Add feed discovery plugin

plugins/feed-discovery/src/providers/manual-curated.ts

@@ -0,0 +1,59 @@
+import type { DiscoveredFeed, FeedDiscoveryProvider, FeedDiscoveryQuery } from "../types.js";
+
+const CURATED_FEEDS: DiscoveredFeed[] = [
+  {
+    title: "Indie Hackers",
+    description: "Stories and discussions from founders building profitable internet businesses.",
+    homepageUrl: "https://www.indiehackers.com",
+    feedUrl: "https://www.indiehackers.com/feed",
+    kind: "blog",
+    provider: "manual-curated",
+    score: 0,
+    confidence: 0.8,
+    tags: ["indie", "startup", "microsaas", "saas"]
+  },
+  {
+    title: "Hacker News",
+    description: "Technology, startup, software, and open-source discussion.",
+    homepageUrl: "https://news.ycombinator.com",
+    feedUrl: "https://news.ycombinator.com/rss",
+    kind: "news",
+    provider: "manual-curated",
+    score: 0,
+    confidence: 0.75,
+    tags: ["startups", "software", "open-source", "technology"]
+  },
+  {
+    title: "GitHub Blog",
+    description: "GitHub product, open-source, and developer ecosystem news.",
+    homepageUrl: "https://github.blog",
+    feedUrl: "https://github.blog/feed/",
+    kind: "github",
+    provider: "manual-curated",
+    score: 0,
+    confidence: 0.7,
+    tags: ["github", "open-source", "software", "developers"]
+  }
+];
+
+export class ManualCuratedProvider implements FeedDiscoveryProvider {
+  id = "manual-curated";
+  name = "Manual Curated";
+  enabledByDefault = true;
+  requiresApiKey = false;
+
+  async search(query: FeedDiscoveryQuery) {
+    const terms = normalize(query.q);
+    return CURATED_FEEDS.filter((feed) => {
+      if (query.type && query.type !== "all" && feed.kind !== query.type) {
+        return false;
+      }
+      const haystack = normalize([feed.title, feed.description, feed.homepageUrl, feed.feedUrl, feed.tags.join(" ")].join(" "));
+      return terms.length === 0 || terms.some((term) => haystack.includes(term));
+    }).map((feed) => ({ ...feed, provider: this.id }));
+  }
+}
+
+function normalize(value: string) {
+  return value.toLowerCase().split(/[^a-z0-9]+/).filter(Boolean);
+}