* docs(lint): add a reference page for every lint finding code
docs/reference/lint-rules.mdx lists every code emitted by the linter
(132: the 121 rule codes in packages/lint/src/rules/*.ts plus the 11
project-level probes that run as part of a project lint) with its
severity, what it catches, and how to fix it, grouped by the rule file
the code comes from. Conditional severities (Studio-host structure
checks, GSAP seek-order hazards) say when they escalate.
Link it from docs/packages/lint.mdx and add it to the Composition
reference group in docs.json.
Issue: #5385
* docs(lint): document the color grading codes and correct four entries
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: James <james.russo@heygen.com>
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Add the four commands that `hyperframes --help` lists but the CLI reference
page left out, with their options taken from each command's args and
examples checked against a sample project.
Closes#5386
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* docs(changelog): weekly digest 2026-10-05–2026-10-12
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* docs(changelog): add the Oct 5-12 weekly video
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* docs(changelog): weekly digest 2026-09-28-2026-10-05
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* docs(changelog): embed the Sep 28 - Oct 5 weekly video
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* feat(audio): composition master bus (data-fx-chain on the root)
A clip can belong to only one audio group, so there was no way to put one
effect, such as a limiter, across the whole mix. The data-fx-chain on the
top-level composition root now runs once over the sum of every clip and every
group, after each group's own chain and fader. No new attribute: a sub-composition
root's data-fx-chain was never applied to anything and still is not.
Render: when a master chain exists, mixAudioTracks writes a float WAV instead
of AAC, applyAudioFxChain runs the chain over it, and ffmpeg encodes AAC last,
so the chain reads unclipped samples. An unreadable chain is a mix failure, as
for a group. Preview: the transport splices the chain between the clips' sum and
the monitor, re-anchored per play generation and watched for edits.
Only the top-level root is read. No master automation: the root's data-automation
is not read as the bus's. No lint rule: data-fx-chain is valid on clips, groups
and roots, and the one place it does nothing (a sub-composition root) has always
been silent.
— Jerrai
* fix(core): preview routes every audible video through the master bus
A root data-fx-chain is attached only inside the Web Audio graph, but a plainly
audible <video> joined that graph only for its own chain, group, automation or a
volume over 1. So preview limited the music and left the talking head dry, and a
composition whose only audio is video got no master chain at all, while export
sums every audible element into the master. A master chain on the top-level
composition root is now a reason to join, the same as a video's own chain.
Elements under a root with no chain keep native output. Sub-composition roots
are still ignored.
— Jerrai
* fix(audio): master bus review round 2 (temp dir, tests, docs, Studio meter)
- audioMixer: a fatal FX error in the master pass or a group bus left the
work directory (the full float sum, about 1.4 GB an hour) on disk. The
final mix now runs in try/finally and the group rethrow removes it first.
- Tests: the "once over the sum" case now uses a limiter then a gain, so a
per-clip chain (-10.4) and a doubled one (-18) both fail it; a new case
proves the sum stays float until the chain reads it; the fader case uses
a group volume of 0.5 so the fader's position is exercised; the work-dir
removal is covered for both paths.
- Docs: "Three rules exist" (the master-bus lint rule is gone), a bad master
chain stops the render with audio_processing_failed, a sub-composition
file opened on its own has its root chain as the master bus, and a seek
clears a group or master limiter.
- Studio: TimelineElement.masterChain carries the root's data-fx-chain, so
the program meter shows for a video-only composition whose only audio
routing is the master chain, as preview now plays it.
- Comment blocks over four lines cut; webAudioTransport.setRate split so
its CRAP score is under the Fallow threshold.
— Jerrai
* fix(audio): master chain reaches tracks the render adds; honest plain-limiter copy
- Master chain: it was carried on each parsed AudioElement, so a track the
producer adds itself (appendAutoDetectedVideoAudio, the browser-discovered
audio in probeStage) never had it, and a composition whose only audio was
such a track exported with no master chain, no ceiling and no warning. It is
now a composition property: parseMasterFxChain(html) at compile, carried on
CompiledComposition and CompositionMetadata, passed to processCompositionAudio
by runAudioStage (in-process and distributed plan). AudioElement.masterFxChain
is removed so there is one source. Each forward (compile stage, local
orchestrator, distributed plan) has a test that fails when it is dropped.
