feat(web): page admin des sources de métadonnées et de l'automatisation

Configuration des providers (activation, priorité, clé API), réglages
d'automatisation (watch des bibliothèques, auto-enrichissement,
planifications scan/enrichissement) et déclenchement manuel, avec
client API, mocks et styles associés.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/web/src/pages/adminAutomation.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from "vitest";
+import type { MetadataSourcesConfigDto } from "@readabook/shared";
+import { metadataSourcesPayload, moveSource, normalizeMetadataSources, scheduleSummary } from "./adminAutomation";
+
+const config: MetadataSourcesConfigDto = {
+  isbnPriorityEnabled: true,
+  sources: [
+    { provider: "googlebooks", enabled: false, priority: 2, hasApiKey: true },
+    { provider: "local", enabled: false, priority: 99, hasApiKey: false },
+    { provider: "openlibrary", enabled: true, priority: 1, hasApiKey: false },
+    { provider: "bnf", enabled: false, priority: 3, hasApiKey: false }
+  ]
+};
+
+describe("admin automation helpers", () => {
+  it("keeps the local metadata source active and first", () => {
+    expect(normalizeMetadataSources(config).sources[0]).toMatchObject({
+      provider: "local",
+      enabled: true,
+      priority: 0
+    });
+  });
+
+  it("excludes the local source from the update payload", () => {
+    expect(metadataSourcesPayload(normalizeMetadataSources(config))).toEqual({
+      isbnPriorityEnabled: true,
+      sources: [
+        { provider: "openlibrary", enabled: true, priority: 1 },
+        { provider: "googlebooks", enabled: false, priority: 2 },
+        { provider: "bnf", enabled: false, priority: 3 }
+      ]
+    });
+  });
+
+  it("moves only external providers", () => {
+    const moved = moveSource(normalizeMetadataSources(config).sources, "bnf", -1);
+    expect(moved.map((source) => source.provider)).toEqual(["local", "openlibrary", "bnf", "googlebooks"]);
+  });
+
+  it("summarizes weekly schedules", () => {
+    expect(scheduleSummary({ frequency: "weekly", time: "04:30", dayOfWeek: 1 }, "Scan")).toBe("Scan chaque lundi a 04:30.");
+  });
+});