Lightweight Accounts P1: email capture flow for logged-out consumer actions - #5101
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Lightweight Accounts P1: email capture flow for logged-out consumer actions#5101aseckin wants to merge 35 commits into
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…equest action Client-side foundation for the lightweight accounts flow: the gated action type union (post_vote / post_subscribe / forecast), a localStorage-backed pending record store shared across trees via useSyncExternalStore (plus the sessionStorage stash for OAuth carry-through), the wire mapping shared by the email and social paths, and the requestEmailLink API client + server action (Turnstile headers, always-204 anti-enumeration contract). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
BottomDrawer wraps Base UI's Drawer (animated enter/exit even when mounted on demand, swipe-down dismiss, max height capped below the navbar). The capture drawer runs the options/input/sent state machine: subscribe opens on checkbox cards with only 'When it resolves' preselected, vote and forecast go straight to email; includes prefilled repeat state, resend cooldown, Google button with action stash, Turnstile, and per-trigger copy in en.json. Registered as the emailCapture modal type. Non-English locales pending translations:generate. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Post votes, question subscriptions, and question-level forecasts now open the capture drawer with the drafted action attached instead of the signup modal. Forecast makers expose buildForecastPayload so the untouched-slider case falls back to a sign-in-only drawer without clearing pending actions. The consumer Predict button opens the maker for visitors (mobile: bottom drawer instead of the fullscreen overlay; one active drawer at a time), and the new NotifyMeCta gives mobile a subscribe entry point. Group/conditional makers and comment/key-factor gates keep the existing signin modal. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Device-local banner under the top chrome while a capture record is pending; tapping it reopens the drawer in recap state with the resend cooldown. The magic-link failure page gains an inline form that requests a fresh link, re-sending the stored gated action when one exists. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The drawer's Google path stashes the pending action in sessionStorage before the redirect; the callback attaches it to the code exchange (backend applies it best-effort per 9e543e5) with a 15-minute staleness guard, and clears the capture record on success. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review. 📝 WalkthroughWalkthroughThe PR adds anonymous email capture for subscriptions, votes, forecasts, and sign-in. It adds gated-action persistence across email and OAuth flows, subscribe-capture experimentation, responsive mobile drawers, confirmation UI, account-interface defaults, CSRF updates, and translations. ChangesEmail capture and gated actions
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to This PR applies pending votes, subscriptions, and forecasts after email or Google sign-in. The current Google flow can report completion even when the action is lost or fails, and repeated delivery may duplicate forecast effects; merge should wait for a reliable completion/retry contract or explicit owner acceptance. Sequence Diagram(s)sequenceDiagram
participant Visitor
participant EmailCaptureDrawer
participant EmailLinkVerify
participant Authentication
participant ConfirmationToast
Visitor->>EmailCaptureDrawer: submit email and gated action
EmailCaptureDrawer->>Authentication: request email link
EmailLinkVerify->>Authentication: verify email link
Authentication-->>ConfirmationToast: redirect with applied trigger
ConfirmationToast-->>Visitor: show action confirmation
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crypto.randomUUID only exists in secure contexts, so building an OAuth URL crashed the app when the site is accessed over plain http (e.g. LAN device testing against the dev server). getRandomValues has no such restriction. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Mobile capture drawer gets a unified header row: back button or wrapping title inline with the close button at consistent padding (desktop modal unchanged). BinaryCPBar's lg size now draws the SVG at real dimensions instead of a CSS transform, so the layout box matches the visual and the scale-compensation hacks at both call sites are gone. Tighter mobile spacing on consumer question pages (action row, prediction block, notify CTA, drawer paddings) and a consolidated drawer handle gap. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The Share button opens a bottom sheet on mobile (desktop keeps the dropdown): a 2x2 grid of Copy Link / X / Facebook / Embed tiles with pressed-state feedback, toasts on action, and the drawer staying open (Embed hands off to the embed modal). BottomDrawer gains a standard title-plus-close header used by the predict drawer too, and the new DrawerActionButton tile is the building block for future mobile drawers, with share_post_drawer as the reference example. useCopyUrl falls back to execCommand where navigator.clipboard is unavailable (insecure contexts). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Two coherent bundles behind the subscribe_capture_experiment flag: control shows the options step with 'Notify me of updates' copy, test goes straight to the email input under 'Notify me when this resolves' and subscribes to resolution only. Enrollment reuses the anonymous-experiment rails from the autotranslation experiment (middleware evaluation, first-party cookie, same-request header, shared distinct_id) with the variant resolved server-side on the already-dynamic question route so static pages stay static; the root-level drawer falls back to a synchronous cookie read. Exposure registers on surface show, not page load, and capture events carry a captureVariant property. Unenrolled, signed-in, and flag-off all serve the status quo. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Adds es/cs/pt/zh/zh-TW translations for the 62 new keys (email capture
