implement-planlisted

# Implement Plan Execute a plan artifact end-to-end on the current working tree. This skill reads the plan artifact READ-ONLY, reads the plan index, walks its task files in plan order, implements each task, self-reviews after each task, auto-commits per plan task, records a factual progress block per plan task in a run progress file, and updates the thread's singleton **implementation report** on the way out. It does not pause for clarifying questions at each step and does not ask before committing; the execution posture is identical whether or not a person is present. It does not rewrite history. ## Inputs This skill accepts a plan artifact. The plan is a **multi-file** artifact rooted in the active thread folder: ```text docs/threads/<YYMMDDHHMMSSZ-slug>/ ├── plan.md # the index, at the thread root └── plan-tasks/ ├── 01-<kebab-slug>.md ├── 02-<kebab-slug>.md └── … ``` The index plus its `plan-tasks/` folder together are the plan artifact. `plan.md` is the **index**: it carries the plan-level objective and context, a `Source:` line naming the upstream artifact the plan was compiled from (a thread-relative pointer, a repo-relative path, an issue URL, or `none — raw prompt`), a Global Constraints block, and an **ordered task list** that is authoritative for task count and order. Each `plan-tasks/NN-<kebab-slug>.md` file is one task, carrying the six mandatory fields — Objective; Input / context; Steps / substeps; Files modified; Verification;