upstage-cli

fix(ci): green the pipeline — lint errors + test scope

feat: IDE bridge — NDJSON-over-stdio protocol for editor extensions

feat: run_subagent isolate option — run subagents in a git worktree (Tier 2)

test(tui): render-test components with ink-testing-library

docs: changelog for hooks, /rewind, plugins, @file, TUI, worktree, /spec