feat(filters, recursive-routes): enhance configuration history and live data handling

- Introduced configuration history management in Filters and Recursive Routes pages, allowing users to view and restore previous configurations.
- Updated state management to handle live data loading and error states more effectively, improving user experience during data fetching.
- Added new components for displaying configuration history and integrated them into existing pages.
- Enhanced API interactions to support fetching and applying configuration revisions, ensuring data consistency across the application.
- Updated tests to cover new functionalities and ensure reliability.

Co-authored-by: Cursor <[email protected]>

backend/drizzle/0006_config_revisions.sql

@@ -0,0 +1,16 @@
+-- История desired/actual снапшотов managed-секций (фильтры, рекурсивные маршруты).
+-- Retention — prune в сервисе (последние 50 на пару server+section).
+
+CREATE TABLE IF NOT EXISTS config_revisions (
+  id TEXT PRIMARY KEY,
+  server_id BIGINT NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
+  section TEXT NOT NULL,
+  source TEXT NOT NULL,
+  fingerprint TEXT NOT NULL,
+  payload JSONB NOT NULL DEFAULT '[]'::jsonb,
+  note TEXT,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_config_revisions_server_section_created
+  ON config_revisions (server_id, section, created_at DESC);