fix: restore telemetry ops inventory and stable meter-event tests

Author: OpenAI Codex

accrue/guides/telemetry.md

@@ -66,6 +66,7 @@ they correspond to — they are idempotent under webhook replay via the
 | `[:accrue, :ops, :discount_mapping_invalid]` | `count` | `mapping_id`, `code`, `discount_id`, `reason`, `operation_id` | `Accrue.Billing.SubscriptionActions` |
 | `[:accrue, :ops, :incomplete_expired]` | `count` | `subscription_id` | `Accrue.Telemetry.Ops` |
 | `[:accrue, :ops, :charge_failed]` | `count` | `charge_id`, `customer_id`, `failure_code` | `Accrue.Telemetry.Ops` |
+| `[:accrue, :ops, :customer_projection_sync_failed]` | `count` | `customer_id`, `processor`, `processor_id`, `operation_id`, `changed_fields`, `failure_kind` | `Accrue.Billing` |
 | `[:accrue, :ops, :meter_reporting_failed]` | `count` | `meter_event_id`, `event_name`, `source` (`:reconciler \| :webhook \| :sync`) | `Accrue.Webhook.DefaultHandler` / `Accrue.Billing.MeterEventActions` / `Accrue.Jobs.MeterEventsReconciler` |
 | `[:accrue, :ops, :metered_renewal_stale_repaired]` | `count` | `source` (`:reconciler`), `processor`, `subscription_id`, `metered_renewal_id` | `Accrue.Jobs.MeteredRenewalReconciler` |
 | `[:accrue, :ops, :metered_missing_definition]` | `count` | `processor`, `subscription_id`, `metered_renewal_id`, `unmatched_event_count` | `Accrue.Billing.MeteredRenewalInvoice` |

accrue/lib/accrue/telemetry/ops.ex

@@ -14,6 +14,7 @@ defmodule Accrue.Telemetry.Ops do
       [:accrue, :ops, :discount_mapping_invalid]
       [:accrue, :ops, :incomplete_expired]
       [:accrue, :ops, :charge_failed]
+      [:accrue, :ops, :customer_projection_sync_failed]
       [:accrue, :ops, :meter_reporting_failed]
       [:accrue, :ops, :metered_renewal_stale_repaired]
       [:accrue, :ops, :metered_missing_definition]

accrue/test/accrue/billing/meter_event_actions_test.exs

@@ -120,7 +120,10 @@ defmodule Accrue.Billing.MeterEventsReportUsageTest do
       Fake.scripted_response(:report_meter_event, {:error, err})
 
       :ok = Accrue.Actor.put_operation_id("op_meter_idem_fail")
-      ts = ~U[2026-04-10 12:00:00.000000Z]
+      ts =
+        DateTime.utc_now()
+        |> DateTime.add(-3 * 86_400, :second)
+        |> DateTime.truncate(:second)
       opts = [operation_id: "op_meter_idem_fail", timestamp: ts, value: 1]
 
       test_pid = self()
@@ -156,7 +159,10 @@ defmodule Accrue.Billing.MeterEventsReportUsageTest do
       Fake.scripted_response(:report_meter_event, {:error, err})
 
       :ok = Accrue.Actor.put_operation_id("op_meter_bang_idem")
-      ts = ~U[2026-04-11 12:00:00.000000Z]
+      ts =
+        DateTime.utc_now()
+        |> DateTime.add(-2 * 86_400, :second)
+        |> DateTime.truncate(:second)
       opts = [operation_id: "op_meter_bang_idem", timestamp: ts, value: 2]
 
       assert_raise Accrue.APIError, fn ->
@@ -225,7 +231,10 @@ defmodule Accrue.Billing.MeterEventsReportUsageTest do
       :ok = Accrue.Actor.put_operation_id("op_golden_meter_43")
 
       # Fixed instant within the 35-day backdating window enforced on usage timestamps.
-      ts = ~U[2026-04-01 03:04:05.000000Z]
+      ts =
+        DateTime.utc_now()
+        |> DateTime.add(-7 * 86_400, :second)
+        |> DateTime.truncate(:second)
 
       assert {:ok, %MeterEvent{} = row} =
                Billing.report_usage(customer, "api_call",
@@ -267,7 +276,10 @@ defmodule Accrue.Billing.MeterEventsReportUsageTest do
       try do
         assert {:ok, _} =
                  Billing.report_usage(customer, "api_call",
-                   timestamp: ~U[2026-04-15 00:00:00.000000Z]
+                   timestamp:
+                     DateTime.utc_now()
+                     |> DateTime.add(-86_400, :second)
+                     |> DateTime.truncate(:second)
                  )
 
         assert_receive {:telemetry, [:accrue, :billing, :meter_event, :report_usage, :stop], meas,

accrue/test/support/telemetry_ops_inventory.ex

@@ -9,6 +9,7 @@ defmodule Accrue.TestSupport.TelemetryOpsInventory do
       [:accrue, :ops, :discount_mapping_invalid],
       [:accrue, :ops, :incomplete_expired],
       [:accrue, :ops, :charge_failed],
+      [:accrue, :ops, :customer_projection_sync_failed],
       [:accrue, :ops, :meter_reporting_failed],
       [:accrue, :ops, :metered_renewal_stale_repaired],
       [:accrue, :ops, :metered_missing_definition],