🖋️ Scribe: Fix execution commands and bash syntax in examples

[fderuiter]

💡 What:

• Updated bash commands in docstrings (e.g., examples/quick_start.py) and .rst files to use poetry run python examples/... instead of python examples/....
• Changed export IMEDNET_BASE_URL (optional) to # export IMEDNET_BASE_URL in RST examples.

🎯 Why:

• ModuleNotFoundError: If developers run python examples/quick_start.py from source before fully installing the package globally, it errors out because src/ isn't in sys.path. Using poetry run python guarantees it runs inside the project's virtual environment.
• Bash syntax error: Users who copy-paste export VAR_NAME (optional) into a terminal receive a syntax error bash: syntax error near unexpected token '('.

🧠 Cognitive Impact:

• Fixes first-run crash for developers cloning the project.
• Prevents copy-paste errors, creating a smoother onboarding path.

📖 Preview:

   export IMEDNET_API_KEY
   export IMEDNET_SECURITY_KEY
   export IMEDNET_STUDY_KEY
   # export IMEDNET_BASE_URL

    # Usage:
    poetry run python examples/quick_start.py

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PR created automatically by Jules for task 6940982492059089691 started by @fderuiter

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