Hold the reel sourced in the gap before a live stream, and name the three starts the probe could not see (#100)

[PatrickSt1991]

Issue #100, FUSIONOF's 2026-10-05 page from build-b019483: the live-stream freeze with the hold on, the this run trail and the native output in one page. It is two stalls, a minute apart.

The live stream itself (15:06:04) is ours. At the swipe TikTok pauses the reel, sets the reel after the live stream on its spare element, and only then plays the live stream. In that tick nothing was playing, busy() found no one, the source went through, and the engine built its pipeline 1.5 s after the live stream's (omxtzuhdvideodec22 at 15:06:04.9 beside omxtzh265dec0 at 15:06:03.4). The live stream never left 5.8 s and sat at rs1 for forty seconds until the swipe. On 2026-10-03 the same tick was sourced the same way, the engine happened to build nothing until the swipe, and that live stream played.

• NuiMseHold.busy() now also returns another <video> that is held: a held element is the one about to play. The line says hold v1 blob while v5 is held. The chain of holds still only starts while a video plays and ends at the page playing, re-sourcing or removing each held source.
• currentSrc reads a held URL back, as src and the attribute already did. TikTok's preloader logged empty src is invalid three times, each after a hold.

The reel in front of the live stream (15:05:47) is the 3 October freeze again, to the second: the combined avc1.64001f,mp4a.40.2 ask (seen nowhere else in either trail), an audio-only appsrc pipeline within half a second, the reel stopped with 49 s buffered, and the widened probe saw nothing: no (audio), no detached, scene: 2 video, 0 audio in the document, 1 detached known, 0 iframes. So that element starts by a call none of the wraps see. Read-only, NuiMseWatch now wraps:

• play() on the media prototype, written down for an element that is detached, an <audio>, or one the probe has no event from yet;
• the Audio constructor (new Audio(url) sets its source inside the engine, no setter runs);
• setAttribute('src') on a video or audio element outside the document.

A stall lists six other elements rather than four so the detached ones are not pushed off.

tools/msehold/run.sh holds the gap (held while another element is held, released on play(), untouched when nothing plays and nothing is held) and currentSrc; tools/msewatch/run.sh holds the three wraps to passing the original's return and promise back and the elements being listed at the stall. Both pass. ./build.sh nui builds clean.

INTERNALS: The gap between two reels, and the pipeline nobody asked for, and the 2025-sets state bullet says what the next page decides: a live stream playing through with while vN is held in front of the reel after it is the first fixed; a new Audio/setAttribute src/play() … detached line before the other stall names the element the hold has to learn; nothing stirring with those in is the engine's own, and the pause/play recovery ships.