Post-review fixes on top of the quality-pass-2 branch.
1. delegation.go: replaced insertDelegationRow's (bool, bool) return
with a typed insertDelegationOutcome enum (insertOK /
insertHandledByIdempotent / insertTrackingUnavailable). Eliminates
the positional-boolean decoding the caller had to do. Internal, no
behavior change.
2. ConfirmDialog.tsx: added singleButton prop. When true, hides the
Cancel button for single-action info toasts (Esc still dismisses
via onCancel). TemplatePalette's import notice uses it.
3. ErrorBoundary.tsx: fixed the floating clipboard promise. Added
.catch(() => {}) so a rejected writeText (permission denied,
insecure context) doesn't surface as unhandled rejection.
4. a2a_proxy_test.go: added 5 direct unit tests for
normalizeA2APayload (invalid JSON, wraps-bare, preserves-existing-
id, preserves-existing-messageId, missing-method). Fills the unit-
test gap for the helper extracted in the last pass.
Verification:
- go test -race ./internal/handlers/... passes (incl. 5 new tests)
- go build ./... clean
- canvas npm run build clean
- canvas npm test -- --run -> 352/352
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
232766d0da