The app never read the LLM_PROXY__CONFIG_PATH env var, so the systemd
service couldn't find /etc/llm-proxy/config.toml and fell back to
./data/llm_proxy.db (owned by root, readonly for llmproxy user).
- Add LLM_PROXY__CONFIG_PATH support to config loader (checks env var
before falling back to ./config.toml)
- Add LLM_PROXY__DATABASE__PATH to service env so the DB path always
resolves to /var/lib/llm-proxy/llm_proxy.db regardless of config
- Add GIT_REPO config variable with actual Gitea remote URL
- Auto-detect nologin path for Arch/Debian compatibility
- Rewrite update() to build before stopping service (minimizes downtime)
- Abort update cleanly if build fails without interrupting service
- Fix all placeholder github.com/yourusername URLs
- Add status and logs convenience commands
