Guillaume Ballet 40c29ad53a core/overlay: load transition state from system contract ... Replace the gob-encoded `rawdb.{Read,Write}VerkleTransitionState` plumbing with a direct read from the binary transition registry system contract at `params.BinaryTransitionRegistryAddress`. The registry exposes the transition state via fixed storage slots; a tiny `StorageReader` interface (`Storage(addr, slot) (Hash, error)`) captures what the loader needs. `LoadTransitionState` now takes a `StorageReader` instead of an `ethdb.KeyValueReader` and returns `nil` when the registry has not been initialised (slot 0 unset). `IsTransitionActive` is exposed for callers that only need the started flag. `core/state/reader.go:newUBTTrieReader` is updated: - It now takes the binary triedb, an optional MPT triedb, and a `wrapInTransitionTrie` flag so callers can opt out of the wrap. - It uses a small `binTrieStorageReader` adapter to query the registry directly from the binary trie at the requested root, avoiding the MPT key-hashing in `flatReader`. - When wrap=true and the registry's BaseRoot is non-zero, the MPT base is opened against the supplied MPT triedb. With the current callers (mptdb=nil) the wrap degenerates to a passthrough, preserving existing master semantics until the dual-triedb routing lands in the next commit. The dead `rawdb` accessors and `VerkleTransitionStatePrefix` schema constant are removed.		2026-04-29 16:21:59 +02:00
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state_transition.go	core/overlay: load transition state from system contract	2026-04-29 16:21:59 +02:00