chore: normalize all tracked files to LF line endings

Mechanical application of the `.gitattributes` rules from the prior commit.
All 50 files differ only in line endings — verified by
`git diff --cached --ignore-all-space` being empty.

Before: main had 42 CRLF + 27 LF Python files plus mixed-ending in YAML,
templates, and shell scripts. After: every text file is LF (except the
Windows-native *.ps1, *.bat scripts which remain CRLF per gitattributes).

This eliminates the noisy-diff failure mode seen in PR #102, where a
small logic change produced a 918-line diff due to whole-file CRLF→LF
conversion.

requirements-dev.txt

@@ -1,29 +1,29 @@
-# KiCAD MCP Server - Development Dependencies
-# Testing, linting, and development tools
-
-# Include production dependencies
--r requirements.txt
-
-# Testing framework
-pytest>=7.4.0
-pytest-cov>=4.1.0
-pytest-asyncio>=0.21.0
-pytest-mock>=3.11.0
-
-# Code quality
-black>=23.7.0
-mypy>=1.5.0
-pylint>=2.17.0
-flake8>=6.1.0
-isort>=5.12.0
-
-# Type stubs
-types-requests>=2.31.0
-types-Pillow>=10.0.0
-
-# Pre-commit hooks
-pre-commit>=3.3.0
-
-# Development utilities
-ipython>=8.14.0
-ipdb>=0.13.13
+# KiCAD MCP Server - Development Dependencies
+# Testing, linting, and development tools
+
+# Include production dependencies
+-r requirements.txt
+
+# Testing framework
+pytest>=7.4.0
+pytest-cov>=4.1.0
+pytest-asyncio>=0.21.0
+pytest-mock>=3.11.0
+
+# Code quality
+black>=23.7.0
+mypy>=1.5.0
+pylint>=2.17.0
+flake8>=6.1.0
+isort>=5.12.0
+
+# Type stubs
+types-requests>=2.31.0
+types-Pillow>=10.0.0
+
+# Pre-commit hooks
+pre-commit>=3.3.0
+
+# Development utilities
+ipython>=8.14.0
+ipdb>=0.13.13