Variable	Description	Default
PORT	HTTP server port (binds on 0.0.0.0)	80
LOG_LEVEL	Logging level (error, warn, info, debug, trace)	info
PROJECT_ROOT	Root directory for Git repositories	/srv/git
DB_PATH	Path to the SQLite database file	twig.db
API_KEY	Secret required to generate one-time signup invites. If unset or empty, a random key is generated and logged at startup.	Generated per process
SESSION_KEY	Secret used to sign/encrypt web session cookies. Set a stable value to keep sessions valid across restarts.	Random per process; sessions do not survive restart
RESET_DB	Set to exactly true to delete the database file at startup and seed a development admin / admin account with automatic local login.	false
CACHE_CONTROL	Cache-Control header value for static assets	public, max-age=31536000, immutable
TEST_USER	Username allowed to access the endpoint test page and manage session PINs. Set to true as a shortcut for admin. If unset, the test page is disabled.	unset
ADMIN_USER	Username allowed to inspect database tables and values in Tree → Data. If unset, database browsing is disabled.	unset
SENTRY_DSN	Sentry project DSN. If unset, Sentry instrumentation is disabled	unset
SENTRY_TRACES_SAMPLE_RATE	Fraction of transactions sent to Sentry (0.0–1.0)	1.0

For local development, mise.toml overrides several values, including PORT=8080, PROJECT_ROOT=tests/git/srv, RESET_DB=true, and TEST_USER=admin.