test(StorageRegistry): add docs and tests to improve state coverage

[varunsrin]

Motivation

Cleaning up comments and improving test coverage.

Change Summary

Cleaning up comments and improving test coverage.

Merge Checklist

• [x] The PR title adheres to the conventional commits standard
• [x] The PR has been tagged with change type label(s) (i.e. documentation, feature, bugfix, or chore)
• [x] The PR's changes adhere to all the requirements in the contribution guidelines
• [x] This PR does not require changes to the Farcaster protocol

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PR-Codex overview

Detailed summary

• Added a new function testFuzzOnlyOwnerCanSetDeprecationTime to test that only the owner can set the deprecation timestamp.
• Removed the duplicate function testFuzzSetDeprecationTime.
• Added a new function testFuzzSetDeprecationTimeRevertsInPast to test that setting the deprecation timestamp in the past reverts.
• Renamed the function testFuzzCannotSetMinAboveMax to testFuzzCannotSetMinEqualOrAboveMax.
• Renamed the function testFuzzCannotSetMaxBelowMin to testFuzzCannotSetMaxEqualOrBelowMin.
• Renamed the function testFuzzWithdrawal to testFuzzRentAndWithdraw.
• Added a new function testFuzzWithdrawalRevertsInsufficientFunds to test that withdrawing an insufficient amount reverts.
• Removed the function testFuzzWithdrawalRevertsCallFailed.
• Added a new function testFuzzOnlyTreasurerCanWithdraw to test that only the treasurer can withdraw funds.
• Added a new function testFuzzWithdraw to test the withdrawal of funds.
• Added error messages for various revert conditions.
• Added events for rent, change in maximum supply, change in deprecation timestamp, change in vault, and withdrawal.

The following files were skipped due to too many changes: src/StorageRegistry.sol

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[github-actions[bot]]

Coverage after merging varunsrin/storage-registry-review-2 into main will be

98.75%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
Bundler.sol	100%	100%	100%	100%
FnameResolver.sol	100%	100%	100%	100%
IdRegistry.sol	100%	100%	100%	100%
KeyRegistry.sol	100%	100%	100%	100%
StorageRegistry.sol	100%	100%	100%	100%
src/lib
Signatures.sol	100%	100%	100%	100%
TransferHelper.sol	0%	0%	0%	0%	12, 17, 20, 20, 20
TrustedCaller.sol	100%	100%	100%	100%

[varunsrin]

@horsefacts couple of things we could add in (but wanted to run by you):

1. Should we hardcode the _initialDeprecationPeriod in the constructor to 1 year? I'm pretty sure we'll want to deploy with that default for now, so we can eliminate a configuration param.
2. We can probably use unchecked in a couple of places to reduce a little gas, but is it worth it given your testing of L2 gas usage?

[horsefacts]

• Should we hardcode the _initialDeprecationPeriod in the constructor to 1 year? I'm pretty sure we'll want to deploy with that default for now, so we can eliminate a configuration param.

Yeah, I'll make this refactor when I get a sec.

• We can probably use unchecked in a couple of places to reduce a little gas, but is it worth it given your testing of L2 gas usage?

Nah, probably not worth it at this point, based on our L2 profiling.