feat(fer-19) : composable usePontBascule

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/composables/usePontBascule.ts

@@ -0,0 +1,23 @@
+import { ref } from 'vue'
+import { useApi } from '~/composables/useApi'
+
+export type PontBasculeStatus = 'checking' | 'connected' | 'disconnected'
+
+export const usePontBascule = () => {
+    const api = useApi()
+    const status = ref<PontBasculeStatus>('checking')
+
+    const checkHealth = async () => {
+        status.value = 'checking'
+        try {
+            const res = await api.get<{ healthy: boolean }>('pont_bascule/health', {}, {
+                toast: false
+            })
+            status.value = res.healthy ? 'connected' : 'disconnected'
+        } catch {
+            status.value = 'disconnected'
+        }
+    }
+
+    return { status, checkHealth }
+}