Fix CI/CD build script fails

[sr2echa]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @sr2echa, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses CI/CD build failures by updating the pyproject.toml configuration for the ruff linter. The changes ensure that ruff's linting rules are correctly applied, resolving issues that were previously causing the build to fail.

Highlights

• Ruff Configuration Update: Refactored the ruff linter configuration in backend/pyproject.toml by moving the select and ignore rule definitions under the new [tool.ruff.lint] section. This aligns the configuration with the latest ruff syntax, resolving previous build failures.

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[gemini-code-assist]

Code Review

This pull request updates the ruff configuration in pyproject.toml to be compatible with newer versions, which fixes the CI/CD build. The change correctly moves the linting rules under the [tool.ruff.lint] section. I've added a couple of suggestions to further improve code quality by refining the selected and ignored linting rules.

[gemini-code-assist]

This is a good set of selected rules. To make your linting even more comprehensive, consider adding a few more rule sets:

• D for pydocstyle to enforce consistent docstrings.
• S for flake8-bandit to check for common security vulnerabilities.
• A for flake8-builtins to prevent accidentally shadowing Python's built-in functions.

Enabling these can help improve documentation, security, and prevent subtle bugs.

Suggested change

	select = ["E", "F", "I", "N", "W", "B", "C4", "UP", "ARG", "SIM", "TCH", "TID", "Q"]
	select = ["E", "F", "I", "N", "W", "B", "C4", "UP", "ARG", "SIM", "TCH", "TID", "Q", "D", "S", "A"]

[gemini-code-assist]

While this change correctly updates the ruff configuration format, I've noticed that some important linting rules are being ignored. Specifically, F401 (unused import) and F841 (unused variable) are disabled.

These rules are very helpful for maintaining code quality and catching potential bugs or dead code. For example, in backend/main.py, MediaBinItem and TimelineState are imported but not used. Enabling F401 would have caught this.

I recommend removing F401 and F841 from the ignore list to improve code quality. If there are specific cases where an unused variable is intentional, it's better to prefix it with an underscore (e.g., _my_var) or use a # noqa comment on the specific line.

Suggested change

	ignore = ["E501", "B008", "F401", "F841", "W293", "ARG001", "N815"]
	ignore = ["E501", "B008", "W293", "ARG001", "N815"]