Establish a harness-first Rust port foundation

This creates a new rust/ workspace for the compatibility-first port effort, adds a README that explains the milestone and verification commands, links the new Rust docs from the repository root, and seeds a minimal CLI/runtime/registry/harness skeleton that can read the upstream TypeScript sources. Constraint: Initial delivery had to stay inside rust/ except for the root README pointer Constraint: The workspace started empty, so the first milestone needed proof-oriented scaffolding before broader porting Rejected: Wait for tmux worker integration output | local verified implementation finished first and worker merges conflicted with local files Rejected: Start with a feature-complete CLI rewrite | too risky without manifest and bootstrap harness scaffolding Confidence: medium Scope-risk: moderate Reversibility: clean Directive: Grow compatibility from extracted manifests and tests before claiming drop-in parity Tested: cargo fmt --all; cargo check --workspace; cargo test --workspace; cargo run -p rusty-claude-cli -- --help; cargo run -p rusty-claude-cli -- dump-manifests; cargo run -p rusty-claude-cli -- bootstrap-plan Not-tested: Real command execution parity; state/config fixture round-trips; bridge/MCP/plugin protocol replay Related: /home/bellman/Workspace/rusty-claude-code/.omx/plans/prd-rust-port-claude-code-dropin-cli.md Related: /home/bellman/Workspace/rusty-claude-code/.omx/plans/test-spec-rust-port-claude-code-dropin-cli.md
docs: emphasize leaked source and include original tweet
2026-04-05 16:39:04 +08:00 · 2026-03-31 15:11:08 +00:00 · 2026-03-31 15:11:08 +00:00 · 2026-03-31 15:11:08 +00:00 · 2026-03-31 15:11:08 +00:00 · 2026-03-31 15:10:58 +00:00
2021 changed files with 515898 additions and 105 deletions
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+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/94d871d03ed6410a81a8339ecba4f3dd.json
+++ b/.port_sessions/94d871d03ed6410a81a8339ecba4f3dd.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "94d871d03ed6410a81a8339ecba4f3dd",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/994767f1199c44d8b2052e758b4d4d3c.json
+++ b/.port_sessions/994767f1199c44d8b2052e758b4d4d3c.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "994767f1199c44d8b2052e758b4d4d3c",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/9bd50e453f24444d970dedddf3c85027.json
+++ b/.port_sessions/9bd50e453f24444d970dedddf3c85027.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "9bd50e453f24444d970dedddf3c85027",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/9d8eecbecd7d452697d2e8b5be415bd4.json
+++ b/.port_sessions/9d8eecbecd7d452697d2e8b5be415bd4.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "9d8eecbecd7d452697d2e8b5be415bd4",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/9f87d3fe67bb4aebbe0effd034382685.json
+++ b/.port_sessions/9f87d3fe67bb4aebbe0effd034382685.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "9f87d3fe67bb4aebbe0effd034382685",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/a0e9fbca75ab44e7b89022156f18f60a.json
+++ b/.port_sessions/a0e9fbca75ab44e7b89022156f18f60a.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "a0e9fbca75ab44e7b89022156f18f60a",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/a1d0491f8c92424fb2a2c3e2333f39d0.json
+++ b/.port_sessions/a1d0491f8c92424fb2a2c3e2333f39d0.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "a1d0491f8c92424fb2a2c3e2333f39d0",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/a277471dc4cf4d7f86ff065fd77ccb88.json
+++ b/.port_sessions/a277471dc4cf4d7f86ff065fd77ccb88.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "a277471dc4cf4d7f86ff065fd77ccb88",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/a3b47cec34694898919020369ab6af13.json
+++ b/.port_sessions/a3b47cec34694898919020369ab6af13.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "a3b47cec34694898919020369ab6af13",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/a6e9e4b6daac4f5a82e366cb12313eee.json
+++ b/.port_sessions/a6e9e4b6daac4f5a82e366cb12313eee.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "a6e9e4b6daac4f5a82e366cb12313eee",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/ad7f38d318df458bb1f0f0492fa71f02.json
+++ b/.port_sessions/ad7f38d318df458bb1f0f0492fa71f02.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "ad7f38d318df458bb1f0f0492fa71f02",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/b3b5eb702163461bb0f0dd43a82528d8.json
+++ b/.port_sessions/b3b5eb702163461bb0f0dd43a82528d8.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "b3b5eb702163461bb0f0dd43a82528d8",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/b4829661195449c1af0c37e8c87ce0a5.json
+++ b/.port_sessions/b4829661195449c1af0c37e8c87ce0a5.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "b4829661195449c1af0c37e8c87ce0a5",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/b4f0e18929d54d948ad29bd1dd43a85d.json
+++ b/.port_sessions/b4f0e18929d54d948ad29bd1dd43a85d.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "b4f0e18929d54d948ad29bd1dd43a85d",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/bd2f9891b77d4ab29b022f6d830c6234.json
+++ b/.port_sessions/bd2f9891b77d4ab29b022f6d830c6234.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "bd2f9891b77d4ab29b022f6d830c6234",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/cbe249de5950459da16440988e2ddc54.json
+++ b/.port_sessions/cbe249de5950459da16440988e2ddc54.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "cbe249de5950459da16440988e2ddc54",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/db0aea45e8984d57898e91803bdcdc7c.json
+++ b/.port_sessions/db0aea45e8984d57898e91803bdcdc7c.json
@@ -0,0 +1,8 @@
+{
+  "session_id": "db0aea45e8984d57898e91803bdcdc7c",
+  "messages": [
+    "review MCP tool"
+  ],
+  "input_tokens": 3,
+  "output_tokens": 13
+}
--- a/.port_sessions/dbd0d1c8f734444a8ed02f77f3d9fc1a.json
+++ b/.port_sessions/dbd0d1c8f734444a8ed02f77f3d9fc1a.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "dbd0d1c8f734444a8ed02f77f3d9fc1a",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/e8fff9feb2ae4d8ca94575ed8fa5a03f.json
+++ b/.port_sessions/e8fff9feb2ae4d8ca94575ed8fa5a03f.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "e8fff9feb2ae4d8ca94575ed8fa5a03f",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/e9433328bba545d8ac94e2bbac488aec.json
+++ b/.port_sessions/e9433328bba545d8ac94e2bbac488aec.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "e9433328bba545d8ac94e2bbac488aec",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/f074c37ae3b84a959da394aec7ec3c68.json
+++ b/.port_sessions/f074c37ae3b84a959da394aec7ec3c68.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "f074c37ae3b84a959da394aec7ec3c68",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/f2efb0de41f949859b57854e58efad70.json
+++ b/.port_sessions/f2efb0de41f949859b57854e58efad70.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "f2efb0de41f949859b57854e58efad70",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/f48004afd90f41d081a6129e96ad7651.json
+++ b/.port_sessions/f48004afd90f41d081a6129e96ad7651.json
@@ -0,0 +1,8 @@
+{
+  "session_id": "f48004afd90f41d081a6129e96ad7651",
+  "messages": [
+    "review MCP tool"
+  ],
+  "input_tokens": 3,
+  "output_tokens": 13
+}
--- a/.port_sessions/f5def6f008f64a918bb0f5b0d6ec3db6.json
+++ b/.port_sessions/f5def6f008f64a918bb0f5b0d6ec3db6.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "f5def6f008f64a918bb0f5b0d6ec3db6",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/f5efe1bbcb124e3191e4417becbe1f81.json
+++ b/.port_sessions/f5efe1bbcb124e3191e4417becbe1f81.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "f5efe1bbcb124e3191e4417becbe1f81",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/.port_sessions/f689195c4cf94eb998a461da808075a3.json
+++ b/.port_sessions/f689195c4cf94eb998a461da808075a3.json
@@ -0,0 +1,8 @@
+{
+  "session_id": "f689195c4cf94eb998a461da808075a3",
+  "messages": [
+    "review MCP tool"
+  ],
+  "input_tokens": 3,
+  "output_tokens": 13
+}
--- a/.port_sessions/f77644ede86245eba5198322de05e4a4.json
+++ b/.port_sessions/f77644ede86245eba5198322de05e4a4.json
@@ -0,0 +1,8 @@
+{
+  "session_id": "f77644ede86245eba5198322de05e4a4",
+  "messages": [
+    "review MCP tool"
+  ],
+  "input_tokens": 3,
+  "output_tokens": 13
+}
--- a/.port_sessions/ffbf6be4ed074ead98bcf18e7710e6a1.json
+++ b/.port_sessions/ffbf6be4ed074ead98bcf18e7710e6a1.json
@@ -0,0 +1,9 @@
+{
+  "session_id": "ffbf6be4ed074ead98bcf18e7710e6a1",
+  "messages": [
+    "review MCP tool",
+    "review MCP tool"
+  ],
+  "input_tokens": 6,
+  "output_tokens": 32
+}
--- a/README.md
+++ b/README.md
@@ -1,123 +1,261 @@
-# Claude Code Python Porting Workspace
+# Claude Code — Leaked Source (2026-03-31)

-> The primary `src/` tree in this repository is now dedicated to **Python porting work**. The March 31, 2026 Claude Code source exposure is part of the project's background, but the tracked repository is now centered on Python source rather than the exposed TypeScript snapshot.
+> **On March 31, 2026, the full source code of Anthropic's Claude Code CLI was leaked** via a `.map` file exposed in their npm registry.

 ---

-## Porting Status
+## How It Leaked

-The main source tree is now Python-first.
+[Chaofan Shou (@Fried_rice)](https://x.com/Fried_rice) discovered the leak and posted it publicly:

- `src/` contains the active Python porting workspace
- `tests/` verifies the current Python workspace
- the exposed snapshot is no longer part of the tracked repository state
+> **"Claude code source code has been leaked via a map file in their npm registry!"**
+>
+> — [@Fried_rice, March 31, 2026](https://x.com/Fried_rice/status/2038894956459290963)

-The current Python workspace is not yet a complete one-to-one replacement for the original system, but the primary implementation surface is now Python.
+The source map file in the published npm package contained a reference to the full, unobfuscated TypeScript source, which was downloadable as a zip archive from Anthropic's R2 storage bucket.

