Patch release. CLI and component-usage fixes, fully backward-compatible.

Changed

Invalid input now exits with code 1 consistently across every php artisan wirekit:* command. A few commands (wirekit:install, wirekit:verify / wirekit:doctor) previously exited 2 on a bad flag value or an invalid invocation, while the rest exited 1. They now all exit 1 — the Laravel/Artisan failure convention. Both are non-zero, so if ! command checks are unaffected; only a script branching on the specific code 2 needs to switch to 1. The wirekit:install --ignore-failed-flags help text — which wrongly implied the exit code equaled the number of failed flags — now correctly states it is 1.

Fixed

<x-wirekit::chart> now fails with a clear, actionable message instead of a cryptic "Undefined variable" error. The chart is a class-based component: written as the anonymous <x-wirekit::chart> (double colon) instead of <x-wirekit-chart> (single hyphen) it has no class to supply its data and previously threw Undefined variable $height. It now explains which tag to use and links to the docs.
php artisan wirekit:class-by-area now rejects an unknown --format instead of silently falling back to the summary. A typo'd --format=jsom previously rendered the summary and exited 0; it now exits non-zero with an Available: summary, full, json list, matching --area and every other command's option validation.
php artisan wirekit:install --diff now reports the actual layout file it would edit. The dry-run hard-coded a single layout path; it now resolves and names the same candidate the real install would touch — including the resources/views/layouts/app.blade.php convention — or lists every candidate it probes when none exist yet.

The prop-naming conventions guide now documents back-compat prop aliases. It clarifies that <x-wirekit::progress>'s variant prop is a deprecated alias of intent (both set the bar color), not the surface-treatment variant that alert / card use.