feat: history storage engine with Actions Cache backend#21
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Add run history tracking via GitHub Actions Cache so future runs can compare against previous results without external services. Includes HistoryStorage interface, ActionsCacheStorage implementation, HistoryManager with size guards, and integration into the main entry point.
v6 only exports ESM which ncc cannot bundle. v4 has a CJS main entry and the same restoreCache/saveCache API surface.
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Summary
@actions/cachev4) so future runs can compare against previous results without external servicesHistoryStorageinterface withActionsCacheStoragebackend,HistoryManagerwith count pruning and 4MB size guard, and integration into the main entry pointhistory(default: true) andhistory-limit(default: 20)GITHUB_RUN_ID),erroredcount preservation,Buffer.byteLengthfor accurate size checks, first-run detection that distinguishes cache errors from genuine first runsStory
Story 7-1: History Storage Engine with Actions Cache Backend
Test plan
pnpm buildsucceeds (dist rebuilt)