refactor: introduce Ecosystem interface for multi-PM support#65
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Extract PM-specific behavior (resolve, audit build/parse, artifact dirs, lock files) into an Ecosystem interface with per-PM implementations (npm, yarn, pnpm, bun). Detector and resolver now delegate to the ecosystem registry instead of hardcoded switch statements. This is a pure refactoring — no new features, all existing tests pass. Prepares the codebase for adding non-JS ecosystems (Cargo, Go, etc.). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
internal/ecosystempackage with anEcosysteminterface that abstracts PM-specific behavior: command resolution, audit build/parse, lock files, manifest files, and artifact directoriesdetector,resolver, andauditpackages to delegate to the ecosystem registry instead of hardcoded switch statementsThis lays the groundwork for adding non-JS ecosystems (Cargo, Go, Maven, etc.) in a follow-up PR.
Test plan
go test ./...)spm install,spm add,spm run,spm clean,spm auditin an npm/yarn/pnpm project🤖 Generated with Claude Code