feat(asb-controller): withdraw bitcoin

[binarybaron]

• fix(arti): Workaround for when the machine is running in a managed work-environment
• feat(asb, asb-controller): add refresh_bitcoin_wallet and withdraw_btc commands

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Note

High Risk
Adds new JSON-RPC methods that can broadcast Bitcoin spend transactions and force wallet resync; mistakes or exposure of the RPC endpoint could directly impact funds.

Overview
Adds writable wallet operations over ASB JSON-RPC. Introduces withdraw_btc (amount in satoshis, null to sweep) and refresh_bitcoin_wallet methods to swap-controller-api, implements them in the ASB RPC server, and exposes matching asb-controller commands (parsing human-friendly bitcoin::Amount and converting to sats on the wire).

Refactors BTC withdrawal logic into a shared bitcoin_wallet::withdraw helper used by both the ASB/CLI withdrawal path and the new controller RPC.

Tor reliability workaround: sets ARTI_FS_DISABLE_PERMISSION_CHECKS=1 during Tor client creation in both swap and libp2p-rendezvous-node to avoid failures on managed systems, and documents the new commands in CHANGELOG.md.

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[binarybaron]

@Einliterflasche Please review.

[binarybaron]

bugbot run

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