Two follow-ups to #361's sticky telemetry switch.
GET /api/settings reconciled an absent showPlanUsageLimits by persisting
true, but readJsonConfig() answers {} for ANY read failure (a parse
error, EACCES, EMFILE, a read landing inside PUT's non-atomic write), not
only ENOENT, and every page load calls this route, so one unlucky read
replaced the whole settings file with a one-key file. The route is a
plain read again and the default moved into the reader:
readPlanUsageTelemetryEnabled() treats an absent key as ON, the same way
readWorkspaceHooksEnabled() does, which is what the desktop chip already
shows for an install that never touched the setting.
saveAppSettings() sent showPlanUsageLimits on every save. The chip
defaults OFF on handhelds, so a phone saving its font size persisted
false and switched collection off for every desktop, whose chip then
went stale with no error anywhere. The key is now stripped like the
other per-device display keys and re-added only when the save FLIPS the
chip relative to what the device had (planUsageCollectionFlip), so an
explicit toggle on any device still writes it in either direction.
Tests pin both: the GET route with a mocked filesystem (absent, missing,
EACCES, garbage, explicit), the reader default, and the flip helper plus
its wiring in saveAppSettings.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
planUsageChipEnabled() (settings-ui.js) shows the header chip and the App
Settings checkbox as already ON whenever showPlanUsageLimits has never been
set — a discoverability default from 1.9.3. readPlanUsageTelemetryEnabled()
(hooks-config.ts) deliberately treats an absent key as "no telemetry" — a
privacy default, pinned by its own unit tests (never POST usage data
without an explicit persisted yes). Nothing reconciled those two
independent guesses, so a fresh install showed a checked box that silently
collected nothing until the user opened Settings and hit Save at least
once.
Verified live: an install that had never touched this setting had no
showPlanUsageLimits key in settings.json at all, and its running Claude
process's argv carried no --settings flag — zero telemetry ever collected
despite the chip rendering as enabled.
GET /api/settings now persists the resolved default (true) the first time
the key is truly absent — not explicit false — so "chip visible" and
"telemetry collected" become the same fact. readPlanUsageTelemetryEnabled's
own absent-means-false contract is untouched; after this runs once the key
is never absent again, so that branch stays correct in isolation while
being unreachable in practice for any install that has ever called this
route. An explicit false set afterward is respected forever.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>