starknet_committer: compute and store accessed keys digest

[ArielElp]

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[ArielElp]

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• apollo_committer: add new request handler #14003
• starknet_committer: delete patricia paths on reverts #14002
• starknet_committer: underlying logic of the new read witnesses and commit endpoint #14001
• starknet_committer: extract metadata construction to a function #14000
• starknet_committer: extract commit plan to commit_or_load #13999
• starknet_committer: read and write patricia paths to index db #13998
• starknet_committer: db keys for proofs and accessed keys digest #13997
• apollo_committer_types: add patricia proofs request and response types #13996
• starknet_committer: add patricia paths forest reader/writer traits #13995
• starknet_committer: define StarknetForestProofs serde #13994
• starknet_committer: compute and store accessed keys digest #13993 👈 (View in Graphite)
• starknet_committer: add utility that returns sorted leaf indices #13992
• starknet_committer: abstract fetch_all_patricia_paths #13991
• starknet_patricia_storage: two layer storage #13990
• starknet_committer: move fetch_patricia_paths tests #13960
• starknet_committer: fetch patricia paths tests #13959
• starknet_committer: support both layouts in fetch_patricia_paths #13958
• main

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PR Summary

Medium Risk
Adds new deterministic hashing logic (sorting + bincode wire format) to fingerprint accessed read keys, which could affect any downstream replay/verification if the canonicalization format changes. Impact is limited by being gated behind the os_input feature flag.

Overview
Adds a new os_input feature (and optional bincode/blake2/digest deps) to enable computing a deterministic fingerprint of accessed read keys.

Introduces accessed_keys_digest in serde_db_utils.rs, which canonicalizes accessed class hashes, contract addresses, and per-contract storage keys via sorting, serializes the canonical structure with bincode, and hashes it with BLAKE2s-256 to produce a [u8; 32] digest.

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