Merge origin/main into feat/wait-banner: resolve floats retirement + openTabInBottomPane

src/client/api.ts

@@ -8,7 +8,7 @@
  */
 import { encodeHtmlUrl } from '../html-route.ts'
 import type { LastActivity } from '../subagent-activity.ts'
-import type { SidechatLogEvent, SidechatThreadInfo } from '../sidechat-core.ts'
+import type { SidechatLiveEvent, SidechatLogEvent, SidechatThreadInfo } from '../sidechat-core.ts'
 import type { SidebarSessionEvent } from '../context-types.ts'
 import type { BrowserProbeResult } from './browser.ts'
 
@@ -394,9 +394,12 @@ export const api = {
     call<SidechatThreadInfo>('sidechat.info', { childId }),
   /** One transcript pull of a Side Chat thread: the thread's OWN events
    *  (the inherited seed is cut host-side and never crosses the wire).
-   *  `afterSeq` narrows the response to the delta beyond it (poll tail). */
+   *  `afterSeq` narrows the response to the delta beyond it (poll tail).
+   *  `live` is the thread's in-flight model deltas (DSH 0.1.5 publishes them
+   *  outside the session log) — the CURRENT attempt on every pull, never a
+   *  delta, so the caller replaces its live set instead of appending. */
   sidechatEvents: (childId: string, afterSeq?: number, signal?: AbortSignal) =>
-    call<{ events: SidechatLogEvent[] }>('sidechat.events', {
+    call<{ events: SidechatLogEvent[]; live: SidechatLiveEvent[] }>('sidechat.events', {
       childId,
       ...(afterSeq !== undefined ? { afterSeq } : {}),
     }, signal),