A report with no path is printed with its title run into the dashes

[gilramir]

Found against: gren 0.6.6, gren-lang/compiler-node 5.0.0, node 22
Reproduction: https://github.com/gilramir/gren-bug-reports/tree/main/2026-09-17-report-title-dashes

Cli.Report.toString puts a space between the title and the dashes when the
report has a path, and none when it has no path, so every path-less report the
CLI prints (INCOMPATIBLE PACKAGE, PROBLEM INSTALLING PACKAGE, CANNOT FIND COMPATIBLE VERSION, ...) reads -- TITLE-----. The compiler's own reports have
the space.

	header
printed	-- INCOMPATIBLE PACKAGE--------------------------------------------------------
expected	-- INCOMPATIBLE PACKAGE -------------------------------------------------------

Reproduction

A node application that lists gren-lang/browser:

{
 "type": "application",
 "platform": "node",
 "source-directories": ["src"],
 "gren-version": "0.6.6",
 "dependencies": {"direct": {"gren-lang/core": "7.4.2", "gren-lang/browser": "6.0.0"}, "indirect": {"gren-lang/url": "6.0.0"}}
}

src/Main.gren:

module Main exposing (main)

import Node

main = Node.defineSimpleProgram (\_ -> Node.endSimpleProgram (Node.startProgram {}))

Output:

$ gren make Main --output=/dev/null
-- INCOMPATIBLE PACKAGE--------------------------------------------------------

gren-lang/browser targets the browser platform.

However, the current project targets the node, which is not compatible.

Also: The report's second sentence also lacks a word: "targets the node" should be
"targets the node platform".

Cause

In src/Cli/Report.gren, the Just path branch of errorBarEnd writes
" " ++ makeDashes (5 + ...) ++ " " ++ pathStr, and the Nothing branch writes
makeDashes (4 + String.unitLength title) with no space.