Mark
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- Append driveA31 to tests/uat/lib/harness-page-driver.ts after driveA30:
- Reuses UserEvent type (Plan 03-02 import already present).
- 3-phase pattern: page.evaluate → findLatestZip → JSZip
logs/events.json parse + filter-pipeline grep for sentinel absence
+ control-sentinel presence.
- 3 host-side checks: A31.2 (eventsContainingSentinel.length === 0),
A31.3 (eventsTargetingPassword.length === 0), A31.4
(eventsContainingControl.length >= 1; defense-in-depth proves
the listener is alive so A31.2/A31.3 absences mean the filter
fired rather than a tautological "no events at all" pass).
- Standard guard checks A31.0 (zip present) + A31.0a (events.json
entry exists) + A31.0b (JSON.parse success) gate before A31.2..A31.4
per Plan 02-04 / Plan 03-01 / Plan 03-02 driveA26/A29/A30 precedent.
- Filter-pipeline form preserved (no `continue`) per CLAUDE.md
Control Flow §.
- Wire orchestrator in tests/uat/harness.test.ts:
- Add `driveA31,` to import block after `driveA30,`.
- Add `driveA31Wrapped` const after `driveA30Wrapped`.
- Add `{ name: 'A31', drive: driveA31Wrapped }` entry to drivers
array after the A30 entry with explanatory banner comment
citing the cs-injection-world precedent + the defense-in-depth
A31.4 control check.
- Append `, A31` to the orchestrator banner string.
Acceptance grep gates (post-commit):
- grep -c 'driveA31' tests/uat/lib/harness-page-driver.ts returns 2
- grep -c 'driveA31' tests/uat/harness.test.ts returns 6
- grep -c 'secret-do-not-log-123' tests/uat/lib/harness-page-driver.ts returns 1
- tsc --noEmit exit 0
A29 flake disclosure (per Plan 03-02 SUMMARY "Issues Encountered"):
- During Plan 03-03 empirical verification of A31, the pre-existing
A29 flakiness documented in 03-02-SUMMARY.md surfaced: A29 chains
off incidental zip-mtime ordering against prior assertions' zips,
so when A29's own (empty chrome-extension:// SAVE) zip mtime ties
with a prior real-content zip, findLatestZip non-deterministically
returns the prior zip with rrweb events from iana.org/example.com.
- 3 base runs (HEAD=de398347, no Plan 03-03 changes): 2/3 PASS,
1/3 FAIL — confirms PRE-EXISTING flake, NOT a Plan 03-03 regression.
- Per CLAUDE.md SCOPE BOUNDARY ("Only auto-fix issues DIRECTLY caused
by the current task's changes") + Plan 03-02 SUMMARY's explicit
recommendation ("Plan 03-05's VERIFICATION.md aggregator + a
Phase 4 hardening pass can pick it up"): A29 flake is OUT OF SCOPE
for Plan 03-03. Documented in SUMMARY as deferred item.
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