General fixes

[danielebriggi]

No description provided.

[Copilot]

Pull Request Overview

This PR migrates the codebase from using the attrs library to Python's built-in dataclasses, removing an external dependency and improving the title extraction logic for documents.

• Replaces attrs decorators with standard dataclasses throughout the codebase
• Updates default field initialization to use field(default_factory=...) to avoid mutable default arguments
• Improves title extraction to require at least one word character in fallback lines
• Removes attrs dependency from project configuration

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/sqlite_rag/models/document.py	Migrates from attrs to dataclasses, fixes mutable defaults, and improves title extraction logic
src/sqlite_rag/models/chunk.py	Updates import from attrs to dataclasses
src/sqlite_rag/sqliterag.py	Adds .copy() calls to metadata parameters to prevent mutation
pyproject.toml	Removes attrs dependency
tests/test_sqlite_rag.py	Adds test for document title generation functionality
tests/models/test_document.py	Adds test case for title extraction with word requirement

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[codecov]

Codecov Report

❌ Patch coverage is 94.59459% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
tests/integration/test_engine.py	0.00%	2 Missing ⚠️

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