The whole-field carve-out for allowedSites/deniedSites was false:
src/background/index.js pushes an approved/denied hostname onto them
in place, and the Settings revoke button filters one out in place from
a different page — the exact membership-vs-leaf pattern that made a
whole-field wallets diff unsafe, on a security-relevant field. A stale
page's save could resurrect a just-revoked permission or wipe one just
granted elsewhere. Both are now merged by address key and then by
hostname (mergeSiteMap()), the same way wallets merge by identity.
networkEndpoints gets the same per-key treatment for its lesser,
non-security version of the same race. tokenHolderCache stays
whole-field, correctly this time: nothing in src/ ever writes an entry
into it.
mergeListByIdentity() also had no floor of its own: two wallets
sharing walletIdentity()'s empty-fallback identity collapsed into one
via a Map, and mergeWallet() discarded the losing side's
encryptedSecret outright when there was no shared baseline to diff
against. Not reachable from today's UI, but the merge should not rely
solely on call-site discipline elsewhere. A same-identity collision
within `ours`, or between an unmatched `theirs` and a colliding
`ours`, is now detected and both records are kept rather than one
silently dropped.
New tests in tests/stateMerge.test.js, confirmed failing against the
prior state.js (stashed the fix, reran full suite: 3 red, 832 green;
restored, all 835 green):
- a dApp approval survives a stale Settings page revoking an unrelated
site
- a revoked site permission stays revoked against a stale page's later
save
- two independently created wallets with a colliding identity both
survive, encryptedSecret included
make check: 835/835 tests, test-verify-build 39/39, check-censored
clean, lint stage ran fresh in the pinned container (not CACHED),
prettier clean. No containers left running.