-## Why this rewrite exists
+---

-I originally studied the exposed codebase to understand its harness, tool wiring, and agent workflow. After spending more time with the legal and ethical questions—and after reading the essay linked below—I did not want the exposed snapshot itself to remain the main tracked source tree.
+## Overview

-This repository now focuses on Python porting work instead.
+Claude Code is Anthropic's official CLI tool that lets you interact with Claude directly from the terminal to perform software engineering tasks — editing files, running commands, searching codebases, managing git workflows, and more.

-## Repository Layout
+This repository contains the leaked `src/` directory.

-```text
-.
-├── src/                                # Python porting workspace
-│   ├── __init__.py
-│   ├── commands.py
-│   ├── main.py
-│   ├── models.py
-│   ├── port_manifest.py
-│   ├── query_engine.py
-│   ├── task.py
-│   └── tools.py
-├── tests/                              # Python verification
-├── assets/omx/                         # OmX workflow screenshots
-├── 2026-03-09-is-legal-the-same-as-legitimate-ai-reimplementation-and-the-erosion-of-copyleft.md
-└── README.md
+- **Leaked on**: 2026-03-31
+- **Language**: TypeScript
+- **Runtime**: Bun
+- **Terminal UI**: React + [Ink](https://github.com/vadimdemedes/ink) (React for CLI)
+- **Scale**: ~1,900 files, 512,000+ lines of code
+
+---
+
+## Rust port foundation
+
+A compatibility-first Rust port workspace now lives in [`rust/`](rust/). Start with [`rust/README.md`](rust/README.md) for the current milestone scope, workspace layout, and verification commands.
+
+## Directory Structure
+
+```
+src/
+├── main.tsx                 # Entrypoint (Commander.js-based CLI parser)
+├── commands.ts              # Command registry
+├── tools.ts                 # Tool registry
+├── Tool.ts                  # Tool type definitions
+├── QueryEngine.ts           # LLM query engine (core Anthropic API caller)
+├── context.ts               # System/user context collection
+├── cost-tracker.ts          # Token cost tracking
+│
+├── commands/                # Slash command implementations (~50)
+├── tools/                   # Agent tool implementations (~40)
+├── components/              # Ink UI components (~140)
+├── hooks/                   # React hooks
+├── services/                # External service integrations
+├── screens/                 # Full-screen UIs (Doctor, REPL, Resume)
+├── types/                   # TypeScript type definitions
+├── utils/                   # Utility functions
+│
+├── bridge/                  # IDE integration bridge (VS Code, JetBrains)
+├── coordinator/             # Multi-agent coordinator
+├── plugins/                 # Plugin system
+├── skills/                  # Skill system
+├── keybindings/             # Keybinding configuration
+├── vim/                     # Vim mode
+├── voice/                   # Voice input
+├── remote/                  # Remote sessions
+├── server/                  # Server mode
+├── memdir/                  # Memory directory (persistent memory)
+├── tasks/                   # Task management
+├── state/                   # State management
+├── migrations/              # Config migrations
+├── schemas/                 # Config schemas (Zod)
+├── entrypoints/             # Initialization logic
+├── ink/                     # Ink renderer wrapper
+├── buddy/                   # Companion sprite (Easter egg)
+├── native-ts/               # Native TypeScript utils
+├── outputStyles/            # Output styling
+├── query/                   # Query pipeline
+└── upstreamproxy/           # Proxy configuration
 ```

-## Python Workspace Overview
+---

-The new Python `src/` tree currently provides:
+## Core Architecture

- **`port_manifest.py`** — summarizes the current Python workspace structure
- **`models.py`** — dataclasses for subsystems, modules, and backlog state
- **`commands.py`** — Python-side command port metadata
- **`tools.py`** — Python-side tool port metadata
- **`query_engine.py`** — renders a Python porting summary from the active workspace
- **`main.py`** — a CLI entrypoint for manifest and summary output
+### 1. Tool System (`src/tools/`)

-## Quickstart
+Every tool Claude Code can invoke is implemented as a self-contained module. Each tool defines its input schema, permission model, and execution logic.

-Render the Python porting summary:
+| Tool | Description |
+|---|---|
+| `BashTool` | Shell command execution |
+| `FileReadTool` | File reading (images, PDFs, notebooks) |
+| `FileWriteTool` | File creation / overwrite |
+| `FileEditTool` | Partial file modification (string replacement) |
+| `GlobTool` | File pattern matching search |
+| `GrepTool` | ripgrep-based content search |
+| `WebFetchTool` | Fetch URL content |
+| `WebSearchTool` | Web search |
+| `AgentTool` | Sub-agent spawning |
+| `SkillTool` | Skill execution |
+| `MCPTool` | MCP server tool invocation |
+| `LSPTool` | Language Server Protocol integration |
+| `NotebookEditTool` | Jupyter notebook editing |
+| `TaskCreateTool` / `TaskUpdateTool` | Task creation and management |
+| `SendMessageTool` | Inter-agent messaging |
+| `TeamCreateTool` / `TeamDeleteTool` | Team agent management |
+| `EnterPlanModeTool` / `ExitPlanModeTool` | Plan mode toggle |
+| `EnterWorktreeTool` / `ExitWorktreeTool` | Git worktree isolation |
+| `ToolSearchTool` | Deferred tool discovery |
+| `CronCreateTool` | Scheduled trigger creation |
+| `RemoteTriggerTool` | Remote trigger |
+| `SleepTool` | Proactive mode wait |
+| `SyntheticOutputTool` | Structured output generation |

-```bash
-python3 -m src.main summary
+### 2. Command System (`src/commands/`)
+
+User-facing slash commands invoked with `/` prefix.
+
+| Command | Description |
+|---|---|
+| `/commit` | Create a git commit |
+| `/review` | Code review |
+| `/compact` | Context compression |
+| `/mcp` | MCP server management |
+| `/config` | Settings management |
+| `/doctor` | Environment diagnostics |
+| `/login` / `/logout` | Authentication |
+| `/memory` | Persistent memory management |
+| `/skills` | Skill management |
+| `/tasks` | Task management |
+| `/vim` | Vim mode toggle |
+| `/diff` | View changes |
+| `/cost` | Check usage cost |
+| `/theme` | Change theme |
+| `/context` | Context visualization |
+| `/pr_comments` | View PR comments |
+| `/resume` | Restore previous session |
+| `/share` | Share session |
+| `/desktop` | Desktop app handoff |
+| `/mobile` | Mobile app handoff |
+
+### 3. Service Layer (`src/services/`)
+
+| Service | Description |
+|---|---|
+| `api/` | Anthropic API client, file API, bootstrap |
+| `mcp/` | Model Context Protocol server connection and management |
+| `oauth/` | OAuth 2.0 authentication flow |
+| `lsp/` | Language Server Protocol manager |
+| `analytics/` | GrowthBook-based feature flags and analytics |
+| `plugins/` | Plugin loader |
+| `compact/` | Conversation context compression |
+| `policyLimits/` | Organization policy limits |
+| `remoteManagedSettings/` | Remote managed settings |
+| `extractMemories/` | Automatic memory extraction |
+| `tokenEstimation.ts` | Token count estimation |
+| `teamMemorySync/` | Team memory synchronization |
+
+### 4. Bridge System (`src/bridge/`)
+
+A bidirectional communication layer connecting IDE extensions (VS Code, JetBrains) with the Claude Code CLI.
+
+- `bridgeMain.ts` — Bridge main loop
+- `bridgeMessaging.ts` — Message protocol
+- `bridgePermissionCallbacks.ts` — Permission callbacks
+- `replBridge.ts` — REPL session bridge
+- `jwtUtils.ts` — JWT-based authentication
+- `sessionRunner.ts` — Session execution management
+
+### 5. Permission System (`src/hooks/toolPermission/`)
+
+Checks permissions on every tool invocation. Either prompts the user for approval/denial or automatically resolves based on the configured permission mode (`default`, `plan`, `bypassPermissions`, `auto`, etc.).
+
+### 6. Feature Flags
+
+Dead code elimination via Bun's `bun:bundle` feature flags:
+
+```typescript
+import { feature } from 'bun:bundle'
+
+// Inactive code is completely stripped at build time
+const voiceCommand = feature('VOICE_MODE')
+  ? require('./commands/voice/index.js').default
+  : null
 ```

-Print the current Python workspace manifest:
+Notable flags: `PROACTIVE`, `KAIROS`, `BRIDGE_MODE`, `DAEMON`, `VOICE_MODE`, `AGENT_TRIGGERS`, `MONITOR_TOOL`

-```bash
-python3 -m src.main manifest
+---
+
+## Key Files in Detail
+
+### `QueryEngine.ts` (~46K lines)
+
+The core engine for LLM API calls. Handles streaming responses, tool-call loops, thinking mode, retry logic, and token counting.
+
+### `Tool.ts` (~29K lines)
+
+Defines base types and interfaces for all tools — input schemas, permission models, and progress state types.
+
+### `commands.ts` (~25K lines)
+
+Manages registration and execution of all slash commands. Uses conditional imports to load different command sets per environment.
+
+### `main.tsx`
+
+Commander.js-based CLI parser + React/Ink renderer initialization. At startup, parallelizes MDM settings, keychain prefetch, and GrowthBook initialization for faster boot.
+
+---
+
+## Tech Stack
+
+| Category | Technology |
+|---|---|
+| Runtime | [Bun](https://bun.sh) |
+| Language | TypeScript (strict) |
+| Terminal UI | [React](https://react.dev) + [Ink](https://github.com/vadimdemedes/ink) |
+| CLI Parsing | [Commander.js](https://github.com/tj/commander.js) (extra-typings) |
+| Schema Validation | [Zod v4](https://zod.dev) |
+| Code Search | [ripgrep](https://github.com/BurntSushi/ripgrep) (via GrepTool) |
+| Protocols | [MCP SDK](https://modelcontextprotocol.io), LSP |
+| API | [Anthropic SDK](https://docs.anthropic.com) |
+| Telemetry | OpenTelemetry + gRPC |
+| Feature Flags | GrowthBook |
+| Auth | OAuth 2.0, JWT, macOS Keychain |
+
+---
+
+## Notable Design Patterns
+
+### Parallel Prefetch
+
+Startup time is optimized by prefetching MDM settings, keychain reads, and API preconnect in parallel — before heavy module evaluation begins.
