feat(spotify): implement milestone M2 auth

skills/spotify/src/cli.ts

@@ -3,6 +3,8 @@
 import minimist from "minimist";
 import { fileURLToPath } from "node:url";
 
+import { getAuthStatus, runAuthorizationFlow } from "./auth.js";
+
 export interface CliDeps {
   stdout: Pick<NodeJS.WriteStream, "write">;
   stderr: Pick<NodeJS.WriteStream, "write">;
@@ -37,8 +39,24 @@ function notImplemented(command: string): CommandHandler {
 
 export function createDefaultHandlers(): CommandHandlers {
   return {
-    auth: notImplemented("auth"),
-    status: notImplemented("status"),
+    auth: async (_args, deps) => {
+      await runAuthorizationFlow();
+      deps.stdout.write("Spotify authorization complete.\n");
+      return 0;
+    },
+    status: async (args, deps) => {
+      const status = await getAuthStatus();
+      if (args.json) {
+        deps.stdout.write(`${JSON.stringify(status, null, 2)}\n`);
+      } else {
+        deps.stdout.write(`Spotify config: ${status.configFound ? "found" : "missing"}\n`);
+        deps.stdout.write(`Spotify token: ${status.tokenFound ? "found" : "missing"}\n`);
+        if (status.tokenFound) {
+          deps.stdout.write(`Spotify token expired: ${status.tokenExpired ? "yes" : "no"}\n`);
+        }
+      }
+      return status.configFound && status.tokenFound ? 0 : 1;
+    },
     search: notImplemented("search"),
     "list-playlists": notImplemented("list-playlists"),
     "create-playlist": notImplemented("create-playlist"),