feat: add bump-version.sh script for version management

Automates version bumps across all version source files:
- Cargo.toml (PRIMARY - workspace.package.version)
- debian/changelog (prepend new entry)
- debian/control (update Version field)
- scripts/build-package.sh (update VERSION variable)
- frontend/package.json (update version field)
- Stale references check after bump

Usage: ./scripts/bump-version.sh <new_version> <old_version>

clippy.toml

@@ -0,0 +1,11 @@
+# Linux Patch Manager - Clippy Lint Configuration
+# Run: cargo clippy -- -D warnings (CI) or cargo clippy (local)
+
+# Deny all warnings in CI - warnings become errors
+cognitive-complexity-threshold = 30
+
+# Type complexity limits
+type-complexity-threshold = 300
+
+# Single character binding names threshold
+single-char-binding-names-threshold = 11