coinosv3.git/tools/feed-pager-ahead-test.js, branch master

Media pager: up and down go from post to post, left and right along a post's pictures. Adam: swipes and arrows up/down should go to the next post's media, left/right to the next within a post. The pager is now posts stacked top to bottom, each a row of its pictures or clips side by side — a quoted post's join the post that quotes it — with dots along the top when a post has more than one, saying how many and which. Up and down (swipe, arrows, j/k, Page) move a post at a time and land on a post where its row was left; left and right (swipe, arrows, h/l) move within the post and stop at its ends. A post's pictures all load as it comes near (those along its row too); a clip's head start goes to the next post's (where its row rests), the next along this one, and the post after next, at half; the look-ahead (the feed paging on, the media crawl) counts posts. Pictures pan sideways as well as up and down at 1×. Tests find the slide on screen by where it sits (the pager's children are posts now); feed-picture-pager walks right within a post, down past one with none, back up to where a post was left, left to its first, and a sideways swipe next to a swipe up; quote-pager walks the quoting post's row (its own picture, then the quote's).

2026-10-13T06:17:39Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Media pager: past the last slide, a "fetching the next video" screen — and the next one, when it comes, is moved onto. Adam reached the last clip before the next was in, and a swipe only nudged the clip and sprang back. Now the pager ends in a screen of its own: a ring sweeping round, three sparks orbiting the other way, the play mark (a picture mark in a pictures pager) breathing in the middle, and "Fetching the next video…" (or "Fetching more pictures…") with a sheen running through it, all still under prefers-reduced-motion. Landing there stops the clip left behind and asks for more at once (the feed pages on; the media grid's pager crawls); slides that arrive go in above it, and one arriving while the reader waits is moved onto and plays. With nothing older to be had (the feed at its end, or the media index), it says "That's everything for now" and goes still. The scroller no longer anchors (overflow-anchor: none), so a slide put in above the screen doesn't hold the screen in view. Strings in all 20 languages. tools/pager-tail-test.js (relays that take 3 s for anything older: the screen at the end, the clip behind stopped, the next clip moved onto and playing, the end saying that's everything, Escape onto the last clip's post); feed-pager-ahead and feed-media-views count slides without it.

2026-10-13T05:19:47Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Feed pager: closing it lands on the post of the slide last looked at, and the clips ahead are looked for sooner. Adam swiped to the last clip (one more loaded, slowly), closed the pager and the feed was somewhere else. Closing used glideToPost: for a row never drawn — a post the pager went on to, maybe paged in while it was open — it guesses the place from the rows' average height, draws there, and glides once to wherever the row then is; rows of very different heights (a long post, a clip finding its shape) put the guess far off, and the glide was never corrected as they settled (in the test: 325px past it; a row still undrawn after the guess sent the feed to the top). Now landOnPost jumps (the pager was covering the feed), draws, and sets the row under the top again each frame until it has sat still a moment, 2.5 s have gone, the reader touches the page, or the page is sent elsewhere. And the pager keeps more ahead before paging the feed on: six slides for clips (fewer and further between, each watched a while), four for pictures (was three). feed-pager-ahead-test: some of the words-only posts are long now, and closing on the second-last picture checks the feed sits on its post after the pictures above have loaded (fails before: row top -325).

2026-10-13T04:48:44Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Feed pager: nearing the last slide pages the feed on, so the pictures and clips keep coming. Adam swiped to the last picture of a pager opened from the feed and it simply ended: that pager walks the feed's own posts, which page in ten at a time as the feed is scrolled, and swiping isn't scrolling — its "near the end" ask went to the media grid's crawl, which this pager doesn't read. Now, with three slides or fewer past the one on screen (on arrival, and on the pager's 1.5 s tick if a page came back empty or the feed was busy), the feed pages on — the posts it holds, then older ones from the relays (loadOlderFeed) — and the pager grows, several pages in a row when those posts carry nothing to show, until it is more than three ahead or the feed is at its end. tools/feed-pager-ahead-test.js: 26 pictures across 41 posts with 15 words-only posts in the middle and the older ones only on a stand-in relay (the feed's cache keeps 30); stepping through reaches every picture, in the feed's order.

2026-10-13T04:16:14Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt