and never the fleet);
+// the invalid-JSON path pokes nothing (fire-after-commit).
+func TestAdminSetDesiredState_PokesTargetHostOnly(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	seedHost(t, st, "h1", "c1", "HKEY1")
+	p := &fakePoker{}
+	h.SetPoker(p)
+
+	if rr := do(h, http.MethodPut, "/admin/hosts/h1/desired-state", globalKey, `{"guests":[]}`); rr.Code != http.StatusOK {
+		t.Fatalf("admin-set = %d body=%s", rr.Code, rr.Body.String())
+	}
+	if got := p.hosts(); len(got) != 1 || got[0] != "h1" {
+		t.Fatalf("PokeHost targets = %v, want [h1]", got)
+	}
+	if p.all() != 0 {
+		t.Errorf("PokeAllHosts = %d, want 0 (a single-host write is not a fleet nudge)", p.all())
+	}
+
+	// Invalid JSON is rejected at the door → NO poke.
+	before := len(p.hosts())
+	if rr := do(h, http.MethodPut, "/admin/hosts/h1/desired-state", globalKey, `not json`); rr.Code != http.StatusBadRequest {
+		t.Fatalf("malformed admin-set = %d, want 400", rr.Code)
+	}
+	if len(p.hosts()) != before {
+		t.Errorf("a poke fired on the invalid-JSON path (targets now %v)", p.hosts())
+	}
+}
+
+// C1 (nil seam) — an unset poker leaves the mutation intact and never panics.
+func TestAdminSetDesiredState_NilPokerNoPanic(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	seedHost(t, st, "h1", "c1", "HKEY1")
+	// No SetPoker — h.poker is nil.
+	if rr := do(h, http.MethodPut, "/admin/hosts/h1/desired-state", globalKey, `{"guests":[]}`); rr.Code != http.StatusOK {
+		t.Fatalf("admin-set with nil poker = %d, want 200 (mutation must still succeed)", rr.Code)
+	}
+}
+
+// C2 — a successful operator-peer write bumps EVERY host generation → exactly one fleet poke, and
+// never a single-host poke. (The BumpAllHostGenerations-error negative is assert-by-inspection: the
+// poke sits in the `else if h.poker != nil` arm of the bump result, so a bump error skips it — there
+// is no non-destructive seam to force a store bump failure in this fixture.)
+func TestAdminSetOperatorPeer_PokesFleet(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	seedHost(t, st, "h1", "c1", "HKEY1")
+	putTestEndpoint(t, h)
+	p := &fakePoker{}
+	h.SetPoker(p)
+
+	if rr := do(h, http.MethodPut, "/admin/wg/operator-peer", globalKey,
+		`{"pubkey":"`+opTestPubkey+`","assigned_ip":"10.77.0.250"}`); rr.Code != http.StatusOK {
+		t.Fatalf("set operator peer = %d body=%s", rr.Code, rr.Body.String())
+	}
+	if p.all() != 1 {
+		t.Errorf("PokeAllHosts = %d, want 1", p.all())
+	}
+	if got := p.hosts(); len(got) != 0 {
+		t.Errorf("PokeHost fired on a fleet-wide change: %v", got)
+	}
+}
+
+// Scenario D — clean-slate re-enroll bumps the controller-plane intent so a long-polling controller
+// wakes in seconds. reissueOnReenroll is synchronous, so the generation advances by return time.
+// Red-proof: remove the Part-3 bump → Generation stays 0.
+func TestReenroll_BumpsIntent(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	st.SaveCustomerConfig(&store.CustomerConfig{CustomerID: "c1", APIKey: "ckey", RetrievalPassword: "pass-phrase"})
+	hub := intent.New()
+	h.SetIntentHub(hub)
+
+	gen0 := hub.Generation("c1")
+	if rr := doEnroll(h, "c1", "pass-phrase"); rr.Code != http.StatusCreated {
+		t.Fatalf("enroll = %d body=%s", rr.Code, rr.Body.String())
+	}
+	if gen := hub.Generation("c1"); gen <= gen0 {
+		t.Fatalf("intent generation = %d, want > %d (re-enroll must bump)", gen, gen0)
+	}
+}
+
+// Scenario D (nil seam) — with no intent hub wired, enroll still succeeds and never panics.
+func TestReenroll_NilIntentHubNoPanic(t *testing.T) {
+	h, st, _ := newTestHandler(t)
+	st.SaveCustomerConfig(&store.CustomerConfig{CustomerID: "c1", APIKey: "ckey", RetrievalPassword: "pass-phrase"})
+	// No SetIntentHub — h.intentHub is nil.
+	if rr := doEnroll(h, "c1", "pass-phrase"); rr.Code != http.StatusCreated {
+		t.Fatalf("enroll with nil intent hub = %d, want 201", rr.Code)
+	}
+}

