ln-401-task-executor

> **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}`. # Implementation Task Executor **Type:** L3 Worker Executes a single implementation (or refactor) task from Todo to To Review using the task description and linked guides. ## Purpose & Scope - Handle one selected task only; never touch other tasks. - Follow task Technical Approach/plan/AC; apply KISS/YAGNI and guide patterns. - Update Linear/kanban for this task: Todo -> In Progress -> To Review. - Run typecheck/lint; update docs/tests/config per task instructions. - Not for test tasks (label "tests" goes to ln-404-test-executor). **Hex MCP acceleration (if available):** Use `inspect_path()` and `outline(path)` before reading large code files. Use `read_file()` in discovery mode for structure and targeted ranges; when you need `revision` and checksums for a follow-up edit, refresh that file with `read_file(edit_ready=true, verbosity="full")` before `edit_file()`. For edits to existing code, run `index_project(path=project_root)` once and use `analyze_edit_region(...)` before non-trivial edits. After edits: `edit_file(base_revision=rev)` -> `verify(checksums)`. Before handoff: `changes()` to review diff. ## Inputs | Input | Required | Source | Des...