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docs: README, example config, and Phase G completion notes
Document install, config, chat/one-shot, slash commands, workspace and safety model. Add doc/plyngent.example.toml; refresh CLAUDE and architecture.
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# plyngent
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Single-user LLM chat and agent toolkit for the terminal.
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Python **3.14+**, managed with [PDM](https://pdm-project.org/). OpenAI-compatible APIs (including DeepSeek OpenAI-compat), SQLite session memory, workspace-scoped file/process/VCS tools, and a readline REPL with slash commands.
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## Install
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```bash
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# from a clone
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pdm install
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pdm run plyngent --help
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# or editable install into your environment
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pdm install
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# entry point: plyngent
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```
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Dev checks:
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```bash
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pdm run basedpyright .
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pdm run ruff check .
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pdm run ruff format .
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pdm run pytest
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```
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## Configure
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Default config path (platformdirs):
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```bash
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plyngent config path
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plyngent config edit # opens $EDITOR (e.g. codium --wait)
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```
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Copy the example and fill in a real token:
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```bash
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cp doc/plyngent.example.toml "$(plyngent config path)"
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# then edit providers
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```
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Minimal shape:
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```toml
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[providers.local]
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preset = "openai-compatible"
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url = "https://api.openai.com/v1"
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access_key_or_token = "sk-..."
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[providers.local.models]
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"gpt-4o-mini" = { text = true }
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[agent]
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system_prompt = "You are a careful coding assistant."
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confirm_destructive = true
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max_context_tokens = 200000
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```
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Supported provider presets today: `openai`, `openai-compatible`, `deepseek` (OpenAI convention). Anthropic presets are modeled in config but not wired in the runtime client yet.
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If `[database]` is omitted (or SQLite `url` is empty/`":memory:"`), chat uses a durable file under the user data dir (e.g. `~/.local/share/plyngent/chat.db` on Linux).
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## Chat
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### Interactive REPL
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```bash
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plyngent chat
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plyngent chat --provider local --model gpt-4o-mini
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plyngent chat --workspace /path/to/project --new
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plyngent chat --session 3
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```
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| Flag | Meaning |
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|------|---------|
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| `--provider` / `--model` | Select from config (required when multiple and non-interactive) |
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| `--workspace` | Tool root (default: cwd); sessions bind to this path |
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| `--new` / `--session ID` | Fresh session vs resume by id |
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| `--tools` / `--no-tools` | Default tools on |
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| `--max-rounds` | Tool-loop rounds per turn (default 32) |
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| `--stream` / `--no-stream` | Streaming deltas (default on) |
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| `--quiet` | Less status on stderr |
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| `--yes` | Allow destructive tools without confirm (also for one-shot) |
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| `--log-level` | On the root CLI: `DEBUG`, `INFO`, `WARNING`, … |
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Sessions resume the **most recently updated** session for the current workspace unless you pass `--new` or `--session`.
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### One-shot (scripts / CI)
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```bash
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plyngent chat -p "Summarize README.md" --provider local --model gpt-4o-mini --no-stream
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echo "hello" | plyngent chat --provider local --model gpt-4o-mini
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```
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Exit codes (one-shot):
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| Code | Meaning |
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|------|---------|
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| 0 | Success |
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| 1 | Config / usage error |
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| 2 | Cancelled |
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| 3 | Turn failed (API / incomplete) |
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### Input ergonomics
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- **Multiline**: start a message with `"""`, end a later line with `"""`.
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- **`/edit`**: compose a turn in `$EDITOR` (empty buffer cancels).
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- **Tab**: completes slash commands and some arguments (provider, model, on/off, export, `/help` targets).
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### Slash commands
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Type `/help` in the REPL for the live list. Common ones:
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| Command | Purpose |
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|---------|---------|
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| `/status` | Provider, session, context/usage estimates |
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| `/history [n]` | Recent messages |
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| `/sessions` | Sessions for this workspace |
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| `/new` `/resume` `/rename` `/delete` | Session lifecycle (`/delete` confirms) |
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| `/export [md\|json] [path]` | Transcript from DB (no secrets) |
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| `/compact` | Soft-compact + model summary into a **new** session |
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| `/stream` `/verbose` `/tools` `/rounds` | Toggles and limits |
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| `/retry` | Re-run incomplete last user turn (after error/cancel) |
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| `/provider` `/model` | Switch without restarting |
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| `/quit` | Leave the REPL |
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User messages are saved immediately. On API error or Ctrl+C, partial assistant/tool output is discarded but the user message stays so `/retry` works after resume. Interactive auto-retry uses 10s / 20s / 30s delays.
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## Workspace model
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- **Workspace** = root for file/process/VCS tools (default cwd).
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- **Session** = SQLite chat bound to a workspace path.
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- Resuming a session from another directory prompts: keep session workspace, rebind to current, or abort.
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## Tools (when enabled)
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Default registry: file ops, `run_command` / PTY (Unix), read-only VCS (git), and human prompts (`ask_user` / `choose_user` / `form_user`).
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Safety defaults:
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- Paths stay under the workspace; optional `path_denylist` substrings.
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- Command basename denylist (e.g. dangerous shells/utilities).
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- Destructive tools (delete/move/overwrite) can require confirm (`confirm_destructive`; default deny in non-TTY).
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- PTY sessions: caps, idle TTL, output budget; master FD is non-inheritable; sessions closed on chat exit.
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## Usage / context (CLI)
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- **Context size** prefers API `prompt_tokens` from the last model call; otherwise a char-based estimate (~4 chars/token).
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- **Turn/session usage** sum billed completion usage across tool rounds (history is re-sent each round).
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- Soft compact can calibrate from reported `prompt_tokens`. See `/status`.
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## Other commands
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```bash
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plyngent providers # list configured providers
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plyngent config path|edit
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plyngent --log-level INFO chat ...
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```
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## Architecture (short)
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See [doc/architecture.md](doc/architecture.md) and [CLAUDE.md](CLAUDE.md) for developers.
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- **`lmproto/`** — OpenAI-compatible (+ DeepSeek) msgspec models and async SSE clients
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- **`agent/`** — tool loop, streaming, usage, compact
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- **`memory/`** — async SQLAlchemy sessions/messages
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- **`tools/`** — workspace tools
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- **`cli/`** — Click entry + slash registry (`awaitlet` bridges sync Click to async work)
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- Multi-tenant / web (`router/`, real `web/`) are **not** in scope for the single-user CLI (Phase H).
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## License
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MIT
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