Update MongoDB connection logic and comment out error handling

[Whyle]

Revise the MongoDB connection logic to accommodate different authentication scenarios and comment out error handling for document retrieval. This improves flexibility in connecting to the database.

[Copilot]

Pull Request Overview

This PR revises the MongoDB connection logic to support authentication scenarios and intentionally disables error handling for document retrieval by commenting out the related exception.

• Removed a test case that expected an HTTPException when no documents are found
• Updated document retrieval in app/routes/document.py by commenting out error handling
• Refactored database connection logic in app/database.py to use different authentication paths

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

File	Description
tests/routes/test_document.py	Removed test verifying HTTPException on empty document retrieval
app/routes/document.py	Commented out error handling for missing documents
app/main.py	Minor update with an extra newline and a log confirming DB connection
app/database.py	Introduced authentication logic using regex and environment variables

Comments suppressed due to low confidence (2)

tests/routes/test_document.py:70

• The removal of the error handling test leaves the behavior when no documents are returned unverified. Consider adding a test to ensure the application correctly handles the empty documents scenario without unexpected side effects.

@pytest.mark.asyncio

app/database.py:11

• [nitpick] This self-assignment is redundant and may be removed for clarity, unless it serves a specific documentation purpose.

MONGODB_URL = MONGODB_URL

[bazz333]