hub/internal/api/wg.go

@@ -504,6 +504,8 @@ func (h *Handler) handleAdminSetOperatorPeer(w http.ResponseWriter, r *http.Requ
 	bumped, berr := h.store.BumpAllHostGenerations()
 	if berr != nil {
 		h.logger.Printf("[WARN] operator peer set but generation bump failed: %v", berr)
+	} else if h.poker != nil {
+		h.poker.PokeAllHosts() // agent-plane immediate-sync (Direction-2a): every host generation moved → fleet nudge (fire-after-commit)
 	}
 	h.logger.Printf("[INFO] operator OOB peer set: %s -> %s/32 (sync=%s, %d host generations bumped)",
 		req.Pubkey, req.AssignedIP, syncStatus, bumped)

hub/internal/web/pbsdr.go

@@ -310,6 +310,7 @@ func (s *Server) PBSDRAutoProvision(ctx context.Context, customerID string) {
 		return
 	}
 	s.logger.Printf("[INFO] pbsdr auto-provisioned for %s on WG registration (hands-free cascade)", customerID)
+	s.poke.PokeHost(host.HostID) // freshly auto-provisioned + generation bumped → nudge the box now (the observed slice-C lag)
 }
 
 // ReissuePBSDR re-keys the customer's ep0 PBS token and re-arms the agent — the non-HTTP core shared
@@ -357,6 +358,7 @@ func (s *Server) ReissuePBSDR(ctx context.Context, customerID string) error {
 		return fmt.Errorf("pbsdr reissue for %s: descriptor bump: %w", customerID, err)
 	}
 	s.logger.Printf("[INFO] pbsdr credentials re-issued for %s (host %s; fresh consume-once secret stored, withheld from logs)", customerID, host.HostID)
+	s.poke.PokeHost(host.HostID) // agent-plane immediate-sync (Direction-2a): re-consume signal lands in seconds (also the pbsdrheal escalation path)
 	return nil
 }
 
@@ -412,6 +414,7 @@ func (s *Server) handlePBSDRReissue(w http.ResponseWriter, r *http.Request, cust
 		return
 	}
 	s.logger.Printf("[INFO] pbsdr credentials re-issued for %s (host %s; fresh consume-once secret stored)", customerID, host.HostID)
+	s.poke.PokeHost(host.HostID) // agent-plane immediate-sync (Direction-2a): re-consume signal lands in seconds
 	http.Redirect(w, r, "/customers/"+customerID+"?flash=pbsdr_reissued#tab=edit", http.StatusSeeOther)
 }
 

