Build: Compose bitcoin-oracle

Stand up the bitcoin-oracle example under the user's own Goldsky account. A cron task fetches BTC/USD from CoinGecko and writes (timestamp, price * 100) as two bytes32 values to a PriceOracle contract via a Compose-managed wallet. It also appends the price to a Compose collection for historical queries.

This template supplies only what's specific to the bitcoin-oracle app — how it works and its source. The recommended path uses a shared, fully-unpermissioned PriceOracle on Base Sepolia, so the user deploys nothing and the Compose smart wallet is auto-created and gas-sponsored.

Step 0a — Load the base skills first

Before anything else — before you answer, ask a question, scaffold a file, or call deployComposeApp — load the two base skills this template depends on:

1. Skill(compose) — the always-on Compose guide: the golden rules (never assume anything about the app on the user's behalf; ask when unsure) and general build guidance.
2. Skill(compose-reference) — the manifest / field / API reference; consult before writing any compose.yaml or task file.

This template deliberately omits those rules and that reference — they are required to build correctly and are not repeated here. Do not proceed until both are loaded.

Mode Detection

Pick the mode from the tools available to you: