Three filters keep the escalated contrast gate honest, each surfaced by
running check across the registry examples:
- data-layout-ignore (the layout audit's existing decorative opt-out)
now also excludes set-dressing text from the contrast audit — one
vocabulary for 'not copy a viewer must read'.
- Text that has (nearly) left the canvas is skipped: sampling a clamped
off-canvas box reads border pixels and produced the classic false
white-on-white (a cursor exiting the frame).
- Contrast failures follow the same persistence rule as layout findings:
observed at a single sample of a multi-sample sweep demotes to
warning; held failures gate.
Example fixes the sweep exposed: motion-blur's 21 deliberately-dim rail
labels are marked decorative (its vivid labels pass on their own);
nyt-graph's subtitle and source-note adopt the gate's suggested
compliant gray; decision-tree's declared duration drops 15s to 10s —
its content ends at ~9.5s and every render shipped a blank white tail.
The persistence-tier promotion surfaced two held content_overlap errors
on the hero heading; zooming in shows the collaborative-cursor demo
(cursor badge + typed comment bubble) hovering by design. Opt out with
data-layout-allow-overlap per the finding's own fixHint. The example's 4
pre-existing gsap_css_transform_conflict lint errors stay for a separate
example-maintenance pass.
* fix(examples): host the kinetic-type A-roll so the video actually renders
The A-roll <video> was authored inside the main-graphics sub-composition
template. The runtime only seeks and decodes media that is a direct child of
the host root, so the footage was never driven by the live runtime and renders
blank in Studio preview and the player (the producer's compile step happened to
hoist it, masking the contract violation in server renders). The example also
failed lint with eight errors.
Root cause and fixes:
- Move the <video> out of compositions/main-graphics.html and into index.html
as a direct child of #root, with data-start/data-duration/data-track-index
and class="clip". Its per-scene opacity reveal now runs on the main timeline
at global time, since a sub-composition timeline cannot reach host elements.
- Make the sub-composition a transparent overlay shell (background: transparent)
and stack it above the host video so the type renders over the footage.
- Drop the crossorigin attribute (plain displayed media never needs it) and mark
the audible footage with data-has-audio="true".
- Replace the three CSS translateY values that GSAP would overwrite with
fromTo tweens (carson-line-1, wes-text-top, wes-text-bottom).
- Swap the unbundled Libre Baskerville for the bundled Playfair Display serif so
the renderer can supply the Wes Anderson typography, and drop the redundant
-apple-system token from the body font stack.
lint reports 0 errors, validate passes, and frame extraction confirms the A-roll
composites correctly under every type scene.
* docs(examples): note the A-roll reveal-time coupling to the sub-composition
CI failures were two root causes (preview-regression was a cascade — its gate
mirrors preview-parity, which was skipped because the Preflight lint+format job
failed):
- Preflight (lint + format): the migrated registry comps (flowchart,
flowchart-vertical, liquid-glass-notification, vignette demo) were committed
unformatted — the lefthook format step only ran oxfmt on staged TS, not HTML,
so `oxfmt --check .` failed in CI. Ran oxfmt on all four. The vignette title's
per-glyph spans use oxfmt's `</span>`-split form, which keeps the glyphs
adjacent (no inter-element whitespace), so rendering is unchanged.
- Skills: manifest in sync: the pre-commit hook's manifest generator and CI's
canonical `gen-skills-manifest.ts` produced different content hashes for the
same skill; regenerated with the canonical generator so the committed manifest
matches what CI computes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The previous fixHint and skill guidance told agents to "settle via scale" for
text-reflow props — but uniform scale resizes the glyphs, it does not change
the gaps between them, so swapping a letterSpacing tween for scale lints clean
while silently animating a different thing.
Make the guidance faithful per property:
- fontSize -> scale (same visual, sub-pixel smooth).
- letterSpacing / wordSpacing -> split the text into per-character elements and
animate each glyph's x (the spread); uniform scale is NOT equivalent. Or hold
the value statically if it's a minor flourish.
Add a "preserve the intent" principle to gsap-transforms-and-perf.md: a fix must
reproduce the same start/end state and trajectory and be verified against the
ORIGINAL render, not just pass lint — lint-clean-and-smooth is not the bar,
faithful-and-smooth is.
