starknet_committer: define fetch_contract_storage_paths_concurrently

[ArielElp]

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[ArielElp]

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• starknet_committer: fetch patricia paths concurrently #14283
• starknet_committer: define fetch_contract_storage_paths_concurrently #14282 👈 (View in Graphite)
• starknet_committer: define StoragePathsReadTask #14281
• starknet_patricia_storage: move is_gatherable to ReadOnlyStorage #14280
• apollo_committer,starknet_committer: use blockifier's AccessedKeys #14252
• apollo_committer: add new request handler #14003
• apollo_committer: add request_paths_and_commit_block tests #14208
• starknet_committer: delete patricia paths on reverts #14002
• starknet_committer,apollo_committer: add timers for fetch patricia paths #14189
• 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
• apollo_committer_types: add patricia proofs request and response types #13996 : 1 other dependent PR (#13997 )
• 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
• 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
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PR Summary

Medium Risk
Adds merkle proof collection on the block commit path with skip logic for missing contract leaves; behavior must match existing proof expectations when wired in.

Overview
Adds fetch_contract_storage_paths in trie_traversal.rs to load Patricia preimage maps (PreimageMap) for per-contract storage tries, keyed by ContractAddress. The API mirrors create_storage_tries: when storage implements GatherableStorage, work runs via storage.gather and existing StoragePathsReadTask; otherwise it loops and calls fetch_patricia_paths sequentially.

Inputs are contract_storage_sorted_leaf_indices (NodeIndex → sorted leaf indices) and contract_leaves (contracts trie leaves for storage roots). Each index is mapped with try_node_index_into_contract_address; contracts missing from contract_leaves are skipped (documented for new contracts on the previous tree or deleted contracts on the new tree). The change is new plumbing only—no call sites appear in this diff.

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