код написан

frontend/src/lib/stores/health.js

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+// [DEF:health_store:Store]
+// @TIER: STANDARD
+// @PURPOSE: Manage dashboard health summary state and failing counts for UI badges.
+// @LAYER: UI
+// @RELATION: DEPENDS_ON -> api.getHealthSummary
+
+import { writable, derived } from 'svelte/store';
+import { api } from '../api.js';
+
+/**
+ * @typedef {Object} HealthState
+ * @property {Array} items - List of dashboard health items
+ * @property {number} pass_count - Number of passing dashboards
+ * @property {number} warn_count - Number of warning dashboards
+ * @property {number} fail_count - Number of failing dashboards
+ * @property {number} unknown_count - Number of unknown status dashboards
+ * @property {boolean} loading - Loading state
+ * @property {Date|null} lastUpdated - Last successful fetch timestamp
+ */
+
+function createHealthStore() {
+    const { subscribe, set, update } = writable({
+        items: [],
+        pass_count: 0,
+        warn_count: 0,
+        fail_count: 0,
+        unknown_count: 0,
+        loading: false,
+        lastUpdated: null
+    });
+
+    /**
+     * Refresh health summary from API
+     * @param {string|null} environmentId - Optional environment filter
+     */
+    async function refresh(environmentId = null) {
+        update(s => ({ ...s, loading: true }));
+        try {
+            console.log(`[HealthStore][Action] Refreshing health summary context={{'environmentId': '${environmentId}'}}`);
+            const summary = await api.getHealthSummary(environmentId);
+            set({
+                ...summary,
+                loading: false,
+                lastUpdated: new Date()
+            });
+        } catch (error) {
+            console.error('[HealthStore][Coherence:Failed] Failed to fetch health summary:', error);
+            update(s => ({ ...s, loading: false }));
+        }
+    }
+
+    return {
+        subscribe,
+        refresh
+    };
+}
+
+export const healthStore = createHealthStore();
+
+/**
+ * Derived store for the total count of failing dashboards.
+ * Used for sidebar badges and global notifications.
+ */
+export const failingCount = derived(healthStore, $health => $health.fail_count);
+
+// [/DEF:health_store:Store]