diff --git a/cmd/control-plane/main_test.go b/cmd/control-plane/main_test.go
index e28f12d..7a8ed2b 100644
--- a/cmd/control-plane/main_test.go
+++ b/cmd/control-plane/main_test.go
@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"context"
+	"database/sql"
 	"encoding/json"
 	"errors"
 	"io"
@@ -17,6 +18,8 @@ import (
 	"testing"
 	"time"
 
+	"git.ipao.vip/rogee/creator-hub/internal/hub"
+	"git.ipao.vip/rogee/creator-hub/internal/phasea"
 	"github.com/gofiber/fiber/v3"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
@@ -97,6 +100,78 @@ func TestPhaseAAccountRequestRejectsSecretsAndUnknownFields(t *testing.T) {
 	}
 }
 
+func TestPhaseAAccountHTTPWorkflowRedactsSecrets(t *testing.T) {
+	databaseURL := os.Getenv("CREATORHUB_POSTGRES_TEST_URL")
+	if databaseURL == "" {
+		t.Skip("set CREATORHUB_POSTGRES_TEST_URL to run PostgreSQL integration coverage")
+	}
+	ctx := context.Background()
+	databaseURL = isolatedControlPlaneDatabaseURL(t, databaseURL)
+	store, err := phasea.Open(ctx, databaseURL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = store.Close() })
+	hubStore, err := hub.Open(ctx, databaseURL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := hubStore.Close(); err != nil {
+		t.Fatal(err)
+	}
+
+	app := fiber.New()
+	registerPhaseA(app, store, nil)
+	credentialKey := "creatorhub/phase-http-secret"
+	accountBody := `{"id":"account-http","platform":"mock","platform_account_key":"phase-http","authorization_kind":"owned","credential_reference":{"id":"credential-http","provider":"os_keyring","key":"` + credentialKey + `"}}`
+	request := func(method, path, body string, wantStatus int) *httptest.ResponseRecorder {
+		t.Helper()
+		response := do(app, method, path, body)
+		if response.Code != wantStatus {
+			t.Fatalf("%s %s returned %d, want %d: %s", method, path, response.Code, wantStatus, response.Body.String())
+		}
+		if strings.Contains(response.Body.String(), credentialKey) {
+			t.Fatalf("%s %s leaked credential key: %s", method, path, response.Body.String())
+		}
+		return response
+	}
+
+	created := request(http.MethodPost, "/api/phase-a/accounts", accountBody, http.StatusCreated)
+	var account phasea.Account
+	if err := json.Unmarshal(created.Body.Bytes(), &account); err != nil || account.ID != "account-http" || account.RuntimeStatus != "paused" {
+		t.Fatalf("unexpected account response: %#v err=%v", account, err)
+	}
+	request(http.MethodPost, "/api/phase-a/accounts", accountBody, http.StatusConflict)
+	request(http.MethodPost, "/api/phase-a/accounts", strings.TrimSuffix(accountBody, "}")+`,"password":"`+credentialKey+`"}`, http.StatusBadRequest)
+	request(http.MethodGet, "/api/phase-a/accounts", "", http.StatusOK)
+	request(http.MethodGet, "/api/phase-a/accounts/account-http", "", http.StatusOK)
+
+	db, err := sql.Open("pgx", databaseURL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+	if _, err := db.ExecContext(ctx, `
+		INSERT INTO gateway (name, endpoint, token) VALUES ('phase-http', 'http://127.0.0.1:8081', 'phase-http-gateway-token');
+		INSERT INTO browser_image (version, image_ref) VALUES ('1', 'example/browser:1');
+		INSERT INTO browser_env (alias, name, gateway_name, image_version, fingerprint)
+			VALUES ('account-http', 'Phase HTTP', 'phase-http', '1', '{"seed":1}');
+		INSERT INTO network_exit (id, protocol, host, port, health_status)
+			VALUES ('exit-http', 'socks5', '127.0.0.1', 1080, 'healthy');
+		INSERT INTO environment_binding (id, account_id, browser_env_alias, network_exit_id)
+			VALUES ('binding-http', 'account-http', 'account-http', 'exit-http')`); err != nil {
+		t.Fatal(err)
+	}
+	request(http.MethodPost, "/api/phase-a/accounts/account-http/resume", "", http.StatusNoContent)
+	request(http.MethodPost, "/api/phase-a/accounts/account-http/pause", "", http.StatusNoContent)
+	request(http.MethodPost, "/api/phase-a/accounts/account-http/resume", "", http.StatusNoContent)
