docs: unify README, setup guide, and description

[Firestone82]

Standardizes the README format and updates the repository description for consistency across all public repositories.

Changes:

• Unified section structure: About, Features, Requirements, Setup, Configuration (where applicable), License
• School projects clearly marked with VŠB-TUO attribution and course name/code
• Personal projects updated with accurate descriptions and real config examples
• Repository description updated

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Point the build command at the actual XeLaTeX entrypoint

Users following the README from the repository root cannot compile with this command: there is no root-level main.tex (the tree has src/main.tex, and the existing workflow builds with working_directory: src), and that file loads fontspec, so pdflatex is the wrong engine. In a fresh checkout this build section leads to immediate failure instead of producing the thesis PDF; update it to run from src with XeLaTeX/latexmk and the needed shell-escape settings.

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