docs: reorganize into en/ and bg/ subfolders with numbered indices

- New docs/index.md with language selector
- docs/en/ — 01-getting-started, 02-architecture, 03-ai-integration,
  04-api-reference, 05-user-guide, 06-roadmap
- docs/bg/ — same structure in Bulgarian
- Root README.md trimmed to quick-start + links to docs/
- Removed old flat docs/ files (ARCHITECTURE.md, AI_FIRST.md, etc.)
- Added swap!/reset! examples to getting-started guides
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# Clojure/Nim
> A Clojure dialect that compiles to Nim, then to C, then to native binaries.
> A Clojure dialect that compiles to Nim → C → native binaries.
## What is this?
Clojure/Nim is an **AI-first** implementation of the Clojure language targeting the Nim ecosystem. Instead of running on the JVM or JavaScript, it compiles Clojure code directly to Nim source, which then compiles to C and finally to a native binary.
### Why?
- **Native Performance**: Compiles to C via Nim. No JVM warmup, no GC pauses.
- **Tiny Binaries**: Single-file executables, often under 1MB.
- **Nim Ecosystem**: Direct access to Nim and C libraries via FFI.
- **AI-Native**: Built for AI agents working in terminals — structured JSON REPL, batch evaluation, git integration.
[![Tests](https://img.shields.io/badge/tests-276%2B-green)]() [![Nim](https://img.shields.io/badge/nim-%3E%3D2.0-blue)]() [![License](https://img.shields.io/badge/license-MIT-yellow)]()
## Quick Start
```bash
# Clone
git clone https://gitlab.com/balvatar/lisp-nim.git
cd lisp-nim
# Build
make build
# Run a file
make check
./cljnim run examples/hello.clj
# Start human REPL
./cljnim repl
# Start AI REPL (JSON mode)
./cljnim repl --json
```
## Examples
## Documentation
### Hello World
```clojure
;; examples/hello.clj
(println "Hello, Nim world!")
(println (+ 1 2 3))
```
- **[English](docs/en/index.md)** — Getting started, architecture, AI integration, API reference
- **[Български](docs/bg/index.md)** — Първи стъпки, архитектура, AI интеграция, API справочник
```bash
$ ./cljnim run examples/hello.clj
Hello, Nim world!
6
```
## What is this?
Clojure/Nim is an **AI-first** Clojure implementation targeting the Nim ecosystem. It compiles Clojure source directly to Nim, then to C, and finally to a native binary.
### Why?
- **Native Performance** — No JVM warmup, no GC pauses
- **Tiny Binaries** — Single-file executables, often under 1MB
- **Nim Ecosystem** — Direct access to Nim and C libraries via FFI
- **AI-Native** — JSON REPL, batch evaluation, AI-assisted error messages and code generation
## Key Features
| Feature | Status |
|---------|--------|
| Compiler (Clojure → Nim → C → native) | ✅ |
| REPL with JSON protocol | ✅ |
| Macro system (`defmacro`, `syntax-quote`, `->`, `->>`) | ✅ |
| Persistent data structures (HAMT vector/map) | ✅ |
| Atoms, Agents, Channels | ✅ |
| `loop`/`recur` | ✅ |
| `try`/`catch`/`finally` | ✅ |
| AI integration (DeepSeek, OpenAI, MiMo) | ✅ |
| Cross-compilation targets (JS, WASM, shared libs) | ✅ |
| 276+ tests | ✅ |
## Example
### Functions & Recursion
```clojure
;; examples/math.clj
(defn square [x]
(* x x))
(defn factorial [n]
(if (= n 0)
1
(* n (factorial (- n 1)))))
(let [a 5]
(println (square a))
(println (factorial a)))
(println (factorial 5)) ;; => 120
```
```bash
$ ./cljnim run examples/math.clj
25
120
```
## AI-First REPL
Clojure/Nim is built for AI agents. The JSON REPL provides structured I/O perfect for programmatic interaction.
## AI-Powered Development
```bash
$ ./cljnim repl --json
{"status":"ready","ns":"user","mode":"json"}
> {"op":"eval","form":"(+ 1 2 3)"}
{"status":"ok","result":{"printed":"6"},"meta":{"ms":861}}
> {"op":"eval","form":"(defn square [x] (* x x))"}
{"status":"ok","result":{"type":"var","name":"square"}}
> {"op":"eval","form":"(square 5)"}
{"status":"ok","result":{"printed":"25"}}
> {"op":"quit"}
{"status":"ok","bye":true}
```
### Supported REPL Operations
| Operation | Description |
|---|---|
| `eval` | Evaluate a single Clojure form |
| `eval-batch` | Evaluate multiple forms at once |
| `get-defs` | List all defined vars in current session |
| `clear` | Clear all session definitions |
| `quit` | Exit the REPL |
See [`docs/AI_FIRST.md`](docs/AI_FIRST.md) for the full AI integration design.
## AI-Powered Assistance
Clojure/Nim can use paid AI APIs (DeepSeek, OpenAI, Xiaomi MiMo) to help you write and debug code.
