Update framework configuration and clean up obsolete specs

Configuration updates:
- Added .env.example template for environment variables
- Updated README.md with better setup instructions (.env usage)
- Enhanced .claude/settings.local.json with additional Bash permissions
- Added .claude/CLAUDE.md framework documentation

Spec cleanup:
- Removed obsolete spec files (language_selection, mistral_extensible, template, theme_customization)
- Consolidated app_spec.txt (Claude Clone example)
- Added app_spec_model.txt as reference template
- Added app_spec_library_rag_types_docs.txt
- Added coding_prompt_library.md

Framework improvements:
- Updated agent.py, autonomous_agent_demo.py, client.py with minor fixes
- Enhanced dockerize_my_project.py
- Updated prompts (initializer, initializer_bis) with better guidance
- Added docker-compose.my_project.yml example

This commit consolidates improvements made during development sessions.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

prompts.py

@@ -28,6 +28,11 @@ def get_coding_prompt() -> str:
     return load_prompt("coding_prompt")
 
 
+def get_coding_prompt_library() -> str:
+    """Load the library-specific coding agent prompt (for type safety & documentation projects)."""
+    return load_prompt("coding_prompt_library")
+
+
 def copy_spec_to_project(project_dir: Path) -> None:
     """Copy the app spec file into the project directory for the agent to read."""
     spec_source = PROMPTS_DIR / "app_spec.txt"