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docs(snapshot): document post page share placements in Storybook - #6556

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docs(snapshot): document post page share placements in Storybook#6556
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@tomeredlich tomeredlich commented Aug 31, 2026

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Adds one Storybook page — Features / Snapshot / Surfaces / Post page — documenting where sharing lives on the post page today and the single snapshot placement we want to add.

No production surfaces change. The page is drawn from the real components (PostSourceInfo, PostActions, PostContentWidget, MobilePostFloatingBar) rather than from generic mocks, at desktop, tablet and mobile.

What it records

What ships today

  • The ⋯ menu opens with Share via (opens the share modal). There is no Copy link in any post context menu.
  • The engagement bar already ends with a labeled Copy (LinkIcon).
  • PostHeaderActions is hidden laptop:flex, so on tablet the only share action on the whole screen is that Copy — Read post and ⋯ are gone.

The one snapshot placement

  • The text-selection floating bar (feat(share): floating share bar for text selected in posts and comments #6352). A highlighted line has no OG image of its own, so the quote is the share and the link is only attribution.
  • Everything else on the page is ruled out: the post already has a real per-post OG image, so a second image payload adds a step without adding anything to send. The dropped placements are named in a closing note so the decision stays on the record.

Notes for review

  • Controls on the page are inert — it compares placement, not behaviour.
  • Carries SnapshotIcon (3 files + one export line), which the page needs and which is not yet on main.
  • Both PostActions and MobilePostFloatingBar have .v2 variants behind engagement_bar_v2, which defaults to false. The page draws v1; the conclusion holds either way, since both versions end with Copy and neither has a Share button.

🤖 Generated with Claude Code

Preview domain

https://snapshot-post-page-variations.preview.app.daily.dev

Adds a Storybook page that draws the post page from its production
components — PostSourceInfo, PostActions, PostContentWidget and
MobilePostFloatingBar — at desktop, tablet and mobile, showing what
ships today and the one snapshot placement we want.

Today the post menu opens with 'Share via' and the engagement bar ends
with a labeled 'Copy'; below laptop PostHeaderActions is hidden, so on
tablet the only share action on the screen is that Copy. The post has a
real per-post OG image, so snapshot is limited to the text-selection
bar, where a highlighted line has no OG of its own.

Carries the Snapshot icon it needs; no production surface changes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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The page argued for one snapshot placement — the text-selection bar — without
showing what pressing it produces, so the trade-off against Copy link had to be
taken on trust. The selection category now ends with the 1080x1080 card the
button exports, drawn from the real HighlightTextSnapshotCard (#6544) at a
third of its size and seeded with the highlighted line on the page above it.

Carries the four card files that page needs from #6544 — the frame, the
seeded gradient, the quote truncation and the highlight card itself — plus the
.snapshot-copy utility they rely on. No production surface renders them yet.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
#6556 argued the case for one snapshot placement and drew what it exports;
this makes it real. Selecting a line of a post now raises a floating bar with
copy link, copy text and Snapshot, and Snapshot hands back the 1080x1080 PNG
of the quote — clipboard first, download where the clipboard refuses images.

Behind `snapshot_selection_share`, which defaults to off, and only on the post
page: the decision on the modal was to leave it alone. `useConditionalFeature`
evaluates on post pages only, so nothing else logs an exposure.

The capture pipeline and the button come from #6544 (snapdom, captureShareImage,
SnapshotButton). New here: `useTextSelection`, which reports a selection only
while it lives inside the post body, and the bar itself. The selection commits
on the trailing edge of the drag rather than behind a drag flag — a pointerup
lost to a release outside the window would otherwise strand the toolbar.

/dev/snapshot carries the review surface: the live bar, the card at every quote
length, and the real capture output. Unflagged there, so it can be reviewed
without GrowthBook, and blocked on the canonical production hosts.

Testing: shared 376 suites / 2652 tests, webapp 81 / 644, extension 6 / 52.
Drag-selected a quote in a browser and captured from the bar: clipboard on a
real press, download plus an "Image saved" toast on a scripted one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The version on this branch was a trimmed copy: two categories out of six. The
page on #6544 carries the whole post-page argument, and the missing four are
the load-bearing ones — the share strip, end-of-thread band and post-upvote
prompt; the audit showing seven post types breaking seven different ways; the
poll recommendation, which is the one type where snapshot beats a link
outright; and the modal and sticky nav the audit had missed.

