pi-muselinn-harness

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pi-muselinn-harness

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Kimi Code-style agent orchestration harness for the Pi coding agent — Swarm, Goal, Plan, Permission, Task, Hooks, Skills, TUI

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# pi-muselinn-harness

[![test](https://github.com/MuseLinn/pi-muselinn-harness/actions/workflows/test.yml/badge.svg)](https://github.com/MuseLinn/pi-muselinn-harness/actions/workflows/test.yml)

**Kimi Code-style agent orchestration for the [Pi coding agent](https://pi.dev)** — Swarm · Goal · Plan · Permission · Ask · Task · Cron · Todo · Hooks · Skills · TUI, one package that builds the features Pi deliberately skips (sub-agents, plan mode, todo, …) and aligns them with Kimi Code's subsystem behavior.

Compatible with pi 0.81.x–0.83.x on macOS, Ubuntu, and Windows · Node 24/26 · CI-tested on macOS + Ubuntu + Windows.

![Closed-box editor with streaming state in the top border](https://muselinn.github.io/pi-muselinn-harness/assets/img/pi-boxed-editor.png)

## What is this?

Pi is a focused coding agent: no sub-agents, no plan mode, no todo. This
harness adds them — in the same style as [Kimi Code](https://www.kimi.com/code) —
as a single install:

| You want | You get |
|---|---|
| Parallel sub-agents | `agent_swarm` / `agent` — real `max_concurrency`, live braille-grid TUI, `run_in_background`, `/resume` |
| Plan before execution | `enter_plan_mode` — read-only exploration, approval gate, Kimi Code permission model |
| Stay on task | `/goal` — lifecycle, budgets, queue, completion-criterion gate |
| Freeze & steer | `/pause` full-screen freeze · subagent transcripts · `/steer` runtime injection |
| Safety rails | 18-level permission chain (`auto` / `yolo` / `manual`), destructive-command + `.env` guards |
| Work that outlives the turn | `run_background` + `cron_create` — persistent tasks and scheduled prompts |
| The agent asks properly | `ask_user_question` — tabbed multi-question dialog with previews |
| Task tracking | `/todo` + `todo_list` — phased plan with inline panel and reminders |
| A nicer editor | `╭─╮ │ ╰─╯` closed-box TUI with spinner + model in the border |
| Lifecycle automation | `[[hooks]]` engine — 16 events, blockable PreToolUse/Stop/UserPromptSubmit |

## Quick start

```bash
pi install npm:pi-muselinn-harness     # or: pi install git:github.com/MuseLinn/pi-muselinn-harness
pi                                      # restart, then:
```

Try it out:

```
/swarm on                                # enable swarm mode
/goal Refactor the auth module           # set a goal with budget tracking
/todo init "Phase 1: scanner"            # start a phased task plan
/plan                                    # enter plan mode (read-only exploration)
/pause                                   # freeze everything; esc/enter/space/ctrl+c resumes
/tui style plain|boxed|compact           # switch editor chrome anytime
```

Everything works out of the box — **no companion extensions required**. All
tools are model-callable, all commands are slash commands with Tab completion.

> **Upgrading from ≤ 0.7.4?** Remove the old companion extensions — they
> conflict with the built-in tools (pi refuses to start on duplicate tool
> names):
> ```bash
> pi remove npm:@juicesharp/rpiv-ask-user-question
> pi remove npm:rpiv-todo
> ```

## Features

### Swarm
- **In-process subagents** — `createAgentSession()` execution, `coder` / `explore` / `plan` types
- **Real concurrency control** — `runProgressive()` worker pool with true `max_concurrency` cap + exponential backoff retries
- **30-minute timeout** — per-subagent `AbortSignal.timeout` (aligned with Kimi Code)
- **run_in_background** — whole swarm goes to a background task, early task-ID return, report written to `output_path`
- **Smart model routing** — task-aware selection from `ctx.modelRegistry`
- **Braille progress bars** — driven by real tool-call progress, 250 ms frames with a state-fingerprint gate (unchanged frames cost nothing)
- **Harness-branded spinner** — single-width braille rotation by default (`PI_MUSELINN_SPINNER=braille|pulse|bounce|moon`, incl. Kimi moon-phase compat)
- **Adaptive layout** — pi-tui Component protocol, status bar width adapts to the terminal (10–60)
- **Three-pane task browser** — status glyphs (○ pending / ◐ running / ✓ done / ✗ failed / ▲ aborted), strikethrough on done rows, overflow collapse (`+N more`, running kept first), named keybindings, `ctrl+shift+t`
- **Cancel / resume** — UserCancellationError + AbortSignal chain, two-step `/cancel`

