use-event-metadata 0.1.0

# use-event-metadata

Ordered string metadata entries for `RustUse` event primitives.

## Install

```toml
[dependencies]
use-event-metadata = "0.1.0"
```

## Example

```rust
use use_event_metadata::EventMetadata;

let mut metadata = EventMetadata::with_entry("trace_id", "abc");
metadata.insert("trace_id", "def");

assert_eq!(metadata.get("trace_id"), Some("def"));
assert_eq!(metadata.len(), 1);
```

## Scope

- Store ordered string key/value metadata entries.
- Update an existing key or append a new entry.
- Keep metadata dependency-free and serialization-free.

## Non-Goals

- No typed metadata schema.
- No header or protocol mapping.
- No persistence or indexing.

## Status

Experimental v0.1.0 primitive.

## License

Licensed under either of the following, at your option:

- Apache License, Version 2.0
- MIT license