v0.8.0

This release introduces single-instance daemon enforcement via advisory file locks, a streamlined one-line installer with precompiled static musl binaries, and significant internal codebase decluttering through modularized unit tests.

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🚀 What's New

🔒 Single-Instance Advisory Lock

• Prevent Concurrent Runs: Enforced an exclusive, non-blocking advisory file lock (batmon.lock) on startup. Prevents multiple daemon instances from polling sensors or generating duplicate SQLite samples simultaneously (#12).
• Helpful Collision Diagnostics: If an instance is already running, the new process identifies the existing PID, outputs troubleshooting information, and exits with a non-zero exit code so systemd properly honors Restart=on-failure.
• Robust Error Handling: Added proper I/O error propagation when writing PIDs and support for bare/relative lock paths.

⚡ One-Line Zero-Config Installer & Release Pipeline

• Curl-to-Bash Installer: Added a zero-dependency installation script (install.sh) supporting auto-detection of Linux CPU architectures (x86_64, aarch64), pulling precompiled binaries directly from GitHub Releases.
• Safe Installation Lifecycles: The installer now cleanly shuts down any running batmon service before file replacement and verification to avoid SQLite lock contention and database races.
• Automated musl Builds: Integrated a GitHub Actions release pipeline to build static musl binaries with accompanying SHA256 checksums published with each release.

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🧹 Code Quality & Refactoring

Test Module Extraction (#11)

• Extracted inline unit tests exceeding 100 lines across 16 core modules into dedicated child test modules (e.g., <module>/tests.rs).
• Core engine logic across alerts, thermal, daemon, cycles, sampler, processes, db, migrations, proc, config, battery, paths, and dbus is now significantly more readable and maintainable while maintaining test accessibility to private items.

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📖 Documentation

• Quick Start: Promoted the copy-paste one-line installation command to the top of the README.md.
• Test Architecture Guide: Documented the internal test layout convention and instructions for using git blame -w -C -C -C to trace history across extracted test files.