Refactor configuration and security features for improved development experience

- Updated the .env.example file to reflect a development environment setup with enhanced secret key requirements and local host settings.
- Modified the Docker Compose configuration to enhance security with read-only settings and no-new-privileges options.
- Updated requirements.txt to pin package versions for better dependency management.
- Enhanced the FastAPI application to include dynamic OpenAPI and documentation URLs based on the environment.
- Implemented session versioning in JWT tokens to improve security and user session management.
- Added new validation for user roles and password strength in schemas.
- Improved email sending logic to handle recipient lists more robustly and added logging for SMTP operations.
- Updated dashboard and profile templates to reflect new features and improve user experience.

requirements.txt

@@ -1,12 +1,13 @@
-fastapi
-uvicorn[standard]
-jinja2
-sqlalchemy
-alembic
-python-multipart
-httpx
-bcrypt
-python-jose[cryptography]
-pydantic-settings
-email-validator
-psycopg[binary]
+fastapi==0.115.6
+uvicorn[standard]==0.32.1
+jinja2==3.1.4
+sqlalchemy==2.0.36
+alembic==1.14.0
+python-multipart==0.0.20
+httpx==0.28.1
+bcrypt==4.2.1
+python-jose[cryptography]==3.3.0
+pydantic-settings==2.6.1
+email-validator==2.2.0
+psycopg[binary]==3.2.13
+cryptography==44.0.0