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>

docker-compose.my_project.yml

@@ -0,0 +1,29 @@
+services:
+  my_project_frontend:
+    image: node:20
+    working_dir: /app
+    volumes:
+      - ./generations/my_project:/app
+      # Eviter de réutiliser les node_modules Windows dans le conteneur Linux
+      - /app/node_modules
+    command: ["sh", "-c", "npm install && npm run dev -- --host 0.0.0.0 --port 3000"]
+    ports:
+      - "4300:3000"
+    environment:
+      - NODE_ENV=development
+
+  my_project_server:
+    image: node:20
+    working_dir: /app/server
+    volumes:
+      - ./generations/my_project:/app
+      # Eviter de réutiliser les node_modules Windows dans le conteneur Linux
+      - /app/server/node_modules
+    command: ["sh", "-c", "npm install && npm start"]
+    ports:
+      - "4301:3001"
+    environment:
+      - NODE_ENV=development
+    depends_on:
+      - my_project_frontend
+