ln-513-regression-checker

> **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}`. # Regression Checker **Type:** L3 Worker **Category:** 5XX Quality Runs the existing test suite to ensure no regressions after implementation changes. ## Inputs | Input | Required | Source | Description | |-------|----------|--------|-------------| | `storyId` | Yes | args, git branch, kanban, user | Story to process | **Resolution:** Story Resolution Chain. **Status filter:** To Review ## Purpose & Scope - Detect test framework (pytest/jest/vitest/go test/etc.) and test dirs. - Execute full suite; capture stdout/stderr for Story quality gate. - Return PASS/FAIL with counts/log excerpts; never modifies Linear or kanban. - Preserve full stdout/stderr output for downstream log analysis. ## When to Use - After code quality checks pass - Code quality check passed ## Workflow ### Phase 0: Resolve Inputs **MANDATORY READ:** Load `shared/references/input_resolution_pattern.md`, `shared/references/ci_tool_detection.md` 1. **Resolve storyId:** Run Story Resolution Chain per guide (status filter: [To Review]). ### Phase 1: Execute Tests **MANDATORY READ:** Load `shared/references/output_normalization.md` Read target project files if they exist: `d...