- Walker serializes the composed (flattened) tree: open shadow roots walk
as host children with <slot> replaced by its assigned light nodes (or
fallback), so custom-element content (product cards, web components) is
captured instead of arriving childless
- In-flow visibility:hidden nodes with a nonzero border box survive the
prune as sized invisible placeholders - ghost spacers carry load-bearing
geometry
- When pruning drops leading in-flow children of a horizontally-translated
track, the baked translateX is re-anchored by their aggregate margin-box
width (settled carousel tracks return to origin instead of pushing real
content off-screen); animation-owned transforms unaffected
- Circular-shrink slide guard counts block-level fill children as
width-deriving regardless of wAuto (block auto-width IS fill), pinning
library-sized slide widths uniformly
- javascript: hrefs emit as "#" and the link gate normalizes both sides
382 tests pass (18 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Capture:
- Hover/focus states are driven with CDP CSS.forcePseudoState instead of
moving the real cursor - transparent full-viewport overlay layers were
swallowing every pointer hover, silently capturing zero hover states on
hover-rich sites
- text-wrap (balance/pretty) captured and emitted (Tailwind text-balance/
text-pretty, arbitrary fallback)
- Videos re-run <source> selection per viewport before frame-0
normalization: resize-without-reload kept aspect-gated variants stuck on
the load-time choice, poisoning mobile ground-truth screenshots
- svg roots capture their computed paint; fill="none" with a computed
paint (the fill-current pattern) recovers the real color instead of
rendering blank
Tokens & naming:
- Full CSS-Color-4 parsing (oklab/oklch/lab/lch/hsl) so modern colors
cluster and earn semantic roles; visually-equal literals share one token;
decoration/gradient/shadow colors consult the palette before minting
opaque tokens (ridge: 45 opaque tokens -> 15, anthropic: 12 -> 7)
- Expanded role vocabulary (background/foreground/primary/accent/border/
surface/muted) with deterministic tiebreaks and a chroma guard
- Section names mine CMS section ids and js-* hooks with hashy-suffix
stripping (split_callout_JtTWTt -> split-callout-section)
364 tests pass (42 new), typecheck clean; determinism verified by
double-regen byte-comparison on two reference runs.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Overlay detection resolves effective z-index through stacking ancestors,
treats a zero-size max-z wrapper plus its full-viewport descendant as one
removable unit, pierces open shadow roots, and relaxes the z floor when
the page is scroll-locked; a lock persisting after dismissal reports
blocking even with no detected overlay
- clickDismiss runs in every frame (close buttons live in cross-origin
popup iframes), matches decline/no-thanks/aria-label close affordances,
and re-runs before every snapshot AND screenshot to catch late-mounting
dialogs
- rootUnclamp triggers from IR content extent (a scroll-lock collapses
captured scrollHeight) and strips vendor-injected body position/overflow
locks when firing
- Pollution gate fails on the scroll-lock contradiction: scrollHeight
pinned to one viewport while IR content spans multiple
- Frame graft skips popup-creative vendor hosts; inline embedded signup
forms remain graftable (regression-tested)
322 tests pass (24 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Visible canvases (>=48px) are captured as PNG stills at capture time
(toDataURL, element-screenshot fallback for tainted/webgl) and emitted as
cid-carrying <img> elements filling the captured box, so canvas-driven
bands no longer render blank
- Source AND clone full-page screenshots now capture via CDP
Page.captureScreenshot with captureBeyondViewport: no scroll-stitching,
no scroll events, so scroll-linked animations can't smear mid-scrub
states into perceptual evidence (pixel-identical to the old path on
static pages; Playwright fallback retained)
- DittoLottie's runtime overlay stays position:absolute/inset:0 for its
whole life and the host carries data-ditto-lottie with a scoped
svg/canvas fit rule, so the runtime animation always fills the pinned
per-viewport box instead of escaping to aspect height
259 tests pass (12 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Nodes carrying an infinite CSS animation at ANY viewport get their frozen
mid-animation transform zeroed at EVERY viewport (the @keyframes owns the
property at runtime); animOwnedProps is now viewport-aware so breakpoint-
gated marquees can't bake a mid-scroll translateX into other bands
- contentSizedFlexRow/contentSizedFlexItemAuto honor the sizing probe: a
flex item whose captured width the probe proved load-bearing
(wAuto=false) is never converted to width:auto, preserving narrow
centered text columns
247 tests pass (7 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- heightFlows() bails when the capture probe proved a height authored-
explicit (hAuto=false, hFill=false), so circular parent/child flow
reasoning can no longer drop 100vh heroes to 0px; the probe verdict now
vetoes the drop through both OR'd paths at the call site
- Space-distributing flex columns (space-between/around/evenly, center,
flex-end) disqualify the content-driven read - the box height is load-
bearing for the distribution
- Lottie mounts pin their captured per-viewport height like other replaced
content, so aspect-fit runtime svgs can't inflate past the captured box
- DittoLottie forwards the placeholder's data-cid onto the runtime svg/
canvas so the media stays addressable after the swap
240 tests pass (9 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Capture:
- Preserve real asset extensions (.lottie no longer truncated); extract the
default animation JSON from dotLottie ZIP containers at materialization
(minimal built-in ZIP reader, no new deps)
- Reset scroll + settle before every viewport snapshot so scroll-linked
styles can't bake into captured computed values
- Marquee detection now requires content overflow (>1.35x), sustained
velocity across separated windows, scroll independence (jiggle test), and
genuine content repetition — kills scroll-settle-lerp false positives
- Sizing probe trusts authored explicit heights (px/vh/calc) over circular
parent/child reflow verdicts, fixing dropped 100vh heroes
Normalize/generate:
- Canonicalize identity transforms to "none" per viewport; emit explicit
transform resets across bands when any band has a real transform
- DittoLottie keeps the captured placeholder until DOMLoaded; failed loads
no longer blank the container
- mx-auto only for true auto-margin centering; literal per-band margins are
preserved (fixes full-bleed regressions)
- Spacing-scale snap tightened to 0.25px (3.5px stays p-[3.5px]); emit
whitespace-nowrap for wrap-vulnerable single-line text leaves
- Grid recipes no longer override captured track counts or column spans;
responsive re-flow plans apply only when geometry agrees
Quality scoring:
- Rewritten 6-dimension rubric (payload, decomposition, duplication,
semantics, hygiene, runtime) with catastrophe caps and per-dimension
reporting; thresholds are documented calibration guides
218 tests pass (74 new), typecheck clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Three clone-fidelity fixes from manual review of the acceptance screenshots.
