pi-toolkit/README.md

# pi-toolkit

Harness-side bring-up for the [pi coding-agent](https://github.com/earendil-works/pi).

**What's here:**
- `pi-env.zsh` — loads `~/.config/pi/.env` into every shell so pi's Bedrock provider has `AWS_PROFILE` / `AWS_REGION` available.
- `keybindings.json` — mosh/tmux-friendly newline bindings (`shift+enter`, `ctrl+j`, `alt+j`).
- `settings.example.json` — template for `~/.pi/agent/settings.json` so `pi` starts without having to pass `--provider`/`--model` on every invocation.
- `install.sh` — idempotent installer wiring all three into place.

**No dependency on MemPalace.** For the palace memory layer see [`mempalace-toolkit`](https://gitea.jordbo.se/joakimp/mempalace-toolkit) — it installs a pi↔mempalace MCP bridge on top of this toolkit. The two repos compose but don't require each other, same pattern as [`opencode-toolkit`](https://gitea.jordbo.se/joakimp/opencode-toolkit) ↔ mempalace.

---

## Why this exists

Pi, out of the box on a fresh machine, has three friction points that this toolkit fixes:

1. **No model selection without `--model`.** Every invocation needs `pi --provider ... --model ...` until `~/.pi/agent/settings.json` exists with defaults. The shipped `settings.example.json` is a working eu-west-1 Bedrock template — copy, edit for your region, done.
2. **`Shift+Enter` (newline in the TUI) doesn't work over mosh/tmux.** mosh's vt220-ish emulation strips modifier keys upstream of tmux, so pi never sees the Shift bit. The shipped `keybindings.json` adds `ctrl+j` and `alt+j` fallbacks that pass through as plain control/meta bytes.
3. **Bedrock provider needs `AWS_PROFILE` and `AWS_REGION` in the shell environment at spawn time.** The shipped `pi-env.zsh` sources `~/.config/pi/.env` into every shell (`set -a; source; set +a`), so you can edit credentials in one plaintext-on-disk, encrypted-in-git-repo file.

None of this talks to MemPalace; it's all pi's own configuration surface.

---

## Install

```bash
git clone ssh://git@gitea.jordbo.se:2222/joakimp/pi-toolkit.git ~/pi-toolkit
cd ~/pi-toolkit
./install.sh
```

Requires pi to be installed first (`~/.pi/agent/` must exist). Install via:

```bash
brew install pi-coding-agent              # macOS
# or see https://github.com/earendil-works/pi for Linux
pi --help                                 # first run creates ~/.pi/agent/
```

What `install.sh` does:

| Step | Action |
|---|---|
| Symlink `keybindings.json` | `~/.pi/agent/keybindings.json` → repo. Safe to symlink: pi doesn't rewrite it. |
| Install `pi-env.zsh` | `cp` into `~/.oh-my-zsh/custom/` if oh-my-zsh detected; otherwise print shell-specific `source` snippet for `~/.zshrc` or `~/.bashrc`. Does not auto-edit rc files. |
| `settings.example.json` | **Not installed.** Installer warns if `~/.pi/agent/settings.json` is missing and prints the `cp` command. NOT symlinked because pi rewrites `settings.json` at runtime (`lastChangelogVersion` bumps) and a symlink would dirty the repo. |
| AWS env probe | If `settings.json` selects `amazon-bedrock`, warn if `AWS_PROFILE` / `AWS_REGION` not set. Silent otherwise. |

Everything is non-destructive: existing real files get backed up with a timestamp before symlinking; shell loader copy refuses to clobber local edits (prints `diff` hint and moves on). Re-runs are idempotent.

## Uninstall

```bash
./install.sh --uninstall
```

Removes the keybindings symlink and the shell-loader copy (only if content still matches the repo). Your `settings.json` is never touched.

---

## Deploying pi on a new machine

Full recipe from a clean macOS or Linux box to a working pi install. Follow in order.

### 0. Prerequisites

- Shell: zsh + oh-my-zsh recommended (the `pi-env.zsh` loader installs into `~/.oh-my-zsh/custom/`). Bash or plain zsh works too — installer prints a manual source snippet.
- `git`, pi (installed upstream), optional: `tmux` ≥ 3.2 for CSI-u extended keys on non-mosh paths.
- AWS credentials reachable via `AWS_PROFILE` (either `aws configure sso` cache or static keys in `~/.aws/credentials`) — only if using `amazon-bedrock` as pi's provider.

### 1. Dotfiles (if you keep one)

Your dotfiles repo should ship `~/.config/pi/.env` (git-crypt encrypted, containing `AWS_PROFILE` and `AWS_REGION`). Provision it first so the loader has something to source:

```bash
git clone <your-dotfiles> ~/src/dotfiles
cd ~/src/dotfiles
git-crypt unlock <key>
# Run your dotfiles provisioner (example: myconfigs)
./provision.sh --profile <profile>
```

If you don't use a dotfiles repo, create the file manually after step 3 (installer will point you at the right path).

