Fix: sheet scroll, direct-edit close, mobile copy btn, service badge

Four fixes:

1. Mobile edit fullscreen scroll: the Sheet primitive's
   data-[side=bottom]:h-auto was overriding our h-[100dvh] on
   SheetForm, preventing scroll. Added data-[side=bottom]:h-[100dvh]
   to the SheetForm className to win the specificity battle.

2. Direct-edit close showed list view: when opened via editWidgetId
   (the hover edit button), saving or canceling called reset() which
   showed the widget list instead of closing the dialog. Now derives
   directEdit from editWidgetId — when true, reset() calls onClose()
   to close entirely.

3. Copy button missing on mobile: MobileWidgetSections didn't pass
   onCopy to its WidgetInstanceCard instances. Now accepts and wires
   onCopyWidget, so referenced widgets show the copy/detach button on
   mobile too.

4. Service enabled badge stale: ServiceConfigEditor showed
   instance.enabled (the initial prop) instead of the local enabled
   state. Now reads the local enabled variable so the badge updates
   when the user toggles the switch.

128 tests pass; 0 lint errors; build clean.

frontend/src/components/WidgetConfigDialog.tsx

@@ -228,6 +228,9 @@ export function WidgetConfigDialog({
 
 	const [draft, setDraft] = useState<Draft | null>(null);
 	const [draftBaseline, setDraftBaseline] = useState<Draft | null>(null);
+	// When opened via editWidgetId, closing the edit should close the dialog
+	// entirely (not fall back to the list view).
+	const directEdit = Boolean(editWidgetId);
 
 	// When editWidgetId is set and the dialog opens, auto-enter edit mode for
 	// that widget (instead of showing the list view).
@@ -281,6 +284,12 @@ export function WidgetConfigDialog({
 	}
 
 	function reset() {
+		// If we were opened via direct edit, closing should close the dialog
+		// entirely, not fall back to the list view.
+		if (directEdit) {
+			onClose();
+			return;
+		}
 		setDraft(null);
 		setDraftBaseline(null);
 	}