un-inception/CLAUDE.md

# Claude AI Instructions for un-inception

## Commit Messages

**NEVER add Claude attribution to commit messages.** No robot emoji, no "Generated with Claude Code", no "Co-Authored-By: Claude". Just write the commit message like a human wrote it.

## Project Overview

UN CLI Inception - The UN CLI written in every language it can execute. 42 implementations, one unified interface.

## Authentication

**HMAC Authentication** (current):
```bash
export UNSANDBOX_PUBLIC_KEY="unsb-pk-xxxx-xxxx-xxxx-xxxx"
export UNSANDBOX_SECRET_KEY="unsb-sk-xxxxx-xxxxx-xxxxx-xxxxx"
```

The auth pattern for all implementations:
- `Authorization: Bearer {public_key}`
- `X-Timestamp: {unix_seconds}`
- `X-Signature: HMAC-SHA256(secret_key, "timestamp:METHOD:path:body")`

Legacy `UNSANDBOX_API_KEY` is still supported as fallback.

### HMAC Dependencies

Each implementation needs HMAC-SHA256 capability:

| Language | Dependency | Install |
|----------|------------|---------|
| Python | `hmac`, `hashlib` | Built-in |
| JavaScript/TS | `crypto` | Built-in (Node.js) |
| Ruby | `openssl` | Built-in |
| Go | `crypto/hmac` | Built-in |
| PHP | `hash_hmac()` | Built-in |
| Perl | `Digest::SHA` | Core module |
| Lua | `openssl` CLI | `apt install openssl` |
| Bash | `openssl` CLI | `apt install openssl` |
| Rust | `hmac`, `sha2` | `cargo add hmac sha2` |
| C/C++ | OpenSSL | `apt install libssl-dev` + `-lssl -lcrypto` |
| Java | `javax.crypto` | Built-in |
| C# | `System.Security.Cryptography` | Built-in |
| Haskell | `cryptonite` | `cabal install cryptonite` |
| Clojure | `buddy-core` | Add to deps.edn |
| Erlang/Elixir | `:crypto` | OTP built-in |
| Julia | `SHA` | Built-in |
| R | `openssl` | `install.packages("openssl")` |

**Note**: Languages without native HMAC (Lua, Bash, AWK, Forth) shell out to `openssl dgst -sha256 -hmac`.

## The Inception Matrix - Testing Languages Without Local Interpreters

**CRITICAL INSIGHT**: Use `un` (the C implementation) to run tests for languages not installed locally!

If a language isn't available on the local machine (e.g., PHP, Julia, Haskell), run the UN implementation through unsandbox itself:

```bash
# Key flags:
# -n semitrusted  = allow network access so inner script can call API
# -e KEY=VALUE    = pass API keys to inner script

# Don't have PHP installed? Run un.php through unsandbox!
un -n semitrusted -e UNSANDBOX_PUBLIC_KEY=$UNSANDBOX_PUBLIC_KEY -e UNSANDBOX_SECRET_KEY=$UNSANDBOX_SECRET_KEY un.php test/fib.py

# Don't have Julia? Run un.jl through unsandbox!
un -n semitrusted -e UNSANDBOX_PUBLIC_KEY=$UNSANDBOX_PUBLIC_KEY -e UNSANDBOX_SECRET_KEY=$UNSANDBOX_SECRET_KEY un.jl test/fib.py
```

This is the **inception** - using un to run un to run code. Each layer executes through unsandbox's remote execution API.

### Inception Test Matrix

To test ALL 42 implementations regardless of local interpreters:

```bash
# Use un (C implementation) to test all others through unsandbox
for impl in un.py un.js un.rb un.go un.php un.pl un.lua; do
    echo "Testing $impl..."
    un -n semitrusted \
       -e UNSANDBOX_PUBLIC_KEY=$UNSANDBOX_PUBLIC_KEY \
       -e UNSANDBOX_SECRET_KEY=$UNSANDBOX_SECRET_KEY \
       "$impl" test/fib.py
done
```

The test suite in `tests/run_all_tests.sh` currently skips languages without local interpreters. Use the inception pattern with `un` to achieve 100% test coverage.

