derivation rules for block recovery

[mskrzypkows]

No description provided.

[Copilot]

Pull request overview

Adds timestamp-derivation rule validation to the Shasta node’s block recovery flow, aiming to detect invalid recovered L2 blocks earlier and trigger reanchor when needed.

Changes:

• Add per-block timestamp validation during recovery (VerifierThread::handle_unprocessed_blocks).
• Introduce ProposalManager::validate_block_timestamp implementing derivation-rule bounds checks.
• Bump workspace version from 1.34.6 to 1.34.7 (Cargo.toml / Cargo.lock).

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 5 comments.

File	Description
shasta/src/node/verifier.rs	Adds timestamp validation calls into the recovery loop and improves offset error reporting.
shasta/src/node/proposal_manager/mod.rs	Introduces validate_block_timestamp to enforce derivation timestamp bounds during recovery.
Cargo.toml	Workspace version bump to 1.34.7.
Cargo.lock	Lockfile updates reflecting the 1.34.7 version bump across crates.

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[Copilot]

Pull request overview

Adds derivation-rule enforcement during L2 block recovery by validating recovered blocks’ timestamps against protocol bounds, while also optimizing recovery by threading parent timestamps through the recovery loop.

Changes:

• Update verifier recovery loop to track and pass parent_timestamp between recovered blocks.
• Extend ProposalManager::recover_from_l2_block to validate recovered block timestamps and return the recovered block timestamp for chaining.
• Bump workspace/crate versions from 1.34.6 to 1.34.7.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 3 comments.

File	Description
shasta/src/node/verifier.rs	Threads parent_timestamp through recovery and adjusts offset validation error handling/logging.
shasta/src/node/proposal_manager/mod.rs	Adds timestamp-derivation validation during recovery and changes recovery API to return timestamps.
Cargo.toml	Workspace version bump to 1.34.7.
Cargo.lock	Lockfile updates reflecting version bump.

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