Normalize line endings to LF across entire repository

Apply .gitattributes normalization to convert all CRLF line
endings inherited from Windows-origin source files to Unix LF.
175 files, zero content changes.

.gitignore

@@ -1,22 +1,22 @@
-# Empty extraction directories
-docs/diseqc/images/
-
-# Third-party dependencies
-firmware/fx2lib/
-
-# Build artifacts
-firmware/build/
-tools/__pycache__/
-
-# TUI
-tui/.venv/
-tui/__pycache__/
-
-# MCP server
-mcp/skywalker-mcp/.venv/
-mcp/skywalker-mcp/__pycache__/
-
-# Documentation site
-site/node_modules/
-site/dist/
-site/.astro/
+# Empty extraction directories
+docs/diseqc/images/
+
+# Third-party dependencies
+firmware/fx2lib/
+
+# Build artifacts
+firmware/build/
+tools/__pycache__/
+
+# TUI
+tui/.venv/
+tui/__pycache__/
+
+# MCP server
+mcp/skywalker-mcp/.venv/
+mcp/skywalker-mcp/__pycache__/
+
+# Documentation site
+site/node_modules/
+site/dist/
+site/.astro/