1.5.0 — Watchlist scan and coarse opportunity history

Product sequence §6 first slice. Named playbooks, alerts, and the agent registry stay later. Walletless invariant unchanged: Amarok never holds keys, never signs, never submits. meta.executionSubmitted is always false.

Watch / history

• Register — POST /v1/alpha/watchlist (0.008 USDC, X402_PRICE_WATCHLIST). Body { marketAppIds } (max 25 unique positive integers). Returns a watchlistId and cursor. In-memory only (process-local); not a warehouse.
• Poll — GET /v1/alpha/watchlist?watchlistId= (same SKU). Optional cursor (origin or an ISO 5m bucket time). Response is deltas only: entered / exited / updated ranked rows for watched ids — never a full scan payload. First poll without cursor seeds entered from the latest bucket.
• History — coarse ranked snapshots (top 25 per lane: rewards / spreads / parity, ~5m buckets, 12 buckets retained) power the poll. Ranking GETs also merge into the current bucket.

Not covered by AMAROK-SESSION. Per-request 402 remains the bazaar default.

MCP: amarok_register_watchlist, amarok_poll_watchlist. Discovery capability watchlist.

Agent loop

1. Discover (GET /discovery) and pay as usual (402 → PAYMENT-SIGNATURE).
2. POST /v1/alpha/watchlist with the market ids you care about.
3. Periodically GET /v1/alpha/watchlist?watchlistId= (pass the returned cursor after the first seed poll).
4. Act on deltas; compile unsigned groups on POST /v1/alpha/execution/quotes if needed.

Deploy

Redeploy api + caddy together. Confirm X402_PRICE_WATCHLIST=0.008 on both services — app.yaml lists it. Then refresh Worker AMAROK_API_URL if the Worker still points at an old gateway build.