### Pause & steer (freeze, inspect, redirect)
- **`/pause` full-screen freeze** — the main agent and every swarm subagent
  park at their next safe boundary (tool-call gate): in-flight calls run to
  completion, nothing is aborted, and a later release continues exactly where
  each loop parked. A full-screen overlay — theme-colored pause glyph, live
  hold timer — covers the terminal; esc/enter/space/ctrl+c releases, leaving a
  status line in the session transcript (`已恢复（暂停 13s）— 代理继续运行`).
  When the pause lands mid-tool, the overlay tags it `<tool_call>`.
- **Transcript recording** — every subagent's conversation is written to
  `<sessionDir>/agents/<taskId>/wire.jsonl` (user / assistant → tool-call
  lines, timestamps, stop reasons, usage; tool arguments deliberately
  omitted). Press `c` in the task browser (`/tasks` / `ctrl+shift+t`) for a
  conversation view, or Read the file directly.
- **`/steer <taskId> <message>`** — injects a message into a running subagent
  (swarm session or background task; Tab-completed task ids). The agent loop
  delivers it once the current tool call completes — no cancel/restart needed.
- **Safe boundaries** — cancelling a single parked run (AbortSignal) unwinds
  only that wait, never the gate; background tasks (`run_background`) are not
  frozen (their tool calls bypass the harness gate) but do get transcripts and
  steering.
- **Theme-colored overlay** — icon/headline/body/hints render with the active
  theme's `accent`/`text`/`muted`/`dim`; the terminal background is the
  backdrop. Block glyphs (█ / ⏸) are measured single-width, so the pause
  symbol centers exactly with the text below.

### Goal
- **Lifecycle** — active / paused / blocked / complete / usage_limited / budget_limited
- **Active Guard** — `create_goal` refuses to silently overwrite an active goal (`replace=true` or `/goal replace`)
- **Blocked 3-turn threshold** — three consecutive blocks for the same reason before really blocking
- **Completion-criterion gate** — a declared criterion must be verified before completing (`verified=true` in the same `update_goal` call; documented in the tool description)
- **Triple budget checks** — tokenBudget + turnBudget + wallClockBudgetMs (`turns/tokens/ms/s/minutes/hours`)
- **Goal Queue** — FIFO + high/normal priority + auto-switch + prioritize/drop/skip
- **Persistence** — appendEntry + session_start restore; counters merge **monotonically** (max per goalId), so a stale entry can never pull turns/tokens backwards; `clear()` writes a tombstone entry so completed goals stay completed
- **Context injection** — `<untrusted_objective>` tag into the system prompt
- **Recovery** — compaction preservation + context-overflow detection + 429 detection

### Plan
- **Plan mode** — the LLM explores, writes a plan, and only executes after approval
- **Kimi Code permission model** — bash is NOT blocked in plan mode; it follows the normal permission mode (auto/yolo/manual). Only Write/Edit (outside plan file), TaskStop, CronCreate, CronDelete are blocked
- **Plan file path matching** — exact path, `local://` scheme basename, and resolved absolute path under `sessionDir/plans/` — all three accepted
- **ExitPlanMode reads the plan file** — presentation matches what was actually written to disk
- **Revise keeps your plan** — a revised or cancelled review re-enters plan mode with the same plan object (id/path/content), never a trap, never lost work; review timeout 600 s
- **Restore validation** — a stale persisted active-plan entry with no content and no file on disk deactivates plan mode instead of trapping the session
- **Context injection** — the plan is injected into the system prompt