Redo the vignette demo title with the faithful per-glyph x spread (15.12px =
(0.32em-0.18em)*108px, centered about 8 chars). Render-verified: settled
endpoint matches the original at 46.5 dB, settle is smooth (24/24 unique frames).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Extend the rule beyond positional layout props to the text-reflow props
letterSpacing / wordSpacing / fontSize. Animating them reflows text and snaps
glyph positions to the pixel grid, so a slow ease-out tail micro-stutters
exactly like left/top — measured on a real composition, a slow letterSpacing
"settle" rendered 19/30 unique frames vs 30/30 for the transform-driven
motion in the same piece. They have no transform replacement (fix: settle via
scale or hold the value), and the snap happens during browser layout, upstream
of the canvas raster, so they are never html-in-canvas-exempt. width/height
stay excluded (legit animated uses — progress bars, reveals).
Restructure the finding's message/fixHint to compose per category (positional
-> x/y; reflow -> scale/hold; roundProps -> remove) instead of a two-branch
ternary. Skill guidance (gsap-transforms-and-perf.md) broadened: "layout
property" includes reflow; letterSpacing/fontSize named as the settle-trap.
Migrate the one surfaced positive: registry/components/vignette/demo.html
title settle letterSpacing -> a subtle scale settle (render-verified 20/20
unique frames, smooth). Blast radius across the registry was this one comp,
zero false positives.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Animating layout properties (left/right/top/bottom/margin*) or using
roundProps snaps motion to integer device pixels. Under the seek-by-frame
capture engine this is invisible at high per-frame deltas (fast tweens) but
visibly stutters at low deltas (slow tweens / ease-out tails): sub-pixel
movement rounds to the same pixel for several frames, then jumps a whole
pixel. Transforms (x/y/scale) interpolate sub-pixel and stay smooth.
New rule gsap_non_transform_motion (error):
- Sources timeline tweens from the acorn parser's full animation list, so
label- and relative-positioned tweens (tl.to(..., "label") / "+=1") are
covered and real AST keys avoid phantom-prop / nested-brace misreads.
- Exempts html-in-canvas elements (a <canvas layoutsubtree> ancestor): they
are rasterized from sub-pixel getComputedStyle and do not integer-snap.
Per-element resolution, so a grouped glass+text tween still flags the
plain-DOM half. roundProps is never exempt (it rounds before the style).
- Uses Object.hasOwn for the layout-prop lookup, skips set(), and merges
standalone gsap.* calls.
Migrated 9 registry compositions off layout-prop animation onto transforms,
each render-verified visually identical:
- liquid-glass-{notification,widgets,media-controls,context-menu}: plain-DOM
text overlays -> transforms; glass panels stay on left/top (canvas-exempt).
- vignelli: curtain wipes left:% -> xPercent.
- lt-mask-reveal: sweep left:% -> x px.
- flowchart, flowchart-vertical, decision-tree: cursor paths left/top -> x/y.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(core): register sub-composition timelines after async build + lint rule
When a composition builds its GSAP timeline inside document.fonts.ready (or any
async callback), registering window.__timelines[id] BEFORE the build leaves an
EMPTY timeline registered. The runtime's sub-composition readiness gate treats
"key present" as "ready" and nests the child once — an empty timeline gets
nested empty and is never re-nested, so the frame renders blank when used as a
sub-composition.
- registry/blocks/code-{diff,highlight,morph,scroll,typing}: register the
timeline AFTER the fonts.ready build completes, then call
window.__hfForceTimelineRebind() to re-nest now that it is populated.
- core lint: add rule gsap_timeline_registered_before_async_build to flag the
early-registration anti-pattern, with tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* test(studio): import commitGsapPositionFromDrag from its actual module
The function was split out into gsapDragPositionCommit.ts in #1605, but the
test kept importing it from ./gsapDragCommit, which no longer exports it —
yielding 'is not a function' at runtime. Import from the correct module.
