feat: integrate sonner for toast notifications and enhance UI feedback

Added the sonner library for toast notifications across various components, improving user feedback for actions such as saving settings, syncing rules, and handling errors. Updated the layout to include a Toaster component for consistent notification display. Refactored alert messages in the backups, gre, and filters pages to utilize the new notification system, enhancing overall user experience.

backend/src/db/index.ts

@@ -205,6 +205,23 @@ CREATE TABLE IF NOT EXISTS scheduler_runs (
 CREATE INDEX IF NOT EXISTS idx_scheduler_runs_job_time
   ON scheduler_runs(job_key, finished_at);
 
+CREATE TABLE IF NOT EXISTS events (
+  id TEXT PRIMARY KEY,
+  created_at TEXT NOT NULL,
+  level TEXT NOT NULL,
+  event_type TEXT NOT NULL,
+  source_module TEXT NOT NULL,
+  title TEXT NOT NULL,
+  message TEXT NOT NULL,
+  entity_type TEXT,
+  entity_id TEXT,
+  payload_json TEXT
+);
+CREATE INDEX IF NOT EXISTS idx_events_created_at ON events(created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_events_level_created_at ON events(level, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_events_source_created_at ON events(source_module, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_events_event_type_created_at ON events(event_type, created_at DESC);
+
 CREATE TABLE IF NOT EXISTS servers_api_ping_settings (
   id INTEGER PRIMARY KEY,
   enabled INTEGER NOT NULL DEFAULT 0,

backend/src/db/schema.ts

@@ -426,6 +426,20 @@ export const schedulerRuns = sqliteTable("scheduler_runs", {
   resultJson:  text("result_json"),
 })
 
+/** Централизованный append-only журнал событий системы. */
+export const events = sqliteTable("events", {
+  id:           text("id").primaryKey(),
+  createdAt:    text("created_at").notNull(),
+  level:        text("level", { enum: ["critical", "warning", "info"] }).notNull(),
+  eventType:    text("event_type").notNull(),
+  sourceModule: text("source_module").notNull(),
+  title:        text("title").notNull(),
+  message:      text("message").notNull(),
+  entityType:   text("entity_type"),
+  entityId:     text("entity_id"),
+  payloadJson:  text("payload_json"),
+})
+
 export const uptimeSpeedTestRuns = sqliteTable("uptime_speed_test_runs", {
   id:                 text("id").primaryKey(),
   probeId:            text("probe_id"),
@@ -468,6 +482,7 @@ export type UptimeResourceSampleRow = typeof uptimeResourceSamples.$inferSelect
 export type UptimeSpeedProbeRow = typeof uptimeSpeedProbes.$inferSelect
 export type UptimeSpeedTestRunRow = typeof uptimeSpeedTestRuns.$inferSelect
 export type SchedulerRunRow = typeof schedulerRuns.$inferSelect
+export type EventRow = typeof events.$inferSelect
 export type EvobgpSettingsRow = typeof evobgpSettings.$inferSelect
 export type AlertTelegramSettingsRow = typeof alertTelegramSettings.$inferSelect
 export type AlertGroupRow = typeof alertGroups.$inferSelect