feat(webhooks,messaging)!: webhooks deliver via the shared HTTP outbox (ADR-0018 M3 Phase 5)

.changeset/adr-0018-m5-webhooks-shared-outbox.md

@@ -0,0 +1,32 @@
+---
+"@objectstack/plugin-webhooks": major
+"@objectstack/service-messaging": minor
+---
+
+ADR-0018 M3 (Phase 5): `plugin-webhooks` now delivers through the shared
+`service-messaging` HTTP outbox instead of its own.
+
+The webhook delivery substrate — durable outbox, cluster-coordinated dispatcher,
+retry/backoff/dead-letter, retention — is removed from `plugin-webhooks` and
+replaced by the generic `sys_http_delivery` outbox + `HttpDispatcher` in
+`@objectstack/service-messaging`. Webhooks keep only their domain concerns: the
+`sys_webhook` config object, the `AutoEnqueuer` (now enqueues `source: 'webhook'`
+rows via `messaging.enqueueHttp`), and the redeliver admin endpoint (now backed
+by `messaging.redeliverHttp`).
+
+**`@objectstack/service-messaging`:** `MessagingService` gains `redeliverHttp(id)`
+and `listHttp(filter)` over the HTTP outbox.
+
+**`@objectstack/plugin-webhooks` — BREAKING:**
+
+- Now **requires** `MessagingServicePlugin` (declared as a plugin dependency).
+- Removed exports: `WebhookDispatcher`, `MemoryWebhookOutbox`, `SqlWebhookOutbox`
+  (and the `./sql` subpath), `DeliveryRetentionSweeper`, `hashPartition`,
+  `sendOnce` / `classifyAttempt` / `nextRetryDelayMs`, and the `IWebhookOutbox` /
+  `WebhookDelivery` / `EnqueueInput` / `AckResult` / `RedeliverError` types.
+- Removed the `sys_webhook_delivery` object — webhook deliveries are now rows in
+  `sys_http_delivery` (`source = 'webhook'`). The Setup nav points there.
+- `AutoEnqueuer`'s constructor takes an `HttpEnqueueFn` instead of an
+  `IWebhookOutbox`.
+- `WebhookOutboxPluginOptions` reduced to `{ autoEnqueue }` (dispatcher / outbox /
+  retention / nodeId options removed — those now live on `MessagingServicePlugin`).

packages/plugins/plugin-webhooks/package.json

@@ -12,11 +12,6 @@
       "import": "./dist/index.js",
       "require": "./dist/index.cjs"
     },
-    "./sql": {
-      "types": "./dist/sql-outbox.d.ts",
-      "import": "./dist/sql-outbox.js",
-      "require": "./dist/sql-outbox.cjs"
-    },
     "./schema": {
       "types": "./dist/schema.d.ts",
       "import": "./dist/schema.js",
@@ -29,10 +24,8 @@
   },
   "dependencies": {
     "@objectstack/core": "workspace:*",
-    "@objectstack/platform-objects": "workspace:*",
-    "@objectstack/service-cluster": "workspace:*",
-    "@objectstack/spec": "workspace:*",
-    "@objectstack/types": "workspace:*"
+    "@objectstack/service-messaging": "workspace:*",
+    "@objectstack/spec": "workspace:*"
   },
   "devDependencies": {
     "@types/node": "^25.9.1",