improve CelerWallet

[hhl42]

No description provided.

[Copilot]

Pull request overview

This PR refactors and hardens the CelerWallet contract API and internals, updating the surrounding ledger libraries, tests, invariants, and documentation to match the new naming and operator-voting semantics.

Changes:

• Renamed CelerWallet/ICelerWallet functions, getters, and events (e.g., getBalance → balanceOf, transferToWallet → transferBetweenWallets, proposeNewOperator → voteForOperator).
• Added an owner-count cap (MAX_OWNERS) enforced at wallet creation, plus a new TooManyOwners custom error to bound loop costs in owner/vote-related logic.
• Updated tests (including invariants) and gas snapshot logs to reflect the refactor and measured gas changes.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/invariants/handlers/ChannelHandler.sol	Updates invariant helper to use balanceOf getter.
test/invariants/ChannelInvariants.t.sol	Updates invariant checks to use balanceOf.
test/gas_logs/fine_granularity/DepositEthInBatch.txt	Updates measured gas numbers.
test/gas_logs/CelerLedger-Migrate.txt	Updates measured migration gas numbers.
test/gas_logs/CelerLedger-ETH.txt	Updates measured deploy/call gas numbers.
test/gas_logs/CelerLedger-ERC20.txt	Updates measured ERC20 gas numbers.
test/CelerWallet.t.sol	Renames events/APIs in tests and adds coverage for MAX_OWNERS and vote/clearing behavior.
test/CelerLedger.Migrate.t.sol	Updates operator getter call to walletOperator.
src/lib/ledgerlib/LedgerOperation.sol	Updates wallet transfer call to transferBetweenWallets.
src/lib/ledgerlib/LedgerMigrate.sol	Updates operator getter call to walletOperator.
src/lib/AgentPayErrors.sol	Adds TooManyOwners custom error.
src/interfaces/ICelerWallet.sol	Renames API surface and updates NatSpec/events accordingly.
src/CelerWallet.sol	Implements new API names, adds MAX_OWNERS cap, and refactors operator voting state.
docs/contracts.md	Updates wallet API/event names in docs (but has stale source line anchors).
docs/architecture-summary.md	Updates migration/operator-vote terminology reference.

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