Add event-based offchain indexer with Runtime API and RPC for pallet-robonomics-cps#488

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Copilot wants to merge 12 commits intorelease/4.1from

copilot/add-offchain-worker-indexer

Commits on Feb 2, 2026

Initial plan
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Add CPS offchain indexer with Runtime API and RPC extension

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akru
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Fix warnings and verify CPS pallet builds with and without offchain-worker feature

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akru
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Address code review feedback - improve error messages and add performance notes

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akru
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Add security considerations to documentation

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akru
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Address PR feedback: rename feature, add node_id, use OperationType enum, add serde, use system time

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akru
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Improve indexer: double-map storage (node_id first), optional from/to, return structures, add tests

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Refactor: node_id first param, return structs directly, use block number as timestamp

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akru
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Use sp_io::offchain_index for data indexing and add node index for efficient queries

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akru
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Implement efficient event-based offchain indexing with single write per block

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akru
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Update documentation to reflect event-based indexing architecture

Copilot
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akru
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Commits on Feb 9, 2026

[WIP] Fix compilation, extract runtime events for indexer
akru
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