### Permission
- **18-level policy chain** — `auto` / `yolo` / `manual`; safety policies (destructive, sensitive files) short-circuit before modes
- **Destructive detection** — `rm -rf` / `git push --force` / `drop table` / `git reset --hard` regex recognition, always asks, never short-circuited by session approvals
- **Sensitive-file guard** — `.env` / `id_rsa` / `*.key` read/write interception, even in auto mode
- **Session approval fingerprints** — approvals remembered per sessionId + input fingerprint, never degrading into "permanent allow"
- **Approval panel** — numbered dialog with per-tool action titles ("Run this command?" / "Apply these edits?"), digit-key direct select, four outcomes: Allow once / Always allow (session) / Deny / Deny with reason (reason relayed to the model). In RPC hosts (obsidian-pi etc.) the same choices render over the extension UI protocol (`select` / `input` / `confirm`) instead of the TUI dialog — no more silent denials
- **Subagent gating** — swarm worker tool calls run through the same policy chain (shared in-process manager): `/mode` switches propagate to in-flight subagents by construction, `ask` verdicts degrade to blocks (never silent approval)
- **AGENTS.md hierarchy** — project (nearest `AGENTS.md` or `.kimi-code/AGENTS.md`) → global `$KIMI_CODE_HOME/AGENTS.md` → cross-tool `~/.agents/AGENTS.md`, aggregated; `destructive-ask-always` can upgrade ask to deny
- **Config cache** — permission config cached by file mtime, edits take effect immediately
- **Persistent startup mode** — optional `"defaultMode": "auto" | "yolo" | "manual"` in `~/.pi/agent/permissions.json` (global) or `.pi/permissions.json` (project; global wins on conflict) replaces the hardcoded `manual` startup mode, so new sessions start in your preferred mode without an interactive `/mode` call. A session with a recorded `/mode` history still restores the last used mode; `defaultMode` is the starting point for fresh sessions.

### Task (background + cron)
- **run_background** — subagent in the background, immediate task ID; `output_path` pages full output via Read
- **30-minute timeout** — background tasks auto-fail (`stopReason=timeout_30min`)
- **task_list / task_output / task_stop** — `active_only` filter, `block+timeout` waiting, `offset/limit` paging
- **50-task cap** + **7-day stale cleanup** + orphaned tasks degrade to `process_restart` on restart
- **Incremental persistence** — single-task changes append a single entry; restore stays compatible with old snapshots
- **Cron** — 5-field cron (local timezone) + deterministic jitter (10% of period, ≤15 min) + recurring/one-shot + 50 cap + 7-day stale auto-delete

### Hooks
- **Kimi Code-aligned `[[hooks]]` engine** — reads `$KIMI_CODE_HOME/config.toml` (default `~/.kimi-code/config.toml`) + project `.kimi-code/config.toml`; event/matcher/command/timeout fields
- **Full event coverage** — UserPromptSubmit / PreToolUse / Stop (blockable) + PostToolUse / PostToolUseFailure / PermissionRequest / PermissionResult / SessionStart / SessionEnd / SubagentStart / SubagentStop / StopFailure / Interrupt / PreCompact / PostCompact / Notification
- **Exit-code semantics** — `0` allow (stdout appended as context), `2` block (stderr as reason), anything else / timeout / crash fails open; stdout JSON `permissionDecision: deny` supported
- **Built-in TOML mini-parser** — zero dependencies; invalid rules warn and skip without breaking the extension; mtime-cached hot reload
- **Safety net** — Stop auto-disables after 3 consecutive blocks (anti-loop); every trigger mirrored to `pi.events` for other extensions

### Skills
- **Seven-scope pi-native scanning** — project `.pi/skills`, `.kimi-code/skills` (Kimi compat), `.agents/skills` → user `~/.pi/agent/skills`, `~/.pi/skills`, `$KIMI_CODE_HOME/skills`, `~/.agents/skills`; pi-native dirs win, Kimi dirs as compat layer, dedupe by name
- **Directory + flat forms** — `SKILL.md` subdirs (with auxiliary files) and single `.md` files; full frontmatter fields (name/description/type/whenToUse/disableModelInvocation/arguments, kebab/snake variants)
- **Available to subagents** — swarm and background subagent sessions receive skills via resourceLoader; the main session is injected via `resources_discover` (collision-free: only files from dirs pi does not scan natively, minus names pi already provides)
- **Zero-dependency frontmatter parser** + mtime directory-tree cache

### TUI
- **Closed-box editor** — Kimi Code's `wrapWithSideBorders` ported: pi-tui's horizontal-only borders post-processed into a `╭╮│╰╯` closed box; spinner + working state (Thinking/Streaming/Running tools) embedded in the top border; three styles `plain | boxed | compact` (pi-spark-style info border = compact), default boxed; model name opt-in via `"modelInBorder": true`