Fix 1 — mobile nav chip-strip overlap (generate/css.ts). A horizontally
scrollable flex strip (overflow-x:auto flex <ul>) of nowrap chips collapsed
because the base viewport reported min-width:0px on the chips (a mobile-only
strip that is 0-wide at desktop), so the generator emitted `min-w-0`, letting
the chips shrink below their content instead of overflowing — the nowrap text
then collided. Suppress `min-w-0` for a nowrap flex item whose flex parent
scrolls horizontally; scoped away from legitimate min-w-0 truncation (whose
parent does not scroll-x). Verified on a fresh ooni.com clone: 0 chip overlaps
at 375, scrollWidth 776 > clientWidth 375.
Fix 2 — reveal-replay stagger leaves tiles unpainted (generate/motion.ts).
DittoMotion re-hid each revealed element and replayed its entrance on
scroll-into-view preserving the captured delay/duration, so a fast scroll /
full-page screenshot caught most grid tiles mid-entrance. Cap the replayed
delay (<=300ms) and duration (<=600ms), settle each tile per-element a bounded
time after it enters view, and make the global failsafe settle (not re-animate)
so nothing stays hidden. Validator settle path (__dittoMotionStop) unchanged.
Verified: cropin cotton renders 12/12 crop tiles in a normal full-page pass;
motion gate reveals 24/24.
Fix 3 — scroll-linked text-fill frozen at end state (capture/stabilize.ts,
capture/capture.ts, generate/css.ts). A view-timeline text-fill
(animation-duration resolves to `auto`) was baked filled: the clone has no
scroll timeline, so emitting the animation made it jump to its end keyframe via
fill-mode:both. Capture-side, cancel scroll/view-timeline animations before each
snapshot so the DOM records the at-rest state; generation-side, suppress the
animation-* props when animation-duration is `auto` (we render the at-rest
state, never replay a scroll-linked animation). Teach the motion gate to exclude
these from the static-CSS expectation so the gate stays honest. Verified on a
fresh ooni clone: the "world's no.1 pizza ovens" em is white/gray (rgb 240,240,
240), not filled yellow, at rest; motion gate still passes.
Tests: +7 fixtures (css scroll-strip + scroll-timeline, reveal-replay caps,
motion-gate scroll-timeline exclusion); 123/123 compiler tests green, full test
suite green, typecheck clean. No gate regression on the fresh ooni run vs the
20260704-024247 baseline (all gate pass/fail unchanged; perceptual within
0.0004; motion restored to pass).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Capture (4a):
- stabilize: dwell-scroll settling pass + known-library pre-reveal
neutralization after lazy promotion, so every viewport snapshot records
the post-reveal steady state (about-page sections no longer captured
blanket-hidden: 24 base `invisible` wrappers -> 0)
- probeReveals: extended to the visibility + entrance-animation family;
DittoMotion replays them (JS re-hide on mount, IntersectionObserver
reveal, 4s force-reveal failsafe) so SSR/non-JS still shows content
- assets: 206 range-response bodies are no longer stored as full assets
(full-fetch fallback) + video magic-byte validation - the about-page
hero video is now a valid 6.0MB ftyp mp4 instead of 18.9KB of garbage
Generate (4b):
- css: hidden-node geometry policy - a visibility:hidden box with a 0x0
captured bbox at a band becomes display:none there; an OCCUPYING hidden
box gets the captured per-viewport geometry instead of the baked
canonical one. Also covers the ancestor-hidden-at-base case (the
cropin.com/cotton slider arrow: hide inherited from an elementor-widget
ancestor at every width parked a desktop left:548px box inside a 375px
viewport -> body.scrollWidth 585; now 375 on both verified pages)
- tailwind: bare-zero utility gating - font-size:0 -> text-[0px] and
letter-spacing:0 -> tracking-[0px] (text-0/tracking-0 are silently
invalid in Tailwind v4; fixes permanently-visible map labels on the
cotton Global-presence section)
Verified: 87/87 compiler tests green, full-workspace suite green,
regenerated cropin.com + /cotton/ builds measure 375px scrollWidth at a
375px viewport, and a fresh /about/ clone renders all reveal sections
with scroll-replay against the live site.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
