T3 Code real server | Linux x86_64 | Node v26.12.1
Commit: 00c9bccddec2923830d2815ded1d2effe7bb4e40
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: 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
Signing-key file after restart: 32 bytes
Replacement differs from original: true