Add missing trailing newlines to reported api/ files

[Copilot]

Several Python files under api/ were missing a POSIX trailing newline, which creates noisy diffs and can trip file-format-sensitive tooling. This updates the reported files and adds narrow regression coverage for the exact paths called out in the issue.

• Trailing newline cleanup

  • Adds a final newline to:
    • api/analyzers/csharp/__init__.py
    • api/entities/entity.py
    • api/index.py
    • api/llm.py
    • api/prompts.py

• Regression coverage

  • Adds a focused test that asserts each reported file ends with \n
  • Keeps the check scoped to the files identified in the issue

• Example

  from pathlib import Path
  
  assert Path("api/index.py").read_bytes().endswith(b"\n")

Original prompt

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This section details on the original issue you should resolve

<issue_title>Cleanup: Several api/ files missing trailing newlines</issue_title>
<issue_description>## Description

The following files under api/ are missing POSIX-required trailing newlines:

• api/analyzers/csharp/__init__.py
• api/entities/entity.py
• api/index.py
• api/llm.py
• api/prompts.py

This can cause issues with some tools and produces noisy git diffs.

Suggested Fix

Add a trailing newline to each file. Most editors can be configured to do this automatically.

Context

Found during code review of PR #522.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Cleanup: Several api/ files missing trailing newlines #578

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Project	Deployment	Actions	Updated (UTC)
code-graph	Error		Mar 10, 2026 9:29pm