Inherited main breakage (same fix as #1631/#1635); fixes the Test CI check on
this branch independently of merge order.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(slideshow): address code-review findings #1580-1584
- player: bundle @hyperframes/core into the IIFE/global build (noExternal)
- player: resolve audience mode from ?mode=audience URL query, not just attr
- player: event-driven waitForScenes + loud failure when no slides resolve
- player: scope window keydown so Space/Backspace don't hijack the host page
- player: audience mirrors full position (branch + fragment) via syncTo
- player: next() reveals remaining fragments even at slide end; enterBranch ignores empty sequences
- core: harden extractScenes against null/non-object scene entries
- core: strict manifest validation; error on inverted ranges & empty hotspot targets; dedup fragments
- core/lint: accept data-end/timeline-derived scene durations (match runtime)
- core+studio: share ISLAND_TYPE + island regex from @hyperframes/core/slideshow
- studio: SlideList reflects manifest slide order; branch-slide authoring (notes/fragments/hotspots)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(player): slideshow fullscreen + presenter-view rework
- fullscreen toggle in the nav chrome (button + 'F' key); standard Fullscreen
API on the <hyperframes-slideshow> element, icon reflects state
- presenter console: live slide on top, speaker-notes panel below, with the nav
controls shown in-view; Present button hides once presenting (harness)
- audience (viewer) window: chrome reduced to a fullscreen-only control, no nav
- fix: audience / back() / backToMain() mirror stayed frozen on the first frame —
a bare paused seek does not repaint some compositions. resumeSlide now plays a
brief render-nudge (RENDER_NUDGE) past the target so the composition paints,
then onTime pauses at the hold
- refactor: extract reusable buildNavCluster() + wireChromeButtons(); rework
buildPresenterLayout into the bottom notes panel
- example: airbnb-deck presenter-test.html harness (Present button + 'F')
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(player): slideshow no auto-progress + presenter slide fits/pins
- navigation jumps to a static frame instead of auto-playing the timeline:
playTo() seeks to the hold (+ a brief RENDER_NUDGE to repaint) rather than
sustaining playback, so slides hold until the user advances
- presenter view: pin the live slide to the top and confine the player to the
region above the notes panel, so the player CONTAINS the composition — the
full slide stays visible (letterboxed) at any width and re-fits on resize;
its bottom is no longer cut off by the notes panel
- tests: seek targets updated for the render-nudge offset
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(slideshow): presenter nav flash, slide-1 boundary, branch buttons
Three presenter-mode fixes from testing the airbnb deck: (1) navigation flash — seek to the exact target then play forward to repaint, instead of seeking backward (t-0.2) which painted the previous scene at boundaries; split hold into holdTarget (logical) and holdAt (target+nudge, clamped to slide.end). (2) slide-1 boundary — no-fragment slides rest at the slide midpoint, not slide.end. (3) presenter branch buttons — surface hotspots as buttons in the presenter console (the on-slide pill is lost in the letterboxed view). Also extract paintChrome() to dedupe the three chrome-render sites.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(slideshow): stop presenter nav buttons flickering / dropping clicks
The presenter elapsed clock called render() every second, which rebuilt the
entire chrome (innerHTML) including the nav buttons — they flickered and any
click landing mid-rebuild was lost. The 1s tick now updates only the elapsed
text node; the nav buttons are rebuilt only on actual navigation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(slideshow): CSP-safe nav hover, UUID editor ids, manifest version
Addresses review feedback on the split stack:
- CSP: replace the 8 inline onmouseover/onmouseout handlers on the nav
buttons with a [data-hf-nav-cluster] button:hover CSS rule (injected once
per document). No inline event handlers → works under strict CSP.
- IDs: studio sequence/hotspot id generation used Date.now() (sub-ms
collision on rapid clicks) — now crypto.randomUUID().
- Versioning: stamp version on the persisted manifest island (preserving an
existing one); add the optional version field + SLIDESHOW_MANIFEST_VERSION
to the core schema so future schema changes can migrate older islands.
These live on the review-fixes tip (consistent with the stack's fixup-on-tip
model); the touched code belongs to ss-player-b (#1590), ss-studio-a/b
(#1591/#1592), and ss-core (#1580).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* chore(ci): fix format + fallow gates for slideshow stack
- .prettierignore: exclude generated demo compositions (registry/examples/**/*.html)
from oxfmt — large video-pipeline output (GSAP/Three/WebGL), not hand-authored
source. Was failing 'Format' repo-wide (pre-existing on main via #1584).
- .fallowrc: exempt SlideshowPanel.tsx (health/complexity — section fan-out) and
the slideshowPanelHelpers.ts / SlideshowPanel.test.ts parallel-structure clones
(duplicates.ignore). File-level config, not inline comments — inline shifts line
numbers and breaks fallow's inherited-finding fingerprint (per existing rc note).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(slideshow): address PR review + CodeQL findings
- CodeQL #638 (parseSlideshow): complete the regex metachar escape in
slideshowIslandRegex (was missing backslash); add JSDoc on the factory +
lastIndex caveat (reviewer 5a/16).
- CodeQL #639/#640 + review items 13/17: remove registry/examples/airbnb-deck/
presenter-test.html — a generated test harness (postMessage w/o origin check,
proto-pollution) that was scope-creep into a fix PR and a 3rd duplicate island.
Regenerate locally via the scratchpad script when testing.
- Review item 15 (docs drift in skills/slideshow/SKILL.md): lint resolves scenes
by data-composition-id only (not .clip[id]); fragments are valid INCLUSIVE of
[start,end], not 'strictly inside'.
