feat(pocketbase): add pocketbase dev setup and superuser script

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XJAY6Rgre8viuBjhA6djfW

.gitignore

@@ -19,6 +19,7 @@ yarn-error.log
 *.launch
 .settings/
 *.sublime-workspace
+.claude/
 
 # Visual Studio Code
 .vscode/*
@@ -39,6 +40,10 @@ testem.log
 /typings
 __screenshots__/
 
+# PocketBase
+/pocketbase/pb_data
+.env
+
 # System files
 .DS_Store
 Thumbs.db