hub/internal/web/pbsdr_poke_test.go

@@ -0,0 +1,197 @@
+package web
+
+// v0.63.0 system-initiated immediacy — the agent-plane pokes wired into the pbsdr mutation sites.
+// These assert the EFFECT (the resolved WG /32 received a nudge), synchronize on a channel with a
+// bounded timeout (never sleep-poll), and carry explicit zero-count negatives on the error/blocked
+// paths. The notifier is a REAL poke.Notifier built over the test store + a channel-carrying fake
+// sender (structural satisfaction of poke's unexported sender seam — the value is passed, the type
+// is never named), exactly as main.go builds it.
+
+import (
+	"context"
+	"errors"
+	"io"
+	"log"
+	"net/http/httptest"
+	"net/url"
+	"sync"
+	"testing"
+	"time"
+
+	"gitea.dooplex.hu/admin/felhom-hub/internal/poke"
+	"gitea.dooplex.hu/admin/felhom-hub/internal/store"
+	"gitea.dooplex.hu/admin/felhom-hub/internal/tenantsync"
+)
+
+func quietWebLogger() *log.Logger { return log.New(io.Discard, "", 0) }
+
+// chanSender is a fake poke sender: it records every target and, for async assertions, publishes
+// each one on a buffered channel so a test can select-with-timeout instead of sleeping.
+type chanSender struct {
+	mu      sync.Mutex
+	targets []string
+	ch      chan string
+	err     error
+}
+
+func newChanSender() *chanSender { return &chanSender{ch: make(chan string, 8)} }
+
+func (f *chanSender) Poke(_ context.Context, boxWGIP string) error {
+	f.mu.Lock()
+	f.targets = append(f.targets, boxWGIP)
+	f.mu.Unlock()
+	select {
+	case f.ch <- boxWGIP:
+	default:
+	}
+	return f.err
+}
+
+func (f *chanSender) count() int {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return len(f.targets)
+}
+
+// wirePoke builds a real notifier over the test store + fake sender and installs it on the server.
+func wirePoke(s *Server, st *store.Store, snd *chanSender) {
+	s.SetPoke(poke.NewNotifier(st, snd, quietWebLogger()))
+}
+
+// expectPoke asserts exactly one poke to wantIP arrives within the bound, and none trails it.
+func expectPoke(t *testing.T, snd *chanSender, wantIP string) {
+	t.Helper()
+	select {
+	case got := <-snd.ch:
+		if got != wantIP {
+			t.Fatalf("poke target = %q, want %q", got, wantIP)
+		}
+	case <-time.After(2 * time.Second):
+		t.Fatalf("no poke within 2s (want one to %s)", wantIP)
+	}
+	// No second poke should follow (a short settle window; the send is buffered so a stray fires fast).
+	select {
+	case extra := <-snd.ch:
+		t.Fatalf("a second, unexpected poke fired to %q", extra)
+	case <-time.After(150 * time.Millisecond):
+	}
+}
+
+// expectNoPoke asserts no poke arrives within a bounded settle window (the negative-path contract).
+func expectNoPoke(t *testing.T, snd *chanSender) {
+	t.Helper()
+	select {
+	case got := <-snd.ch:
+		t.Fatalf("a poke fired to %q on a path that must not poke", got)
+	case <-time.After(300 * time.Millisecond):
+	}
+	if n := snd.count(); n != 0 {
+		t.Fatalf("sender received %d pokes, want 0", n)
+	}
+}
+
+func peerIP(t *testing.T, st *store.Store, hostID string) string {
+	t.Helper()
+	p, err := st.GetWGPeerForHost(hostID)
+	if err != nil || p == nil {
+		t.Fatalf("peer for %s: %v", hostID, err)
+	}
+	return p.AssignedIP
+}
+
+// Scenario A — the observed slice-C lag: PBSDRAutoProvision pokes the box after a hands-free
+// provision. Red-proof: remove the 1.1 insertion → expectPoke times out.