- Plain limiter: it follows the level with no lookahead and Level after is
applied past the ceiling, so it cannot promise "nothing gets past" or "never
clips". Studio copy (description, panel text, knob label, summary) and the
hyperframes-audio skill now say a fast or inter-sample peak can pass it and
point to the true-peak limiter for a delivery limit. A copy test guards it.
— Jerrai
* fix(producer): keep master bus comments within the ratchet; run the plan test with the ffmpeg tests
Drop three one-line field comments that raised their files' comment share,
and list plan.masterBus.test.ts with the integration tests because plan()
reads the ffmpeg version.
— Jerrai
* chore(ci): repin the producer test-classification source in the reachability map
The reachability map pins the hash of test-classification.mjs, which now
lists one more integration test. The map's producer lane command already
covers every test under src, in both the unit and integration matrix lanes.
— Jerrai
* fix(cli): media-treatment applies one treatment to every matched image or video
* fix(cli): media-treatment reports its action from every target and documents the per-element merge
* fix(cli): media-treatment patches each match by its stable id so one write cannot redirect another
* fix(cli): media-treatment sets every match in one parse instead of re-finding elements
* fix(cli): media-treatment refuses media that is not an HTML element, as before
* chore(skills): refresh the media-use manifest hash for the treatment reference edit
* fix(studio): text in Studio reads without em or en dashes
* fix(studio): the dash check also catches HTML entities, and peak reads Unavailable
* test(studio): the dash check test covers every entity form
* fix(studio): messages Studio shows from lint, sdk, core and the renderer drop dashes too
* fix(producer): the gate check stops early on the engine's new fallback wording
* feat(core): add a lookahead true-peak limiter FX (truepeak)
The existing limiter is an envelope follower with no lookahead and no
inter-sample detection, so a -14 dB ceiling can leave the true peak several dB
over. truepeak estimates the true peak on a 4x polyphase interpolator, takes the
minimum required gain over a lookahead window and smooths it with a boxcar of
the same length, so the gain is already down when the peak leaves the delay
line. Release is exponential and can only lower the gain further; channels
share one gain.
The offline render lengthens the OfflineAudioContext by the chain's latency and
drops the lead-in, so a limited clip stays sample-aligned with its source.
Preview plays the lookahead (about 3.3 ms at the default).
— Jerrai
* docs(audio): truepeak ceiling is a 4x estimate; measure it with an ideal interpolator
The unit test's meter was a 96-tap Kaiser sinc, which rolls off near Nyquist and
reads full-band noise about 0.5 dB low, so the PR reported a 0.3 dB broadband
overshoot. Against an ideal 16x interpolation (zero-padded FFT, cross-checked with
a 16x soxr resample) hot full-band white noise ends 1.2 to 1.7 dB over the ceiling
(median 1.4 over 28 runs of 10 to 30 s). ffmpeg's ebur128 true peak is also a 4x
meter and reads the same files 0.1 dB over.
- The test meter is now the FFT interpolation. Tolerances are what it measures on
each fixed signal: tones 0.01 dB (they land on the ceiling), the dense program
0.5 dB (reads 0.445, the old 0.4 passed only because the meter read low), and a
new full-band noise case at -1, -6 and -14 dBTP with 1.35 dB (reads 1.09 to 1.31).
- audio-effects.mdx and the hyperframes-audio skill say the ceiling is a 4x
estimate, give the measured overshoot and recommend a 2 dB margin under a hard
delivery limit.
- skills-manifest.json regenerated.
— Jerrai
* fix(core): truepeak UI copy no longer promises a hard ceiling
The registry description and the rack summary said the true peak is never above
the ceiling. The limiter holds a 4x estimate, and full-band noise can land up to
about 1.7 dB above it, as the docs now say. The summary reads "held near", the
description names the estimate and the overshoot, and the rack blurb says "holds
... to a ceiling". No skill file changed, so the skills manifest is unchanged.
