fix: remove fake RSS placeholder source; migrate persisted configs

tests/source-searcher.test.ts

@@ -0,0 +1,40 @@
+/**
+ * Search source dispatch regression test.
+ *
+ * RSS-type and custom sources have no directory search backend: a feed URL
+ * identifies one show, and no API exists to search "the RSS directory". They
+ * must return no results. Earlier the dispatcher fabricated fake podcasts
+ * ("<query> Daily Briefing" by "<Source> Network", with dead
+ * https://example.com/... feed URLs) from the query, which polluted every
+ * search. This test pins the empty-result contract.
+ */
+import { test, expect } from "bun:test";
+import { searchSourceByType } from "../src/utils/source-searcher";
+import { SourceType } from "../src/types/source";
+import type { PodcastSource } from "../src/types/source";
+
+const rssSource: PodcastSource = {
+  id: "rss",
+  name: "RSS Feed",
+  type: SourceType.RSS,
+  baseUrl: "",
+  enabled: true,
+};
+
+const customSource: PodcastSource = {
+  id: "my-feed",
+  name: "My Feed",
+  type: SourceType.CUSTOM,
+  baseUrl: "https://example.com/feed.rss",
+  enabled: true,
+};
+
+test("RSS sources return no directory search results", async () => {
+  const results = await searchSourceByType("blocked and reported", rssSource);
+  expect(results).toEqual([]);
+});
+
+test("custom sources return no directory search results", async () => {
+  const results = await searchSourceByType("anything", customSource);
+  expect(results).toEqual([]);
+});