**The catalog generator destroys hand-written documentation on every run.** It
does `rmSync(dir, { recursive: true })` on both catalog folders before
regenerating, so any section a human added to a generated page is deleted the
next time anyone runs it. There is now a carry-forward pass that reads those
sections off the existing pages first and re-emits any heading the template does
not own. Note this prevents future loss only — the earlier regeneration in this
stack already removed what was there, and it is recoverable from git if wanted.
It was also clobbering `docs.json`: rebuilding the Catalog tab dropped its icon
and unlinked `catalog/index.mdx` from the sidebar entirely.
And 27 of 36 component pages told the reader to "see the comment header in the
file" when no such header exists. The generator reads the file now and only says
it when true.
On presentation: 1,365 table rows across 168 pages became 0. `## Details` was a
table whose rows were "Type: Block" and the duration; `## Files` was three
columns where most items have exactly one file. Both are one sentence now. The
preview leads the page instead of sitting under title, description, tags, a
warning and a credit — four of which Mintlify already renders from frontmatter.
**Two guides that showed nothing now show the thing.** Background removal plays a
real cutout with the matte magnified at the hair edge and at a shoulder a plant
overlapped, because those are where matting fails. HDR is the honest one: you
cannot show HDR brightness on an SDR page, so it shows the `ffprobe` verdict and
a measured round-trip — 4000 nits authored, 4012 back out — and says on screen
for all 26 seconds that it is not simulating anything.
Both films were checked before publishing: no black or frozen stretches, and read
at the real 590px docs column width rather than full size. Nav after regeneration:
307 pages, 0 dangling, 0 redirect collisions.
* docs(registry,skills): surface code-highlight 0-based indexing and opacity-reveal sweep guidance
From the 2026-07-14 CLI feedback digest (skills-owner action): a user
building code teaching videos hit two authoring gaps.
1. code-highlight's `line` is intentionally zero-based (`line: 1` =
second displayed line) but the warning lived only in pr-to-video's
code-vocabulary reference — nowhere an author actually touches the
value. Call it out at the block-use sites: the `__BLOCK` declaration
itself, the registry-item description, and the motion-graphics
catalog map.
2. Opacity-only code-typing tripped `sweep_static` for that user, who
worked around it with a slow host y-drift. The sweep fingerprint
does include per-element opacity, so document the actual trap (a
reveal that settles before the sampled window, then holds a static
frame) and the idiomatic fixes (spread the reveal / keep a blinking
caret alive) in the check reference — and pin the fingerprint's
opacity sensitivity with a regression test covering both the
visibility-floor crossing and a mid-fade value change.
* docs(catalog): regenerate code-highlight page from updated registry-item description
Only the code-highlight page is committed: a full generate-catalog-pages
run also surfaces ~34 blocks missing from the git-tracked catalog index
(pre-existing drift on main), which belongs in its own chore PR.
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.
ukimsanov