co-mono/packages/coding-agent/docs/development.md
Mario Zechner 5340862910 docs(coding-agent): update README-NEW.md, tui.md, add new docs
- README-NEW.md: add environment variables, philosophy extras (no built-in to-dos, no background bash), session ID support, pi config command, plain git URLs, version pinning
- tui.md: fix hooks->extensions terminology, update Component interface (invalidate required, add wantsKeyRelease)
- Add new docs: settings.md, development.md, json.md
- Add screenshots: tree-view.png, doom-extension.png
2026-01-26 02:27:19 +01:00

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# Development
See [AGENTS.md](../../../AGENTS.md) for additional guidelines.
## Setup
```bash
git clone https://github.com/badlogic/pi-mono
cd pi-mono
npm install
npm run build
```
Run from source:
```bash
./pi-test.sh
```
## Forking / Rebranding
Configure via `package.json`:
```json
{
"piConfig": {
"name": "pi",
"configDir": ".pi"
}
}
```
Change `name`, `configDir`, and `bin` field for your fork. Affects CLI banner, config paths, and environment variable names.
## Path Resolution
Three execution modes: npm install, standalone binary, tsx from source.
**Always use `src/config.ts`** for package assets:
```typescript
import { getPackageDir, getThemeDir } from "./config.js";
```
Never use `__dirname` directly for package assets.
## Debug Command
`/debug` (hidden) writes to `~/.pi/agent/pi-debug.log`:
- Rendered TUI lines with ANSI codes
- Last messages sent to the LLM
## Testing
```bash
./test.sh # Run non-LLM tests (no API keys needed)
npm test # Run all tests
npm test -- test/specific.test.ts # Run specific test
```
## Project Structure
```
packages/
ai/ # LLM provider abstraction
agent/ # Agent loop and message types
tui/ # Terminal UI components
coding-agent/ # CLI and interactive mode
```