### 2. Install pi

```bash
brew install pi-coding-agent              # macOS
# or see https://github.com/earendil-works/pi for Linux
pi --help                                 # creates ~/.pi/agent/
```

### 3. Install this toolkit

```bash
git clone ssh://git@gitea.jordbo.se:2222/joakimp/pi-toolkit.git ~/pi-toolkit
cd ~/pi-toolkit && ./install.sh
```

This symlinks `keybindings.json`, copies `pi-env.zsh`, and prints the `settings.json` bootstrap command.

### 4. Bootstrap pi settings

```bash
cp ~/pi-toolkit/settings.example.json ~/.pi/agent/settings.json
$EDITOR ~/.pi/agent/settings.json
```

Adjust the inference-profile prefix to match your AWS region:

| Region | Prefix | Example model ID |
|---|---|---|
| eu-west-1 | `eu.` | `eu.anthropic.claude-sonnet-4-6` |
| us-east-1 | `us.` | `us.anthropic.claude-sonnet-4-6` |
| non-Bedrock | (none) | `anthropic:claude-sonnet-4-6` |

Run `pi --list-models` to confirm what your credentials can actually invoke.

### 5. Verify AWS env vars in your shell

If step 1 provisioned `~/.config/pi/.env` and step 3 installed `pi-env.zsh`:

```bash
exec zsh
echo "$AWS_PROFILE  $AWS_REGION"   # should print your values
```

If empty, check that `~/.config/pi/.env` decrypted (plain text, not binary) — `git-crypt unlock` in step 1 is the usual culprit.

### 6. First run

```bash
pi   # should start with the default model, no --model needed
```

### 7. (Optional) Add MemPalace memory

If you want pi to have persistent memory across sessions, install [`mempalace-toolkit`](https://gitea.jordbo.se/joakimp/mempalace-toolkit):

```bash
uv tool install mempalace
git clone ssh://git@gitea.jordbo.se:2222/joakimp/mempalace-toolkit.git ~/mempalace-toolkit
cd ~/mempalace-toolkit && ./install.sh
```

It detects pi and symlinks a `mempalace.ts` extension into `~/.pi/agent/extensions/` that wires pi's MCP client to the palace.

### Verification checklist

```bash
# keybindings symlinked into this repo
ls -la ~/.pi/agent/keybindings.json

# shell loader installed
ls -la ~/.oh-my-zsh/custom/pi-env.zsh

# env vars loaded in a fresh shell
zsh -ic 'echo $AWS_PROFILE $AWS_REGION'

# pi starts with its defaults
pi --version

# Re-run is idempotent
./install.sh --yes   # all rows should say "already linked/installed"
```

---

## Settings template reference

`settings.example.json`:

```json
{
  "defaultProvider": "amazon-bedrock",
  "defaultModel": "eu.anthropic.claude-sonnet-4-6",
  "enabledModels": [
    "eu.anthropic.claude-sonnet-4-6",
    "eu.anthropic.claude-opus-4-7",
    "eu.anthropic.claude-haiku-4-5-20251001-v1:0"
  ]
}
```

- `defaultProvider` — most common values: `amazon-bedrock`, `anthropic`, `openai`.
- `defaultModel` — Bedrock IDs have region-specific prefixes (`eu.`, `us.`). Bare Anthropic uses `anthropic:claude-...`. Run `pi --list-models` to see what you can actually call.
- `enabledModels` — optional; restricts the model picker inside pi to this subset.

pi rewrites `settings.json` at runtime (`lastChangelogVersion` bumps on upgrade), so don't symlink this file.

## Keybindings reference

`keybindings.json`:

```json
{
  "tui.input.newLine": ["shift+enter", "ctrl+j", "alt+j"]
}
```

Over direct `kitty` / `iTerm2` / `WezTerm` with tmux configured for CSI-u extended keys, `Shift+Enter` works natively. The `ctrl+j` / `alt+j` fallbacks kick in when modifier forwarding is stripped (most commonly: mosh). Pi reads this file once at startup — restart pi after editing.

## Environment file reference

`~/.config/pi/.env` format (plaintext on disk, chmod 600, encrypt in your dotfiles repo):

```bash
AWS_PROFILE=YourBedrockProfile
AWS_REGION=eu-west-1
```

Loaded by `pi-env.zsh` via `set -a; source; set +a` — plain `KEY=VALUE`, no `export` needed. Add any other pi-scoped env vars here as the surface grows.

---

## Related repos

- [`mempalace-toolkit`](https://gitea.jordbo.se/joakimp/mempalace-toolkit) — MemPalace memory layer. Installs a pi↔mempalace MCP bridge on top of this toolkit. Optional.
- [`opencode-toolkit`](https://gitea.jordbo.se/joakimp/opencode-toolkit) — sibling repo for the opencode coding-agent. Same shape (shell loader + install.sh). Independent of this repo.
- [`opencode-devbox`](https://gitea.jordbo.se/joakimp/opencode-devbox) — Docker containers with coding agents preinstalled. Can compose pi-toolkit and mempalace-toolkit as independent layers.
- [`myconfigs`](https://gitea.jordbo.se/joakimp/myconfigs) — dotfiles repo where `~/.config/pi/.env` is tracked (git-crypt encrypted).

## License

MIT — see [`LICENSE`](LICENSE).