Three findings of the v1.70.0-beta.1 audit, all on the transition path
added by #82, all of the same shape — the new path did not inherit a
property the old one had.
B1: persisting the zoom moved into _settleCameraTransition only, and a
cancellation never settles. Touching the plan mid-flight — the literal
scenario of the issue — froze the shown frame and threw it away; before
which kind it is: the user one (_stagePointerDown) persists the frame
that stays on screen, the eleven structural ones keep writing nothing.
The distinction is now also written down in spec #82 §13, which had one
line for both.
B2: the anchor was read from the presented (lagging) frame while the
zoom accumulated from the target, so a six-notch trackpad series walked
the point under the cursor 17 px away — against §10's own promise. Both
now come from the same state. Spec §10 said to use the presented frame
and to keep the anchor within 0.5 px; those two are incompatible, and
the paragraph is corrected rather than left as a trap.
M2: the feather freeze keyed on the two gesture flags, which an
animated transition does not set, so every tween frame rebuilt the blur
region. It keys on 'the camera is still' now.
Guards: unit tests pin the anchor at 1e-9 across 8/16/33 ms series and
prove zoom accumulation is untouched; the smoke checks the shown zoom is
the stored one, that a structural cancellation stores nothing, and that
the anchor holds; three mutants (cancel-loses-zoom, anchor-from-
presented, feather-thaws) were run by hand and each reddens.
User-Visible: yes
Issue: #396
Capture the general-settings help surface at 390 CSS pixels and DPR 2 in
both themes, assert its viewport contract, and teach the golden runner to
select a renderer scale per scenario.
Issue: #86
User-Visible: no
Exercise the effective Chromium renderer contract for 200% browser zoom and
assert that the trigger and tooltip stay visible, the dialog does not gain
horizontal overflow, and opening help leaves stage geometry unchanged.
Issue: #86
User-Visible: no
Exercise the real lazy onboarding runtime, verify all five space help controls,
and prove that opening help neither mutates the draft nor eagerly loads the
editor runtime.
Issue: #86
User-Visible: no
Add the agreed Party 1 help controls to general, space, marker and device-catalog settings in all four locales, including cold onboarding parity and regression coverage.
Issue: #86
User-Visible: yes
Refresh Party 1 against the current four-locale UI and replace the retired Boundary affordance with zero-thickness wall semantics.
Issue: #86
User-Visible: no
repo-hygiene caught it: HACS globs *manifest.json over the whole clone
and rejects a repository with two. The dump is scripts/config-schema.json.
User-Visible: no
Issue: #33
A picked raster is now classified from its HEADER BYTES ONLY before anything
heavy happens: src/backdrop-probe.ts parses PNG IHDR (+colour type/tRNS for
alpha), JPEG SOF and WebP VP8/VP8L/VP8X at fixed offsets, never using a file
field as an allocation size; hostile or truncated headers collapse to
'unknown', which warns without numbers instead of passing silently. The
thresholds live in that module as the single calibration point
(WARN_DECODED_BYTES 128 MiB ≈ 32 MP, HARD_DIMENSION 16384 — the browser
canvas cap, DOWNSCALE_TARGET_PX 4096), derived from the desktop-Chromium
matrix now committed as demo/benchmark_backdrop_decode.mjs with a
conservative tablet margin documented in the spec.
The shared pick flow (src/backdrop-pick.ts) feeds BOTH lazy runtimes — the
editor space dialog and the onboarding first-space dialog — so the guard
cannot drift between them, and nothing of it enters the eager View graph.
Warn shows the real numbers and three actions; the reduced copy decodes
EXIF-aware, keeps aspect and alpha (PNG stays PNG, opaque becomes JPEG
q0.9) and flows through the ordinary planFile → upload path. Hard has two
phases with one outcome: beyond 16384 px only Cancel; a failed or timed-out
(10 s) reduce closes with a toast, clean staging and NO silent fallback to
the original the user just declined. SVG never reaches the probe. The safe
path swaps the manual byte-loop base64 for FileReader — half the JS-heap
peak on every upload, byte-identical output (parity asserted in the smoke).
Proofs: header-table units incl. a fuzz set of hostile headers and ±1
threshold bounds; smoke_backdrop_guard on the real bundle — zero decode
calls before the choice, byte parity of keep-original, a real 6200 px
reduce to 4096 for both alpha and opaque branches, cancel-only hard
dialog, both phase-2 failures (reject and hang under the test-only timeout
override), re-pick after refusal, SVG bypass; four registry mutants
(probe-always-safe, alpha-dropped, hard-demoted, phase-2 silent fallback).
Spec anchor corrected alongside: the server plan limit is 8 MB
(MAX_PLAN_BYTES), attachments are the 50 MB path — an 8 MB JPEG is easily
80-160 MP decoded, so the client-side guard stays the primary defence.
Issue: #39
User-Visible: yes
Codex