chore: clean up repo root and improve .gitignore

- Remove debug scripts: check_albums.js, check_albums.ts
- Remove git-filter-repo binary from root
- Untrack server.log (was accidentally committed)
- Delete .DS_Store files
- Rewrite .gitignore with clear sections: deps, next.js,
  TypeScript, testing, logs, env, OS/editor, agent tools,
  one-off scripts, deployment, user content
- Add .Jules/ and *.log glob to .gitignore

lib/env.ts

@@ -34,7 +34,7 @@ function parseEnv(): Env {
 
   const rateLimitStr = process.env.RATE_LIMIT_RPM;
   const rateLimit =
-    rateLimitStr && !isNaN(parseInt(rateLimitStr, 10)) ? parseInt(rateLimitStr, 10) : 600;
+    rateLimitStr && !isNaN(parseInt(rateLimitStr, 10)) ? parseInt(rateLimitStr, 10) : 1500;
 
   return {
     IMMICH_API_URL: apiUrl,