The first content line carries a prompt chevron (`│❯ text │`), padding is
  clamped to ≥2 so the bars never touch the text or cursor.
- **`/tui` command** — hot-switch styles without restarting (pi preserves text/focus/keybindings when swapping editors); `/tui timing` shows render timing; config persisted to `~/.pi/agent/muselinn-tui.json` (project `.pi/` override)
- **Plan badge** — `plan` text badge on the top border while plan mode is active (no border recoloring — zero conflict with pi's thinking-level colors)
- **Timing probe** — `PI_MUSELINN_HARNESS_TUI_TIMING=1` records editor `render()` P50/P99; spinner only ticks at 250 ms while the agent works
- **Shimmer working message (OMP-style)** — the working label in the editor border gets a wall-clock driven light-band sweep (`classic` cosine band or `kitt` K.I.T.T. scanner); the crest paints accent+bold so dim text stays legible mid-animation. `low: dim / mid: muted / high: accent` by default; `/tui shimmer <classic|kitt|disabled>` switches live, config persisted
- **Stable animation frame-rate** — the keep-alive timer uses a fixed 200ms quiet gate (≈10fps ceiling) so the animation cadence never changes; natural streaming renders ride pi's own frames at zero extra cost, and a stalled agent loop costs at most ~10 full-tree renders per second even on very large sessions. (Adaptive thresholds based on measured render latency were tried and rejected: latency noise made the frame rate stutter.)

### Ask (interactive questions)
- **`ask_user_question` tool** — the agent asks 1-4 structured questions in one tabbed dialog: per-question header tabs (`1/3 · header`, ←/→/Tab to switch), numbered options with description sub-lines, `multi_select` checkboxes (Space toggles, Enter confirms), and an automatic free-text **Other** option on every question; digit keys 1-9 jump straight to an option, arrows/jk navigate, Esc cancels
- **Robust by default** — long option lists scroll inside a bounded window, duplicate answers are deduplicated, and questions can be posed from background tasks without wedging the UI
- **Previews, notes, chat row** — options can carry Markdown **previews** (side-by-side pane on wide terminals, stacked below on narrow ones); attach a per-option **note** with `n`; a **Chat about this** row ends the dialog with a `chat` result so the user can discuss the question instead of answering it
- **Shared dialog component** — the same component backs permission approval (single-select, no Other); in print mode the tool returns the questions as text instead of blocking, and in RPC mode permission approvals fall back to `select`/`confirm`/`input`
- **Answer reporting** — per-question answers (multi-select as an array); skipped questions and Esc-cancelled dialogs are reported distinctly
- **Auto-mode safe** — auto mode denies `ask_user_question` by policy (no unattended hangs)

### Todo
- **Inline panel** — above-editor widget with roman-numeral phase tree (`Ⅰ. Scanner · 2/4`), `/todo toggle` expand/collapse; finished tasks auto-clear after `PI_MUSELINN_TODO_CLEAR_DELAY` seconds (default 60, `0` = instant, `-1` = manual) so completed plans fade out of the HUD instead of lingering
- **`/todo` command** — full oh-my-pi phase model: `init`, `start`, `done`, `drop`, `rm`, `append`, `export`, `import`, `copy`, `edit`, `add_notes`, `update_details`, bare `/todo` prints Markdown
- **`todo_list` tool** — model-driven task management with same ops
- **Reminder system** — incomplete todos injected as `<system-reminder>` when agent stops (max 3 reminders, debounced)
- **Subagent matching** — pending tasks matching swarm subagent descriptions get highlighted with `◔` spinner
- **Markdown round-trip** — `/todo export/import` for persistence and sharing between sessions
- **Notes** — per-task notes via `add_notes` / `update_details`
- **Phase counts** — widget header shows `N active · M pending · K done`
- **Session persistence** — survives hot-reload and session restart

### Web fetch
- **`fetch_url` tool** — no-auth URL fetch (20s timeout, 5MB stream cap, redirect follow); HTML → readable text (dependency-free extractor), JSON → pretty-print, everything else raw; 20k char cap with `max_chars` tuning
- **Full web access via [pi-web-access](https://pi.dev/packages/pi-web-access)** — recommended companion for `web_search` / `fetch_content` (multi-provider search, GitHub repo cloning, PDF / YouTube / local-video understanding). Its `web_search` and `fetch_content` tools sit in the permission system's read-only allowlist — auto-approved in every mode, including plan mode, so no approval prompts interrupt the flow. Install: `pi install npm:pi-web-access`

