ReceiverTemplate update

[khadni]

This pull request refactors the consumer contract example and guide to use ReceiverTemplate instead of IReceiverTemplate, and introduces several improvements to code clarity, security, and maintainability. The changes include renaming the abstract contract, updating all references, switching permission fields to private, adding getter functions and events, and enhancing documentation for metadata encoding. These updates make the contract interface more robust and easier to use for developers.

Contract and API Refactoring

• Renamed the abstract contract from IReceiverTemplate to ReceiverTemplate, updated all inheritance and import statements, and replaced all references in documentation and code examples. [1] [2] [3] [4] [5] [6]
• Changed permission fields (forwarderAddress, expectedAuthor, expectedWorkflowName, expectedWorkflowId) from public to private, and provided public getter functions for each.
• Added events for permission updates, such as ForwarderAddressUpdated, ExpectedAuthorUpdated, ExpectedWorkflowNameUpdated, and ExpectedWorkflowIdUpdated, and emitted these events in the corresponding setter functions. [1] [2] [3]

Security and Maintainability Improvements

• Updated setter functions for permission fields to emit events and use previous values for better auditability. [1] [2] [3]
• Improved the metadata decoding documentation and implementation to clarify the encoding structure and match the CRE engine's encoding algorithm. [1] [2] [3]

Example and Guide Updates

• Refactored example contracts (CalculatorConsumer, MyConsumer, AdvancedConsumer) to inherit from ReceiverTemplate, use new field names, and update logic to match new API. [1] [2] [3] [4] [5]
• Updated guide sections and navigation to reflect the new contract name and improved documentation for workflow name encoding and metadata structure. [1] [2] [3]

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Project	Deployment	Preview	Updated (UTC)
documentation	Ready	Preview	Dec 9, 2025 6:08pm