### Setup
Set one of these environment variables:
```bash
# DeepSeek (recommended, fast & cheap)
export DEEPSEEK_API_KEY="sk-..."
# OpenAI / OpenRouter
export OPENAI_API_KEY="sk-..."
# Xiaomi MiMo
export MIMO_API_KEY="..."
./cljnim ai "function that sums a list using loop/recur"
```
### Features
**Auto-error explanation** — When compilation fails, the compiler automatically asks AI for a fix:
```bash
$ ./cljnim run broken.clj
Compilation failed
Error: type mismatch: got <int> but expected <string>
💡 AI Suggestion:
The function `greet` expects a string but you passed an integer.
Fix: (defn greet [name] (str "Hello " name))
```
**REPL AI command** — Generate code interactively:
```bash
$ ./cljnim repl
user> :ai function that calculates fibonacci using loop/recur
🤖 Thinking...
💡 AI Suggestion:
(defn fib [n]
(loop [a 0 b 1 i n]
(if (= i 0)
a
(recur b (+ a b) (dec i)))))
```
**CLI code generation** — Generate code from terminal:
```bash
$ ./cljnim ai "function that reads a file line by line"
(defn read-lines [filename]
(let [content (slurp filename)]
(clojure.string/split-lines content)))
```
## Architecture
```
Clojure Source (.clj)
Reader (EDN parser)
Macro Expansion (Clojure macros)
Analyzer (special forms, locals)
Emitter (Clojure AST → Nim AST)
Nim Compiler → C Code
C Compiler → Native Binary
```
See [`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md) for details.
## Project Structure
```
├── src/
│ ├── cljnim.nim # CLI entry point
│ ├── reader.nim # Clojure reader / EDN parser
│ ├── emitter.nim # Nim code generator
│ ├── repl.nim # Human & AI REPL
│ ├── eval.nim # Tree-walking interpreter
│ ├── deps.nim # Dependency resolution
│ ├── core.nim # Core runtime functions
│ ├── types.nim # Clojure value types
│ ├── macros.nim # Macro expansion engine
│ └── runtime.nim # Runtime implementation
├── lib/
│ ├── cljnim_runtime.nim # Clojure runtime in Nim
│ ├── cljnim_pvec.nim # Persistent Vector (HAMT)
│ ├── cljnim_pmap.nim # Persistent Map (HAMT)
│ └── cljnim_async.nim # core.async channels
├── examples/
│ ├── hello.clj
│ ├── math.clj
│ ├── core.clj
│ ├── macros.clj
│ ├── ffi.clj
│ ├── interop.clj
│ └── ai_tools.clj
├── docs/ # Documentation (EN + BG)
├── tests/
├── Makefile
└── cljnim.nimble
```
## Supported Features
### Working Now ✅
- Reader: numbers, strings, symbols, keywords, lists `()`, vectors `[]`, maps `{}`
- Special forms: `def`, `defn`, `fn`, `let`, `if`, `do`, `quote`
- Arithmetic: `+`, `-`, `*`, `/`, `=`, `<`, `>`
- Functions: `println`, `map`, `filter`, `reduce`
- Human REPL and JSON REPL
- AOT compilation to native binaries
- Persistent data structures (Vector, Map, Set) via HAMT
- Macro system (`defmacro`, `->`, `->>`, `and`, `or`, `when`, `cond`)
- Nim/C interop
- File and Git operations from REPL
- Tree-walking interpreter for fast REPL eval
- Atoms, Agents, and core.async channels
See [`docs/ROADMAP.md`](docs/ROADMAP.md) for the full roadmap.
## Requirements
- Nim >= 2.0
- GCC or Clang
- make
## Documentation
| Document | Description |
|---|---|
| [`docs/README.bg.md`](docs/README.bg.md) | Българско README |
| [`docs/GUIDE.md`](docs/GUIDE.md) | User guide (English) |
| [`docs/GUIDE.bg.md`](docs/GUIDE.bg.md) | Ръководство за потребителя |
| [`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md) | Architecture & design |
| [`docs/ARCHITECTURE.bg.md`](docs/ARCHITECTURE.bg.md) | Архитектура и дизайн |
| [`docs/AI_FIRST.md`](docs/AI_FIRST.md) | AI-first design philosophy |
| [`docs/AI_FIRST.bg.md`](docs/AI_FIRST.bg.md) | AI-first философия |
| [`docs/API.md`](docs/API.md) | REPL API reference |
| [`docs/API.bg.md`](docs/API.bg.md) | REPL API референция |
| [`docs/ROADMAP.md`](docs/ROADMAP.md) | Development roadmap |
| [`docs/ROADMAP.bg.md`](docs/ROADMAP.bg.md) | Пътна карта |
See [docs/en/03-ai-integration.md](docs/en/03-ai-integration.md) for details.
## License
MIT License — see [LICENSE](LICENSE).
## Acknowledgments
- [Clojure](https://clojure.org/) — Rich Hickey and team
- [Nim](https://nim-lang.org/) — Andreas Rumpf and community
- Inspired by ClojureScript, Babashka, Ferret, and Pixie
MIT — see [LICENSE](LICENSE)