T3 Code real server | Linux x86_64 | Node v26.12.1
Commit: d290c1f1b6c93416dfda6c9f7cd15d928a9aeb4c
Built with: vp run --filter t3 build:bundle
Fresh isolated state; T3CODE_DEV_SEED=0; loopback only; no client/theme/viewport

$ 01-initial-start: node apps/server/dist/bin.mjs serve --base-dir <disposable-state> --host 127.0.0.1 --port <port> --no-browser
server: Migrations ran successfully
server: Listening on http://127.0.0.1:<port>
server: T3 Code server is ready.
HTTP GET /.well-known/t3/environment: 200
Result: READY; stopped completely
Generated signing-key file: 32 bytes

$ 02-intact-restart: node apps/server/dist/bin.mjs serve --base-dir <disposable-state> --host 127.0.0.1 --port <port> --no-browser
server: Listening on http://127.0.0.1:<port>
server: T3 Code server is ready.
HTTP GET /.well-known/t3/environment: 200
Result: READY; stopped completely
Existing non-empty signing key unchanged: true

$ truncate signing-key file to zero bytes (server stopped)
Signing-key file before restart: 0 bytes

$ 03-empty-restart: node apps/server/dist/bin.mjs serve --base-dir <disposable-state> --host 127.0.0.1 --port <port> --no-browser
server: CryptoError: Mac.key: An HMAC key cannot be empty
Result: NOT READY; exit 1
Signing-key file after restart: 0 bytes