* diagnose(1874): instrument synthesized commit wait and add stall loop workflow
* diagnose(1874): fix empty-array expansion under set -u; raise default iterations
* diagnose(1874): add arm64 matrix leg to isolate the Rosetta factor
* ci: build the iOS runner for the native arm64 slice
A generic simulator destination leaves the active arch undefined; Xcode 26.6
defaults it to x86_64, running the whole runner under Rosetta on arm64 hosts.
Pin ARCHS=arm64 across every lane that builds the iOS runner and bump the
derived-data cache suffixes. Measured ~30% faster commits on identical CI
hardware; delivery-throttle episodes still occur but start from a lower base.
* diagnose(1874): keep commit-wait cadence evidence value-free
The per-poll trace logged the observed field's contents (prefix(40)) on the
shipped type path; that value is user content and runner.log persists. Log
lengths and the expected-prefix walk instead, allowlist every
string-interpolating NSLog format in the module behind a source-scan guard,
and pin commonPrefixLength in the host-lane policy tests.
* diagnose(1874): narrow the log-format match for typecheck
* diagnose(1874): route cadence evidence through a typed value-free boundary
logCommitCadence accepts Int lengths and a timestamp only, so observed field
contents are unrepresentable at the poll call site; its emitted line is pinned
by a sentinel-secret test in the host-lane policy tests. The source guard
becomes structural — boundary present, poll path logs through it, no raw NSLog
in the observe closure — instead of parsing Swift format strings. #1874 is
reopened as the removal-tracking thread for this temporary instrumentation.
* refactor(apple): drop dead runner code and collapse duplicated helpers
Removes declarations with no consumers (findScopeElement, interactiveTypes,
two unused PresentedNode convenience inits) and collapses copy-pasted logic:
DataPayload now relies on the synthesized memberwise init, TvRemoteButton is
String-raw-valued, point-hit sorting shares smallestElementFirst, command-id
trim-or-nil lives once on RunnerCommandJournal, scroll/desktopScroll share
direction and durationMs validators, and the seven inline NSError refusals use
unsupportedOperationError. elementTypeName reads a table pinned by the
visibility-fold parity test.
The packager now skips files whose unit-test blocks were their whole body, so
10 test-only files stop shipping (and stop compiling on user machines) as
empty translation units.
Packaged Swift: 432.3 kB -> 427.8 kB; 56 files instead of 66. Net -144 lines.
* test(apple): pin skeleton-file exclusion in the packaging guard
The strip fixture always kept runtime content, so reverting the
skeleton-skip branch left every guard green. The new fixture's whole body is
unit-test blocks; the packaged path must be absent while a non-skeleton
sibling still ships. Observed red with the skip branch disabled before
re-enabling it.
* refactor(apple): tighten runner cleanup boundaries
Michał Pierzchała