+
+```typescript
+// main.tsx — fired as side-effects before other imports
+startMdmRawRead()
+startKeychainPrefetch()
 ```

-List the current Python modules:
+### Lazy Loading

-```bash
-python3 -m src.main subsystems --limit 16
-```
+Heavy modules (OpenTelemetry ~400KB, gRPC ~700KB) are deferred via dynamic `import()` until actually needed.

-Run verification:
+### Agent Swarms

-```bash
-python3 -m unittest discover -s tests -v
-```
+Sub-agents are spawned via `AgentTool`, with `coordinator/` handling multi-agent orchestration. `TeamCreateTool` enables team-level parallel work.

-Run the parity audit against the local ignored archive (when present):
+### Skill System

-```bash
-python3 -m src.main parity-audit
-```
+Reusable workflows defined in `skills/` and executed through `SkillTool`. Users can add custom skills.

-Inspect mirrored command/tool inventories:
+### Plugin Architecture

-```bash
-python3 -m src.main commands --limit 10
-python3 -m src.main tools --limit 10
-```
+Built-in and third-party plugins are loaded through the `plugins/` subsystem.

-## Current Parity Checkpoint
+---

-The port now mirrors the archived root-entry file surface, top-level subsystem names, and command/tool inventories much more closely than before. However, it is **not yet** a full runtime-equivalent replacement for the original TypeScript system; the Python tree still contains fewer executable runtime slices than the archived source.
+## Disclaimer

-## Related Essay
-
- [*Is legal the same as legitimate: AI reimplementation and the erosion of copyleft*](https://writings.hongminhee.org/2026/03/legal-vs-legitimate/)
-
-The essay is dated **March 9, 2026**, so it should be read as companion analysis that predates the **March 31, 2026** source exposure that motivated this rewrite direction.
-
-## Built with `oh-my-codex`
-
-The restructuring and documentation work on this repository was AI-assisted and orchestrated with Yeachan Heo's [oh-my-codex (OmX)](https://github.com/Yeachan-Heo/oh-my-codex), layered on top of Codex.
-
- **`$team` mode:** used for coordinated parallel review and architectural feedback
- **`$ralph` mode:** used for persistent execution, verification, and completion discipline
- **Codex-driven workflow:** used to turn the main `src/` tree into a Python-first porting workspace
-
-### OmX workflow screenshots
-
-![OmX workflow screenshot 1](assets/omx/omx-readme-review-1.png)
-
-*Ralph/team orchestration view while the README and essay context were being reviewed in terminal panes.*
-
-![OmX workflow screenshot 2](assets/omx/omx-readme-review-2.png)
-
-*Split-pane review and verification flow during the final README wording pass.*
-
-## Ownership / Affiliation Disclaimer
-
- This repository does **not** claim ownership of the original Claude Code source material.
- This repository is **not affiliated with, endorsed by, or maintained by Anthropic**.
+This repository archives source code that was leaked from Anthropic's npm registry on **2026-03-31**. All original source code is the property of [Anthropic](https://www.anthropic.com).
--- a/assets/clawd-hero.jpeg
+++ b/assets/clawd-hero.jpeg
--- a/assets/instructkr.png
+++ b/assets/instructkr.png
--- a/assets/star-history.png
+++ b/assets/star-history.png
--- a/assets/tweet-screenshot.png
+++ b/assets/tweet-screenshot.png
--- a/assets/wsj-feature.png
+++ b/assets/wsj-feature.png
--- a/rust/.gitignore
+++ b/rust/.gitignore
@@ -0,0 +1 @@
+target/
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -0,0 +1,32 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "commands"
+version = "0.1.0"
+
+[[package]]
+name = "compat-harness"
+version = "0.1.0"
+dependencies = [
+ "commands",
+ "runtime",
+ "tools",
+]
+
+[[package]]
+name = "runtime"
+version = "0.1.0"
+
+[[package]]
+name = "rusty-claude-cli"
+version = "0.1.0"
+dependencies = [
+ "compat-harness",
+ "runtime",
+]
+
+[[package]]
+name = "tools"
+version = "0.1.0"
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -0,0 +1,19 @@
+[workspace]
+members = ["crates/*"]
+resolver = "2"
+
+[workspace.package]
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+publish = false
+
+[workspace.lints.rust]
+unsafe_code = "forbid"
+
+[workspace.lints.clippy]
+all = "warn"
+pedantic = "warn"
+module_name_repetitions = "allow"
+missing_panics_doc = "allow"
+missing_errors_doc = "allow"
--- a/rust/README.md
+++ b/rust/README.md
@@ -0,0 +1,54 @@
+# Rust port foundation
+
+This directory contains the first compatibility-first Rust foundation for a drop-in Claude Code CLI replacement.
+
+## Current milestone
+
+This initial milestone focuses on **harness-first scaffolding**, not full feature parity:
+
+- a Cargo workspace aligned to major upstream seams
+- a placeholder CLI crate (`rusty-claude-cli`)
+- runtime, command, and tool registry skeleton crates
+- a `compat-harness` crate that reads the upstream TypeScript sources in `../src/`
+- tests that prove upstream manifests/bootstrap hints can be extracted from the leaked TypeScript codebase
+
+## Workspace layout
+
+```text
+rust/
+├── Cargo.toml
+├── README.md
+├── crates/
+│   ├── rusty-claude-cli/
+│   ├── runtime/
+│   ├── commands/
+│   ├── tools/
+│   └── compat-harness/
+└── tests/
+```
+
+## How to use
+
+From this directory:
+
+```bash
+cargo fmt --all
+cargo check --workspace
+cargo test --workspace
+cargo run -p rusty-claude-cli -- --help
+cargo run -p rusty-claude-cli -- dump-manifests
+cargo run -p rusty-claude-cli -- bootstrap-plan
+```
+
+## Design notes
+
+The shape follows the PRD's harness-first recommendation:
+
+1. Extract observable upstream command/tool/bootstrap facts first.
+2. Keep Rust module boundaries recognizable.
+3. Grow runtime compatibility behind proof artifacts.
+4. Document explicit gaps instead of implying drop-in parity too early.
+
+## Relationship to the root README
+
+The repository root README explains the leaked TypeScript codebase. This document tracks the Rust replacement effort that lives in `rust/`.
--- a/rust/crates/commands/Cargo.toml
+++ b/rust/crates/commands/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "commands"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[lints]
+workspace = true
--- a/rust/crates/commands/src/lib.rs
+++ b/rust/crates/commands/src/lib.rs
@@ -0,0 +1,29 @@
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct CommandManifestEntry {
+    pub name: String,
+    pub source: CommandSource,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum CommandSource {
+    Builtin,
+    InternalOnly,
+    FeatureGated,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq)]
+pub struct CommandRegistry {
+    entries: Vec<CommandManifestEntry>,
+}
+
+impl CommandRegistry {
+    #[must_use]
+    pub fn new(entries: Vec<CommandManifestEntry>) -> Self {
+        Self { entries }
+    }
+
+    #[must_use]
+    pub fn entries(&self) -> &[CommandManifestEntry] {
+        &self.entries
+    }
+}
--- a/rust/crates/compat-harness/Cargo.toml
+++ b/rust/crates/compat-harness/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "compat-harness"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[dependencies]
+commands = { path = "../commands" }
+tools = { path = "../tools" }
+runtime = { path = "../runtime" }
+
+[lints]
+workspace = true
--- a/rust/crates/compat-harness/src/lib.rs
+++ b/rust/crates/compat-harness/src/lib.rs
@@ -0,0 +1,308 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use commands::{CommandManifestEntry, CommandRegistry, CommandSource};
+use runtime::{BootstrapPhase, BootstrapPlan};
+use tools::{ToolManifestEntry, ToolRegistry, ToolSource};
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct UpstreamPaths {
+    repo_root: PathBuf,
+}
+
+impl UpstreamPaths {
+    #[must_use]
+    pub fn from_repo_root(repo_root: impl Into<PathBuf>) -> Self {
+        Self {
+            repo_root: repo_root.into(),
+        }
+    }
+
+    #[must_use]
+    pub fn from_workspace_dir(workspace_dir: impl AsRef<Path>) -> Self {
+        let workspace_dir = workspace_dir
+            .as_ref()
+            .canonicalize()
+            .unwrap_or_else(|_| workspace_dir.as_ref().to_path_buf());
+        let repo_root = workspace_dir
+            .parent()
+            .map_or_else(|| PathBuf::from(".."), Path::to_path_buf);
+        Self { repo_root }
+    }
+
+    #[must_use]
+    pub fn commands_path(&self) -> PathBuf {
+        self.repo_root.join("src/commands.ts")
+    }
+
+    #[must_use]
+    pub fn tools_path(&self) -> PathBuf {
+        self.repo_root.join("src/tools.ts")
+    }
+
+    #[must_use]
+    pub fn cli_path(&self) -> PathBuf {
+        self.repo_root.join("src/entrypoints/cli.tsx")
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ExtractedManifest {
+    pub commands: CommandRegistry,
+    pub tools: ToolRegistry,
+    pub bootstrap: BootstrapPlan,
+}
+
+pub fn extract_manifest(paths: &UpstreamPaths) -> std::io::Result<ExtractedManifest> {
+    let commands_source = fs::read_to_string(paths.commands_path())?;
+    let tools_source = fs::read_to_string(paths.tools_path())?;
+    let cli_source = fs::read_to_string(paths.cli_path())?;
+
+    Ok(ExtractedManifest {
+        commands: extract_commands(&commands_source),
+        tools: extract_tools(&tools_source),
+        bootstrap: extract_bootstrap_plan(&cli_source),
+    })
+}
+
+#[must_use]
+pub fn extract_commands(source: &str) -> CommandRegistry {
+    let mut entries = Vec::new();
+    let mut in_internal_block = false;
+
+    for raw_line in source.lines() {
+        let line = raw_line.trim();
+
+        if line.starts_with("export const INTERNAL_ONLY_COMMANDS = [") {
+            in_internal_block = true;
+            continue;
+        }
+
+        if in_internal_block {
+            if line.starts_with(']') {
+                in_internal_block = false;
+                continue;
+            }
+            if let Some(name) = first_identifier(line) {
+                entries.push(CommandManifestEntry {
+                    name,
+                    source: CommandSource::InternalOnly,
+                });
+            }
+            continue;
+        }
+
+        if line.starts_with("import ") {
+            for imported in imported_symbols(line) {
+                entries.push(CommandManifestEntry {
+                    name: imported,
+                    source: CommandSource::Builtin,
+                });
+            }
+        }
+
+        if line.contains("feature('") && line.contains("./commands/") {
+            if let Some(name) = first_assignment_identifier(line) {
+                entries.push(CommandManifestEntry {
+                    name,
+                    source: CommandSource::FeatureGated,
+                });
+            }
+        }
+    }
+
+    dedupe_commands(entries)
+}
+
+#[must_use]
+pub fn extract_tools(source: &str) -> ToolRegistry {
+    let mut entries = Vec::new();
+
+    for raw_line in source.lines() {
+        let line = raw_line.trim();
+        if line.starts_with("import ") && line.contains("./tools/") {
+            for imported in imported_symbols(line) {
+                if imported.ends_with("Tool") {
+                    entries.push(ToolManifestEntry {
+                        name: imported,
+                        source: ToolSource::Base,
+                    });
+                }
