Stage 10: external blocklist importer — backend + frontend

- blocklist_repo.py: CRUD for blocklist_sources table
- import_log_repo.py: add/list/get-last log entries
- blocklist_service.py: source CRUD, preview, import (download/validate/ban),
  import_all, schedule get/set/info
- blocklist_import.py: APScheduler task (hourly/daily/weekly schedule triggers)
- blocklist.py router: 9 endpoints (list/create/update/delete/preview/import/
  schedule-get+put/log)
- blocklist.py models: ScheduleFrequency (StrEnum), ScheduleConfig, ScheduleInfo,
  ImportSourceResult, ImportRunResult, PreviewResponse
- 59 new tests (18 repo + 19 service + 22 router); 374 total pass
- ruff clean, mypy clean for Stage 10 files
- types/blocklist.ts, api/blocklist.ts, hooks/useBlocklist.ts
- BlocklistsPage.tsx: source management, schedule picker, import log table
- Frontend tsc + ESLint clean

frontend/src/types/blocklist.ts

@@ -0,0 +1,104 @@
+/**
+ * TypeScript types for the blocklist management feature.
+ */
+
+// ---------------------------------------------------------------------------
+// Sources
+// ---------------------------------------------------------------------------
+
+export interface BlocklistSource {
+  id: number;
+  name: string;
+  url: string;
+  enabled: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface BlocklistSourceCreate {
+  name: string;
+  url: string;
+  enabled: boolean;
+}
+
+export interface BlocklistSourceUpdate {
+  name?: string;
+  url?: string;
+  enabled?: boolean;
+}
+
+export interface BlocklistListResponse {
+  sources: BlocklistSource[];
+}
+
+// ---------------------------------------------------------------------------
+// Import log
+// ---------------------------------------------------------------------------
+
+export interface ImportLogEntry {
+  id: number;
+  source_id: number | null;
+  source_url: string;
+  timestamp: string;
+  ips_imported: number;
+  ips_skipped: number;
+  errors: string | null;
+}
+
+export interface ImportLogListResponse {
+  items: ImportLogEntry[];
+  total: number;
+  page: number;
+  page_size: number;
+  total_pages: number;
+}
+
+// ---------------------------------------------------------------------------
+// Schedule
+// ---------------------------------------------------------------------------
+
+export type ScheduleFrequency = "hourly" | "daily" | "weekly";
+
+export interface ScheduleConfig {
+  frequency: ScheduleFrequency;
+  interval_hours: number;
+  hour: number;
+  minute: number;
+  day_of_week: number;
+}
+
+export interface ScheduleInfo {
+  config: ScheduleConfig;
+  next_run_at: string | null;
+  last_run_at: string | null;
+}
+
+// ---------------------------------------------------------------------------
+// Import results
+// ---------------------------------------------------------------------------
+
+export interface ImportSourceResult {
+  source_id: number | null;
+  source_url: string;
+  ips_imported: number;
+  ips_skipped: number;
+  error: string | null;
+}
+
+export interface ImportRunResult {
+  results: ImportSourceResult[];
+  total_imported: number;
+  total_skipped: number;
+  errors_count: number;
+}
+
+// ---------------------------------------------------------------------------
+// Preview
+// ---------------------------------------------------------------------------
+
+export interface PreviewResponse {
+  entries: string[];
+  total_lines: number;
+  valid_count: number;
+  skipped_count: number;
+}