+	request(http.MethodPost, "/api/phase-a/accounts/account-http/revoke", "", http.StatusNoContent)
+	blocked := request(http.MethodPost, "/api/phase-a/accounts/account-http/resume", "", http.StatusConflict)
+	if !strings.Contains(blocked.Body.String(), `"reason_code":"account_revoked"`) {
+		t.Fatalf("revoked resume did not return a stable conflict reason: %s", blocked.Body.String())
+	}
+}
+
 func TestPhaseAErrorRedactsInternalDetails(t *testing.T) {
 	app := fiber.New()
 	app.Get("/", func(c fiber.Ctx) error {
diff --git a/internal/hub/environment.go b/internal/hub/environment.go
index ccf2e76..77e288f 100644
--- a/internal/hub/environment.go
+++ b/internal/hub/environment.go
@@ -472,6 +472,27 @@ func (s *Store) GetEnvironmentContextForAccount(ctx context.Context, accountID s
 	return s.GetEnvironmentContext(ctx, alias)
 }
 
+func releaseExpiredRuntime(ctx context.Context, tx *sql.Tx, bindingID string) error {
+	var accountID, alias, runtimeInstanceID string
+	var exitID sql.NullString
+	var bindingVersion int64
+	err := tx.QueryRowContext(ctx, `
+		UPDATE runtime_instance runtime SET released_at = now()
+		FROM environment_binding binding
+		WHERE binding.id = $1 AND runtime.binding_id = binding.id
+			AND runtime.released_at IS NULL AND runtime.lease_until <= now()
+		RETURNING runtime.account_id, binding.browser_env_alias, binding.network_exit_id,
+			runtime.id, runtime.binding_version`, bindingID).
+		Scan(&accountID, &alias, &exitID, &runtimeInstanceID, &bindingVersion)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil
+	}
+	if err != nil {
+		return err
+	}
+	return appendRuntimeAudit(ctx, tx, "runtime_released", accountID, alias, exitID.String, runtimeInstanceID, bindingVersion)
+}
+
 func validateEnvironmentRebind(ctx context.Context, tx *sql.Tx, alias, exitID string, expectedBindingVersion int64) (string, string, error) {
 	var accountID, bindingID string
 	var bindingVersion int64
@@ -492,9 +513,7 @@ func validateEnvironmentRebind(ctx context.Context, tx *sql.Tx, alias, exitID st
 	if bindingVersion != expectedBindingVersion {
 		return "", "", ErrConflict
 	}
-	if _, err := tx.ExecContext(ctx, `
-		UPDATE runtime_instance SET released_at = now()
-		WHERE binding_id = $1 AND released_at IS NULL AND lease_until <= now()`, bindingID); err != nil {
+	if err := releaseExpiredRuntime(ctx, tx, bindingID); err != nil {
 		return "", "", errors.New("expire runtime before rebind")
 	}
 	var allowed bool
@@ -555,12 +574,16 @@ func (s *Store) RebindEnvironment(ctx context.Context, alias, exitID, runtimeID
 		return EnvironmentContext{}, errors.New("version rebound account")
 	}
 	if runtimeID != "" {
+		runtimeInstanceID := "runtime-" + newHubID()
 		if _, err := tx.ExecContext(ctx, `
 			INSERT INTO runtime_instance (id, account_id, binding_id, binding_version, runtime_id, network_id, lease_until)
 			VALUES ($1, $2, $3, $4, $5, NULLIF($6, ''), now() + interval '1 minute')`,
-			"runtime-"+newHubID(), accountID, bindingID, expectedBindingVersion+1, runtimeID, networkID); err != nil {
+			runtimeInstanceID, accountID, bindingID, expectedBindingVersion+1, runtimeID, networkID); err != nil {
 			return EnvironmentContext{}, publicDatabaseError(err)
 		}
+		if err := appendRuntimeAudit(ctx, tx, "runtime_bound", accountID, alias, exitID, runtimeInstanceID, expectedBindingVersion+1); err != nil {
+			return EnvironmentContext{}, err
+		}
 	}
 	if err := commitHub(tx); err != nil {
 		return EnvironmentContext{}, err
@@ -599,9 +622,7 @@ func (s *Store) ActivateRuntime(ctx context.Context, alias, runtimeID string, bi
 		currentBindingVersion != bindingVersion || currentExitID != exitID {
 		return EnvironmentContext{}, ErrConflict
 	}
-	if _, err := tx.ExecContext(ctx, `
-		UPDATE runtime_instance SET released_at = now()
-		WHERE binding_id = $1 AND released_at IS NULL AND lease_until <= now()`, bindingID); err != nil {
+	if err := releaseExpiredRuntime(ctx, tx, bindingID); err != nil {