Brings surfaceChrome along, since the page is drawn with its ShareSheet and
its three real viewport widths rather than the older device rail, and keeps
the exported-image variant next to the selection bar it belongs to.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The Storybook page argues for nine placements; only the selection bar could
actually be pressed. /dev/snapshot now carries all of them with working
controls rather than pictures of them: copy summary, the selection bar, the
share strip, the end-of-thread band, the post-upvote prompt, both poll
snapshots and the sticky nav copy-link. Every copy button copies for real and
every Snapshot rasterizes the card it would share.

Two new payloads this needed:

- PollSnapshotCard — the poll recommendation had no card. The winner is drawn
  in the accent and the rest stay quiet, so the answer reads before the bars.
- CopySummaryButton (#6350) — headline, TLDR and link as three paragraphs, so
  a paste into a thread is a usable message rather than a bare URL.

Both copy call sites now catch a rejected clipboard write. `navigator.clipboard`
refuses outright when the document is not focused, and the shared hook awaits
it without a catch, so the press produced no toast, no fallback and an
unhandled rejection. It now says the clipboard was blocked.

Only the selection bar is wired to the real post page; the rest are placement
mocks with real controls, which is what the review needs before any of them is
committed to a surface.

Testing: shared 377 suites / 2654 tests, webapp 81 / 644. Pressed every control
in a browser — real clicks copy (OS clipboard changes), blocked clipboard shows
the error toast, both poll Snapshots and both capture buttons return 1080²
PNGs (quote 423 KB, poll 378 KB).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Every placement the Storybook page argues for is now production code on the
surface it belongs to, each behind its own flag defaulting to off:

- post_copy_summary — CopySummaryButton runs into the end of the TLDR in
  PostContent, evaluated only where a summary exists.
- post_share_prompts — DiscussionShareRow under the comment composer in
  PostEngagements, already shipping in the discussion panel but never on the
  post page, and EndOfThreadShare after the thread.
- poll_snapshot — PollSnapshotButton under the poll bars and on the post-vote
  prompt in PollPostContent, evaluated only on polls that have votes.
- post_nav_copy_link — a copy-link icon in PostNavigation, gated on
  isFixedNavigation so the inline navigation is untouched.

The post-upvote prompt needed nothing: PostContentShare already renders
"Should anyone else see this post?" with a copy-link input the moment you
upvote. The page proposed a placement production had already built.

pollSnapshotFromPost derives each bar from the options' own counts rather than
numPollVotes, which counts voters and would leave the bars adding up to
something other than the poll.

/dev/snapshot now mounts the real components instead of imitations. `/dev/*`
short-circuits to a QueryClient-only tree in _app, so the page stands in for
the auth and log contexts the share components reach for — signed out, no
squads, logging swallowed — and names the flag behind each placement.

Testing: shared 379 suites / 2661 tests, webapp 81 / 644, extension 6 / 52.
New specs cover the poll payload maths, the band's empty-thread case, the copy
payload and both flag states for copy summary. Pressed every control in a
browser: both poll snapshots capture, the real share row and band render.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
lint_shared runs eslint over the whole package with --max-warnings 0, and this
file was written after the last per-file fix pass, so a prettier break reached
CI.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The placements were production code on the real surfaces but invisible where
they most needed reviewing. A preview deployment runs NODE_ENV=production
against the production API, so `isDevelopment` is false and GrowthBook's dev
tools are off: there is no way to open a flag from the browser, and every
placement defaulted to off.

useSharePlacement wraps the flag: on, when the flag says so, or unconditionally
on a *.preview.app.daily.dev host. The host is read after mount rather than
during render, because the server cannot know what it will be served as and
disagreeing would break hydration.

The committed defaults stay false, so merging still changes nothing for anyone
on app.daily.dev and the rollout remains a GrowthBook decision. Only the
branch preview opens itself, and a surface that opted out with shouldEvaluate
stays out there too.

Testing: shared 380 suites / 2665 tests, webapp 81 / 644. New spec covers the
production host with the flag on and off, the preview host with no flag, and
the opted-out surface on a preview. Package lint clean for shared and webapp.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Found on the preview: the icon was missing on a real post that plainly had a
summary. Anonymous visitors get in-content AdSense, and then the post page
renders the summary itself through `renderSummarySegments` — ad slots between
the parts — so PostContent's own paragraph, the only branch carrying the
button, never runs. Every signed-out visitor saw nothing.

The segmented branch cannot take the icon inline the way the plain one does,
since the parts belong to the page's render prop, so it trails the block
instead.

