feat: add Nostr channel plugin and onboarding install defaults

Co-authored-by: joelklabo <joelklabo@users.noreply.github.com>

extensions/nostr/src/nostr-profile-import.test.ts

@@ -0,0 +1,120 @@
+/**
+ * Tests for Nostr Profile Import
+ */
+
+import { describe, it, expect, vi, beforeEach } from "vitest";
+
+import { mergeProfiles, type ProfileImportOptions } from "./nostr-profile-import.js";
+import type { NostrProfile } from "./config-schema.js";
+
+// Note: importProfileFromRelays requires real network calls or complex mocking
+// of nostr-tools SimplePool, so we focus on unit testing mergeProfiles
+
+describe("nostr-profile-import", () => {
+  describe("mergeProfiles", () => {
+    it("returns empty object when both are undefined", () => {
+      const result = mergeProfiles(undefined, undefined);
+      expect(result).toEqual({});
+    });
+
+    it("returns imported when local is undefined", () => {
+      const imported: NostrProfile = {
+        name: "imported",
+        displayName: "Imported User",
+        about: "Bio from relay",
+      };
+      const result = mergeProfiles(undefined, imported);
+      expect(result).toEqual(imported);
+    });
+
+    it("returns local when imported is undefined", () => {
+      const local: NostrProfile = {
+        name: "local",
+        displayName: "Local User",
+      };
+      const result = mergeProfiles(local, undefined);
+      expect(result).toEqual(local);
+    });
+
+    it("prefers local values over imported", () => {
+      const local: NostrProfile = {
+        name: "localname",
+        about: "Local bio",
+      };
+      const imported: NostrProfile = {
+        name: "importedname",
+        displayName: "Imported Display",
+        about: "Imported bio",
+        picture: "https://example.com/pic.jpg",
+      };
+
+      const result = mergeProfiles(local, imported);
+
+      expect(result.name).toBe("localname"); // local wins
+      expect(result.displayName).toBe("Imported Display"); // imported fills gap
+      expect(result.about).toBe("Local bio"); // local wins
+      expect(result.picture).toBe("https://example.com/pic.jpg"); // imported fills gap
+    });
+
+    it("fills all missing fields from imported", () => {
+      const local: NostrProfile = {
+        name: "myname",
+      };
+      const imported: NostrProfile = {
+        name: "theirname",
+        displayName: "Their Name",
+        about: "Their bio",
+        picture: "https://example.com/pic.jpg",
+        banner: "https://example.com/banner.jpg",
+        website: "https://example.com",
+        nip05: "user@example.com",
+        lud16: "user@getalby.com",
+      };
+
+      const result = mergeProfiles(local, imported);
+
+      expect(result.name).toBe("myname");
+      expect(result.displayName).toBe("Their Name");
+      expect(result.about).toBe("Their bio");
+      expect(result.picture).toBe("https://example.com/pic.jpg");
+      expect(result.banner).toBe("https://example.com/banner.jpg");
+      expect(result.website).toBe("https://example.com");
+      expect(result.nip05).toBe("user@example.com");
+      expect(result.lud16).toBe("user@getalby.com");
+    });
+
+    it("handles empty strings as falsy (prefers imported)", () => {
+      const local: NostrProfile = {
+        name: "",
+        displayName: "",
+      };
+      const imported: NostrProfile = {
+        name: "imported",
+        displayName: "Imported",
+      };
+
+      const result = mergeProfiles(local, imported);
+
+      // Empty strings are still strings, so they "win" over imported
+      // This is JavaScript nullish coalescing behavior
+      expect(result.name).toBe("");
+      expect(result.displayName).toBe("");
+    });
+
+    it("handles null values in local (prefers imported)", () => {
+      const local: NostrProfile = {
+        name: undefined,
+        displayName: undefined,
+      };
+      const imported: NostrProfile = {
+        name: "imported",
+        displayName: "Imported",
+      };
+
+      const result = mergeProfiles(local, imported);
+
+      expect(result.name).toBe("imported");
+      expect(result.displayName).toBe("Imported");
+    });
+  });
+});