ln-831-oss-replacer

> **Paths:** File paths (`shared/`, `references/`, `../ln-*`) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. If `shared/` is missing, fetch files via WebFetch from `https://raw.githubusercontent.com/levnikolaevich/claude-code-skills/master/skills/{path}`. # ln-831-oss-replacer **Type:** L3 Worker **Category:** 8XX Optimization Executes OSS replacement plans from `ln-645-open-source-replacer`. For each custom module with a viable OSS alternative: install package, rewrite imports, run verification, then keep or discard atomically. --- ## Overview | Aspect | Details | |--------|---------| | **Input** | Migration plan from audit output or a target module | | **Output** | Replaced modules plus a machine-readable modernization summary | | **Companion** | `ln-645-open-source-replacer` identifies candidates, `ln-831` executes them | --- ## Workflow **Phases:** Pre-flight -> Load Plan -> Prioritize -> Replace Loop -> Report --- ## Phase 0: Pre-flight Checks | Check | Required | Action if Missing | |-------|----------|-------------------| | Migration plan or target module | Yes | Block replacement | | Test infrastructure | Yes | Block replacement | | Package manager available | Yes | Block replacement | | Workspace baseline safe | Yes | In managed runs coordinator already prepared it; in standalone runs protect rollback locally | **MANDATORY READ:** Load `shared/references/ci_tool_detection.md` for t...