The pipeline already carried FrameCheckOptions; only the flag was
boolean, which meant a pipeline caller tuning severity or seek points
would have them silently dropped — the two sides only agreed because
today's caller happens to match the defaults. Bare --frame-check keeps
the defaults; the value form mirrors --caption-zone's grammar, freezing
the contract before a release pins it.
Port validate's per-media-element clip audit into check's session
(clip_media_fit findings): an intrinsic duration meaningfully shorter
than the data-duration slot silently shortens the slot at render time,
and neither lint nor the runtime listeners can see it. A linter crash
now reports as check_lint_failure instead of masquerading as a runtime
failure. Finding-crop capture failures stay non-gating but emit a
stderr note and a telemetry error event so rollouts can measure the
second-session failure rate.
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.
Every duplicated decision gets one owner: rectToBbox lives in checkTypes
(was verbatim in pipeline and browser layers); the audit seek tuning is
one exported AUDIT_SEEK_OPTIONS consumed by check and the deprecated
inspect path; zoom padding/scale defaults export from the capture module
instead of re-literalized in three files; the optional run_id property
is built by one helper across all three telemetry events; check's
--max-transition-samples parsing reuses its own positiveInteger helper;
validate drops a leftover re-export and redundant explicit-default args
go away.
Tests: the contrast candidate round-trip gains a real integration
anchor (the actual browser script eval'd in-page, a wrapper asserting
finish receives the page-script bbox shape) replacing regex-over-source
as the primary guard; the redundant geometry source-golden and a
duplicated deprecation-envelope assertion are dropped.
snapshot --zoom <selector|x,y,w,h> + --zoom-scale (default 3) crops via
Puppeteer clip at raised deviceScaleFactor — density changes, layout
never does. Selector resolves per frame with 24px padding; no match is
a loud error, and a frame whose clamped region is a sliver (element
collapsed or animated off-canvas) is skipped with a stderr note rather
than written as a useless few-pixel image.
check --snapshots additionally writes finding-NN-<code>.png crops for
error findings with bboxes (cap 12, deterministic re-seek in a second
session) and draws labeled annotation boxes on overview frames via a
transient overlay injected only after audits complete. Skill reference
gains the zoom workflow: check reports a finding, zoom into it, fix,
re-check.
HYPERFRAMES_RUN_ID (trimmed, 128-char cap) attaches as run_id to the
generic cli_command / cli_command_result events, absent when unset, so
an orchestrator setting it per design element can group a verify loop's
invocations in analytics. check additionally emits one check_report
event per invocation (including lint-short-circuited and failing runs):
gate booleans, per-class error/warning counts, launch/seek/contrast
phase timings, sample counts, ok and exit code. Timings stay internal;
no command output changes.
Ports the EF bridge's captionZone and frameCheck semantics as opt-in
flags so the bespoke bridge can be retired: --caption-zone takes
fractional band geometry (x0;y0;x1;y1) with optional severity routing
and seek points, defaults matching the bridge (caption seek [1], frame
seek [0.5], 2px tolerance, 0.05 opacity floor, 4px minimum size, 0.95
full-frame exclusion, center-in-band comparison, tag|text dedup).
--frame-check adds media bounds detection (img/svg/video/canvas) the
always-on text canvas_overflow never covered, reusing overflowFor.
Breach floor: max(120px, 6% of min canvas dimension). Band math derives
from the composition's own canvas, portrait included. Both gates off by
default; plain check output unchanged.
Miguel Ángel