 		return EnvironmentContext{}, errors.New("expire runtime before activation")
 	}
 	var existingInstanceID, existingRuntimeID, existingNetworkID string
@@ -615,12 +636,16 @@ func (s *Store) ActivateRuntime(ctx context.Context, alias, runtimeID string, bi
 		return EnvironmentContext{}, ErrConflict
 	}
 	if existingInstanceID == "" {
+		existingInstanceID = "runtime-" + newHubID()
 		if _, err := tx.ExecContext(ctx, `
 			INSERT INTO runtime_instance (id, account_id, binding_id, binding_version, runtime_id, network_id, lease_until)
 			VALUES ($1, $2, $3, $4, $5, NULLIF($6, ''), now() + interval '1 minute')`,
-			"runtime-"+newHubID(), accountID, bindingID, bindingVersion, runtimeID, networkID); err != nil {
+			existingInstanceID, accountID, bindingID, bindingVersion, runtimeID, networkID); err != nil {
 			return EnvironmentContext{}, publicDatabaseError(err)
 		}
+		if err := appendRuntimeAudit(ctx, tx, "runtime_bound", accountID, alias, exitID, existingInstanceID, bindingVersion); err != nil {
+			return EnvironmentContext{}, err
+		}
 	} else if _, err := tx.ExecContext(ctx, `UPDATE runtime_instance SET lease_until = now() + interval '1 minute' WHERE id = $1`, existingInstanceID); err != nil {
 		return EnvironmentContext{}, errors.New("renew environment runtime")
 	}
@@ -638,20 +663,33 @@ func (s *Store) ReleaseRuntime(ctx context.Context, environment EnvironmentConte
 	if environment.RuntimeInstanceID == "" {
 		return nil
 	}
-	result, err := s.db.ExecContext(ctx, `
+	tx, err := s.db.BeginTx(ctx, nil)
+	if err != nil {
+		return errors.New("begin runtime release")
+	}
+	defer tx.Rollback()
+	var accountID, alias, runtimeInstanceID string
+	var exitID sql.NullString
+	var bindingVersion int64
+	err = tx.QueryRowContext(ctx, `
 		UPDATE runtime_instance runtime SET released_at = now()
 		FROM environment_binding binding
 		WHERE binding.browser_env_alias = $1 AND binding.id = $2 AND binding.version = $3
 			AND runtime.binding_id = binding.id AND runtime.binding_version = binding.version
-			AND runtime.id = $4 AND runtime.released_at IS NULL`, environment.Alias, environment.BindingID,
-		environment.BindingVersion, environment.RuntimeInstanceID)
+			AND runtime.id = $4 AND runtime.released_at IS NULL
+		RETURNING runtime.account_id, binding.browser_env_alias, binding.network_exit_id, runtime.id, runtime.binding_version`,
+		environment.Alias, environment.BindingID, environment.BindingVersion, environment.RuntimeInstanceID).
+		Scan(&accountID, &alias, &exitID, &runtimeInstanceID, &bindingVersion)
+	if errors.Is(err, sql.ErrNoRows) {
+		return ErrConflict
+	}
 	if err != nil {
 		return errors.New("release environment runtime")
 	}
-	if affected, err := result.RowsAffected(); err != nil || affected != 1 {
-		return ErrConflict
+	if err := appendRuntimeAudit(ctx, tx, "runtime_released", accountID, alias, exitID.String, runtimeInstanceID, bindingVersion); err != nil {
+		return err
 	}
-	return nil
+	return commitHub(tx)
 }
 
 func (s *Store) SetRuntimeCleanupPending(ctx context.Context, environment EnvironmentContext, pending bool) error {
@@ -669,15 +707,19 @@ func (s *Store) SetRuntimeCleanupPending(ctx context.Context, environment Enviro
 	}
 	defer tx.Rollback()
 	var currentPending bool
+	var accountID, alias string
+	var exitID sql.NullString
 	var cleanupBindingVersion sql.NullInt64
 	var cleanupInstanceID, cleanupRuntimeID, cleanupNetworkID sql.NullString
 	if err := tx.QueryRowContext(ctx, `
 		SELECT runtime_cleanup_pending, runtime_cleanup_binding_version,
-			runtime_cleanup_instance_id, runtime_cleanup_runtime_id, runtime_cleanup_network_id
+			runtime_cleanup_instance_id, runtime_cleanup_runtime_id, runtime_cleanup_network_id,
+			account_id, browser_env_alias, network_exit_id
 		FROM environment_binding
 		WHERE browser_env_alias = $1 AND id = $2 AND version = $3 FOR UPDATE`, environment.Alias,
 		environment.BindingID, environment.BindingVersion).
