Introduce AutoMetabuilder core components and workflow packages:

- Implement core components: CLI argument parsing, environment loading, GitHub service creation, and logging configuration.
- Add support for OpenAI client setup and model resolution.
- Develop SDLC context loader from GitHub and repository files.
- Implement workflow context and engine builders.
- Introduce major workflow packages: `game_tick_loop` and `contextual_iterative_loop`.
- Update localization files with new package descriptions and labels.
- Streamline web navigation by loading items from a dedicated JSON file.

.gitignore

@@ -114,7 +114,7 @@ celerybeat.pid
 *.sage.py
 
 # Environments
-.env
+backend/.env
 .venv
 env/
 venv/
@@ -154,3 +154,8 @@ cmake-build-*/
 
 # VS Code
 .vscode/
+frontend/.next/
+frontend/node_modules/
+frontend/.env.local
+frontend/.env.development.local
+frontend/.env.production.local