docs(changelog): weekly digest 2026-08-24–2026-08-31

[jrusso1020]

What

Weekly digest for 2026-08-24 through 2026-08-31, covering 71 commits on main.

Generated with bun run changelog:weekly, then rewritten to publish quality:

• Grouped by theme rather than the generator's Highlights / Also notable split.
• Every entry keeps its commit and PR links. Full SHAs were resolved with git rev-parse rather than typed by hand.
• The TODO: review marker is removed.
• Short declarative sentences.

Why this shape

The generator surfaced 10 of 71 commits and split them by prominence, which buried the week's actual story. Two threads ran through this week and now lead the entry:

1. Studio became agent-drivable over WebMCP (feat(studio): expose Studio's live state to an agentic browser (WebMCP) #3511, feat(studio): fall back to a WebMCP polyfill where the browser has none #3514, feat(studio): let an agent drive Studio's selection and playhead #3515, feat(studio): give an agent eyes with studio_frame #3516, feat(studio): let an agent edit text and styles, guarded #3518).
2. Renders and playback got stricter about failing loudly instead of passing silently (fix(producer): enforce video extraction failures by default #3526, fix(engine): fail render on sub-composition script failures (#3352) #3528, fix(producer): assert render artifact duration and frame count before commit #3506, fix(engine): treat a sentineled cache entry with no frames as a miss #3434, fix(player): report and fail closed on runtime delivery errors #3472).

Scope

Only docs/weekly-updates.mdx is touched. The generator also writes updates/weekly/ and updates/social/; those are left untracked, matching prior weeks.

One pre-existing em-dash remains at line 228 in a much older entry. Left alone deliberately, since it is outside this change.

Just leave comments if you want anything reworded.

Drafted by Rames

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Project	Status	Preview	Updated (UTC)
hyperframes	🟢 Ready	View Preview	Aug 31, 2026, 4:36 PM

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[jrusso1020]

Weekly video is up and embedded in this PR (249259e31).

https://static.heygen.ai/hyperframes/changelog-videos/weekly-changelog-aug24-31.mp4

1080x1080, 50.0s, Annie VO. Built from the changelog-video skill's scaffold and assets. Five theme scenes, each an animated mock rather than a bullet list:

#	Scene	Visualization
01	Agent control	Studio editor mock; agent tool-call chips drive the playhead and selection
02	Eyes and edits	frame read-back card + a guarded inspector value swap
03	Write-on	hw-write-title drawing itself on, with its control surfaces
04	Fail loudly	render panel stalls; toasts carry the reason; artifact checks tick
05	Cache and playback	an empty cache hit becomes a miss and does the real work

Gates:

• hyperframes check (repo-local CLI, caption zone at y0=.90, severity error) — 0 errors, contrast 82/82 WCAG AA. Two remaining lint warnings are inherent to the single-doc master the build spec prescribes (composition_file_too_large, timeline_track_too_dense).
• Seam gate — 0 fail, 0 warn across 6 seams; every cut lands in a real silence gap between VO phrases, exits still moving, entries mid-flight.
• Caption presence — verified on the rendered MP4 at all seven scene midpoints, plus not-black and not-frozen checks.
• Render artifact validated (duration + frame count, 1500/1500 frames).

One thing worth a second opinion: WebMCP was not in the skill's pronunciation lexicon. I used "web M C P", derived from the two in-lexicon precedents (WebGL -> "web G L", MCP -> "M C P"), and the TTS did read it letter-by-letter as intended. If that sounds wrong to anyone's ear, it is a one-line lexicon fix and a VO regen.

• Rames Jusso

[miguel-heygen]

Exact-head review at 249259e31fde87456dbef7a00c753fab78d0d656.

Strengths

• docs/weekly-updates.mdx:21-26 uses the existing Frame > DocsVideo convention and the file's existing import rather than introducing a second embed shape.
• docs/weekly-updates.mdx:32-80 is source-traceable: every linked commit resolves on main, every linked PR is merged, and the PR titles/merge commits support the digest copy. The v0.8.13 through v0.8.20 release range also falls inside the stated week.
• The hosted asset returns HTTP 200 as video/mp4 and probes as 50.000s, 1080x1080, 30fps H.264 with AAC audio.

Exact-head CI is green: 17 passed, 28 skipped, 0 failed, including Validate docs, Mintlify Deployment, Format, CodeQL, and both Analyze lanes.

Verdict: APPROVE
Reasoning: The digest is accurate, convention-matched, fully source-linked, and the embedded video plus documentation gates verify cleanly at the required latest head.

-- Magi