README Rust Quick Start: recursive rule returns PRS-077, and alice_id/bob_id are undefined

The Rust Quick Start in the README has two errors. Reported by email from grump.run. I checked both on main (v2.0.11).

1. Recursive rule example returns PRS-077

The README passes two rule forms to one execute() call:

db.execute(r#"(rule [(reachable ?a ?b) [?a :friend ?b]])
              (rule [(reachable ?a ?b) [?a :friend ?m] (reachable ?m ?b)])"#)?;

Since #305, the parser rejects input after the first complete form. This call now returns:

[PRS-077] unexpected trailing input after a complete form: LeftParen

Two separate execute() calls work. With the README's data, (reachable :alice ?x) then finds Bob.

The prepared statement lines use alice_id and bob_id, but the snippet never defines them. The code does not compile as pasted:

error[E0425]: cannot find value `alice_id` in this scope
error[E0425]: cannot find value `bob_id` in this scope

These are UUIDv5 values of the keyword. Only the tests show this (for example tests/prepared_statements_test.rs):

let alice_id = Uuid::new_v5(&Uuid::NAMESPACE_OID, b":alice");

Split the recursive rule into two execute() calls.
Define alice_id and bob_id in the snippet, or show a public way to get an entity ID from a keyword, if one exists.
Check other docs (wiki, minigraf-docs, crate docs) for the same multi-form pattern.

The reporter says the rest of the Quick Start worked, and the Python sample printed what its comment says.

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