drawer, confirm banner, dead-link recovery, notify CTA, share drawer,
experiment copy). Placeholders and rich-text tags preserved; the
compositional subscribe phrases translated to read grammatically inside
the 'get updates when {a}' sentences.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…n shape A clipboard write fails for real reasons, permission denied or a non-secure context among them, and the drawer was passing no errorMessage: the tap simply did nothing, which reads as a broken button. The wording is the one already translated for the midterms hub, under a name that is not bound to that page. The csrf test asserted a UUID because that is what randomUUID returned; hex from getRandomValues is the shape now. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The component already called itself BottomDrawer; the module it lived in was just "drawer", which says nothing about the one thing that distinguishes it. Base UI's own Drawer is imported under that name inside this very file, and sidebar.tsx uses it for a drawer that comes from the side, so the generic name was ambiguous in both directions. The action button follows, since it is named after the drawer it belongs to. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Nothing in the codebase ever set interface_type, so every account from every path inherited the forecaster default. A visitor is served the consumer view while signed out, so following one question by email link handed them a forecaster layout the moment they arrived - a switch they never asked for. Set at creation rather than on sign-in, so an existing account that uses a magic link keeps whatever mode its owner chose. Google needs a signal to tell the two entry points apart, since the pipeline's create_user serves the ordinary signup modal as well: the callback already knows the capture drawer sent it, and passes that along on the code exchange. It travels as the source rather than as a "make this a consumer" flag so the wire carries the fact and the backend keeps the policy. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
"Done" invited the very thing the step is asking the reader not to do - it sat under a message telling them to go open a link, reading as though the job were finished. Both shells already close from their own header, so nothing is lost. The envelope badge was the only decorative icon in the flow, and on mobile it landed between the drawer's header title and the body text with nothing to anchor it to. The captcha container also trailed the terms line, well below the button it guards. It now renders with the send and resend views rather than once for the whole sheet: moving between them remounts it, which issues a fresh token, and single-use tokens mean the next attempt wanted one anyway. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Consuming a link used to happen inside the full site chrome, so the wait was spent watching things arrive and leave: the confirm-email banner renders nothing on the server, pops in once hydrated because a pending record exists and no user does, then vanishes the moment the user appears. The footer sat high on the short loading page and left as the real one loaded, and the toast landed while all this was still settling. The route moves to its own group with no layout, the way (embed) and (prediction-flow) already do, so nothing renders but the loading view and it is the first thing painted. The URL is unchanged. The dead-link screen gives up the navbar with it, which is the ordinary shape of an auth error page. The destination is prefetched and entered inside a transition, so it is fully rendered before anything swaps, and a curtain on the far side fades the handover out. That curtain is armed from an effect rather than during render: server-rendering a full-viewport overlay left orphaned markup that React never adopted, sitting opaque over the page forever. Reading the param on every change also survives the confirmation toast stripping it. It clears on the animation ending or on a timer, whichever comes first, because a background tab pauses animations and a stuck curtain hides everything. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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In `@front_end/src/services/api/auth/auth.server.ts`:
- Line 64: Update the SocialAuthClient call sites to pass the signup source
value rather than a boolean: use EMAIL_CAPTURE_SIGNUP_SOURCE when stash is
present and null otherwise. Replace the existing !!stash fifth argument at both
affected locations, preserving the string-or-null contract of signup_source.
