Revert "Studio (#4237)"

This reverts commit f08aef1804.

.gitignore

@@ -3,15 +3,6 @@ __pycache__/
 *.py[cod]
 *.class
 unsloth_compiled_cache/
-# ML artifacts (large files)
-feature/
-outputs/
-exports/
-/datasets/
-studio/backend/assets/datasets/
-unsloth_training_checkpoints/
-*.gguf
-*.safetensors
 
 # C extensions
 *.so
@@ -145,9 +136,6 @@ venv/
 ENV/
 env.bak/
 venv.bak/
-.venv_overlay/
-.venv_t5/
-environment.yaml
 
 # Spyder project settings
 .spyderproject
@@ -184,34 +172,6 @@ cython_debug/
 .ruff_cache/
 .pre-commit-cache/
 
-# PyPI configuration file and IDE/Editors
+# PyPI configuration file
 .pypirc
 .vscode
-.idea/
-.claude/
-*.swp
-*.swo
-
-# oh-my-codex
-.omx/
-
-# Firebase
-firebase-debug.log
-
-# Other
-resources/
-tmp/
-**/node_modules/
-auth.db
-
-# Local working docs
-**/CLAUDE.md
-**/claude.md
-**/AGENT.md
-**/agent.md
-docs/canvas-lab-architecture.md
-log_rtx.txt
-log.txt
-setup_leo.sh
-server.pid
-*.log