+            }
+        }
+
+        if line.contains("feature('") && line.contains("Tool") {
+            if let Some(name) = first_assignment_identifier(line) {
+                if name.ends_with("Tool") || name.ends_with("Tools") {
+                    entries.push(ToolManifestEntry {
+                        name,
+                        source: ToolSource::Conditional,
+                    });
+                }
+            }
+        }
+    }
+
+    dedupe_tools(entries)
+}
+
+#[must_use]
+pub fn extract_bootstrap_plan(source: &str) -> BootstrapPlan {
+    let mut phases = vec![BootstrapPhase::CliEntry];
+
+    if source.contains("--version") {
+        phases.push(BootstrapPhase::FastPathVersion);
+    }
+    if source.contains("startupProfiler") {
+        phases.push(BootstrapPhase::StartupProfiler);
+    }
+    if source.contains("--dump-system-prompt") {
+        phases.push(BootstrapPhase::SystemPromptFastPath);
+    }
+    if source.contains("--claude-in-chrome-mcp") {
+        phases.push(BootstrapPhase::ChromeMcpFastPath);
+    }
+    if source.contains("--daemon-worker") {
+        phases.push(BootstrapPhase::DaemonWorkerFastPath);
+    }
+    if source.contains("remote-control") {
+        phases.push(BootstrapPhase::BridgeFastPath);
+    }
+    if source.contains("args[0] === 'daemon'") {
+        phases.push(BootstrapPhase::DaemonFastPath);
+    }
+    if source.contains("args[0] === 'ps'") || source.contains("args.includes('--bg')") {
+        phases.push(BootstrapPhase::BackgroundSessionFastPath);
+    }
+    if source.contains("args[0] === 'new' || args[0] === 'list' || args[0] === 'reply'") {
+        phases.push(BootstrapPhase::TemplateFastPath);
+    }
+    if source.contains("environment-runner") {
+        phases.push(BootstrapPhase::EnvironmentRunnerFastPath);
+    }
+    phases.push(BootstrapPhase::MainRuntime);
+
+    BootstrapPlan::from_phases(phases)
+}
+
+fn imported_symbols(line: &str) -> Vec<String> {
+    let Some(after_import) = line.strip_prefix("import ") else {
+        return Vec::new();
+    };
+
+    let before_from = after_import
+        .split(" from ")
+        .next()
+        .unwrap_or_default()
+        .trim();
+    if before_from.starts_with('{') {
+        return before_from
+            .trim_matches(|c| c == '{' || c == '}')
+            .split(',')
+            .filter_map(|part| {
+                let trimmed = part.trim();
+                if trimmed.is_empty() {
+                    return None;
+                }
+                Some(trimmed.split_whitespace().next()?.to_string())
+            })
+            .collect();
+    }
+
+    let first = before_from.split(',').next().unwrap_or_default().trim();
+    if first.is_empty() {
+        Vec::new()
+    } else {
+        vec![first.to_string()]
+    }
+}
+
+fn first_assignment_identifier(line: &str) -> Option<String> {
+    let trimmed = line.trim_start();
+    let candidate = trimmed.split('=').next()?.trim();
+    first_identifier(candidate)
+}
+
+fn first_identifier(line: &str) -> Option<String> {
+    let mut out = String::new();
+    for ch in line.chars() {
+        if ch.is_ascii_alphanumeric() || ch == '_' || ch == '-' {
+            out.push(ch);
+        } else if !out.is_empty() {
+            break;
+        }
+    }
+    (!out.is_empty()).then_some(out)
+}
+
+fn dedupe_commands(entries: Vec<CommandManifestEntry>) -> CommandRegistry {
+    let mut deduped = Vec::new();
+    for entry in entries {
+        let exists = deduped.iter().any(|seen: &CommandManifestEntry| {
+            seen.name == entry.name && seen.source == entry.source
+        });
+        if !exists {
+            deduped.push(entry);
+        }
+    }
+    CommandRegistry::new(deduped)
+}
+
+fn dedupe_tools(entries: Vec<ToolManifestEntry>) -> ToolRegistry {
+    let mut deduped = Vec::new();
+    for entry in entries {
+        let exists = deduped
+            .iter()
+            .any(|seen: &ToolManifestEntry| seen.name == entry.name && seen.source == entry.source);
+        if !exists {
+            deduped.push(entry);
+        }
+    }
+    ToolRegistry::new(deduped)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn fixture_paths() -> UpstreamPaths {
+        let workspace_dir = Path::new(env!("CARGO_MANIFEST_DIR")).join("../..");
+        UpstreamPaths::from_workspace_dir(workspace_dir)
+    }
+
+    #[test]
+    fn extracts_non_empty_manifests_from_upstream_repo() {
+        let manifest = extract_manifest(&fixture_paths()).expect("manifest should load");
+        assert!(!manifest.commands.entries().is_empty());
+        assert!(!manifest.tools.entries().is_empty());
+        assert!(!manifest.bootstrap.phases().is_empty());
+    }
+
+    #[test]
+    fn detects_known_upstream_command_symbols() {
+        let commands = extract_commands(
+            &fs::read_to_string(fixture_paths().commands_path()).expect("commands.ts"),
+        );
+        let names: Vec<_> = commands
+            .entries()
+            .iter()
+            .map(|entry| entry.name.as_str())
+            .collect();
+        assert!(names.contains(&"addDir"));
+        assert!(names.contains(&"review"));
+        assert!(!names.contains(&"INTERNAL_ONLY_COMMANDS"));
+    }
+
+    #[test]
+    fn detects_known_upstream_tool_symbols() {
+        let tools =
+            extract_tools(&fs::read_to_string(fixture_paths().tools_path()).expect("tools.ts"));
+        let names: Vec<_> = tools
+            .entries()
+            .iter()
+            .map(|entry| entry.name.as_str())
+            .collect();
+        assert!(names.contains(&"AgentTool"));
+        assert!(names.contains(&"BashTool"));
+    }
+}
--- a/rust/crates/runtime/Cargo.toml
+++ b/rust/crates/runtime/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "runtime"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[lints]
+workspace = true
--- a/rust/crates/runtime/src/lib.rs
+++ b/rust/crates/runtime/src/lib.rs
@@ -0,0 +1,56 @@
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BootstrapPhase {
+    CliEntry,
+    FastPathVersion,
+    StartupProfiler,
+    SystemPromptFastPath,
+    ChromeMcpFastPath,
+    DaemonWorkerFastPath,
+    BridgeFastPath,
+    DaemonFastPath,
+    BackgroundSessionFastPath,
+    TemplateFastPath,
+    EnvironmentRunnerFastPath,
+    MainRuntime,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct BootstrapPlan {
+    phases: Vec<BootstrapPhase>,
+}
+
+impl BootstrapPlan {
+    #[must_use]
+    pub fn claude_code_default() -> Self {
+        Self::from_phases(vec![
+            BootstrapPhase::CliEntry,
+            BootstrapPhase::FastPathVersion,
+            BootstrapPhase::StartupProfiler,
+            BootstrapPhase::SystemPromptFastPath,
+            BootstrapPhase::ChromeMcpFastPath,
+            BootstrapPhase::DaemonWorkerFastPath,
+            BootstrapPhase::BridgeFastPath,
+            BootstrapPhase::DaemonFastPath,
+            BootstrapPhase::BackgroundSessionFastPath,
+            BootstrapPhase::TemplateFastPath,
+            BootstrapPhase::EnvironmentRunnerFastPath,
+            BootstrapPhase::MainRuntime,
+        ])
+    }
+
+    #[must_use]
+    pub fn from_phases(phases: Vec<BootstrapPhase>) -> Self {
+        let mut deduped = Vec::new();
+        for phase in phases {
+            if !deduped.contains(&phase) {
+                deduped.push(phase);
+            }
+        }
+        Self { phases: deduped }
+    }
+
+    #[must_use]
+    pub fn phases(&self) -> &[BootstrapPhase] {
+        &self.phases
+    }
+}
--- a/rust/crates/rusty-claude-cli/Cargo.toml
+++ b/rust/crates/rusty-claude-cli/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "rusty-claude-cli"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[dependencies]
+compat-harness = { path = "../compat-harness" }
+runtime = { path = "../runtime" }
+
+[lints]
+workspace = true
--- a/rust/crates/rusty-claude-cli/src/main.rs
+++ b/rust/crates/rusty-claude-cli/src/main.rs
@@ -0,0 +1,54 @@
+use std::env;
+use std::path::PathBuf;
+
+use compat_harness::{extract_manifest, UpstreamPaths};
+use runtime::BootstrapPlan;
+
+fn main() {
+    let args: Vec<String> = env::args().skip(1).collect();
+
+    match args.first().map(String::as_str) {
+        Some("dump-manifests") => dump_manifests(),
+        Some("bootstrap-plan") => print_bootstrap_plan(),
+        Some("--help") | Some("-h") => print_help(),
+        Some(other) => {
+            eprintln!("unknown subcommand: {other}");
+            print_help();
+            std::process::exit(2);
+        }
+        None => {
+            println!("rusty-claude-cli: Rust compatibility foundation only.");
+            println!("Run `rusty-claude-cli --help` for the current scaffold commands.");
+        }
+    }
+}
+
+fn dump_manifests() {
+    let workspace_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("../..");
+    let paths = UpstreamPaths::from_workspace_dir(&workspace_dir);
+    match extract_manifest(&paths) {
+        Ok(manifest) => {
+            println!("commands: {}", manifest.commands.entries().len());
+            println!("tools: {}", manifest.tools.entries().len());
+            println!("bootstrap phases: {}", manifest.bootstrap.phases().len());
+        }
+        Err(error) => {
+            eprintln!("failed to extract manifests: {error}");
+            std::process::exit(1);
+        }
+    }
+}
+
+fn print_bootstrap_plan() {
+    for phase in BootstrapPlan::claude_code_default().phases() {
+        println!("- {phase:?}");
+    }
+}
+
+fn print_help() {
+    println!("rusty-claude-cli");
+    println!();
+    println!("Current scaffold commands:");
+    println!("  dump-manifests   Read upstream TS sources and print extracted counts");
+    println!("  bootstrap-plan   Print the current bootstrap phase skeleton");
+}
--- a/rust/crates/tools/Cargo.toml
+++ b/rust/crates/tools/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "tools"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[lints]
+workspace = true
--- a/rust/crates/tools/src/lib.rs
+++ b/rust/crates/tools/src/lib.rs
@@ -0,0 +1,28 @@
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ToolManifestEntry {
+    pub name: String,
+    pub source: ToolSource,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ToolSource {
+    Base,
+    Conditional,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Eq)]
+pub struct ToolRegistry {
+    entries: Vec<ToolManifestEntry>,
+}
+
+impl ToolRegistry {
+    #[must_use]
+    pub fn new(entries: Vec<ToolManifestEntry>) -> Self {
+        Self { entries }
+    }
+
+    #[must_use]
+    pub fn entries(&self) -> &[ToolManifestEntry] {
+        &self.entries
+    }
+}
--- a/src/QueryEngine.ts
+++ b/src/QueryEngine.ts
--- a/src/Task.ts
+++ b/src/Task.ts
@@ -0,0 +1,125 @@
+import { randomBytes } from 'crypto'
+import type { AppState } from './state/AppState.js'
+import type { AgentId } from './types/ids.js'
+import { getTaskOutputPath } from './utils/task/diskOutput.js'
+
+export type TaskType =
+  | 'local_bash'
+  | 'local_agent'
+  | 'remote_agent'
+  | 'in_process_teammate'
+  | 'local_workflow'
+  | 'monitor_mcp'
+  | 'dream'
+
+export type TaskStatus =
+  | 'pending'
+  | 'running'
+  | 'completed'
+  | 'failed'
+  | 'killed'
+
+/**
+ * True when a task is in a terminal state and will not transition further.
