e2e

Run (and extend) the reusable end-to-end test harness for board-steward. Use when the user wants to verify a board-steward overhaul end-to-end — multi-board routing/isolation, reconciliation (gating + real-Haiku moves), or a future feature — WITHOUT polluting their live board. Triggers: "run e2e", "/e2e", "test multi-board", "test recon end to end", "verify the overhaul", "regression test the board", "does…