Testing: shared 380 suites / 2667 tests, webapp 81 / 644, package lint clean.
Two new specs cover the segmented summary with the flag on and off.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Four placements were invisible, and they had one cause: they were wired to
PostContent and PostEngagements, which the redesigned post page does not
render. It draws PostFocusCard and PostDiscussionPanel instead, and the
post_redesign flag decides which layout a reader gets — so the work landed on
the layout half the audience does not see. The two that did work were the ones
that did not depend on it: the share strip, which the discussion panel already
shipped, and the poll, which is not redesign-eligible and is always classic.

- PostFocusCard now carries the selection bar, scoped to the card so a quote
  can only come from the post's own body, and copy summary on both summary
  variants — the plain paragraph and the truncated video one.
- PostDiscussionPanel carries the end-of-thread band, and PostContentShare,
  which is where the classic page's post-upvote prompt comes from.

The prompt also never fired from the post page at all: PostContentShare waits
on usePostActions, and only feed card buttons raised 'upvote'. Both post-page
bars — PostActions and FocusCardActionBar — now raise it when they upvote,
behind post_share_prompts so the prompt's existing behaviour is unchanged
wherever the flag is off.

Testing: shared 380 suites / 2667 tests, webapp 81 / 644, extension 6 / 52,
package lint clean for shared and webapp.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Two reasons it was missing from the modal. The gate was `isPostPage`, so the
classic modal never mounted it — I had read the page's "no snapshot on the post
page or modal" as covering selected text too, when selected text was the
exception it carved out. And the bar is portaled to the body at z-popup while
the modal overlay is z-modal, so even once mounted it rendered behind the modal
the quote was selected in.

The bar is now page and modal both, at z-max: a reader highlights a line
wherever they happen to be reading it, and on desktop that is mostly the modal.

Copy summary is still page-only — say the word and it can follow.

Also covers the redesigned layout with specs: PostFocusCard is what the
post_redesign flag serves, and the placements were wired to the classic layout
first.

Testing: shared 380 suites / 2673 tests, webapp 81 / 644, package lint clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
…nk with it

Design pass on the three prompts:

- The floating bar leads with Snapshot, labelled and solid, with copy link and
  copy text as the quiet pair beside it. It is the reason the bar exists and it
  was the last, smallest thing in the row.
- "Should anyone else see this post?" drops the bordered widget and the link in
  an input for a copy-link button with the icon trailing. There is one thing to
  do with that link, and an input asks to be read first. Behind
  post_share_prompts, so the shipping prompt is unchanged until rollout.
- The end-of-thread band drops its box for the same reason, reads "Send it to
  someone who'd have opinions" instead of counting comments, and offers a solid
  copy-link button. It still only appears where a thread exists.

A copied snapshot now carries the post link as text/plain beside the PNG, so a
rich composer takes the image and a plain one takes the link. Browsers that
refuse two representations in one item still get the image.

Testing: shared 381 suites / 2676 tests, webapp 81 / 644, extension 6 / 52,
package lint clean. New spec covers the clipboard payload, its single-item
fallback and the no-link case.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
- The poll card carried its status and count as a footer, while the product
  puts that line under the question and above the options. It now reads the
  same way, and says what the product says: "Voting open · 1.3K votes · Today",
  or "Voting ended · N total votes" once it closes. The source keeps the
  bottom line as attribution.
- The upvote prompt moves out of the discussion panel and under the action bar
  that raises it — the classic page has always had it there, and on the focus
  layout it had ended up below the comment composer.
- Both prompts now read as a pair: title, subtext, and a solid Copy link with
  the icon trailing.
- Both primary buttons are ButtonV2.

Testing: shared 381 suites / 2677 tests, webapp 81 / 644, package lint clean.
The poll spec now freezes the clock rather than reading it: postDateFormat
answers "Now" inside the first minute, so a real clock decided the assertion.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
"Tsahi's button" is SplitShareButton from #6369 — copy link and a chevron
holding the networks, meeting at one hairline — wrapped by ShareBand, which
pairs it with a title and a line of copy. #6369 built it for exactly these two
surfaces: the band below an active discussion and the prompt after an upvote.

Neither PR landed. #6369 is closed and #6378 merged into it, so the components
exist on no branch that ships. They are carried here — ShareBand, ShareActions,
SplitShareButton, CopyStateIcon and the Origin they log against — and both
prompts now render through ShareBand rather than the pair of hand-rolled rows
I had built. If that stack revives, these two callers should collapse into its
EndOfConversationShare and the copies here should go.

