the dump could hold two screens at once, and the runner refuses to act
on such a tree, so a quarter of android steps applied no action and the
count varied per run: the same seed never walked the same trajectory.
the ios companion and the chrome driver already do this.
web 3 and ios 7 convict 3 runs out of 3 with an exactly 2x witness.
android convicts 2 in 5 because the same seed does not walk the same
trajectory there, so it proves the app runs instead.
the equal-length digit rule exists because web merges the card and an
account named -1 makes '12' ambiguous. a dedicated count node has
nothing to disambiguate, so applying it there threw away real evidence.
android dumps a cross-fade with both screens in the tree. the route said
add-transaction while an unscoped find said home, so the oracle took a
half-rendered total as fresh and convicted on a tap that committed
nothing. one function now decides the route and returns null when the
frame is ambiguous.
summing cards went null when one was clipped, and the null poisoned the
carrier for the rest of the run. the balance window also spanned every
transaction since the last home visit, so the property convicted on
deltas it could not attribute: the old web witness was 3.16x the typed
amount, not 2x.
past 2^53 cents the gap between representable values is 128, so a real
1600-cent move reads back as something else and the equality is false
for a healthy submit as readily as a double one. also match parseCents:
a sign or an oversized amount is rejected, not read as an amount.
AXValue was the only source for text, but a StaticText carries its
string in AXLabel, so nothing on screen had .text on ios: a spec reading
it saw everything on android and nothing here.
compose for web merges the whole accountcard subtree, so the balance
child never exists there and every card parsed as 0. the property then
compared 0 to 0 and fired on any submit, which is a false positive
generator. unknown is now null and null is vacuously true.
the tree stays byte-identical and quiet across a cross-fade, so both the
quiet timer and the unchanged-tree escape called it settled mid-flight
and extractors read two screens at once.
an action's target was coordinates only, so a property matching on which
element was acted upon could never fire. ax.findAll([a,b]) also returned
nothing on web.
a launch the simulator rejects sent the xctest session into a recovery
chain that answered minutes late or never, and the rpc had no deadline,
so the run hung with no trace and no error. also take a per-udid flock:
a second run's reinstall lands under the first's live automation session
and wedges it.
* fix(replay-ui): drop @font-face rules for fonts that were never shipped
* fix(replay-ui): drop unresolvable JetBrains Mono from --font-mono stack
* chore(replay-ui): remove vestigial empty public/fonts dir
* feat(cli): add --max-steps for step-bounded runs
runner.Options.MaxSteps already worked but was unreachable from the command
line. A step budget is what makes two generators comparable: one making a
model call per step and one drawing from a PRNG are not comparable per second.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* feat(trace): record arm membership and host in meta.json
meta.json recorded the seed but not which picker ran, how it was configured,
what budget it was given, or which machine produced it. A directory of runs
cannot be attributed to an experiment cell without those, which makes any
factorial computed from such a directory unanalysable after the fact.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* feat(cli): add --arm and populate run meta from it
Model and instructions are recorded only when the LLM picker is the one that
will actually run, so a spec declaring generator = llm() that is run under the
seeded picker does not label its trace with a model it never called.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* feat(campaign): sweep seeds for one experiment cell
campaign.json lists the seeds a sweep intended to run and is written before
the first run, so a host that dropped runs shows up as missing seeds rather
than as a smaller sample. Seed 0 is rejected: sanderling test reads it as
"derive a seed from the clock", which is why conformance/gates.sh controls
nothing today.
Each run contributes one runs.jsonl line carrying steps to first violation by
origin step, the step that armed the failed obligation, so the survival
analysis never reopens a trace.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(runner): no silent generator fallback, and llm on web
--generator llm against a spec declaring no generator = llm(...) logged a
warning and ran the seeded picker. For a comparison campaign that is silent
arm corruption: the run completes, the directory looks correct, and the wrong
policy drove it. It is now fatal.
pickSources also returned the V8 source for both action and extractor on web
before it looked at the generator, so the llm policy was unreachable there.