## Directory Structure

- `un.*` - 42 UN CLI implementations (un.py, un.js, un.rb, un.go, etc.)
- `tests/` - Test suites for each implementation
- `test/` - Shared test files (fib.py, fib.sh, etc.)

## Running Tests

```bash
# Set auth
export UNSANDBOX_PUBLIC_KEY="unsb-pk-zhi3-b6cv-jvqc-uven"
export UNSANDBOX_SECRET_KEY="unsb-sk-z4a93-a33xy-7u7eh-pngpg"

# Run all available tests
./tests/run_all_tests.sh

# Run individual test
python3 tests/test_un_py.py
lua tests/test_un_lua.lua
bash tests/test_un_sh.sh
```

## Common Test Fixes

### Bash arithmetic in `set -e` mode
The pattern `((VAR++))` returns exit code 1 when VAR is 0. Use `VAR=$((VAR + 1))` instead.

### Script directory detection
- **Lua**: `arg[0]:match("(.*/)") or "./"`
- **TypeScript**: `path.dirname(process.argv[1] || __filename)`
- **Bash**: `SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"`

### Shebang lines
Shebang MUST be on line 1, not buried in license headers.

## Keeping Implementations in Sync

**CRITICAL: ALL 38 implementations must have feature parity.**

When adding a new feature to the CLI (e.g., new flag, new command):
1. Update the canonical C implementation at `~/git/unsandbox.com/cli/un.c`
2. Update ALL 38 implementations in this repo - not just "main" ones, ALL of them
3. Use the Task agent to batch update if needed

Current implementations (ALL must be updated):
```
un.awk un.clj un.cob un.cpp un.cr un.d un.dart un.erl un.ex un.f90
un.forth un.fs un.go un.groovy un.hs un.jl un.js un.kt un.lisp un.lua
un.m un.ml un.nim un.php un.pl un.pro un.ps1 un.py un.r un.raku
un.rb un.rs un.scm un.sh un.tcl un.ts un.v un.zig
```

### Feature Checklist

Each implementation must support:
- **Execute**: `un file.py` - run code with `-e ENV=val`, `-f FILE`, `-n MODE`, `-a` artifacts
- **Session**: `un session` - interactive shell with `-f FILE`, `--tmux`, `--screen`, `--list`, `--attach`, `--kill`
- **Service**: `un service` - persistent services with `-f FILE`, `--name`, `--ports`, `--bootstrap`, `--bootstrap-file`, `--list`, `--info`, `--logs`, `--destroy`

The `-f FILE` flag must work for ALL three commands (execute, session, service) - files go to `/tmp/` in the container.

## Git Remotes & Mirroring

This repo pushes to multiple remotes automatically. No git hooks needed - just uses git's built-in multi-push URL feature.

**Remotes:**
- `origin` - Primary (fetches from unturf, pushes to both)
- `github` - Public mirror at GitHub

**Configuration:**
```
origin	ssh://git@git.unturf.com:2222/engineering/unturf/un-inception.git (fetch)
origin	ssh://git@git.unturf.com:2222/engineering/unturf/un-inception.git (push)
origin	git@github.com:russellballestrini/un-inception.git (push)
github	git@github.com:russellballestrini/un-inception.git (fetch/push)
```

**Usage:**
- `git push origin` - Pushes to both unturf AND GitHub automatically
- `git push github` - Pushes only to GitHub (if needed)
- `git pull` - Pulls from unturf (origin)

**To replicate this setup:**
```bash
git remote add github git@github.com:russellballestrini/un-inception.git
git remote set-url --add --push origin ssh://git@git.unturf.com:2222/engineering/unturf/un-inception.git
git remote set-url --add --push origin git@github.com:russellballestrini/un-inception.git
```

## Related Repos

- `~/git/unsandbox.com/` - Portal (contains un.c CLI at cli/un.c)
- `~/git/api.unsandbox.com/` - API server
- https://github.com/russellballestrini/un-inception - Public GitHub mirror