Modernize Rust codebase: Update to Rust 2024, enhance clippy lints, and general improvements (#1694)

- Update Cargo.toml to Rust 2024 edition with comprehensive metadata
- Add strict clippy configuration with proper priority handling
- Fix chrono deprecation warnings in DateTime and NaiveDate usage
- Replace unwrap() calls with safe pattern matching
- Update dependencies to latest versions
- Enhance Makefile with development targets (check, clippy, fmt, test, clean, help)
- Add comprehensive lint groups for better code quality enforcement
- Maintain backward compatibility while modernizing codebase

Author: mre

Makefile

@@ -1,7 +1,38 @@
-.PHONY: render
+# Static Analysis Tools Repository Makefile
+
+.PHONY: render render-skip-deprecated check clippy fmt test clean help
+
+# Default target shows help
+help:
+	@echo "Available targets:"
+	@echo "  render              - Render README.md and JSON API from YAML sources"
+	@echo "  render-skip-deprecated - Render without deprecated tools"
+	@echo "  check               - Run cargo check"
+	@echo "  clippy              - Run clippy lints"
+	@echo "  fmt                 - Format Rust code"
+	@echo "  test                - Run tests"
+	@echo "  clean               - Clean build artifacts"
+	@echo "  help                - Show this help"
+
+# Main rendering targets
 render:
 	cargo run --manifest-path data/render/Cargo.toml -- --tags data/tags.yml --tools data/tools --md-out README.md --json-out data/api
 
-.PHONY: render-skip-deprecated
 render-skip-deprecated:
-	cargo run --manifest-path data/render/Cargo.toml -- --tags data/tags.yml --tools data/tools --md-out README.md --json-out data/api --skip-deprecated
+	cargo run --manifest-path data/render/Cargo.toml -- --tags data/tags.yml --tools data/tools --md-out README.md --json-out data/api --skip-deprecated
+
+# Development targets
+check:
+	cargo check --manifest-path data/render/Cargo.toml
+
+clippy:
+	cargo clippy --manifest-path data/render/Cargo.toml -- -D warnings
+
+fmt:
+	cargo fmt --manifest-path data/render/Cargo.toml
+
+test:
+	cargo test --manifest-path data/render/Cargo.toml
+
+clean:
+	cargo clean --manifest-path data/render/Cargo.toml