Live server/MCP proof, not a test or replay.

Start each commit with T3CODE_DEV_SEED=0 vp run dev.
Copy proof-mcp.ts into apps/server/ in each checkout.
Set CHECKOUT to that checkout, OUTPUT_DIR to a new scratch directory, and PROOF_MODEL to the same available inexpensive Claude model on both sides.
Run python3 reproduce.py, or record it with headless-desktop bash record.sh (also set REPRO_DRIVER to reproduce.py).

The helper issues and revokes a full-access MCP client session through the normal authentication service. All reproduction actions use the real server /mcp endpoint. Read-only observations of the isolated database identify provider sessions; /proc identifies the exact background sleep and confirms its original PID/start identity remains alive. No provider state is mocked or edited.

Captures: identical 1234x800 terminal crop from a 1920x1080 virtual desktop, same theme and script. Stills selected only after matching decoded recording frames 500 ms apart. Recordings run at original speed.

The first three fires occur before Stop; the fourth repeats after Stop. The original background work is checked after fires 1, 2 and 3. Scheduled interval expiry itself is not exercised.

AI-assisted; verified with the tests and tools listed above.