+ * Used to guard against injecting messages into dead teammates, evicting
+ * finished tasks from AppState, and orphan-cleanup paths.
+ */
+export function isTerminalTaskStatus(status: TaskStatus): boolean {
+  return status === 'completed' || status === 'failed' || status === 'killed'
+}
+
+export type TaskHandle = {
+  taskId: string
+  cleanup?: () => void
+}
+
+export type SetAppState = (f: (prev: AppState) => AppState) => void
+
+export type TaskContext = {
+  abortController: AbortController
+  getAppState: () => AppState
+  setAppState: SetAppState
+}
+
+// Base fields shared by all task states
+export type TaskStateBase = {
+  id: string
+  type: TaskType
+  status: TaskStatus
+  description: string
+  toolUseId?: string
+  startTime: number
+  endTime?: number
+  totalPausedMs?: number
+  outputFile: string
+  outputOffset: number
+  notified: boolean
+}
+
+export type LocalShellSpawnInput = {
+  command: string
+  description: string
+  timeout?: number
+  toolUseId?: string
+  agentId?: AgentId
+  /** UI display variant: description-as-label, dialog title, status bar pill. */
+  kind?: 'bash' | 'monitor'
+}
+
+// What getTaskByType dispatches for: kill. spawn/render were never
+// called polymorphically (removed in #22546). All six kill implementations
+// use only setAppState — getAppState/abortController were dead weight.
+export type Task = {
+  name: string
+  type: TaskType
+  kill(taskId: string, setAppState: SetAppState): Promise<void>
+}
+
+// Task ID prefixes
+const TASK_ID_PREFIXES: Record<string, string> = {
+  local_bash: 'b', // Keep as 'b' for backward compatibility
+  local_agent: 'a',
+  remote_agent: 'r',
+  in_process_teammate: 't',
+  local_workflow: 'w',
+  monitor_mcp: 'm',
+  dream: 'd',
+}
+
+// Get task ID prefix
+function getTaskIdPrefix(type: TaskType): string {
+  return TASK_ID_PREFIXES[type] ?? 'x'
+}
+
+// Case-insensitive-safe alphabet (digits + lowercase) for task IDs.
+// 36^8 ≈ 2.8 trillion combinations, sufficient to resist brute-force symlink attacks.
+const TASK_ID_ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyz'
+
+export function generateTaskId(type: TaskType): string {
+  const prefix = getTaskIdPrefix(type)
+  const bytes = randomBytes(8)
+  let id = prefix
+  for (let i = 0; i < 8; i++) {
+    id += TASK_ID_ALPHABET[bytes[i]! % TASK_ID_ALPHABET.length]
+  }
+  return id
+}
+
+export function createTaskStateBase(
+  id: string,
+  type: TaskType,
+  description: string,
+  toolUseId?: string,
+): TaskStateBase {
+  return {
+    id,
+    type,
+    status: 'pending',
+    description,
+    toolUseId,
+    startTime: Date.now(),
+    outputFile: getTaskOutputPath(id),
+    outputOffset: 0,
+    notified: false,
+  }
+}
--- a/src/Tool.ts
+++ b/src/Tool.ts
@@ -0,0 +1,792 @@
+import type {
+  ToolResultBlockParam,
+  ToolUseBlockParam,
+} from '@anthropic-ai/sdk/resources/index.mjs'
+import type {
+  ElicitRequestURLParams,
+  ElicitResult,
+} from '@modelcontextprotocol/sdk/types.js'
+import type { UUID } from 'crypto'
+import type { z } from 'zod/v4'
+import type { Command } from './commands.js'
+import type { CanUseToolFn } from './hooks/useCanUseTool.js'
+import type { ThinkingConfig } from './utils/thinking.js'
+
+export type ToolInputJSONSchema = {
+  [x: string]: unknown
+  type: 'object'
+  properties?: {
+    [x: string]: unknown
+  }
+}
+
+import type { Notification } from './context/notifications.js'
+import type {
+  MCPServerConnection,
+  ServerResource,
+} from './services/mcp/types.js'
+import type {
+  AgentDefinition,
+  AgentDefinitionsResult,
+} from './tools/AgentTool/loadAgentsDir.js'
+import type {
+  AssistantMessage,
+  AttachmentMessage,
+  Message,
+  ProgressMessage,
+  SystemLocalCommandMessage,
+  SystemMessage,
+  UserMessage,
+} from './types/message.js'
+// Import permission types from centralized location to break import cycles
+// Import PermissionResult from centralized location to break import cycles
+import type {
+  AdditionalWorkingDirectory,
+  PermissionMode,
+  PermissionResult,
+} from './types/permissions.js'
+// Import tool progress types from centralized location to break import cycles
+import type {
+  AgentToolProgress,
+  BashProgress,
+  MCPProgress,
+  REPLToolProgress,
+  SkillToolProgress,
+  TaskOutputProgress,
+  ToolProgressData,
+  WebSearchProgress,
+} from './types/tools.js'
+import type { FileStateCache } from './utils/fileStateCache.js'
+import type { DenialTrackingState } from './utils/permissions/denialTracking.js'
+import type { SystemPrompt } from './utils/systemPromptType.js'
+import type { ContentReplacementState } from './utils/toolResultStorage.js'
+
+// Re-export progress types for backwards compatibility
+export type {
+  AgentToolProgress,
+  BashProgress,
+  MCPProgress,
+  REPLToolProgress,
+  SkillToolProgress,
+  TaskOutputProgress,
+  WebSearchProgress,
+}
+
+import type { SpinnerMode } from './components/Spinner.js'
+import type { QuerySource } from './constants/querySource.js'
+import type { SDKStatus } from './entrypoints/agentSdkTypes.js'
+import type { AppState } from './state/AppState.js'
+import type {
+  HookProgress,
+  PromptRequest,
+  PromptResponse,
+} from './types/hooks.js'
+import type { AgentId } from './types/ids.js'
+import type { DeepImmutable } from './types/utils.js'
+import type { AttributionState } from './utils/commitAttribution.js'
+import type { FileHistoryState } from './utils/fileHistory.js'
+import type { Theme, ThemeName } from './utils/theme.js'
+
+export type QueryChainTracking = {
+  chainId: string
+  depth: number
+}
+
+export type ValidationResult =
+  | { result: true }
+  | {
+      result: false
+      message: string
+      errorCode: number
+    }
+
+export type SetToolJSXFn = (
+  args: {
+    jsx: React.ReactNode | null
+    shouldHidePromptInput: boolean
+    shouldContinueAnimation?: true
+    showSpinner?: boolean
+    isLocalJSXCommand?: boolean
+    isImmediate?: boolean
+    /** Set to true to clear a local JSX command (e.g., from its onDone callback) */
+    clearLocalJSX?: boolean
+  } | null,
+) => void
+
+// Import tool permission types from centralized location to break import cycles
+import type { ToolPermissionRulesBySource } from './types/permissions.js'
+
+// Re-export for backwards compatibility
+export type { ToolPermissionRulesBySource }
+
+// Apply DeepImmutable to the imported type
+export type ToolPermissionContext = DeepImmutable<{
+  mode: PermissionMode
+  additionalWorkingDirectories: Map<string, AdditionalWorkingDirectory>
+  alwaysAllowRules: ToolPermissionRulesBySource
+  alwaysDenyRules: ToolPermissionRulesBySource
+  alwaysAskRules: ToolPermissionRulesBySource
+  isBypassPermissionsModeAvailable: boolean
+  isAutoModeAvailable?: boolean
+  strippedDangerousRules?: ToolPermissionRulesBySource
+  /** When true, permission prompts are auto-denied (e.g., background agents that can't show UI) */
+  shouldAvoidPermissionPrompts?: boolean
+  /** When true, automated checks (classifier, hooks) are awaited before showing the permission dialog (coordinator workers) */
+  awaitAutomatedChecksBeforeDialog?: boolean
+  /** Stores the permission mode before model-initiated plan mode entry, so it can be restored on exit */
+  prePlanMode?: PermissionMode
+}>
+
+export const getEmptyToolPermissionContext: () => ToolPermissionContext =
+  () => ({
+    mode: 'default',
+    additionalWorkingDirectories: new Map(),
+    alwaysAllowRules: {},
+    alwaysDenyRules: {},
+    alwaysAskRules: {},
+    isBypassPermissionsModeAvailable: false,
+  })
+
+export type CompactProgressEvent =
+  | {
+      type: 'hooks_start'
+      hookType: 'pre_compact' | 'post_compact' | 'session_start'
+    }
+  | { type: 'compact_start' }
+  | { type: 'compact_end' }
+
+export type ToolUseContext = {
+  options: {
+    commands: Command[]
+    debug: boolean
+    mainLoopModel: string
+    tools: Tools
+    verbose: boolean
+    thinkingConfig: ThinkingConfig
+    mcpClients: MCPServerConnection[]
+    mcpResources: Record<string, ServerResource[]>
+    isNonInteractiveSession: boolean
+    agentDefinitions: AgentDefinitionsResult
+    maxBudgetUsd?: number
+    /** Custom system prompt that replaces the default system prompt */
+    customSystemPrompt?: string
+    /** Additional system prompt appended after the main system prompt */
+    appendSystemPrompt?: string
+    /** Override querySource for analytics tracking */
+    querySource?: QuerySource
+    /** Optional callback to get the latest tools (e.g., after MCP servers connect mid-query) */
+    refreshTools?: () => Tools
+  }
+  abortController: AbortController
+  readFileState: FileStateCache
+  getAppState(): AppState
+  setAppState(f: (prev: AppState) => AppState): void
+  /**
+   * Always-shared setAppState for session-scoped infrastructure (background
+   * tasks, session hooks). Unlike setAppState, which is no-op for async agents
+   * (see createSubagentContext), this always reaches the root store so agents
+   * at any nesting depth can register/clean up infrastructure that outlives
+   * a single turn. Only set by createSubagentContext; main-thread contexts
+   * fall back to setAppState.