-		Scan(&currentPending, &cleanupBindingVersion, &cleanupInstanceID, &cleanupRuntimeID, &cleanupNetworkID); errors.Is(err, sql.ErrNoRows) {
+		Scan(&currentPending, &cleanupBindingVersion, &cleanupInstanceID, &cleanupRuntimeID, &cleanupNetworkID,
+			&accountID, &alias, &exitID); errors.Is(err, sql.ErrNoRows) {
 		return ErrConflict
 	} else if err != nil {
 		return publicDatabaseError(err)
@@ -719,6 +761,9 @@ func (s *Store) SetRuntimeCleanupPending(ctx context.Context, environment Enviro
 			if affected, err := result.RowsAffected(); err != nil || affected != 1 {
 				return ErrConflict
 			}
+			if err := appendRuntimeAudit(ctx, tx, "runtime_released", accountID, alias, exitID.String, runtimeInstanceID, environment.BindingVersion); err != nil {
+				return err
+			}
 		}
 	}
 	if pending {
@@ -741,6 +786,18 @@ func (s *Store) SetRuntimeCleanupPending(ctx context.Context, environment Enviro
 	return commitHub(tx)
 }
 
+func appendRuntimeAudit(ctx context.Context, tx *sql.Tx, eventType, accountID, alias, exitID, runtimeInstanceID string, bindingVersion int64) error {
+	_, err := tx.ExecContext(ctx, `
+		INSERT INTO audit_event
+			(event_type, account_id, browser_env_alias, network_exit_id, runtime_instance_id, binding_version, actor, reason_code)
+		VALUES ($1, $2, $3, NULLIF($4, ''), $5, $6, 'local-user', $1)`,
+		eventType, accountID, alias, exitID, runtimeInstanceID, bindingVersion)
+	if err != nil {
+		return errors.New("append runtime audit event")
+	}
+	return nil
+}
+
 func (s *Store) AppendEnvironmentAction(ctx context.Context, eventType string, action EnvironmentAction) error {
 	if (eventType != "environment_action_requested" && eventType != "environment_action_finished") ||
 		!exitIDPattern.MatchString(action.OperationID) || action.Action == "" || action.ReasonCode == "" ||
diff --git a/internal/hub/migration_test.go b/internal/hub/migration_test.go
index d9cf3c9..9bd30cd 100644
--- a/internal/hub/migration_test.go
+++ b/internal/hub/migration_test.go
@@ -292,10 +292,10 @@ func isolatedDatabaseURL(t *testing.T, databaseURL string) string {
 	return parsed.String()
 }
 
-func assertDatabaseCount(t *testing.T, db *sql.DB, query string, want int) {
+func assertDatabaseCount(t *testing.T, db *sql.DB, query string, want int, args ...any) {
 	t.Helper()
 	var got int
-	if err := db.QueryRow(query).Scan(&got); err != nil || got != want {
+	if err := db.QueryRow(query, args...).Scan(&got); err != nil || got != want {
 		t.Fatalf("count mismatch: got=%d want=%d err=%v query=%s", got, want, err, query)
 	}
 }
diff --git a/internal/hub/store_test.go b/internal/hub/store_test.go
index 08c6cde..d003534 100644
--- a/internal/hub/store_test.go
+++ b/internal/hub/store_test.go
@@ -311,6 +311,10 @@ func TestNetworkExitBindingRuntimeAndAuditWorkflow(t *testing.T) {
 	if err != nil || active.RuntimeInstanceID == "" {
 		t.Fatalf("activate runtime: %#v err=%v", active, err)
 	}
+	assertDatabaseCount(t, store.db, `SELECT count(*) FROM audit_event WHERE event_type = 'runtime_bound'
+		AND reason_code = 'runtime_bound' AND account_id = 'account-a' AND browser_env_alias = 'environment-a'
+		AND network_exit_id = $1 AND runtime_instance_id = $2 AND binding_version = $3 AND details = '{}'::jsonb`,
+		1, active.Exit.ID, active.RuntimeInstanceID, active.BindingVersion)
 
 	second, err := store.CreateNetworkExit(ctx, NetworkExit{Protocol: "http", Host: "proxy-2.example", Port: 8080}, "")
 	if err != nil {
@@ -362,12 +366,27 @@ func TestNetworkExitBindingRuntimeAndAuditWorkflow(t *testing.T) {
 	if err != nil || rebound.Exit.ID != second.ID || rebound.BindingVersion != 2 {
