Add CLI package, config file support, and workspace setup

Add cli/ package with initial scaffolding. Add config-schema to shared
package for typed configuration. Add server config-file loader for
paperclip.config.ts support. Register cli in pnpm workspace. Add
.paperclip/ and .pnpm-store/ to gitignore. Minor Companies page fix.

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

package.json

@@ -11,7 +11,8 @@
     "test": "vitest",
     "test:run": "vitest run",
     "db:generate": "pnpm --filter @paperclip/db generate",
-    "db:migrate": "pnpm --filter @paperclip/db migrate"
+    "db:migrate": "pnpm --filter @paperclip/db migrate",
+    "paperclip": "tsx cli/src/index.ts"
   },
   "devDependencies": {
     "typescript": "^5.7.3",