Refactor code for improved readability and consistency

- Cleaned up whitespace and formatting in various files including http.py, language.py, logger.py, safe_exec.py, and SQL migration scripts.
- Consolidated import statements and removed unnecessary blank lines.
- Updated logging configuration for better clarity.
- Enhanced the safe execution code with improved error handling and logging.
- Removed commented-out code and unnecessary variables in backfill_zero_trades.py and other scripts.
- Added a pyproject.toml for Ruff and Vulture configuration.
- Introduced requirements-dev.txt for development dependencies.
- Removed commented-out stock entries in init.sql for cleaner migration scripts.

frontend_vue/.editorconfig

@@ -1,7 +1,8 @@
 [*]
 charset=utf-8
 end_of_line=lf
-insert_final_newline=false
+insert_final_newline=true
+trim_trailing_whitespace=true
 indent_style=space
 indent_size=2
 
@@ -36,4 +37,3 @@ indent_size=2
 [{.analysis_options,*.yml,*.yaml}]
 indent_style=space
 indent_size=2
-