 		t.Fatalf("expired runtime must be transactionally released before rebind: %#v err=%v", rebound, err)
 	}
+	assertDatabaseCount(t, store.db, `SELECT count(*) FROM audit_event WHERE event_type = 'runtime_released'
+		AND reason_code = 'runtime_released' AND account_id = 'account-a' AND browser_env_alias = 'environment-a'
+		AND network_exit_id = $1 AND runtime_instance_id = $2 AND binding_version = $3 AND details = '{}'::jsonb`,
+		1, active.Exit.ID, active.RuntimeInstanceID, active.BindingVersion)
 	if _, err := store.db.ExecContext(ctx, `UPDATE social_account SET status = 'active' WHERE id = 'account-a'`); err != nil {
 		t.Fatal(err)
 	}
-	if _, err := store.ActivateRuntime(ctx, env.Alias, "same-exit-container", rebound.BindingVersion, rebound.Exit.ID, "network-same-exit"); err != nil {
-		t.Fatalf("activate runtime before same-exit rebind: %v", err)
+	expiredBeforeActivation, err := store.ActivateRuntime(ctx, env.Alias, "expired-container", rebound.BindingVersion, rebound.Exit.ID, "network-expired")
+	if err != nil {
+		t.Fatalf("activate runtime to expire: %v", err)
 	}
+	if _, err := store.db.ExecContext(ctx, `UPDATE runtime_instance SET lease_until = now() - interval '1 second' WHERE id = $1`, expiredBeforeActivation.RuntimeInstanceID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := store.ActivateRuntime(ctx, env.Alias, "same-exit-container", rebound.BindingVersion, rebound.Exit.ID, "network-same-exit"); err != nil {
+		t.Fatalf("replace expired runtime before same-exit rebind: %v", err)
+	}
+	assertDatabaseCount(t, store.db, `SELECT count(*) FROM audit_event WHERE event_type = 'runtime_released'
+		AND reason_code = 'runtime_released' AND account_id = 'account-a' AND browser_env_alias = 'environment-a'
+		AND network_exit_id = $1 AND runtime_instance_id = $2 AND binding_version = $3 AND details = '{}'::jsonb`,
+		1, expiredBeforeActivation.Exit.ID, expiredBeforeActivation.RuntimeInstanceID, expiredBeforeActivation.BindingVersion)
 	if _, err := store.db.ExecContext(ctx, `UPDATE social_account SET status = 'paused' WHERE id = 'account-a'`); err != nil {
 		t.Fatal(err)
 	}
@@ -381,6 +400,10 @@ func TestNetworkExitBindingRuntimeAndAuditWorkflow(t *testing.T) {
 	if err := store.ReleaseRuntime(ctx, active); err != nil {
 		t.Fatal(err)
 	}
+	assertDatabaseCount(t, store.db, `SELECT count(*) FROM audit_event WHERE event_type = 'runtime_released'
+		AND reason_code = 'runtime_released' AND account_id = 'account-a' AND browser_env_alias = 'environment-a'
+		AND network_exit_id = $1 AND runtime_instance_id = $2 AND binding_version = $3 AND details = '{}'::jsonb`,
+		1, active.Exit.ID, active.RuntimeInstanceID, active.BindingVersion)
 	rebound, err = store.RebindEnvironment(ctx, env.Alias, second.ID, "rebound-container", rebound.BindingVersion)
 	if err != nil || rebound.BindingVersion != 3 || rebound.RuntimeID != "rebound-container" {
 		t.Fatalf("same-exit rebind must atomically CAS the binding and runtime: %#v err=%v", rebound, err)
@@ -399,6 +422,9 @@ func TestNetworkExitBindingRuntimeAndAuditWorkflow(t *testing.T) {
 	if err := store.SetRuntimeCleanupPending(ctx, cleanup, true); err != nil {
 		t.Fatalf("set generation cleanup pending: %v", err)
 	}
+	assertDatabaseCount(t, store.db, `SELECT count(*) FROM audit_event WHERE event_type = 'runtime_released'
+		AND browser_env_alias = 'environment-a' AND network_exit_id = $1 AND runtime_instance_id = $2 AND binding_version = $3`,
+		1, current.Exit.ID, current.RuntimeInstanceID, current.BindingVersion)
 	wrongCleanup := cleanup
 	wrongCleanup.RuntimeCleanupRuntimeID = "other-container"
 	if err := store.SetRuntimeCleanupPending(ctx, wrongCleanup, false); !errors.Is(err, ErrConflict) {