feat: batch split calls via Caller contract

[jtourkos]

Resolves: #18

[railway-app]

🚅 Environment sprinkler-pr-19 in Drips App has no services deployed.

[Copilot]

Pull request overview

This PR implements batched split call execution via a Caller contract to parallelize blockchain operations and improve processing efficiency. The implementation introduces pre-validation of accounts, batched transaction execution, and fallback retry logic for failed batches.

Key changes include:

• New batching system that pre-validates accounts and executes operations in configurable batch sizes (15 accounts per batch)
• Parallel validation with concurrency control (5 concurrent RPC reads) to optimize network calls
• Hybrid error handling with individual retry fallback when batch transactions fail

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
src/types.ts	Adds Caller contract address to Network type and introduces assertOxString validation function for address format checking
src/getNetwork.ts	Configures Caller contract addresses for all supported networks (mainnet, sepolia, filecoin, metis, optimism, and local testnet)
src/contracts/caller-client.ts	Implements client for interacting with the Caller contract's callBatched function to execute multiple calls in a single transaction
src/contracts/caller-abi.ts	Defines the ABI for the Caller contract's callBatched function
src/batchBuilder.ts	Provides utilities to build receive and split call data, plus a chunk utility for splitting arrays into batches
src/index.ts	Refactors processing logic to use batched execution: adds pre-validation, batch execution, retry logic, and integrates with existing drip list, project, and ORCID account processing flows
.gitignore	Adds .claude/ directory to ignore list

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