Luma 0.1.0

Added

• Initial release of Luma desktop document viewer for Linux.
• PDF Viewer with full-featured page navigation, zoom controls, in-document text search, fit-to-width toggle, and native print support powered by WebKitGTK.
• Word Document Viewer (.docx) preserving heading hierarchy, bold, and italic text formatting via python-docx.
• Presentation Viewer (.pptx) with slide-by-slide navigation, shape content extraction, and thumbnail layout via python-pptx.
• Spreadsheet Viewer (.xlsx) rendering multi-sheet workbooks in tabbed grid layouts with column headers via openpyxl.
• Plain Text Viewer for .txt, .md, .rst, .log, and .csv files with monospace rendering and horizontal scroll.
• Image Viewer for .png, .jpg, .jpeg, .webp, and .svg with zoom in/out, fit-to-window, and centered viewport.
• Archive Inspector for .zip, .tar, .tar.gz, .tar.bz2, and .tar.xz with tabular file listing showing name, size, compressed size, and modification date.
• Unsupported Format Fallback displaying file metadata (name, MIME type, size) and a formatted hexadecimal preview.
• Native GNOME desktop integration using GTK4 and libadwaita with adaptive header bar and dark mode support.
• Path traversal protection and strict file validation via the security module.
• MIME type detection using both python-magic (libmagic) and mimetypes fallback.
• Command-line interface with --open and --version flags.
• Comprehensive unit test suite (26 tests) covering security validation, viewer dispatch, and format rendering.
• CI/CD pipeline with verify.yml (lint, type-check, unit tests, build dry-run, dependency audit) and release.yml (automated packaging and GitHub Releases).
• Packaging scripts for AppImage, Debian (.deb), and RPM (.rpm) formats.
• Professional documentation: README, CONTRIBUTING, SECURITY, and CHANGELOG.
• Zero telemetry, zero network access, fully offline operation.