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>

cli/src/config/env.ts

@@ -25,7 +25,7 @@ function parseEnvFile(contents: string) {
 function renderEnvFile(entries: Record<string, string>) {
   const lines = [
     "# Paperclip environment variables",
-    "# Generated by `paperclip onboard`",
+    "# Generated by `paperclipai onboard`",
     ...Object.entries(entries).map(([key, value]) => `${key}=${value}`),
     "",
   ];