fix: bugs 1,4,5,7,8,9 — sidebar icon, theme button, copy-link, UTM computed, workspace context, theme sync
Bug 1: sidebar toggle — single rotating SVG → two x-show SVGs (chevron-left / chevron-right)
Bug 4: theme button — template x-if → svg x-show x-cloak; apply() now resolves 'system'
to dark/light before setting data-theme (was setting data-theme="system" → CSS ignored it)
Bug 5: x-ui.copy-button added to links, bio, qr-codes rows and api-tokens new-token display
Bug 7: UtmBuilder::getFullUrlProperty() (Livewire v2 magic) → #[Computed] fullUrl()
(Livewire v3 dropped getXProperty magic — $fullUrl was undefined in blade)
Bug 8: require_workspace() moved from render() to mount() in Overview, Links/Index, Settings/Index
(Livewire update requests hit /livewire/update — ResolveWorkspace middleware never ran → threw)
Bug 9: Preferences::save() dispatches theme-changed-server → layout listener calls
Alpine.store('theme').apply(theme) so DOM updates immediately without reload
Bugs 2, 3, 6 already correct in codebase (layout had transition/ml-60 binding,
mobile sidebar used $store.sidebar.open, routes used ULID via model route key).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
boban
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