+   */
+  setAppStateForTasks?: (f: (prev: AppState) => AppState) => void
+  /**
+   * Optional handler for URL elicitations triggered by tool call errors (-32042).
+   * In print/SDK mode, this delegates to structuredIO.handleElicitation.
+   * In REPL mode, this is undefined and the queue-based UI path is used.
+   */
+  handleElicitation?: (
+    serverName: string,
+    params: ElicitRequestURLParams,
+    signal: AbortSignal,
+  ) => Promise<ElicitResult>
+  setToolJSX?: SetToolJSXFn
+  addNotification?: (notif: Notification) => void
+  /** Append a UI-only system message to the REPL message list. Stripped at the
+   *  normalizeMessagesForAPI boundary — the Exclude<> makes that type-enforced. */
+  appendSystemMessage?: (
+    msg: Exclude<SystemMessage, SystemLocalCommandMessage>,
+  ) => void
+  /** Send an OS-level notification (iTerm2, Kitty, Ghostty, bell, etc.) */
+  sendOSNotification?: (opts: {
+    message: string
+    notificationType: string
+  }) => void
+  nestedMemoryAttachmentTriggers?: Set<string>
+  /**
+   * CLAUDE.md paths already injected as nested_memory attachments this
+   * session. Dedup for memoryFilesToAttachments — readFileState is an LRU
+   * that evicts entries in busy sessions, so its .has() check alone can
+   * re-inject the same CLAUDE.md dozens of times.
+   */
+  loadedNestedMemoryPaths?: Set<string>
+  dynamicSkillDirTriggers?: Set<string>
+  /** Skill names surfaced via skill_discovery this session. Telemetry only (feeds was_discovered). */
+  discoveredSkillNames?: Set<string>
+  userModified?: boolean
+  setInProgressToolUseIDs: (f: (prev: Set<string>) => Set<string>) => void
+  /** Only wired in interactive (REPL) contexts; SDK/QueryEngine don't set this. */
+  setHasInterruptibleToolInProgress?: (v: boolean) => void
+  setResponseLength: (f: (prev: number) => number) => void
+  /** Ant-only: push a new API metrics entry for OTPS tracking.
+   *  Called by subagent streaming when a new API request starts. */
+  pushApiMetricsEntry?: (ttftMs: number) => void
+  setStreamMode?: (mode: SpinnerMode) => void
+  onCompactProgress?: (event: CompactProgressEvent) => void
+  setSDKStatus?: (status: SDKStatus) => void
+  openMessageSelector?: () => void
+  updateFileHistoryState: (
+    updater: (prev: FileHistoryState) => FileHistoryState,
+  ) => void
+  updateAttributionState: (
+    updater: (prev: AttributionState) => AttributionState,
+  ) => void
+  setConversationId?: (id: UUID) => void
+  agentId?: AgentId // Only set for subagents; use getSessionId() for session ID. Hooks use this to distinguish subagent calls.
+  agentType?: string // Subagent type name. For the main thread's --agent type, hooks fall back to getMainThreadAgentType().
+  /** When true, canUseTool must always be called even when hooks auto-approve.
+   *  Used by speculation for overlay file path rewriting. */
+  requireCanUseTool?: boolean
+  messages: Message[]
+  fileReadingLimits?: {
+    maxTokens?: number
+    maxSizeBytes?: number
+  }
+  globLimits?: {
+    maxResults?: number
+  }
+  toolDecisions?: Map<
+    string,
+    {
+      source: string
+      decision: 'accept' | 'reject'
+      timestamp: number
+    }
+  >
+  queryTracking?: QueryChainTracking
+  /** Callback factory for requesting interactive prompts from the user.
+   * Returns a prompt callback bound to the given source name.
+   * Only available in interactive (REPL) contexts. */
+  requestPrompt?: (
+    sourceName: string,
+    toolInputSummary?: string | null,
+  ) => (request: PromptRequest) => Promise<PromptResponse>
+  toolUseId?: string
+  criticalSystemReminder_EXPERIMENTAL?: string
+  /** When true, preserve toolUseResult on messages even for subagents.
+   * Used by in-process teammates whose transcripts are viewable by the user. */
+  preserveToolUseResults?: boolean
+  /** Local denial tracking state for async subagents whose setAppState is a
+   *  no-op. Without this, the denial counter never accumulates and the
+   *  fallback-to-prompting threshold is never reached. Mutable — the
+   *  permissions code updates it in place. */
+  localDenialTracking?: DenialTrackingState
+  /**
+   * Per-conversation-thread content replacement state for the tool result
+   * budget. When present, query.ts applies the aggregate tool result budget.
+   * Main thread: REPL provisions once (never resets — stale UUID keys
+   * are inert). Subagents: createSubagentContext clones the parent's state
+   * by default (cache-sharing forks need identical decisions), or
+   * resumeAgentBackground threads one reconstructed from sidechain records.
+   */
+  contentReplacementState?: ContentReplacementState
+  /**
+   * Parent's rendered system prompt bytes, frozen at turn start.
+   * Used by fork subagents to share the parent's prompt cache — re-calling
+   * getSystemPrompt() at fork-spawn time can diverge (GrowthBook cold→warm)
+   * and bust the cache. See forkSubagent.ts.
+   */
+  renderedSystemPrompt?: SystemPrompt
+}
+
+// Re-export ToolProgressData from centralized location
+export type { ToolProgressData }
+
+export type Progress = ToolProgressData | HookProgress
+
+export type ToolProgress<P extends ToolProgressData> = {
+  toolUseID: string
+  data: P
+}
+
+export function filterToolProgressMessages(
+  progressMessagesForMessage: ProgressMessage[],
+): ProgressMessage<ToolProgressData>[] {
+  return progressMessagesForMessage.filter(
+    (msg): msg is ProgressMessage<ToolProgressData> =>
+      msg.data?.type !== 'hook_progress',
+  )
+}
+
+export type ToolResult<T> = {
+  data: T
+  newMessages?: (
+    | UserMessage
+    | AssistantMessage
+    | AttachmentMessage
+    | SystemMessage
+  )[]
+  // contextModifier is only honored for tools that aren't concurrency safe.
+  contextModifier?: (context: ToolUseContext) => ToolUseContext
+  /** MCP protocol metadata (structuredContent, _meta) to pass through to SDK consumers */
+  mcpMeta?: {
+    _meta?: Record<string, unknown>
+    structuredContent?: Record<string, unknown>
+  }
+}
+
+export type ToolCallProgress<P extends ToolProgressData = ToolProgressData> = (
+  progress: ToolProgress<P>,
+) => void
+
+// Type for any schema that outputs an object with string keys
+export type AnyObject = z.ZodType<{ [key: string]: unknown }>
+
+/**
+ * Checks if a tool matches the given name (primary name or alias).
+ */
+export function toolMatchesName(
+  tool: { name: string; aliases?: string[] },
+  name: string,
+): boolean {
+  return tool.name === name || (tool.aliases?.includes(name) ?? false)
+}
+
+/**
+ * Finds a tool by name or alias from a list of tools.
+ */
+export function findToolByName(tools: Tools, name: string): Tool | undefined {
+  return tools.find(t => toolMatchesName(t, name))
+}
+
+export type Tool<
+  Input extends AnyObject = AnyObject,
+  Output = unknown,
+  P extends ToolProgressData = ToolProgressData,
+> = {
+  /**
+   * Optional aliases for backwards compatibility when a tool is renamed.
+   * The tool can be looked up by any of these names in addition to its primary name.