— Jerrai
* fix(core): Studio truepeak copy states the 4x-estimate margin
The ceiling control was labelled "Never exceed" and the module said the mix
"must not clip", so a Studio user never saw that dense full-band content can end
up to about 1.7 dB above the ceiling. The label is now "Target ceiling" with a
hint that names the 4x estimate and the headroom to leave, the blurb says
"toward a target ceiling", the rack summary says peaks are pulled down toward the
value, and the registry hint no longer says "highest true peak allowed". The
audio skill's "hard dBTP ceiling" wording is gone and the skills manifest is
regenerated. A copy test keeps the promise out.
— Jerrai
* fix(core): truepeak clears on a seek, and the review nits (fallow, comments)
- Unexport TRUE_PEAK_OVERSAMPLE, TRUE_PEAK_DETECTOR_DELAY and
truePeakLookaheadSamples: nothing imports them (Fallow audit).
- A persistent group bus keeps its chain across a seek, so the limiter's
delay line and held gain carried over. The worklet takes __hfReset, the
graph exposes FxChainHandle.reset(), and reanchor() calls it.
- The processor-loading harness is shared by the truepeak and worklet tests
(it was a 12-line clone); the test FFT no longer repeats audioCarve's
bit-reversal; two test bodies are under the CRAP threshold.
- Comment blocks cut to four lines or fewer (Comments check).
- Docs state the preview delay in ms.
— Jerrai
* fix(cli): check passes a still title card whose timeline follows the seek
* fix(cli): check warns on a still frame and fails only when an animation is stuck
* fix(cli): count a seek clock once per sample and point the error at the registered timeline
* fix(cli): judge a finished animation by its own completion state, not its end time
* test(cli): pin a Web Animation paused at its end as finished
* fix(cli): judge a reversed animation's end in its own direction, and read plain timelines
* test(cli): pin a plain timeline held at its end as finished
* test(cli): keep an unfinished plain timeline beside the finished one
* fix(cli): skip a timeline whose time cannot be read instead of calling it stuck
* fix(cli): skip an animation whose time is not a plain number, such as a scroll-driven one
* fix(cli): a partial timeline with plain values no longer stops the browser checks
* feat(cli): let transcribe --to write srt or vtt straight from a media file
* fix(cli): fail a missing transcribe --output folder before decoding
* fix(cli): reject a transcribe --output that names a folder
* test(cli): check CJK caption grouping on the parsed cues
* fix(cli): keep transcribe --output from overwriting the media or its transcript
- Refuse an --output that resolves to the input file or the transcript.json the run writes,
before the engine starts.
- When the caption file cannot be written after transcribing, say the transcript was saved
and name the caption path and reason, instead of reporting a failed transcription.
- Docs: a one-run export groups cues for languages without spaces; exporting the saved
transcript later may split them differently.
* fix(cli): refuse caption paths that alias the media or transcript
- The overwrite check compares files, not path text: an existing target is matched by device
and inode, a new one by its real folder and its name ignoring letter case. Links, folder
aliases such as /var and /private/var, and other letter case are all refused.
- The check also covers the default caption path, so exporting transcript.srt to srt no
longer rewrites its own input.
- A trailing -o with no path fails before transcribing.
- One constant names transcript.json for the engines, the import and the check.
* fix(cli): refuse caption links to the transcript before it exists
- A caption path that is a link is followed to where the write would land, so a link to the
transcript.json the run is about to create is refused before transcribing.
- A test pins the folder letter-case check on a case-insensitive disk, and says which branch ran.
* fix(cli): check the caption file against the transcript right before writing it
- Right before the caption write, by when the transcript exists, a destination that is the
same file as the input or transcript.json is refused. The OS resolves every link, relative
link and alias, so the hand-written link following is gone.
- The run keeps the transcript and says the caption file could not be written and why.
An export whose caption write fails now says so too, instead of crashing.
- The check before transcribing stays as an early refusal for the common cases.
* fix(cli): compare caption paths by name when the disk reports no inode
- Some network shares report inode 0 for every file; such a pair is compared by folder and
name instead of being called the same file. The check before transcribing and the one at
write time now share one comparison.
