Fix missing Rust function implementations causing build failure

[Copilot]

The PR registered get_build_info() and get_resource_info() in the Python module but never implemented them in Rust, causing compilation to fail.

Changes

Implemented missing Rust functions (src/lib.rs):

• get_build_info() - Parses embedded metadata.json, returns build info as HashMap
• get_resource_info() - Converts JSON resource metadata to Python dict via PyO3
• Added build.rs to capture rustc version at compile time

Fixed linting issues:

• Removed unused serde::{Deserialize, Serialize} imports
• Fixed clippy warning: empty line after doc comment in morphotactics.rs
• Updated deprecated PyObject to Py<PyAny>
• Updated Python type hints: Dict → dict
• Fixed line length violations in info.py and generate_resource_metadata.py
• Fixed BibTeX formatting: removed newlines from note field

Fixed test:

• Updated assertion to match actual formatted output (padding spaces)

Usage

from durak import get_build_info, get_resource_info, print_reproducibility_report

# Query build metadata
build_info = get_build_info()
# {'durak_version': '0.4.0', 'rust_version': '1.92.0', ...}

# Query resource checksums and versions
resources = get_resource_info()
# {'stopwords_base': {'checksum': '361908...', 'item_count': 118, ...}, ...}

# Generate reproducibility report
print_reproducibility_report()

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