+   */
+  aliases?: string[]
+  /**
+   * One-line capability phrase used by ToolSearch for keyword matching.
+   * Helps the model find this tool via keyword search when it's deferred.
+   * 3–10 words, no trailing period.
+   * Prefer terms not already in the tool name (e.g. 'jupyter' for NotebookEdit).
+   */
+  searchHint?: string
+  call(
+    args: z.infer<Input>,
+    context: ToolUseContext,
+    canUseTool: CanUseToolFn,
+    parentMessage: AssistantMessage,
+    onProgress?: ToolCallProgress<P>,
+  ): Promise<ToolResult<Output>>
+  description(
+    input: z.infer<Input>,
+    options: {
+      isNonInteractiveSession: boolean
+      toolPermissionContext: ToolPermissionContext
+      tools: Tools
+    },
+  ): Promise<string>
+  readonly inputSchema: Input
+  // Type for MCP tools that can specify their input schema directly in JSON Schema format
+  // rather than converting from Zod schema
+  readonly inputJSONSchema?: ToolInputJSONSchema
+  // Optional because TungstenTool doesn't define this. TODO: Make it required.
+  // When we do that, we can also go through and make this a bit more type-safe.
+  outputSchema?: z.ZodType<unknown>
+  inputsEquivalent?(a: z.infer<Input>, b: z.infer<Input>): boolean
+  isConcurrencySafe(input: z.infer<Input>): boolean
+  isEnabled(): boolean
+  isReadOnly(input: z.infer<Input>): boolean
+  /** Defaults to false. Only set when the tool performs irreversible operations (delete, overwrite, send). */
+  isDestructive?(input: z.infer<Input>): boolean
+  /**
+   * What should happen when the user submits a new message while this tool
+   * is running.
+   *
+   * - `'cancel'` — stop the tool and discard its result
+   * - `'block'`  — keep running; the new message waits
+   *
+   * Defaults to `'block'` when not implemented.
+   */
+  interruptBehavior?(): 'cancel' | 'block'
+  /**
+   * Returns information about whether this tool use is a search or read operation
+   * that should be collapsed into a condensed display in the UI. Examples include
+   * file searching (Grep, Glob), file reading (Read), and bash commands like find,
+   * grep, wc, etc.
+   *
+   * Returns an object indicating whether the operation is a search or read operation:
+   * - `isSearch: true` for search operations (grep, find, glob patterns)
+   * - `isRead: true` for read operations (cat, head, tail, file read)
+   * - `isList: true` for directory-listing operations (ls, tree, du)
+   * - All can be false if the operation shouldn't be collapsed
+   */
+  isSearchOrReadCommand?(input: z.infer<Input>): {
+    isSearch: boolean
+    isRead: boolean
+    isList?: boolean
+  }
+  isOpenWorld?(input: z.infer<Input>): boolean
+  requiresUserInteraction?(): boolean
+  isMcp?: boolean
+  isLsp?: boolean
+  /**
+   * When true, this tool is deferred (sent with defer_loading: true) and requires
+   * ToolSearch to be used before it can be called.
+   */
+  readonly shouldDefer?: boolean
+  /**
+   * When true, this tool is never deferred — its full schema appears in the
+   * initial prompt even when ToolSearch is enabled. For MCP tools, set via
+   * `_meta['anthropic/alwaysLoad']`. Use for tools the model must see on
+   * turn 1 without a ToolSearch round-trip.
+   */
+  readonly alwaysLoad?: boolean
+  /**
+   * For MCP tools: the server and tool names as received from the MCP server (unnormalized).
+   * Present on all MCP tools regardless of whether `name` is prefixed (mcp__server__tool)
+   * or unprefixed (CLAUDE_AGENT_SDK_MCP_NO_PREFIX mode).
+   */
+  mcpInfo?: { serverName: string; toolName: string }
+  readonly name: string
+  /**
+   * Maximum size in characters for tool result before it gets persisted to disk.
+   * When exceeded, the result is saved to a file and Claude receives a preview
+   * with the file path instead of the full content.
+   *
+   * Set to Infinity for tools whose output must never be persisted (e.g. Read,
+   * where persisting creates a circular Read→file→Read loop and the tool
+   * already self-bounds via its own limits).
+   */
+  maxResultSizeChars: number
+  /**
+   * When true, enables strict mode for this tool, which causes the API to
+   * more strictly adhere to tool instructions and parameter schemas.
+   * Only applied when the tengu_tool_pear is enabled.
+   */
+  readonly strict?: boolean
+
+  /**
+   * Called on copies of tool_use input before observers see it (SDK stream,
+   * transcript, canUseTool, PreToolUse/PostToolUse hooks). Mutate in place
+   * to add legacy/derived fields. Must be idempotent. The original API-bound
+   * input is never mutated (preserves prompt cache). Not re-applied when a
+   * hook/permission returns a fresh updatedInput — those own their shape.
+   */
+  backfillObservableInput?(input: Record<string, unknown>): void
+
+  /**
+   * Determines if this tool is allowed to run with this input in the current context.
+   * It informs the model of why the tool use failed, and does not directly display any UI.
+   * @param input
+   * @param context
+   */
+  validateInput?(
+    input: z.infer<Input>,
+    context: ToolUseContext,
+  ): Promise<ValidationResult>
+
+  /**
+   * Determines if the user is asked for permission. Only called after validateInput() passes.
+   * General permission logic is in permissions.ts. This method contains tool-specific logic.
+   * @param input
+   * @param context
+   */
+  checkPermissions(
+    input: z.infer<Input>,
+    context: ToolUseContext,
+  ): Promise<PermissionResult>
+
+  // Optional method for tools that operate on a file path
+  getPath?(input: z.infer<Input>): string
+
+  /**
+   * Prepare a matcher for hook `if` conditions (permission-rule patterns like
+   * "git *" from "Bash(git *)"). Called once per hook-input pair; any
+   * expensive parsing happens here. Returns a closure that is called per
+   * hook pattern. If not implemented, only tool-name-level matching works.
+   */
+  preparePermissionMatcher?(
+    input: z.infer<Input>,
+  ): Promise<(pattern: string) => boolean>
+
+  prompt(options: {
+    getToolPermissionContext: () => Promise<ToolPermissionContext>
+    tools: Tools
+    agents: AgentDefinition[]
+    allowedAgentTypes?: string[]
+  }): Promise<string>
+  userFacingName(input: Partial<z.infer<Input>> | undefined): string
+  userFacingNameBackgroundColor?(
+    input: Partial<z.infer<Input>> | undefined,
+  ): keyof Theme | undefined
+  /**
+   * Transparent wrappers (e.g. REPL) delegate all rendering to their progress
+   * handler, which emits native-looking blocks for each inner tool call.
+   * The wrapper itself shows nothing.
+   */
+  isTransparentWrapper?(): boolean
+  /**
+   * Returns a short string summary of this tool use for display in compact views.
+   * @param input The tool input
+   * @returns A short string summary, or null to not display
+   */
+  getToolUseSummary?(input: Partial<z.infer<Input>> | undefined): string | null
+  /**
+   * Returns a human-readable present-tense activity description for spinner display.
+   * Example: "Reading src/foo.ts", "Running bun test", "Searching for pattern"
+   * @param input The tool input
+   * @returns Activity description string, or null to fall back to tool name
+   */
+  getActivityDescription?(
+    input: Partial<z.infer<Input>> | undefined,
+  ): string | null
+  /**
+   * Returns a compact representation of this tool use for the auto-mode
+   * security classifier. Examples: `ls -la` for Bash, `/tmp/x: new content`
+   * for Edit. Return '' to skip this tool in the classifier transcript
+   * (e.g. tools with no security relevance). May return an object to avoid
+   * double-encoding when the caller JSON-wraps the value.
+   */
+  toAutoClassifierInput(input: z.infer<Input>): unknown
+  mapToolResultToToolResultBlockParam(
+    content: Output,
+    toolUseID: string,
+  ): ToolResultBlockParam
+  /**
+   * Optional. When omitted, the tool result renders nothing (same as returning
+   * null). Omit for tools whose results are surfaced elsewhere (e.g., TodoWrite
+   * updates the todo panel, not the transcript).
+   */
+  renderToolResultMessage?(
+    content: Output,
+    progressMessagesForMessage: ProgressMessage<P>[],
+    options: {
+      style?: 'condensed'
+      theme: ThemeName
+      tools: Tools
+      verbose: boolean
+      isTranscriptMode?: boolean
+      isBriefOnly?: boolean
+      /** Original tool_use input, when available. Useful for compact result
+       * summaries that reference what was requested (e.g. "Sent to #foo"). */
+      input?: unknown
+    },
+  ): React.ReactNode
+  /**
+   * Flattened text of what renderToolResultMessage shows IN TRANSCRIPT
+   * MODE (verbose=true, isTranscriptMode=true). For transcript search
+   * indexing: the index counts occurrences in this string, the highlight
+   * overlay scans the actual screen buffer. For count ≡ highlight, this
+   * must return the text that ends up visible — not the model-facing
+   * serialization from mapToolResultToToolResultBlockParam (which adds
+   * system-reminders, persisted-output wrappers).
+   *
+   * Chrome can be skipped (under-count is fine). "Found 3 files in 12ms"
+   * isn't worth indexing. Phantoms are not fine — text that's claimed
+   * here but doesn't render is a count≠highlight bug.
+   *
+   * Optional: omitted → field-name heuristic in transcriptSearch.ts.
+   * Drift caught by test/utils/transcriptSearch.renderFidelity.test.tsx
+   * which renders sample outputs and flags text that's indexed-but-not-
+   * rendered (phantom) or rendered-but-not-indexed (under-count warning).
+   */
+  extractSearchText?(out: Output): string
+  /**
+   * Render the tool use message. Note that `input` is partial because we render
+   * the message as soon as possible, possibly before tool parameters have fully
+   * streamed in.
+   */
+  renderToolUseMessage(
+    input: Partial<z.infer<Input>>,
+    options: { theme: ThemeName; verbose: boolean; commands?: Command[] },
+  ): React.ReactNode
+  /**
+   * Returns true when the non-verbose rendering of this output is truncated
+   * (i.e., clicking to expand would reveal more content). Gates
+   * click-to-expand in fullscreen — only messages where verbose actually
+   * shows more get a hover/click affordance. Unset means never truncated.
