* `examples/minimal_lsp.rs` – compact LSP server showing definition,
completion, hover, rustfmt-based formatting, and dummy diagnostics.
Advertises UTF-8 offset encoding.
* `examples/manual_test.sh` – FIFO script that streams the canonical
nine LSP packets so anyone can validate the server from two terminals.
No new runtime deps; `anyhow` stays under [dev-dependencies].