IIFE bundles core confirmed (0 external @hyperframes/core refs in the slideshow
global build). format/lint/fallow green.
* feat(cli): add 'present' command — serve a deck in presenter mode
hyperframes present [dir] starts a lightweight HTTP server, wraps the
composition in <hyperframes-slideshow> with its island inlined, and opens
the browser. A real HTTP origin is required for presenter mode: present()
opens the audience window via window.open(?mode=audience) and the two sync
over BroadcastChannel — neither works from file://.
- New utils/compositionServer.ts factors the server scaffolding shared with
'play' (resolve runtime/player/slideshow bundles, inject runtime, asset
content-types, bind to a free port); play.ts now uses it too.
- Errors clearly if the deck has no slideshow island.
- .fallowrc: exempt the play/present command entrypoints (validation + server
wiring) and the per-command startup/logging block from the complexity /
duplication gates.
Verified end-to-end against registry/examples/airbnb-deck: server serves the
wrapper + assets, the component binds and renders (counter 1 / 11).
* fix(cli): present renders the deck (player sizing + self-driving serve)
Two bugs caused a black slide area:
- The <hyperframes-player> had no positioning, so its iframe collapsed to
zero size — the (absolutely-positioned) chrome showed but the composition
didn't. Add position:absolute; inset:0 (matches demo.html).
- The composition was served with the engine runtime injected, which leaves
its timelines engine-paused (blank). Slideshow decks self-drive their own
timelines (like demo.html / the standalone harness), so serve them raw.
Verified end-to-end on registry/examples/airbnb-deck: cover renders, Next
advances 1/11 -> 2/11 and slide 2 paints.
* fix(cli): present plays slideshow sound effects
The composition (in the player's sandboxed iframe) posts
{ type: 'hf-sfx', name } to the parent on nav, but the iframe is
autoplay-blocked — audio must play in the parent that owns the user gesture.
Add the parent-side hf-sfx handler (the 4 standard clips advance/fragment/
branch-enter/back, served from the deck's sfx/ under /composition/sfx/),
gesture-unlocked and mute-aware, in both presenter and audience windows.
Verified: sfx serve 200 (audio/mpeg) and Next delivers [advance, fragment]
to the parent handler.
* feat(examples): softer mellow slideshow sfx for airbnb-deck
Replace the aggressive percussive pops with gentle sine-tone cues (warm
pitches C5/G4/E5/F4, 12ms attack + exponential decay, lowpassed) — advance/
fragment/branch-enter/back. Much lighter; fragment is the most subtle.
* feat(examples): whoosh + sparkle slideshow sfx for airbnb-deck
Replace the sine-tone cues with airy, designed sounds:
- advance: a soft whoosh (band-limited pink noise, bell-shaped swell)
- back: that whoosh reversed and darkened
- fragment: a light sparkle (staggered high chime blips)
- branch-enter: whoosh + a trailing sparkle (magical entry)
* feat(examples): directional whoosh + richer branch-enter cue (airbnb-deck)
- Going backward a slide now plays the reverse whoosh (back), not advance —
the sfx logic detects nav direction by scene order instead of firing advance
for every scene change.
- branch-enter is now a more interesting magical cue: a faint whoosh + an
ascending C5-E5-G5-C6 chime arpeggio + a trailing sparkle.
Verified: next then prev fires [advance, fragment, back]; no page errors.
* fix(cli): harden present sfx handler + mute-hover affordance (R2 review)
Addresses Rames R2 items 19-21:
- 20: the present audio handler reintroduced the CodeQL classes removed with
presenter-test.html — add an origin check (same-origin composition iframe)
and an own-property guard so a 'name' like __proto__ can't resolve to and
mutate Object.prototype.
- 21: assetContentType used a bare index lookup (ext='__proto__' -> prototype);
guard with Object.hasOwn.
- 19: the CSP hover rule erased the speaker button's muted color; add a
higher-specificity [data-hf-muted] [data-hf-mute]:hover override.
Verified: hf-sfx origin matches location.origin (guard passes), advance/fragment
still fire, deck renders + advances. Items 14/18/22 deferred (minor, pre-existing).
* fix(slideshow): address remaining R2 items (14/18/22) + re-remove harness
- 14: resumeSlide now mirrors enterSlide — a no-fragment slide resumes at its
midpoint (visible-at-rest), not frame-0; fragmented slides still resume to the
saved fragment or slide.start. Added a dedicated test naming the heuristic.
- 18: fullscreenchange swaps only the fullscreen glyph + aria (hoisted SVGs to
module consts) instead of re-rendering the whole chrome.
