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.txt

@@ -1,26 +1,26 @@
-# KiCAD MCP Server - Python Dependencies
-# Production dependencies only
-
-# KiCAD Python API (IPC - for future migration)
-# kicad-python>=0.5.0  # Uncomment when migrating to IPC API
-
-# Schematic manipulation
-kicad-skip>=0.1.0
-
-# Image processing for board rendering
-Pillow>=9.0.0
-
-# SVG rendering
-cairosvg>=2.7.0
-
-# Colored logging
-colorlog>=6.7.0
-
-# Data validation (for future features)
-pydantic>=2.5.0
-
-# HTTP requests (for JLCPCB/Digikey APIs - future)
-requests>=2.32.5
-
-# Environment variable management
-python-dotenv>=1.0.0
+# KiCAD MCP Server - Python Dependencies
+# Production dependencies only
+
+# KiCAD Python API (IPC - for future migration)
+# kicad-python>=0.5.0  # Uncomment when migrating to IPC API
+
+# Schematic manipulation
+kicad-skip>=0.1.0
+
+# Image processing for board rendering
+Pillow>=9.0.0
+
+# SVG rendering
+cairosvg>=2.7.0
+
+# Colored logging
+colorlog>=6.7.0
+
+# Data validation (for future features)
+pydantic>=2.5.0
+
+# HTTP requests (for JLCPCB/Digikey APIs - future)
+requests>=2.32.5
+
+# Environment variable management
+python-dotenv>=1.0.0