code-clean

# Code Clean Two passes over termio's Swift: **dead code** (symbols nothing reaches) and **over-long comments** (prose that outgrew what it explains). Both end in a build. Neither is a refactor. This is not a generic AI-slop sweep. Run one on this repo and it finds nothing: a 2026-08 survey of all 69k tracked Swift lines turned up **1 TODO** (a false match on an `mktemp` template), **0 commented-out code blocks**, and **1 deliberate debug print**. Don't spend the pass hunting those. The bloat here is shaped differently, and §2 is where it lives. ## Scope Default to the current branch's diff against `origin/main`. A whole-tree pass is a standing request only — say so, and expect it to take real time. Never touch: - `Sources/termio/Editor/Highlightr/` — vendored; upstream API surface is kept intact on purpose (AGENTS.md). - Anything under `skills/` recorded in `skills-lock.json` — re-pull from upstream instead of hand-editing. - `ios/build/`, `ios/build-sim/` — Xcode artifacts, not tracked source. They hold ~100k lines of SPM checkouts that will swamp any tree-wide grep. Scope greps with `git ls-files`, never bare `find ios`. ## 1. Dead code `periphery scan --targets termio` (SPM; no config file needed). It is installed at `/opt/homebrew/bin/periphery`. **Roughly three of every four hits are false.** Four shapes account for nearly all of them — clear each before deleting anything: 1. **Retain-holders.** `private var toolbarDelegate / menuBar / hookListener / ...