vibed/CLAUDE.md

# CLAUDE.md — Vibesville Mono-Repo

## Repository Structure

This is a mono-repo of self-contained HTTP web services. Each service lives in its own top-level folder and is an independent Rust crate (no Cargo workspace). There is no cross-service communication — each service is a standalone application.

```
vibesville/
├── CLAUDE.md
├── README.md                # repo-wide overview with descriptions of each project
├── LICENSE-APACHE
├── LICENSE-MIT
├── flake.nix                # base Nix flake — all services inherit or extend this
├── flake.lock
├── common/                  # shared library crate (types, utilities, etc.)
│   ├── Cargo.toml
│   └── src/
│       └── lib.rs
├── <service>/
│   ├── Cargo.toml
│   ├── src/
│   │   ├── main.rs
│   │   └── tests.rs         # unit tests module
│   ├── tests/                # integration tests
│   ├── docs/
│   │   ├── PLANNING.md      # development phases and work logs
│   │   └── ARCHITECTURE.md  # component overview and interactions
│   ├── infra/                # OpenTofu infrastructure
│   │   └── main.tf
│   ├── flake.nix             # service-specific flake (inherits base)
│   └── README.md             # what, how, run, test, license, disclaimer
└── ...
```

## Tech Stack

### Language & Tooling

- **Language:** Rust (all software)
- **Local development:** Nix with Nix Flakes for dependency management
- **Infrastructure:** OpenTofu with the Cloudflare provider (stored in each service's `infra/` subfolder)
- **Formatting:** Default `rustfmt` conventions (no custom `rustfmt.toml`)

### Backend

- **Framework:** Tower + Axum
- **Runtime:** Tokio
- **Target:** Cloudflare Workers via [workers-rs](https://github.com/cloudflare/workers-rs)
- **Deployment:** OpenTofu with the Cloudflare provider (prefer over wrangler for infrastructure management)
- **API format:** JSON-encoded request and response payloads
- **API spec:** Each backend service must have an auto-generated OpenAPI spec. _TODO: choose tooling crate._

### Frontend

- **Framework:** Yew (Rust compiled to Wasm)
- **Build tool:** Trunk (`trunk serve` for local dev)
- **Compile target:** `wasm32-unknown-unknown` (must be installed: `rustup target add wasm32-unknown-unknown`)
- **Hosting:** Cloudflare Pages

### Data

- **Production database:** Cloudflare D1 (SQLite-compatible)
- **Local database:** Turso (file-backed SQLite)
- **Query layer:** SQLx

## Shared Code

The `common/` crate is a shared library for types, utilities, and definitions reused across services. Individual services depend on it via a path dependency in their `Cargo.toml`:

```toml
[dependencies]
common = { path = "../common" }
```

## Chosen Crates

When a crate is chosen to solve a problem, it becomes the standard for that purpose across all services. Add new entries here as decisions are made.

| Purpose | Crate | Notes |
|---|---|---|
| | | |

_This table is intentionally empty. Populate it as crate decisions are made during development._

## Secrets & Configuration

- **Local:** `.env` files for local secrets. **Never commit `.env` files to the repository.**
- **Production:** Wrangler secrets (`wrangler secret put <KEY>`).
- Add `.env` to `.gitignore` at both the repo root and service level.

## Running Services Locally

```sh
# Backend service (from the service directory)
cargo run

# Frontend service (from the service directory)
trunk serve
```

## Validation

Run these commands **in order** from the service directory before committing changes:

```sh
cargo fmt       # 1. consistent formatting
cargo check     # 2. code is syntactically correct
cargo clippy    # 3. code follows best practices
cargo test      # 4. code is logically valid
```

## Git Conventions

This repository follows [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/#summary).

Commit messages must use the format:

```
<type>[optional scope]: <description>

[optional body]

[optional footer(s)]
```

Common types: `feat`, `fix`, `docs`, `style`, `refactor`, `test`, `chore`, `ci`, `build`.

Use the service name as the scope when the change is scoped to a single service (e.g., `feat(my-service): add user endpoint`).

## License

All code in this repository is dual-licensed under:

- [Apache License, Version 2.0](LICENSE-APACHE)
- [MIT License](LICENSE-MIT)

This follows standard Rust ecosystem convention. Each service README should reference this dual license.

## Code Style & Documentation

### Rust

- All public functions, structs, enums, and modules must have rustdoc comments describing how they work.
- Include doc-examples where applicable — these double as doctests.
- Unit tests live in a `tests` module (`tests.rs` file) within the crate's root module or relevant submodules.
- Each service has a `tests/` directory for integration-style tests.

### Infrastructure

- Every OpenTofu `resource` and `data` block must have a comment explaining its purpose.

### Release Builds

Release builds must be compiled with settings to minimize binary size. Add this to each service's `Cargo.toml`:

```toml
[profile.release]
opt-level = "z"
lto = true
strip = true
codegen-units = 1
```

## Testing

### Structure

- **Unit tests:** `src/tests.rs` module (or submodule-local `tests` modules)
- **Integration tests:** `tests/` directory at the service root

### Coverage

- Target 80%+ code coverage; higher is better.
- _TODO: determine coverage tooling (e.g., `cargo-tarpaulin`, `cargo-llvm-cov`)._

## Project Documentation

Each service must maintain the following:

### README.md

Covers:
- What the project is
- How it works
- How to run it
- How to test it
- License (Apache-2.0 + MIT dual license)
- Disclaimer that the software was written with Claude Code (include the specific model used)

### docs/PLANNING.md

- Development phases
- Work logs
- Kept up to date as work progresses

### docs/ARCHITECTURE.md

- Component overview
- How components interact

### Task Tracking

Tasks are tracked with **Beads**. The markdown docs (PLANNING, ARCHITECTURE) are for human-readable documentation only — not task management.

## Repo-Wide Files

| File | Purpose |
|---|---|
| `CLAUDE.md` | This file — conventions and instructions for Claude Code |
| `README.md` | Repo overview with a description of each service |
| `LICENSE-APACHE` | Apache 2.0 license text |
| `LICENSE-MIT` | MIT license text |
| `flake.nix` | Base Nix flake — all service flakes inherit or extend this |
| `common/` | Shared library crate for cross-service types and utilities |

## Nix

- All local development uses Nix.
- Dependencies are managed with Nix Flakes.
- The repo root has a base `flake.nix` that services should either use directly or inherit and extend with their own `flake.nix`.