T-2HDX-normalize-cwd-relative-baseline-paths

Status: planning/draft · Impact: medium · Complexity: small

Goal

/sdlc:task-work subtracts a pre-captured quality baseline from the gate output to isolate new drift, but that subtraction is a string match on finding lines. Some runners (notably knip / lint:deps) emit paths relative to the cwd, so the same finding renders differently from the main-repo cwd versus a worktree cwd and fails to match — leaking pre-existing findings into the new-drift report. This task closes that gap in the SDLC plugin’s task-work baseline diff so a baseline captured in one cwd subtracts cleanly under a gate run in another. Originating from T-D8TE-ratchet-biome-complexity-ceiling in https://github.com/sksizer/markdown-contract.

Originating post-mortem: knip (lint:deps) emits cwd-relative paths (../../../.git/hooks/… from a worktree vs .git/hooks/… from the main repo), so a baseline captured from the main-repo cwd cannot string-match findings from a worktree gate run. The baseline diff should normalize cwd-relative finding paths (or always capture and run from a canonical cwd) so main-repo baselines subtract cleanly under a worktree run.