feat(trezor): add hidden-wallet passphrase selection and on-chain watcher

[coreyphillips]

Description

Adds Trezor hidden-wallet passphrase selection and an on-chain event watcher, built on bitkit-core 0.1.66 (bumped from 0.1.64), which provides the WalletSelection / PassphraseResponse types and the on-chain watcher FFI.

Hidden-wallet / passphrase rework

• Replaces the old blocking passphrase prompt with a proactive wallet-mode model that mirrors bitkit-android.
• The user picks Standard, passphrase on phone, or passphrase on device up front via a selector + confirmation dialog.
• The selection is bound to the THP session at connect time (currentSelection()); legacy (non-THP) devices that re-request the passphrase mid-operation are answered from the same stored value, keeping both paths in lockstep.
• Switching modes resets the device session (disconnect → reconnect), since the Trezor caches the passphrase for the lifetime of a session.
• Removes the now-dead needsPassphrasePublisher / submitPassphrase / acknowledgeOnDevicePassphrase plumbing.

On-chain event watcher

• New "Event Watcher" section subscribes an xpub to live Electrum updates with no device connected. Shows balance, block height, account type, transaction count, recent transactions, and a rolling event log.
• TrezorEventListener bridges the Rust background callback onto @MainActor.
• The watcher remains available across Trezor connects/disconnects, is stopped explicitly via Stop Watching, and is torn down on network switch.
• The account-type selector can override ambiguous xpub/tpub lookups for balance, history, transaction detail, and watcher startup.

Fixes

• PIN pad now supports up to 50 digits (the real Trezor limit), with dots that wrap across rows instead of overflowing a single line.

Changelog

• Added changelog.d/next/574.added.md.

Dependencies

• bitkit-core 0.1.66 (Package.resolved + project.pbxproj updated).

[jvsena42]

Starting review

[jvsena42]

could've reused existing UI components like CaptionMText / CaptionText / BodySText / FootnoteText / PrimaryButtonView / SecondaryButtonView / RectangleButton
Not blocking for this PR because the previous Trezor dev screens were also implemented like this, but could be a follow up PR

[coreyphillips]

see #574 (comment)

Addressed in this commit.

[jvsena42]

Tested

• Test vectors
• Taproot
  • Set tpub
  • Don't recognized in auto mode (expected)
  • switch to Taproot type
  • Transactions and balance tracked
  • Received taproot transaction
  • Event recognized
  • Mined 1 block
  • Confirmed and unconfirmed balances updated
• Native Segwit
  • Set pub
  • Auto mode worked
  • switch to Segwit type
  • Transactions and balance tracked
  • Received segwit transaction
  • Event recognized
  • Mined 1 block
  • Confirmed and unconfirmed balances updated