- The link-through-a-file tests accept ENOENT as well as ENOTDIR, the code Windows reports.
* fix(cli): resolve both caption paths fully when the disk reports inode 0
- When either file reports inode 0 and both exist, compare their fully resolved real paths,
so a link to the media or the transcript is still refused. The folder and name compare
stays for a path that does not exist yet.
- Tests zero the inode on every path, on the caption path only, or on the protected file only.
* test(cli): say plainly why the caption-write test accepts two error codes
* docs: clarify async font measurement and timeline registration
* chore: align skill manifest with main before regeneration
* chore: regenerate animation skill manifest
* feat(cli): models list shows which speech models transcribe can use
* refactor(cli): models list and transcribe share one Parakeet runner check
* fix(cli): models list skips whisper links transcribe would download again
* style(cli): keep models list comments under the package share
* perf(producer): extract distributed video frames in each chunk
Plan v2 no longer extracts long constant-frame-rate videos. It ships
each source once and every chunk extracts only the frames it shows, so
Plan time stops growing with video length (#5260).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* docs(aws-lambda): plan no longer bounds video length
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* test(producer): pin deferred compiled sources to every chunk
Each chunk's page loads every <video> src during session init and a
missing file fails the chunk, so a deferred source under compiled/ must
keep reaching every chunk, as it does on main.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* fix(engine): extract long video ranges in segments and keep plan uploads flowing
A distributed render's plan step extracted a whole video in one ffmpeg process,
so a long clip hit ffmpegProcessTimeout (300 s) however much of Lambda's
15-minute limit was left, and every frame then uploaded in batches of 16 that
each waited for their slowest blob.
Ranges longer than two minutes now extract as two-minute segments that run side
by side, each numbered after the last. They sample the same absolute times as a
single pass, so the frames are byte-identical (checked on a 26-minute, 37,440
frame clip). Plan v2 publishing keeps 32 uploads in flight instead of batching.
On a 10 GB Lambda the 26-minute clip's plan step fell from 395 s to 200 s.
The Lambda docs now state the plan-step length bound.
Fixes#5260
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* fix(engine): split extraction on an integer frame count
The split compared and subtracted float seconds, so 200.3 - 80.3 became
120.00000000000001 s: a second segment got `-t 1.42e-14`, which ffmpeg
rejects, failing an ordinary two-minute range. The frame count now comes from
extractionFrameCountForDuration, the rule a single pass follows, and every
segment takes an exact frame count.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
* fix(cli): enforce capture screenshot limits and report interruptions
* refactor(cli): split screenshot step out of capture animation phase
Keeps the screenshot limit outside the mirrored core-extraction argument
list and moves scroll screenshots into their own step, so both stay under
the audit's duplication and complexity gates with no behaviour change.
* fix(core): write only authored hue curves, so a single hue curve passes lint
* fix(cli): apply over a grading saved with empty hue curves instead of refusing it
* fix(core): read grading properties from computed style, and stop advising an inline start
* fix(cli): preserve validation during legacy hue repair
* fix(cli): preview grading writes without apply
* fix(auth): accept host-managed HeyGen access tokens
* fix(auth): share environment header validation
* docs(auth): condense credential resolver guidance
* fix(auth): report the account a browser login just signed in
Identify the account from the tokens the login issued, not a fresh credential
lookup that an environment token or API key outranks.
* docs(auth): list the host access token in the CLI credential order
* fix(cli): name a rejected host access token on publish
Publish told a host-token user to log in again, which cannot help while the token outranks the login.
* docs(auth): show the media credential order main resolves
* fix(cli): warn at logout that a host access token still signs commands
One map of environment credential variables, owned by the resolver, now feeds the logout warning and both publish messages.
