Use current origin/main with the scenario runner and dependencies installed. Place the uploaded scenario in scripts/scenarios/. Save observe.cjs in a scratch directory. Set T3_POOL_EVIDENCE_DIR to that scratch directory and NODE_OPTIONS to --require=<scratch-directory>/observe.cjs. Set T3_SCENARIO_INHERIT_ENV=NODE_OPTIONS,T3CODE_DEV_SEED,T3_POOL_EVIDENCE_DIR and T3CODE_DEV_SEED=0. Run scenarios:prove with base 1c01db02b3d2e7c06bdcdb6d648bddb2146ff36f and head c9dcd47e49fca1e7cbac980a4e3c0f27079d668b. The hook observes real SQL requests and exposes workers to the inspector. The scenario terminates existing readers while userdata has mode 000, confirms the startup failure, restores mode 700, sends a Replay follow-up, and reloads history three times over 30+ seconds. The overlay is explicitly labeled inspector observation, not product UI.