### Plugins (declarative bundles)
- **`muselinn.plugin.json`** — six declarative capabilities: `skills` (skill dirs merged into discovery), `sessionStart` (context injected on the session's first turn), `hooks` (merged into the `[[hooks]]` engine), `commands` (.md files become slash commands), plus `mcpServers` / `interface` recorded with skipped-diagnostics
- **Discovery** — project `.pi/plugins/*/` then user `~/.pi/agent/plugins/*/`, first-wins name dedupe; `/plugins` lists capabilities and diagnostics

### Output truncation
- **Oversized tool results spill to disk** — results over the spill threshold are written to `<sessionDir>/tool-results/` and replaced in context with a sanitized head+tail preview carrying the `output_path` and read-paging instructions (Kimi `toolResultTruncation` pattern)
- **Window-aware threshold** — the threshold scales with the active model's context window (`max(40k, window × 4 chars/token)`, capped at 800k chars ≈ 200k tokens), so 1M-context models keep far more output in-context; `PI_TRUNCATION_THRESHOLD` overrides it explicitly

## Commands

| Command | Description |
|---------|-------------|
| `/swarm on\|off` | Toggle swarm mode |
| `/pause` | Freeze all agents at the next safe boundary (esc/enter/space/ctrl+c resumes) |
| `/steer <taskId> <message>` | Send a message to a running subagent |
| `/cancel` | Cancel current work (two-step confirm) |
| `/resume` | Resume an interrupted swarm |
| `/tasks` | Task browser (`ctrl+shift+t`) |
| `/goal <objective>` | Set a goal |
| `/todo` | Task plan with phase model; shortcuts: `start` `done` `drop` `export` `import` `copy` `edit` `toggle` |
| `/todo toggle` | Expand/collapse the todo panel (replaces former `alt+t`) |
| `/plugins` | List loaded plugins and their capabilities |
| `/swarm-status` | Show status |

> `/goal` `/swarm` `/plan` `/mode` `/tui` all support Tab completion.

## Tools

| Tool | Description |
|------|-------------|
| `agent_swarm` | Batch parallel subagents (`max_concurrency` / `run_in_background` / `output_path` / `model_map`) |
| `agent` | Single subagent |
| `create_goal` / `get_goal` / `update_goal` / `set_goal_budget` | Goal management |
| `enter_plan_mode` / `exit_plan_mode` | Plan mode |
| `ask_user_question` | Tabbed structured questions (multi-select, Other free text) |
| `todo_list` | Model-driven task plan with inline panel |
| `fetch_url` | No-auth URL fetch with content-aware extraction |
| `run_background` / `task_list` / `task_output` / `task_stop` | Background tasks |
| `cron_create` / `cron_list` / `cron_delete` | Cron jobs |

## Kimi Code alignment

Against the [Kimi Code CLI docs — Agents & Subagents](https://www.kimi.com/code/docs/kimi-code-cli/customization/agents.html):

| Capability | Status | Notes |
|------------|--------|-------|
| Three built-in subagent types (coder/explore/plan) | ✅ | coder=read/write+bash; explore=read-only; plan=read-only, no shell |
| Context isolation | ✅ | Independent sessions; only final results flow back |
| Parallel dispatch + max_concurrency | ✅ | Real worker-pool cap + progressive launch |
| 30-minute timeout | ✅ | Per-subagent AbortSignal.timeout |
| Background execution (run_in_background) | ✅ | Early task-ID return, blockable task_output, report to output_path |
| Resume an existing subagent | ⚠️ | Conservative semantics: same-id re-run; resume validated (saved state + nothing in flight + remaining items); true session resume pending pi-coding-agent API |
| Nested subagents (coder spawning more) | ❌ | Deliberately closed — no recursive dispatch; subagent toolset excludes agent/agent_swarm |
| Permission inheritance | ✅ | Worker tool calls pass through the shared policy chain; /mode propagates by construction; asks degrade to blocks |
| Instruction-file hierarchy | ✅ | Project `AGENTS.md` / `.kimi-code/AGENTS.md` → `$KIMI_CODE_HOME/AGENTS.md` → `~/.agents/AGENTS.md` |
| wire.jsonl session persistence | ⚠️ | Per-subagent transcripts (`agents/<id>/wire.jsonl`, user/assistant/tool-call, no tool args) + conversation viewer; full session resume pending pi-coding-agent API |
| Hooks (`[[hooks]]` lifecycle) | ✅ | All 16 events, exit-code/stdout-JSON block semantics, fail-open |
| Agent Skills (four scopes) | ✅+ | Kimi's four covered and extended to seven pi-native scopes; directory + flat forms; subagent + main-session channels |

