Referinta variabile mediu (Panel)

Derivat din `panel/.env` si din utilizarea la runtime in `panel/server.js` + `panel/core/db.js`.

Baza

• APP_PORT: panel bind port (default 3000)
• APP_URL: public URL used for links/callbacks
• APP_SECRET: JWT/session crypto secret
• CONNECTOR_SECRET: connector HTTP auth shared secret
• DEBUG: enables extra debug logs
• TIMEZONE (or TZ): displayed system timezone in boot logs
• CUSTOM_FONT: boot banner custom figlet font switch

Baza de date

• DB_CONNECTION: sqlite (default), mysql, mariadb, or postgres
• DB_DATABASE, DB_USERNAME, DB_PASSWORD, DB_HOST, DB_PORT for mysql/postgres

OAuth (optional)

• Discord: DISCORD_CLIENT_ID, DISCORD_CLIENT_SECRET, DISCORD_CALLBACK, DISCORD_PROVIDER
• GitHub: GITHUB_CLIENT_ID, GITHUB_CLIENT_SECRET, GITHUB_CALLBACK, GITHUB_PROVIDER