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📒 Files selected for processing (19)
authentication/social_pipeline.pyauthentication/views/email_link.pyfront_end/messages/cs.jsonfront_end/messages/en.jsonfront_end/messages/es.jsonfront_end/messages/pt.jsonfront_end/messages/zh-TW.jsonfront_end/messages/zh.jsonfront_end/src/app/(auth-flow)/auth/email/components/email_link_verify.tsxfront_end/src/app/(auth-flow)/auth/email/page.tsxfront_end/src/app/(main)/accounts/social/[provider]/actions.tsfront_end/src/app/(main)/accounts/social/[provider]/client.tsxfront_end/src/app/(main)/layout.tsxfront_end/src/components/auth/signing_in_curtain.tsxfront_end/src/components/auth/signing_in_panel.tsxfront_end/src/components/email_capture/email_capture_drawer.tsxfront_end/src/services/api/auth/auth.server.tsfront_end/src/utils/gated_actions.tsfront_end/tailwind.config.ts
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- front_end/messages/zh-TW.json
- front_end/messages/cs.json
- front_end/messages/pt.json
- front_end/messages/zh.json
- front_end/messages/en.json
- front_end/messages/es.json
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Balanced wrapping was breaking "The link signs you in and works for a day" into a narrow ragged column rather than filling the width it had. The confirmation email greeted a username the reader has never seen: it is generated for them at the moment they enter their address, so "Hello PriorTimekeeper" introduces a stranger. The sign-in email keeps its greeting, where the name is one the reader chose. Note this leaves that email the only account template with no greeting at all - siblings that write to someone without an account yet use a bare "Hello,". The compiled .html is generated by mjml_compose and gitignored, so this edit takes effect only once that runs. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Review feedback. The wire contract was never at risk - the boolean stopped at the server action, which mapped it before calling the API client - but naming the value at the call site drops a translation step and lets the parameter mirror the field it becomes. Typed as the literal rather than string, so a caller cannot invent a source the backend does not know. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
A generic sliding ellipsis said nothing about whose site the reader was waiting on, at the one moment they arrived from an email and needed telling. The mark turned out to be ideal source material: one closed subpath, no holes, no curves, so the same path data is both the route the stroke travels and the mark it resolves into. Sized by height with the width derived, because 13x17 is not square and both dimensions have to be known before the first paint. Reduced motion is handled twice on purpose. The phase is decided in an effect, which is a frame late, so the loop would flash once for someone who asked for no motion; motion-reduce:!animate-none stops it being painted at all while the effect still resolves to the filled mark and reports done. Both keyframes live in globals.css rather than the Tailwind config: their durations are props applied through inline styles, so no animate-* utility exists for Tailwind to emit them from - the same reason the orbit keyframes are there. The fill fade gets its own keyframe instead of borrowing fade-in, which would only exist while some other component happened to use that utility. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The funnel stopped at someone typing an address. Whether they came back through the link - the thing the whole flow exists to produce - left no trace at all, so the drop-off between asking and returning was unmeasurable. Fired from the success branch, before the awaited profile write, reading the same pending record the redirect already reads. sameDevice reports whether the link was opened where it was requested: cross-device arrivals have no local record, so they carry no trigger or surface, and they are the returns most likely to be lost. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The effect that starts the close depended on the phase it sets, so it re-ran the instant it fired and its cleanup cleared the timer meant to carry the mark on to the fill. The loader reached the closed outline and stayed there: the fill never appeared and onDone never ran. Invisible in the app, because the sign-in panel and the curtain both loop and neither ever completes. It showed up the moment the animation was driven through a full cycle by hand. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
non-scaling-stroke had the browser measuring the dash in screen pixels, which silently overrode pathLength: the pattern stayed a fixed length on screen while the outline grew, so one travelling stroke multiplied into a scattering of ticks as the mark got larger. Dropping it lets pathLength do its job and the dash becomes a fraction of the outline - one continuous stroke over a sixth of the M, at every size. Authoring the stroke in viewBox units rather than screen pixels fixes the weight the same way: a constant 0.53 units renders as 0.75px for every 24px of height, so the trace keeps its proportions instead of thinning out. The strokeWidth prop still speaks in rendered pixels and is converted through the same scale. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The five translated locale files conflicted, all of it adjacent-line noise: main added four keys, this branch added seventy-two, and none of them overlap. Resolved as a union of the three stages, taking main's value wherever only main touched a key and carrying its deletions across, since a plain union would quietly resurrect anything main had dropped. en.json merged on its own, and every locale is now at full parity with it - the three aggregation-explorer keys that had been missing since #4806 arrived translated with this merge.
