002 array literal imported type

// ============================================================================
// BUG 991: Array Literals with Imported Types Use Invalid Syntax
// ============================================================================
//
// Issue: When creating array literals in flows using types from imported
// modules, the generated Zig uses `:` syntax which is invalid.
//
// Expected Zig:  &[_]koru_mylib.Handle{ h1, h2 }
// Actual Zig:    &[_]mylib:Handle{ h1, h2 }    ❌ INVALID! (':' is not Zig)
//
// This affects creating arrays/slices of imported types in flow arguments.
//
// Discovered while building $std/threading library (test 2006)
// ============================================================================

const std = @import("std");
~import $std/threading

// Create some handles
~event makeHandle { id: u64 }
| made { handle: threading:WorkerHandle }

~proc makeHandle {
    // Create a dummy handle (just for testing codegen)
    const handle = threading:WorkerHandle{
        .thread = undefined,
        .result_ptr = undefined,
    };
    return .{ .made = .{ .handle = handle } };
}

// Event that accepts array of handles
~event joinHandles { handles: []const threading:WorkerHandle }
| joined {}

~proc joinHandles {
    return .{ .joined = .{} };
}

// Try to use array literal with imported type
~makeHandle(id: 1)
| made h1 |> makeHandle(id: 2)
    | made h2 |> joinHandles(handles: &[_]threading:WorkerHandle{ h1.handle, h2.handle })
        | joined |> _