## Architecture

Core/adapter split: `packages/core/` is pure logic with **zero pi imports**;
the repo root holds the pi adapter (entry, pi-tui components, tool registration).

```
pi-muselinn-harness/
├── index.ts               entry (agent_swarm/agent tools, background runner, module wiring)
├── state.ts               shared state
├── packages/core/         @muselinn/core — pure logic, no host imports
│   ├── ports.ts           host contracts (PersistencePort, ScopeDirs)
│   ├── text-utils.ts      visibleWidth & friends
│   ├── shell-output.ts    control-sequence sanitizer
│   ├── truncation/        oversized tool-result spill (pure)
│   ├── webfetch/          HTML→text / JSON extraction (pure)
│   ├── completions.ts     slash-command argument completions
│   ├── ask/               question spec + formatting (pure)
│   ├── todo/              todo model + Kimi folding strategy (pure)
│   ├── plugin/            muselinn.plugin.json manifest parse/discovery
│   ├── goal/              Goal module (state machine, budgets, queue, persistence)
│   ├── plan/              Plan module (tool whitelist, path guard, injection)
│   ├── permission/        Permission module (18-level chain, approval contract)
│   ├── pause/             pause gate + full-screen overlay layout (pure, theme-injectable)
│   ├── hooks/             Hooks module (TOML mini-parser, executor, 16 events)
│   ├── skills/            Skills module (frontmatter, seven-scope scanner)
│   ├── swarm/             pure swarm half
│   │   ├── types.ts       state/constants (+ goal re-export)
│   │   ├── helpers.ts     braille bars / layout / spinner (memoized)
│   │   ├── estimator.ts   progress estimation (geometric mean)
│   │   ├── widget-lines.ts braille grid line builders (pure)
│   │   ├── wrap-tools.ts  permission gate wrapper (pure)
│   │   ├── resume-guard.ts resume ownership/idle validation (pure)
│   │   ├── report.ts      swarm report formatting
│   │   └── task-list-utils.ts collapse + key routing
│   ├── task/              cron + task persistence state (pure)
│   └── tui/               box/config/parse/switch/timing (pure chrome parts)
├── swarm/                 adapter: subagent execution, /swarm commands,
│                          SwarmWidgetComponent, three-pane task browser
├── pause/                 adapter: /pause overlay component, /steer command
├── task/                  adapter: background task manager (session spawn)
├── tui/                   adapter: MuselinnEditor + event wiring
├── ask/                   adapter: question dialog + ask_user_question tool
├── todo/                  adapter: todo_list tool + inline panel widget
├── webfetch/              adapter: fetch_url tool
├── plugin/                adapter: plugin loader + /plugins command
└── tests/                 node-level unit tests (below)
```

## Tests

Pure node-level unit tests, no model quota needed (28 suites, 830+ assertions):

```bash
npm test                                        # all suites (node tests/run-all.mjs)
npm run typecheck                               # full-package tsc (strict, es2024)
```

or individually:

```bash
node tests/musepi-config.test.mjs                 # MusePi config compat — 9
node tests/permission.test.mjs                    # Permission policy chain + subagent gate — 26
node tests/goal.test.mjs                          # Goal state machine + monotonic restore — 32
node tests/plan.test.mjs                          # Plan mode round-trip + restore validation — 42
node tests/task.test.mjs                          # Task restore/list/output/block + loader runtime — 16
node tests/cron.test.mjs                          # Cron subsystem — 16
node tests/hooks.test.mjs                         # Hooks engine — 43
node tests/skills.test.mjs                        # Skills scan/parse/scopes/discover — 38
node tests/tui.test.mjs                           # TUI collapse/keys/completions/spinner — 63
node tests/tui-box.test.mjs                       # TUI box/config/probe/switch — 63
node tests/tui-adapter.test.mjs                   # TUI adapter working-state render path — 4
node tests/agent-file.test.mjs                   # agent file discovery/parse — 11
node tests/agent-lifecycle.test.mjs               # agent lifecycle events — 6
node tests/ask.test.mjs                           # ask spec/dialog/answers/approval titles — 123
node tests/tool-policy.test.mjs                  # tool policy gate — 13
node tests/pause-gate.test.mjs                    # pause gate + full-screen render — 55
node tests/transcript.test.mjs                     # transcript wire.jsonl recording — 26
node tests/steering.test.mjs                       # steering queue drain — 8
node tests/todo.test.mjs                          # todo model + folding strategy — 99
node tests/shell-output.test.mjs                  # output sanitizer — 21
node tests/shimmer.test.mjs                     # shimmer sweep engine — 10
node tests/truncation.test.mjs                    # tool-result spill + window-aware threshold — 21
node tests/approval-rpc.test.mjs                  # RPC approval fallback (select/confirm) — 21
node tests/resume-guard.test.mjs                  # swarm resume validation — 6
node tests/webfetch.test.mjs                      # web extraction — 12
node tests/plugin.test.mjs                        # plugin manifest/discovery — 17
node tests/renderer.test.mjs                      # incremental renderer buffer/tree — 16
node tests/stream-rules.test.mjs                  # stream entry rules — 14
```