hlbmtc
approved these changes
Sep 3, 2026
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Frontend half of Lightweight Accounts P1 (#5045), built against the merged backend (#5052, #5066, #5085, and gated-action support in social auth from 9e543e5).
What this does
When a logged-out visitor takes a consumer action (vote on a question, subscribe to updates, or make a forecast), they get a capture drawer instead of the signup modal: enter an email, receive a magic link, and clicking it verifies the address, signs them in, and applies the action they were trying to take.
Demo
lightweight-accs.mp4
The flow
Mobile share drawer (reusable pattern)
The Share button on question pages now opens a bottom sheet on mobile (desktop keeps the dropdown): a 2x2 grid of Copy Link / X / Facebook / Embed tiles with pressed-state feedback and toasts, the drawer staying open across actions (Embed hands off to the embed modal). This establishes the house pattern for converting desktop interactions into mobile drawers:
BottomDrawerwith thetitleheader +DrawerActionButtontiles, gated at the call site withuseBreakpoint("sm")—share_post_drawer.tsxis the reference example for future drawers.Subscribe-capture A/B experiment
The subscribe flow ships behind a PostHog experiment testing whether the options step earns richer subscriptions or is just friction:
Enrollment reuses the anonymous-experiment infrastructure from #5082: middleware evaluates the flag server-side for eligible anonymous document requests, pins the assignment in a 26-week first-party cookie (plus a same-request header so the first pageview renders correctly), and shares the distinct_id with the autotranslation experiment so one visitor never has two identities. The variant is resolved server-side only on the question route (already dynamic) so static pages stay static.
PostHog setup
subscribe_capture_experiment, variantscontrolandtest, 50/50 split. No targeting conditions needed (the middleware already restricts enrollment to anonymous non-bot visitors).emailSubmittedfiltered totrigger = post_subscribe, relative to exposure.subscribeOptionsContinuedfires only in control and carries theselectedtypes array; test is constant at one type. Also watchcaptureAbandoned(withstep) for where each arm loses people.captureVariantproperty (control/test/none), and bootstrapped flags stamp$feature/subscribe_capture_experimenton every event.Local/staging testing without the flag: pin an arm by setting the cookie
metaculus_subscribe_capture_abtox%3Acontrolorx%3Atestin devtools.Also in this PR
crypto.getRandomValuesbecausecrypto.randomUUIDdoes not exist in insecure contexts and crashed OAuth URL construction (reachable from the signin modal on main too) when the site is served over plain http, e.g. device testing against the dev server.useCopyUrlfalls back todocument.execCommand("copy")wherenavigator.clipboardis unavailable.BinaryCPBarsizelgnow draws the SVG at real dimensions instead of a CSS transform, so its layout box matches the visual and the scale-compensation hacks at both call sites are gone.Verification
bun run lint(0 errors) andbun run buildpass. (Note: the ~37 "Dynamic server usage" logs during build pre-exist on main; verified against clean HEAD, tracked separately.)Summary by CodeRabbit