feat: auto-create Microsub source to keep blogroll in sync

When the Microsub plugin is detected and no microsub source exists in
blogrollSources, automatically create one on startup so the periodic
sync picks up all Microsub feed subscriptions without manual config.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

index.js

@@ -207,8 +207,52 @@ export default class BlogrollEndpoint {
     // Store database getter for controller access
     Indiekit.config.application.getBlogrollDb = () => Indiekit.database;
 
-    // Start background sync if database is available
+    // Auto-create a Microsub source if the Microsub plugin is installed
+    // and no microsub source exists yet — keeps blogroll in sync automatically
     if (Indiekit.config.application.mongodbUrl) {
+      const application = Indiekit.config.application;
+      const ensureMicrosubSource = async () => {
+        const db = application.getBlogrollDb();
+        if (!db) return;
+
+        if (!application.collections?.has("microsub_channels")) return;
+
+        const existing = await db
+          .collection("blogrollSources")
+          .findOne({ type: "microsub" });
+        if (existing) return;
+
+        const now = new Date().toISOString();
+        await db.collection("blogrollSources").insertOne({
+          type: "microsub",
+          name: "Microsub (auto)",
+          url: null,
+          opmlContent: null,
+          channelFilter: null,
+          categoryPrefix: "",
+          feedlandInstance: null,
+          feedlandUsername: null,
+          feedlandCategory: null,
+          enabled: true,
+          syncInterval: 60,
+          lastSyncAt: null,
+          lastSyncError: null,
+          createdAt: now,
+          updatedAt: now,
+        });
+        console.log(
+          "[Blogroll] Auto-created Microsub source to keep blogroll in sync with Microsub subscriptions",
+        );
+      };
+
+      // Run after a short delay to let collections register
+      setTimeout(() => {
+        ensureMicrosubSource().catch((error) => {
+          console.error("[Blogroll] Failed to auto-create Microsub source:", error.message);
+        });
+      }, 10000);
+
+      // Start background sync
       startSync(Indiekit, this.options);
     }
   }