+func TestPBSDR_AutoProvisionPokes(t *testing.T) {
+	fake := &fakeTenancy{secret: "AUTO-SECRET"}
+	s, st, _ := newPBSDRServer(t, fake)
+	if err := st.RemoveWGPeer("PETIPUBKEY"); err != nil {
+		t.Fatalf("remove seed peer: %v", err)
+	}
+	// Flag ON while the peer is missing → stored intent, no provision (and so no poke path).
+	postUpdate(t, s, url.Values{"dr_tier": {"on"}})
+
+	// The agent registers its WG key; the hook fires the atom → provision succeeds → poke.
+	if _, _, err := st.RegisterWGPeerForHost("peti-01", "PETIPUBKEY"); err != nil {
+		t.Fatalf("register peer: %v", err)
+	}
+	snd := newChanSender()
+	wirePoke(s, st, snd)
+	wantIP := peerIP(t, st, "peti-01")
+
+	s.PBSDRAutoProvision(context.Background(), "peti")
+	expectPoke(t, snd, wantIP)
+}
+
+// Scenario A (negative) — a blocked precondition (no WG peer) mints nothing, so NO poke fires.
+func TestPBSDR_AutoProvisionBlockedDoesNotPoke(t *testing.T) {
+	fake := &fakeTenancy{secret: "S"}
+	s, st, _ := newPBSDRServer(t, fake)
+	if err := st.RemoveWGPeer("PETIPUBKEY"); err != nil {
+		t.Fatalf("remove seed peer: %v", err)
+	}
+	postUpdate(t, s, url.Values{"dr_tier": {"on"}})
+
+	snd := newChanSender()
+	wirePoke(s, st, snd)
+	s.PBSDRAutoProvision(context.Background(), "peti") // peer still absent → blocked, no mint
+	expectNoPoke(t, snd)
+}
+
+// Scenario B1 — ReissuePBSDR (the reconciler-escalation core) pokes after the descriptor bump.
+// Red-proof: remove the 1.2 insertion → expectPoke times out.
+func TestPBSDR_ReissueCorePokes(t *testing.T) {
+	fake := &fakeTenancy{secret: "OLD"}
+	s, st, _ := newPBSDRServer(t, fake) // poke NOT wired yet → the provision below fires none
+	postUpdate(t, s, url.Values{"dr_tier": {"on"}})
+	st.ConsumeHostPBSSecret("peti-01")
+
+	snd := newChanSender()
+	wirePoke(s, st, snd)
+	wantIP := peerIP(t, st, "peti-01")
+
+	fake.secret = "FRESH"
+	if err := s.ReissuePBSDR(context.Background(), "peti"); err != nil {
+		t.Fatalf("ReissuePBSDR: %v", err)
+	}
+	expectPoke(t, snd, wantIP)
+}
+
+// Scenario B (negative) — a reissue that FAILS (tenantsync error) never reaches SetHostDesired,
+// so NO poke fires (fire-after-commit).
+func TestPBSDR_ReissueCoreErrorDoesNotPoke(t *testing.T) {
+	fake := &fakeTenancy{secret: "OLD"}
+	s, st, _ := newPBSDRServer(t, fake)
+	postUpdate(t, s, url.Values{"dr_tier": {"on"}})
+
+	snd := newChanSender()
+	wirePoke(s, st, snd)
+
+	fake.err = errors.New("ssh boom")
+	if err := s.ReissuePBSDR(context.Background(), "peti"); err == nil {
+		t.Fatal("ReissuePBSDR returned nil on a tenantsync error")
+	}
+	expectNoPoke(t, snd)
+}
+
+// Scenario B2 — the operator button (handlePBSDRReissue) pokes after the descriptor bump.
+func TestPBSDR_HandleReissuePokes(t *testing.T) {
+	fake := &fakeTenancy{secret: "OLD"}
+	s, st, _ := newPBSDRServer(t, fake)
+	postUpdate(t, s, url.Values{"dr_tier": {"on"}})
+	st.ConsumeHostPBSSecret("peti-01")
+
+	snd := newChanSender()
+	wirePoke(s, st, snd)
+	wantIP := peerIP(t, st, "peti-01")
+
+	fake.secret = "FRESH"
+	req := httptest.NewRequest("POST", "/configs/peti/pbsdr-reissue", nil)
+	rr := httptest.NewRecorder()
+	s.handlePBSDRReissue(rr, req, "peti")
+	if rr.Code != 303 {
+		t.Fatalf("reissue = %d (%s), want 303", rr.Code, rr.Body.String())
+	}
+	expectPoke(t, snd, wantIP)
+}
+
+var _ = tenantsync.ErrTokenExists // keep the tenantsync import stable across edits