043 runtime run scope

// Test: std/runtime:run parses and executes using scope lookup

~import std/runtime
~import std/io

const std = @import("std");

~pub event greet { name: []const u8 }
| greeted []const u8

~proc greet|zig {
    return .{ .greeted = name };
}

~std/runtime:register(scope: "api") {
    greet(1)
}

const TEST_SOURCE = "~greet(name: \"World\")";

~std/runtime:run(source: TEST_SOURCE, scope: "api")
| result _ |> std/io:print.ln("OK")
| exhausted _ |> std/io:print.ln("EXHAUSTED")
| parse-error _ |> std/io:print.ln("PARSE ERROR")
| validation-error _ |> std/io:print.ln("VALIDATION ERROR")
| shape-error _ |> std/io:print.ln("SHAPE ERROR")
| event-denied _ |> std/io:print.ln("EVENT DENIED")
| dispatch-error _ |> std/io:print.ln("DISPATCH ERROR")
| scope-not-found _ |> std/io:print.ln("SCOPE NOT FOUND")