- 22: .prettierignore lists the specific generated demo compositions instead of
blanket registry/examples/**/*.html, so hand-authored example HTML still formats.
- presenter-test.html: a stray 54a4460 git add -A had re-added the deleted
harness (reviving CodeQL #639/#640); remove it again.
106 slideshow tests pass; tsc/lint/fallow/format clean; deck still renders.
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* feat(player): slideshow controller state machine
Stack-split from the original ss-player PR (#1581): the SlideshowController
state machine (stack-based slide/fragment/branch navigation) and its tests.
The <hyperframes-slideshow> web component follows in the next PR.
* feat(player): <hyperframes-slideshow> web component + presenter
Stack-split from the original ss-player PR (#1581): the <hyperframes-slideshow>
custom element (wraps <hyperframes-player>, drives the controller),
presenter/audience BroadcastChannel sync, nav chrome, and the player scenes hook.
* feat(studio): slideshow manifest persistence + panel helpers
Stack-split from the original ss-studio PR (#1582): the data layer —
setSlideshowManifest, the useSlideshowPersist hook, and panel helpers.
The editor panel UI follows in the next PR.
* feat(studio): slideshow branching editor panel UI
Stack-split from the original ss-studio PR (#1582): the SlideshowPanel /
SlideshowSubPanels editor UI, right-panel wiring, and app integration.
* docs(skill): slideshow authoring guidance + standalone harness reference
New /slideshow skill (island schema, slide rules, fragments, branching,
validation) + a standalone-harness reference doc, and a router entry in
the /hyperframes skill.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* test(examples): slideshow demos — airbnb deck, startup pitch, fixture
Three runnable slideshow compositions: a current-Airbnb-branded remake of
the 2009 seed deck (Three.js backgrounds, GSAP entrances, hotspot branch,
HeyGen SFX), an animated startup pitch, and a minimal fixture.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(lint): promote rules to errors with registry exemptions and false-positive fixes
- Export isRegistrySourceFile/isRegistryInstalledFile from composition.ts
- Add registry exemptions to google_fonts_import and font_family_without_font_face
- Add registry exemption to requestanimationframe_in_composition
- Fix timed_element_missing_clip_class: data-track-index alone no longer triggers
- Fix caption_transcript_parse_error: balanced-bracket scanner replaces non-greedy regex
- Fix missing_timeline_registry: skips sub-compositions and template-wrapped files
- Fix scene_layer_missing_visibility_kill: strip JS comments before pattern matching
- Fix gsap_css_transform_conflict: exempt from() alongside fromTo()
- Fix gsap_from_opacity_noop: only fires when opacity value is actually 0
- Add regression test for data-track-index-only elements
* test(lint): add regression tests for false-positive fixes
Covers the 7 missing negative-case assertions flagged in PR review:
- registry marker suppresses google_fonts_import + font_family_without_font_face
- registry marker suppresses requestanimationframe_in_composition
- isSubComposition suppresses missing_timeline_registry
- scene_layer_missing_visibility_kill: fires, commented-kill fires, real kill suppresses
- gsap_css_transform_conflict: from() exempt alongside fromTo()
- gsap_from_opacity_noop: non-zero opacity (e.g. 0.5) is a valid reveal, not a noop
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* fix(examples): fix warm-grain template to pass promoted lint rules
- index.html: remove undeclared "Lexend" from font-family stack
- intro.html: replace Google Fonts @import with bundled Inter font
- captions.html: quote TRANSCRIPT keys for valid JSON + use Inter font
Fixes CLI smoke CI failure after google_fonts_import, font_family_without_font_face,
and caption_transcript_parse_error were promoted from warning to error.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* fix(cli): resolve warm-grain from repo registry in dev mode + bundle at build
getStaticTemplateDir now falls back to registry/examples/<id> in dev mode
so CI smoke tests use the PR-branch copy instead of fetching from main.
build-copy.mjs copies warm-grain to dist/templates/warm-grain at build time
so packed CLIs can scaffold it offline.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* fix(examples): remove trailing comma from warm-grain TRANSCRIPT array
JSON.parse rejects trailing commas (valid JS, invalid JSON).
caption_transcript_parse_error was still firing because of the comma
on the last entry after quoting all keys.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Adds a Code Animations catalog section — 9 self-contained, installable blocks:
morph, snippet-flight, typing, diff, highlight, scroll (DOM/GSAP) and 3d-extrude,
shader-dissolve, particle-assemble (WebGL). Each block ships only its own effect and
renders deterministically (paused GSAP timeline seeked per frame, seeded RNG, no
render-time data fetch). Wires the catalog nav, registry.json, a new code-animation
Studio category, and preview assets.