The suites run on Node 22/24/26 (22.6–22.17 via
`--experimental-strip-types`, older legs via `tests/ts-esm-loader.mjs`; 22.18+
strips types natively). CI runs the full matrix — macOS + ubuntu + windows ×
node 24/26 — on every push and PR.

## Roadmap

- **i18n** — bilingual harness UI text and notifications (docs are already split en/zh-CN; the project page has an EN/中 toggle)
- **Math renderer graduation** — merge `feature/math-renderer` once compaction-path context safety is confirmed
- **Clustered diff preview** — kimi-style ±3-line clustered diffs in edit/write approval messages (deferred from the P1 batch)
- **True fullscreen** — the pause overlay already covers the whole terminal (shipped in 0.9.19); container-swap fullscreen for the task browser (kimi tasks-browser pattern) is still open — no alt-screen, preserving terminal scrollback

## Dependencies

- Pi >= 0.80.0
- `@earendil-works/pi-coding-agent`, `@earendil-works/pi-ai`, `@earendil-works/pi-tui` (peers)
- `typebox`

## Experimental branches

- [`feature/math-renderer`](https://github.com/MuseLinn/pi-muselinn-harness/tree/feature/math-renderer) — renders `$$...$$` display math in assistant messages via [txm](https://github.com/thatmagicalcat/txm) (cell-based 2D typesetting, works in Windows Terminal; no image protocol). Context-safe: the original Markdown is restored before every LLM call. Enable with `/tui math on` after `cargo install txm`.

## Acknowledgments

Design and implementation inspired by these open-source projects:

### [Kimi Code](https://github.com/MoonshotAI/Kimi-code) (Moonshot AI)
- Agent Swarm concurrency architecture (max_concurrency worker pool, 30-min timeout, run_in_background)
- Goal system design (GoalActor tracking, Budget Report, blocked 3-turn threshold, context injection)
- Plan-mode lifecycle (enter/exit/approve/reject, ExitPlanMode disk read)
- Permission policy chain (auto/yolo/manual, destructive-always-ask, AGENTS.md priority)
- Cron scheduling (5-field + jitter + 7-day stale + 50 cap)
- TUI component design (braille progress bars, three-pane task browser, `wrapWithSideBorders` closed-box editor)
- Cancel/resume mechanism (AbortSignal chain, UserCancellationError)

### [pi-spark](https://github.com/zlliang/pi-spark) (zlliang)
- Editor top-border info slots (spinner + working state + model embedded in the border)
- Component-replacement TUI customization path (`setEditorComponent` / `setFooter` / `setWidget`)

### [@narumitw/pi-goal](https://www.npmjs.com/package/@narumitw/pi-goal) (narumitw)
- Goal Queue FIFO + auto-switch mechanism
- usage_limited / budget_limited state design
- Wrap-up instruction injection (post-budget behavior)
- Stale Tool Blocking design
- Compaction retention policy

### [pi-codex-goal](https://www.npmjs.com/package/pi-codex-goal) (fitchmultz)
- Goal persistence (appendEntry + session_start restore)
- Goal state transitions
- Budget checking
- Recovery Machine concept (simplified)

---

**Note**: this extension is mostly an independent implementation. Exception: `tui/box.ts`'s `wrapWithSideBorders` is ported from Kimi Code (MIT), with attribution kept in comments and used under the MIT license.

## Changelog

See [CHANGELOG.md](CHANGELOG.md) for the full version history.

## License

[MIT](LICENSE)

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