fix(session): hide pending admission sequence

packages/schema/src/session-pending.ts

@@ -3,7 +3,7 @@ export * as SessionPending from "./session-pending.js"
 import { Schema } from "effect"
 import { optional } from "./schema.js"
 import { Prompt } from "./prompt.js"
-import { DateTimeUtcFromMillis, NonNegativeInt } from "./schema.js"
+import { DateTimeUtcFromMillis } from "./schema.js"
 import { SessionDelivery } from "./session-delivery.js"
 import { SessionID } from "./session-id.js"
 import { SessionMessage } from "./session-message.js"
@@ -45,7 +45,6 @@ export const Message = Schema.Union([UserMessage, SyntheticMessage]).pipe(
 export type Message = typeof Message.Type
 
 const Admitted = {
-  admittedSeq: NonNegativeInt,
   id: SessionMessage.ID,
   sessionID: SessionID,
   timeCreated: DateTimeUtcFromMillis,

packages/schema/test/contract-hygiene.test.ts

@@ -54,6 +54,29 @@ describe("contract hygiene", () => {
     ).toEqual({ text: "completed" })
   })
 
+  test("pending session items omit the internal admission sequence", () => {
+    expect(
+      Schema.encodeSync(SessionPending.Info)(
+        Schema.decodeUnknownSync(SessionPending.Info)({
+          admittedSeq: 3,
+          id: "msg_pending",
+          sessionID: "ses_pending",
+          timeCreated: 1,
+          type: "user",
+          data: { text: "hello" },
+          delivery: "steer",
+        }),
+      ),
+    ).toEqual({
+      id: "msg_pending",
+      sessionID: "ses_pending",
+      timeCreated: 1,
+      type: "user",
+      data: { text: "hello" },
+      delivery: "steer",
+    })
+  })
+
   test("forms require at least one field", () => {
     expect(() =>
       Schema.decodeUnknownSync(Form.Info)({