* docs(auth): scope the media credential order to the audio scripts
* refactor(cli): read every env credential name from the resolver's map
* fix(media-use): use a host app's music tools; fail loudly without the heygen CLI
* fix(media-use): name the heygen CLI only for music and sound effects; keep the sfx test offline
* fix(skills): workflow skills use a host app's own music tools first
* fix(skills): say how a host app's music track reaches the narrated workflows
* fix(skills): set a host app's music track after the last audio pass
* fix(skills): a host-music film with no narration still fetches its sound effects
* fix(media-use): keep the stub-failure test off the machine's heygen CLI; sync the skills manifest
* fix(skills): audio passes keep a host app's music and sounds; silent needs no sound cues
* fix(skills): host audio keeps string frames, stops on a broken audio_meta.json, survives a re-run
* fix(skills): report a host audio entry with no path and a broken sidecar instead of crashing
* fix(skills): keep host audio written while an audio pass runs
* test(cli): serve the telemetry capture while the resolve child waits on it
* test(cli): fail the telemetry capture when the resolve child exits non-zero
* style(skills): wrap the host audio comment to the 120-column limit
* docs(skills): ask agents inside a host app to report its friction as feedback
* feat(cli): send missing features and host-app friction as ratingless feedback
* fix(cli): keep the rating error, refuse blank reports and document ratingless feedback
* docs(skills): leave names and figures out of missing-feature reports
* docs(skills): keep anything private out of missing-feature reports
* fix(check): see color, filter and media time under seek, and name data-no-timeline for stills
* fix(check): warn instead of fail when only audio advances, and judge text overlap on glyphs
* fix(check): judge glyph overlap by the glyph box, and see capitalized words and one-side borders
* fix(check): capitalize past leading punctuation, test outline color, trim a comment
* fix(check): capitalize words the way Chromium does, so digit-led words stay lowercase
* feat(core): support deterministic async frame sources
* feat(core): bridge preserved film HTML to native capture
* feat(core): bound imported scene timing to source intervals
* test(producer): verify film bridge pixels in real browser
* fix(runtime): retain queued draws and disable unsafe dedup
* fix(runtime): fail promptly on runner reloads and send errors
* fix(runtime): align film draws with export windows
* docs(core): mark frame-source hosts with data-no-timeline
A composition that follows the frame-source contract registers no GSAP
timeline, so lint reported missing_timeline_registry and every render
waited 45 s for timeline registration (17.6 s -> 1 min 47.9 s for the
14 s imported film sample). Document the existing data-no-timeline
opt-out for the host and a timeline-less root.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* docs(core): require data-no-timeline on imported film hosts
Imported film wrappers have no GSAP timeline. Without data-no-timeline
on the scene hosts and root, lint fails with missing_timeline_registry
and each render waits 45 s for timeline registration.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(runtime): avoid transport redraws after render seeks
* test: set explicit film fixture canvas background
* test: diagnose film capture timeout phase
* test: foreground film pages before screenshot capture
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* feat(core): support deterministic async frame sources
* feat(core): bridge preserved film HTML to native capture
* fix(runtime): retain queued draws and disable unsafe dedup
* fix(runtime): fail promptly on runner reloads and send errors
* docs(core): mark frame-source hosts with data-no-timeline
A composition that follows the frame-source contract registers no GSAP
timeline, so lint reported missing_timeline_registry and every render
waited 45 s for timeline registration (17.6 s -> 1 min 47.9 s for the
14 s imported film sample). Document the existing data-no-timeline
opt-out for the host and a timeline-less root.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* docs(core): require data-no-timeline on imported film hosts
Imported film wrappers have no GSAP timeline. Without data-no-timeline
on the scene hosts and root, lint fails with missing_timeline_registry
and each render waits 45 s for timeline registration.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(runtime): avoid transport redraws after render seeks
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* feat(core): support deterministic async frame sources
* fix(runtime): retain queued draws and disable unsafe dedup
* docs(core): mark frame-source hosts with data-no-timeline
A composition that follows the frame-source contract registers no GSAP
timeline, so lint reported missing_timeline_registry and every render
waited 45 s for timeline registration (17.6 s -> 1 min 47.9 s for the
14 s imported film sample). Document the existing data-no-timeline
opt-out for the host and a timeline-less root.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(runtime): avoid transport redraws after render seeks
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* fix(cli): let parakeet-mlx detect the language and name the Parakeet install under auto
* docs(cli): say what --language does under each engine
* docs(cli): whisper transcribes as the --language, it does not filter
* chore(cli): drop a comment the install-hint condition already says
Xuanru Li