+   */
+  isResultTruncated?(output: Output): boolean
+  /**
+   * Renders an optional tag to display after the tool use message.
+   * Used for additional metadata like timeout, model, resume ID, etc.
+   * Returns null to not display anything.
+   */
+  renderToolUseTag?(input: Partial<z.infer<Input>>): React.ReactNode
+  /**
+   * Optional. When omitted, no progress UI is shown while the tool runs.
+   */
+  renderToolUseProgressMessage?(
+    progressMessagesForMessage: ProgressMessage<P>[],
+    options: {
+      tools: Tools
+      verbose: boolean
+      terminalSize?: { columns: number; rows: number }
+      inProgressToolCallCount?: number
+      isTranscriptMode?: boolean
+    },
+  ): React.ReactNode
+  renderToolUseQueuedMessage?(): React.ReactNode
+  /**
+   * Optional. When omitted, falls back to <FallbackToolUseRejectedMessage />.
+   * Only define this for tools that need custom rejection UI (e.g., file edits
+   * that show the rejected diff).
+   */
+  renderToolUseRejectedMessage?(
+    input: z.infer<Input>,
+    options: {
+      columns: number
+      messages: Message[]
+      style?: 'condensed'
+      theme: ThemeName
+      tools: Tools
+      verbose: boolean
+      progressMessagesForMessage: ProgressMessage<P>[]
+      isTranscriptMode?: boolean
+    },
+  ): React.ReactNode
+  /**
+   * Optional. When omitted, falls back to <FallbackToolUseErrorMessage />.
+   * Only define this for tools that need custom error UI (e.g., search tools
+   * that show "File not found" instead of the raw error).
+   */
+  renderToolUseErrorMessage?(
+    result: ToolResultBlockParam['content'],
+    options: {
+      progressMessagesForMessage: ProgressMessage<P>[]
+      tools: Tools
+      verbose: boolean
+      isTranscriptMode?: boolean
+    },
+  ): React.ReactNode
+
+  /**
+   * Renders multiple parallel instances of this tool as a group.
+   * @returns React node to render, or null to fall back to individual rendering
+   */
+  /**
+   * Renders multiple tool uses as a group (non-verbose mode only).
+   * In verbose mode, individual tool uses render at their original positions.
+   * @returns React node to render, or null to fall back to individual rendering
+   */
+  renderGroupedToolUse?(
+    toolUses: Array<{
+      param: ToolUseBlockParam
+      isResolved: boolean
+      isError: boolean
+      isInProgress: boolean
+      progressMessages: ProgressMessage<P>[]
+      result?: {
+        param: ToolResultBlockParam
+        output: unknown
+      }
+    }>,
+    options: {
+      shouldAnimate: boolean
+      tools: Tools
+    },
+  ): React.ReactNode | null
+}
+
+/**
+ * A collection of tools. Use this type instead of `Tool[]` to make it easier
+ * to track where tool sets are assembled, passed, and filtered across the codebase.
+ */
+export type Tools = readonly Tool[]
+
+/**
+ * Methods that `buildTool` supplies a default for. A `ToolDef` may omit these;
+ * the resulting `Tool` always has them.
+ */
+type DefaultableToolKeys =
+  | 'isEnabled'
+  | 'isConcurrencySafe'
+  | 'isReadOnly'
+  | 'isDestructive'
+  | 'checkPermissions'
+  | 'toAutoClassifierInput'
+  | 'userFacingName'
+
+/**
+ * Tool definition accepted by `buildTool`. Same shape as `Tool` but with the
+ * defaultable methods optional — `buildTool` fills them in so callers always
+ * see a complete `Tool`.
+ */
+export type ToolDef<
+  Input extends AnyObject = AnyObject,
+  Output = unknown,
+  P extends ToolProgressData = ToolProgressData,
+> = Omit<Tool<Input, Output, P>, DefaultableToolKeys> &
+  Partial<Pick<Tool<Input, Output, P>, DefaultableToolKeys>>
+
+/**
+ * Type-level spread mirroring `{ ...TOOL_DEFAULTS, ...def }`. For each
+ * defaultable key: if D provides it (required), D's type wins; if D omits
+ * it or has it optional (inherited from Partial<> in the constraint), the
+ * default fills in. All other keys come from D verbatim — preserving arity,
+ * optional presence, and literal types exactly as `satisfies Tool` did.
+ */
+type BuiltTool<D> = Omit<D, DefaultableToolKeys> & {
+  [K in DefaultableToolKeys]-?: K extends keyof D
+    ? undefined extends D[K]
+      ? ToolDefaults[K]
+      : D[K]
+    : ToolDefaults[K]
+}
+
+/**
+ * Build a complete `Tool` from a partial definition, filling in safe defaults
+ * for the commonly-stubbed methods. All tool exports should go through this so
+ * that defaults live in one place and callers never need `?.() ?? default`.
+ *
+ * Defaults (fail-closed where it matters):
+ * - `isEnabled` → `true`
+ * - `isConcurrencySafe` → `false` (assume not safe)
+ * - `isReadOnly` → `false` (assume writes)
+ * - `isDestructive` → `false`
+ * - `checkPermissions` → `{ behavior: 'allow', updatedInput }` (defer to general permission system)
+ * - `toAutoClassifierInput` → `''` (skip classifier — security-relevant tools must override)
+ * - `userFacingName` → `name`
+ */
+const TOOL_DEFAULTS = {
+  isEnabled: () => true,
+  isConcurrencySafe: (_input?: unknown) => false,
+  isReadOnly: (_input?: unknown) => false,
+  isDestructive: (_input?: unknown) => false,
+  checkPermissions: (
+    input: { [key: string]: unknown },
+    _ctx?: ToolUseContext,
+  ): Promise<PermissionResult> =>
+    Promise.resolve({ behavior: 'allow', updatedInput: input }),
+  toAutoClassifierInput: (_input?: unknown) => '',
+  userFacingName: (_input?: unknown) => '',
+}
+
+// The defaults type is the ACTUAL shape of TOOL_DEFAULTS (optional params so
+// both 0-arg and full-arg call sites type-check — stubs varied in arity and
+// tests relied on that), not the interface's strict signatures.
+type ToolDefaults = typeof TOOL_DEFAULTS
+
+// D infers the concrete object-literal type from the call site. The
+// constraint provides contextual typing for method parameters; `any` in
+// constraint position is structural and never leaks into the return type.
+// BuiltTool<D> mirrors runtime `{...TOOL_DEFAULTS, ...def}` at the type level.
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type AnyToolDef = ToolDef<any, any, any>
+
+export function buildTool<D extends AnyToolDef>(def: D): BuiltTool<D> {
+  // The runtime spread is straightforward; the `as` bridges the gap between
+  // the structural-any constraint and the precise BuiltTool<D> return. The
+  // type semantics are proven by the 0-error typecheck across all 60+ tools.
+  return {
+    ...TOOL_DEFAULTS,
+    userFacingName: () => def.name,
+    ...def,
+  } as BuiltTool<D>
+}
--- a/src/init.py
+++ b/src/init.py
@@ -3,17 +3,27 @@
 from .commands import PORTED_COMMANDS, build_command_backlog
 from .parity_audit import ParityAuditResult, run_parity_audit
 from .port_manifest import PortManifest, build_port_manifest
-from .query_engine import QueryEnginePort
+from .query_engine import QueryEnginePort, TurnResult
+from .runtime import PortRuntime, RuntimeSession
+from .session_store import StoredSession, load_session, save_session
+from .system_init import build_system_init_message
 from .tools import PORTED_TOOLS, build_tool_backlog

 __all__ = [
    'ParityAuditResult',
    'PortManifest',
+    'PortRuntime',
    'QueryEnginePort',
+    'RuntimeSession',
+    'StoredSession',
+    'TurnResult',
    'PORTED_COMMANDS',
    'PORTED_TOOLS',
    'build_command_backlog',
    'build_port_manifest',
+    'build_system_init_message',
    'build_tool_backlog',
+    'load_session',
    'run_parity_audit',
+    'save_session',
 ]
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Yeachan-Heo	d621f5d5d8	Establish a harness-first Rust port foundation This creates a new rust/ workspace for the compatibility-first port effort, adds a README that explains the milestone and verification commands, links the new Rust docs from the repository root, and seeds a minimal CLI/runtime/registry/harness skeleton that can read the upstream TypeScript sources. Constraint: Initial delivery had to stay inside rust/ except for the root README pointer Constraint: The workspace started empty, so the first milestone needed proof-oriented scaffolding before broader porting Rejected: Wait for tmux worker integration output \| local verified implementation finished first and worker merges conflicted with local files Rejected: Start with a feature-complete CLI rewrite \| too risky without manifest and bootstrap harness scaffolding Confidence: medium Scope-risk: moderate Reversibility: clean Directive: Grow compatibility from extracted manifests and tests before claiming drop-in parity Tested: cargo fmt --all; cargo check --workspace; cargo test --workspace; cargo run -p rusty-claude-cli -- --help; cargo run -p rusty-claude-cli -- dump-manifests; cargo run -p rusty-claude-cli -- bootstrap-plan Not-tested: Real command execution parity; state/config fixture round-trips; bridge/MCP/plugin protocol replay Related: /home/bellman/Workspace/rusty-claude-code/.omx/plans/prd-rust-port-claude-code-dropin-cli.md Related: /home/bellman/Workspace/rusty-claude-code/.omx/plans/test-spec-rust-port-claude-code-dropin-cli.md	2026-03-31 15:11:08 +00:00
sigridjineth	c941e95fc7	docs: emphasize leaked source and include original tweet	2026-03-31 15:11:08 +00:00
sigridjineth	c9f7b96e7d	docs: rewrite README in English	2026-03-31 15:11:08 +00:00
sigridjineth	66d9c1e420	docs: add comprehensive README with architecture analysis	2026-03-31 15:11:08 +00:00
sigridjineth	caad05016e	init: add source code from src.zip	2026-03-31 15:10:58 +00:00
instructkr	2394140007	Rewriting Project Claw Code - Python port with Rust on the way	2026-03-31 08:04:29 -07:00