refactor: rename packages to @paperclipai and CLI binary to paperclipai

Rename all workspace packages from @paperclip/* to @paperclipai/* and
the CLI binary from `paperclip` to `paperclipai` in preparation for
npm publishing. Bump CLI version to 0.1.0 and add package metadata
(description, keywords, license, repository, files). Update all
imports, documentation, user-facing messages, and tests accordingly.

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

server/src/auth/better-auth.ts

@@ -3,13 +3,13 @@ import type { IncomingHttpHeaders } from "node:http";
 import { betterAuth } from "better-auth";
 import { drizzleAdapter } from "better-auth/adapters/drizzle";
 import { toNodeHandler } from "better-auth/node";
-import type { Db } from "@paperclip/db";
+import type { Db } from "@paperclipai/db";
 import {
   authAccounts,
   authSessions,
   authUsers,
   authVerifications,
-} from "@paperclip/db";
+} from "@paperclipai/db";
 import type { Config } from "../config.js";
 
 export type BetterAuthSessionUser = {