Add entry bridges (each naming a specific Level 1-3 artifact the
capability slots into) and literal exit bridges across the 7 Level 4
Substance pages, per the novice-to-advanced restructure plan.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Level 2 (anatomy, specification-dial, vocabulary, visual-specs, examples)
gets entry/exit bridges tying it into the Level 1 -> Level 3 arc, plus a
short note on the composition-structure mandate (0aaac7aa3 / PR #2599)
showing the framework enforces its own version of the prompt skeleton.
All existing prompts, renders, and tables are untouched.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
* docs(changelog): weekly digest 2026-07-13–2026-07-20
* docs(changelog): embed the weekly video in the Jul 13-20 digest
Adds the Jul 13-20 changelog video (produced via the changelog-video
skill, hosted at static.heygen.ai) at the top of the Update block using
Mintlify's <Frame> component with a native <video controls>.
Video URL: https://static.heygen.ai/hyperframes/changelog-videos/weekly-changelog-jul13-20.mp4
Slack thread: C0ACCNHLG3U · 1784565857.520599
The Claude Design Send-to guide rendered at its URL but was an orphan — absent from the
docs nav and llms.txt, so it never surfaced as a fetchable search RESULT (only as body
text in another page's excerpt, which Claude Design's web_fetch rejects). Add it to the
Guides nav (→ llms.txt index) next to claude-design, and give it frontmatter title +
description for a clean entry. This makes the full guide discoverable + fetchable via
search, the reliable path since a URL named only in a tool description is not fetchable.
* docs(guides): resolve the fidelity contradiction (preserve substance, adapt form)
The guide called the rebuild 'lossy by nature' while the checklist demanded 'content
match the brief exactly', with no rule for what to preserve vs adapt. On a live import
CD kept fonts/palette/hero but genericized the source's real figures (2.4M signals/sec,
+240% spike) into vague phrases. Resolve around one principle: substance (real copy,
exact palette/fonts, distinctive figures/data, product names, signature visuals) is
preserved verbatim; only the form (static page to timed multi-scene motion) adapts.
* test(guides): pin the Send-to fidelity contract against silent regression
Address review on #2620: the resolved 'preserve substance, adapt form' instruction is
load-bearing LLM-facing prompt text, but validate-docs only proves syntax. Add a semantic
pin (mirroring packages/cli figma skillContent.test.ts) asserting the three positive
concepts are present and the two retired contradictory phrases ('lossy by nature',
'content match the brief exactly') cannot silently return.
* style(guides): oxfmt the Send-to fidelity-contract test
Wrap the readFileSync call to oxfmt form (printWidth 100); unblocks required Format + its
preflight/preview-regression cascade on #2620.
* docs(guides): redirect Send-to imports to the Send-to guide
Claude Design's only doc-discovery tool is web search, which ranks this Template-First
(Download-ZIP) guide first; the Send-to guide is not indexed, so Send-to imports get
authored against the wrong flow. A body link here lets CD's fetch of this page unlock a
fetch of the correct guide (its URL now appears in a prior fetch result).
* docs(guides): add Send-to redirect note to the Claude Design landing page
The /guides/claude-design landing page (claude-design.mdx) is the indexed nav page and
points only at the Download-ZIP instruction file; a Send-to author landing here got no
pointer to the Send-to guide. Mirror the redirect from claude-design-hyperframes.md.
* docs(media): document automatic proxying for hostile codecs
Describes the shipped behavior: which input codecs render, that live preview
auto-proxies what the browser cannot decode, where the cache lives, and how to
turn it off. Carries the skills notes and the hardening design documents.
* docs(media): align proxy guidance with runtime
## What
Part 2 of the GSAP seek-safety rules (stacks on #2611): the two rules that touch existing catalog content and required reconciliation with an existing rule.
- `gsap_relative_value_second_writer` (error) — a relative var value (`y: "-=15"`) on a property whose target has another writer **active at the relative tween's start**. The relative base is captured at tween init, which reads a different partial state per seek path: sequential seek inits it mid-entrance, a cold render worker inits it at the entrance's end state, and the element teleports at chunk boundaries (production case: all scene nodes jumping ~20px mid-scene). Writers that complete strictly before the start are safe (children render in start-time order within a seek pass — verified against gsap 3.15.0) and are not flagged; neither are single-writer relatives, `from()`/`fromTo()`, build-time `gsap.set`, or relative position parameters (`"+=0.5"`). Selector resolution bails on combinators and cross-composition scoping rather than guessing. Findings aggregate per tween pair and report the overlap window.
- `gsap_timeline_set_initial_hide` (warning) — initial-state hiding via `tl.set(target, vars, 0)` on a paused timeline is not rendered while the playhead sits at exactly 0, so frame 0 shows the unhidden state (verified against gsap 3.15.0: opacity stays 1 after `tl.time(0)`, applies only past 0). Exempt when the target is already hidden by authored CSS/inline styles or a standalone `gsap.set()`, and only sets preceding every tween in source order qualify (mutated position variables resolve to their initial binding in the parser — outro hard-kills don't masquerade as position-0 sets).
- Reconciliation: `gsap_fullscreen_overlay_starts_visible`'s fixHint previously recommended exactly the flagged `tl.set(sel, {opacity:0}, 0)` pattern; it now recommends authored CSS hiding or immediate `gsap.set()`.
- Docs for the full rule family in `docs/packages/lint.mdx`.
## Corpus impact (the reason this is its own PR)
These two rules are the ones that fire on repo-shipped content:
- `gsap_relative_value_second_writer`: 4 errors in `gooey-metaball`, all genuine overlaps. Measured with gsap 3.15.0: ballD diverges **3.31 xPercent / 1.99 yPercent (~8px/5px at 240px ball size)** between sequential and cold seek — a permanent base offset that appears as a teleport at a chunk boundary. Real but modest; happy to fix the block in a follow-up (start the drift at the entrance's end, or use absolute `fromTo`).
- `gsap_timeline_set_initial_hide`: 10 warnings across the catalog after the CSS-hidden exemption (down from 54 pre-narrowing); spot-checked as genuine frame-0 pops with no authored hide (e.g. `vfx-text-cursor` `#phrase-b`).
Adversarially reviewed the same way as #2611 (393-composition corpus + gsap semantics experiments); FP classes fixed and locked as negative tests: precede-only second writers, descendant/cross-composition selector mis-joins, CSS-hidden re-assertions, mutated position variables.
## Tests
Full `packages/lint` suite green at 440 tests including multi-composition roots; `tsc`, oxlint, fallow audit clean.
* feat(studio-server): serve H.264 proxies from the preview route
Wires the codec manifest and the transcoder into the preview surface: the route
negotiates a proxy via a query param and serves it through the existing range
and ETag machinery, composition HTML carries a codec map for the runtime, and
hostile assets pre-warm so a first play does not wait on a cold transcode.
Exposes the three subpath exports the CLI surfaces consume upstack.
Drops the TEMP fallow entry added with the transcoder: it has real importers now.
* fix(studio-server): publish media proxy exports
* fix(parsers): scan HTML comments linearly
* feat(cli): let projects opt out of automatic proxying
Adds media.autoProxy to hyperframes.json plus --proxy/--no-proxy flags, and
forwards the resolved value into the studio and preview servers and the vite
adapter. Lands before the runtime slice that turns auto-proxying on, so the
switch exists before there is any behavior to switch off.
* fix(cli): align media config schema
ukimsanov