The copy is theirs too, so the two bands read as one pair.

Testing: shared 382 suites / 2680 tests, webapp 81 / 644, extension 6 / 52,
package lint clean for shared and webapp. The ported ShareActions spec runs
green here as it does there.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The band sat 40px below the action bar and 16px above the comment box. The
focus card's column is already gap-4, so the mt-6 the band carried for the
classic layout — where PostContainer has no gap and every child hand-rolls its
margins — stacked on top of a gap that was doing the job. Spacing now belongs
to the host: the band defaults to my-4 for a container that supplies none, and
the focus card passes nothing.

Copying no longer dismisses the prompt. It called onInteract('none'), so the
band vanished under the cursor — taking the networks behind the chevron with
it, right when someone might want a second one.

Testing: shared 382 suites / 2680 tests, webapp 81 / 644, package lint clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
… does

Audit against production: every copy on a post resolves a short link carrying
the share campaign at press time — usePostContent and DiscussionShareRow both
do `getShortUrl(commentsPermalink, SharePost)` in the handler. Three of mine
put the raw permalink on the clipboard instead, so a paste from them was
attributed to nobody and logged nothing.

- The selection bar's copy link now shortens, tracks and logs SharePost,
  matching DiscussionShareRow line for line.
- Copy summary embeds the tracked link rather than the permalink.
- Both snapshots carry the tracked link as the text half of the clipboard.

The link is resolved as a promise handed to ClipboardItem rather than awaited
first: awaiting ends the task that handled the gesture, and Safari refuses a
clipboard write after that. The capture and the shortener resolve in parallel.

Testing: shared 382 suites / 2681 tests, webapp 81 / 644, package lint clean.
New spec covers a link that is still resolving when the write starts.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
"Share via…" opened the native sheet titled "null". The band was handed
`shareLink` from PostContentShare's eager short-URL query, and that query is
disabled without a signed-in user and yields nothing when the shortener fails
— so an empty value reached `navigator.share` as the text it renders.

The band now takes the permalink and the campaign, like the end-of-thread band
does, and lets the control shorten at press time: getShortUrl falls back to the
tracked URL, so there is always a link to share.

The same query also gated the whole component. A disabled query stays pending
forever in query-core, so that check could hide the prompt outright; it now
guards only the widget that needs the link up front to fill its input.

Testing: shared 382 suites / 2681 tests, webapp 81 / 644, package lint clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
@tomeredlich
tomeredlich marked this pull request as draft September 2, 2026 06:50
tomeredlich added a commit that referenced this pull request Sep 2, 2026
Three controls inside the brief, all on `briefing_share_controls`:

- The post page's highlight bar (#6556), scoped to the body so a
  selection in the header or the preferences card never raises it.
- A copy icon per bullet and paragraph, carrying the text and the brief
  link, like #6350's copy-summary icon.
- A Snapshot on the Must know heading that captures its bullets as one
  card, with the claim before the colon as each line.

The body is a single `<Markdown content={contentHtml} />`, so none of
these can be declared in JSX: briefBodyBlocks reads the blocks back out
of the rendered DOM — which is also the most faithful source, being what
the reader is looking at — and the controls are portalled into them.

The end band takes #6349's borderless layout with the icon on the right,
copy unchanged.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
tomeredlich added a commit that referenced this pull request Sep 2, 2026
Three controls inside the brief itself:

- The post page's highlight bar (#6556), scoped to a body container so a
  selection in the header or the preferences card never raises it.
- A copy icon per bullet and paragraph, carrying the text and the brief
  link, after #6350's copy-summary icon. Each one is labelled with what
  it copies, since a brief carries a column of them.
- A Snapshot on the Must know heading that captures its bullets as one
  card, with the claim before the colon as each line.

None of these can be declared in JSX: the body is a single `<Markdown
content={contentHtml} />`, so briefBodyBlocks reads the blocks back out
of the rendered DOM — which is also the most faithful source, being what
the reader is looking at — and the controls are portalled into them.
Hosts are marked and swept before each run, because Markdown re-renders
on its own for hover cards and the image modal.

The closing band is #6369's ShareBand with the briefing's copy, so it
cannot drift from the end-of-conversation band it was asked to match.

All of it sits behind `briefing_share_controls`, default false.

Mockup-to-eng-pass: 1

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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