klieo-core 0.41.3

Core traits + runtime for the klieo agent framework.
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# klieo-core

Core traits + runtime for the klieo agent framework.

Part of the [klieo](https://crates.io/crates/klieo) Rust agent framework.

## What it is

`klieo-core` defines the trait surface that all klieo crates program against.
Implement these traits once; swap implementations without touching agent code.

## Trait surface

| Trait / Type | Purpose |
|---|---|
| `Agent` | Runnable agent with typed input/output |
| `SimpleAgent` | Built-in single-LLM agent implementation |
| `Tool` / `ToolInvoker` | Callable tool + dispatcher |
| `LlmClient` | LLM completion provider |
| `ShortTermMemory` | Ephemeral key-value memory |
| `LongTermMemory` | Persistent / vector memory |
| `EpisodicMemory` | Append-only episode log |
| `Pubsub` | Publish/subscribe bus |
| `RequestReply` | RPC over bus |
| `KvStore` | Distributed key-value store |
| `JobQueue` | Durable work queue |
| `ServerOutbound` | Server-initiated outbound requests (MCP/A2A) |

## Usage

`klieo-core` is the dependency boundary. Your agent code depends on it;
concrete implementations live in crates like `klieo-llm-ollama`,
`klieo-bus-nats`, etc. The umbrella crate `klieo` re-exports everything.

```toml
[dependencies]
klieo-core = "0.38"
```

```rust
use klieo_core::tool::{Tool, ToolCtx};
use klieo_core::error::ToolError;
use async_trait::async_trait;

struct MyTool;

#[async_trait]
impl Tool for MyTool {
    fn name(&self) -> &str { "my_tool" }
    fn description(&self) -> &str { "Does something useful." }
    fn json_schema(&self) -> &serde_json::Value {
        static SCHEMA: std::sync::OnceLock<serde_json::Value> = std::sync::OnceLock::new();
        SCHEMA.get_or_init(|| serde_json::json!({}))
    }

    async fn invoke(
        &self,
        _args: serde_json::Value,
        _ctx: ToolCtx,
    ) -> Result<serde_json::Value, ToolError> {
        Ok(serde_json::json!({ "result": "ok" }))
    }
}
```

Or use the `#[tool]` macro from `klieo-macros` for less boilerplate.

## Status

`0.38.x` — pre-1.0; patch releases are backward-compatible.
See [`docs/SEMVER.md`](https://github.com/mohrimic/klieo/blob/main/docs/SEMVER.md).

## License

MIT — see [`LICENSE`](https://github.com/mohrimic/klieo/blob/main/LICENSE).