The two axes are now independent: the driver picks the extractor source, the
flag picks the action source, and llmSource composes with either because the
runner populates the candidate list and screenshot on every platform.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(chrome): make the hierarchy dump agree with the web runtime
Three facts differed between the dump the goja host reads and the DOM the V8
host reads, so the two enumerated different candidates on one page.
scrollable was never emitted, and worker.go reads exactly that attribute while
targets.ts requires it for scrolls, so the goja host could not offer a single
web scroll. clickable tested el.onclick, which React assigns to its root
container for event delegation, making the whole viewport a tap target here and
in no other enumeration. Both now resolve through the selector sets in
pkg/spec/src/web-runtime.ts.
The dump also rooted at body while collectTargets walks querySelectorAll("*"),
so the goja host never saw html, where page-level scrolling lives. It now roots
at documentElement and skips the head subtree, which is all zero-bounds and
would otherwise carry script and title text into the trace.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(conformance): give the gate reproducible seeds
SEED defaulted to 0 and sanderling test reads --seed 0 as "derive a seed from
the clock", so the tunable controlled nothing and a gate failure could not be
re-run. SEEDS now takes one explicit non-zero seed per run, recorded in the
results table so a failing row names its stream.
The five runs stay on five different streams: a gate that scored one path five
times would catch less than one that scores five.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(chrome): emit editable as a plain boolean
editable was emitted as `isEditable || null`, and an absent field sends
internal/hierarchy into the native fallback, which reads any class name
containing "EditText" as an Android text widget. On web that is just a CSS
class, so a page styling a div with it was editable to the goja host and not to
the web runtime, and the model policy could be offered typing into a div.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(spec): leave the head subtree out of the web target walk
collectTargets walked querySelectorAll("*") while the hierarchy dump skips head,
so the two hosts enumerated different element sets on every page with a <head>.
No candidate changes: builtinCandidates pushes only for targets acceptsTarget
admits, and head elements have no positive bounds, so the list the draw ranges
over is untouched. What changes is that targetIndex now means the same thing on
both hosts.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* test(chrome): compare the facts both hosts derive from one DOM
The existing parity harness hand-authors the facts on both sides, so it proves
that given identical facts both hosts select identical candidates, and says
nothing about the two code paths that derive those facts from a real page. Four
divergences lived in that blind spot and it passed throughout.
This drives one real page and compares clickable, enabled, editable, scrollable
and positiveBounds element by element, plus the element sets themselves, which
is what catches a host that omits html or includes head. Reverting any of the
four fixes makes it fail naming the element and the fact.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* chore(make): run the browser packages one at a time
Both launch Chrome and launching two at once has failed with "Launch: context
canceled".
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* style: remove every em-dash and en-dash
Eighteen occurrences across fourteen files. Each sentence was repunctuated to
suit what the dash was doing rather than swapped for a hyphen, which produces
comma splices. The minus sign in folio-web's ledger is a minus sign and stays.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(chrome): honor the caller context in Launch
Launch and clearState ran against d.tabCtx, so a target that accepts the
connection and never answers wedged the process past its own --duration and
through SIGTERM, needing SIGKILL. Unattended that is a campaign worker lost for
the rest of the sweep with no diagnostic.
The browser is still allocated against d.tabCtx first, because chromedp starts
Chrome under whichever context calls Run first and allocating under a caller
deadline would kill the browser when Launch returns. Everything after
allocation goes through runCtx.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* fix(sidecarassets): publish the extracted jar through a rename
Extract wrote a 96 MB jar with a plain WriteFile into a temp path every
sanderling process on the host shares. On a cold host several concurrent
workers all miss the checksum and all write the same path, and O_TRUNC lets one
spawn a JVM against another's half-written archive. A fresh experiment host is
exactly a cold host.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* feat(campaign): kill a run that outlives --run-timeout
A wedged run holds its worker for the rest of the sweep, and on an unattended
host nothing else will send it a signal. Defaults to three times --duration and
must exceed it. A killed run is recorded as timed_out rather than as a generic
failure, so the analysis can tell a lost cell from a real crash.
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
* style(test): gofmt browser_test.go
Claude-Session: https://claude.ai/code/session_01A5KmftdEJ49A9z5mF5ESrX
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