qt: filter addhdkey from RPC console history #955

Filters addhdkey arguments from RPC console history, consistent with other RPCs that handle private key material.

This prevents extended private keys from being retained in history. It also covers the mnemonic and passphrase inputs proposed in bitcoin/bitcoin#35857.

Adds a parser test verifying that the arguments are redacted.

Motivation

addhdkey accepts a BIP 32 extended private key, but its arguments are currently retained in RPC console history, unlike other RPCs that handle private key material.

The same filter would also protect the mnemonic and passphrase inputs proposed in bitcoin/bitcoin#35857.

Changes

• Add addhdkey to the RPC console sensitive-command filter.
• Add a parser test verifying that its arguments are redacted as addhdkey(…).

Tests

• ./build_gui/bin/test_bitcoin-qt — all tests passed, including RPCNestedTests::rpcNestedTests().

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Pull request overview

This PR updates the Qt RPC console’s command-history redaction to treat addhdkey as a sensitive command, preventing extended private key material (and future mnemonic/passphrase inputs) from being retained in console history.

Changes:

• Add addhdkey to the Qt RPC console historyFilter sensitive-command list.
• Extend RPCNestedTests to assert addhdkey arguments are redacted to addhdkey(…).

Reviewed changes

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