fix(cli): correct SSE event format handling for real-time streaming

The SDK yields events directly as the payload without wrapping in { payload: ... }.
Changed processEvents to treat event as the payload directly instead of looking
for event.payload. This fixes the 'Waiting for completion...' hang in GitHub
Actions where all events were being silently skipped.

🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/cli/run/events.test.ts

@@ -39,7 +39,7 @@ describe("event handling", () => {
       properties: { sessionID: "my-session" },
     }
 
-    const events = toAsyncIterable([{ payload }])
+    const events = toAsyncIterable([payload])
     const { processEvents } = await import("./events")
 
     // #when
@@ -59,7 +59,7 @@ describe("event handling", () => {
       properties: { sessionID: "other-session" },
     }
 
-    const events = toAsyncIterable([{ payload }])
+    const events = toAsyncIterable([payload])
     const { processEvents } = await import("./events")
 
     // #when
@@ -84,7 +84,7 @@ describe("event handling", () => {
       properties: { sessionID: "my-session", status: { type: "busy" } },
     }
 
-    const events = toAsyncIterable([{ payload }])
+    const events = toAsyncIterable([payload])
     const { processEvents } = await import("./events")
 
     // #when

src/cli/run/events.ts

@@ -35,8 +35,8 @@ export async function processEvents(
     if (ctx.abortController.signal.aborted) break
 
     try {
-      const payload = (event as { payload?: EventPayload }).payload
-      if (!payload) continue
+      const payload = event as EventPayload
+      if (!payload?.type) continue
 
       handleSessionIdle(ctx, payload, state)
       handleSessionStatus(ctx, payload, state)