Release v4.9.6

[gummy789j]

Summary

This PR builds on standard CLI stdin credential input and adds:

• Standard CLI Ledger signing support
• Standard CLI address book / alias support
• Hardening fixes for Ledger timeout state and alias persistence
• Version bump to v4.9.6

Changes

Ledger support for standard CLI

• Adds non-interactive Ledger signing for standard CLI wallet-authenticated commands.
• Uses the selected Ledger keystore’s stored BIP44 path and address.
• Requires normal keystore auth via MASTER_PASSWORD / --password-stdin.
• Suppresses legacy Ledger stdout noise so JSON output remains machine-readable.
• Emits structured ledger_* errors:
  • ledger_not_connected
  • ledger_app_not_open
  • ledger_sign_by_hash_disabled
  • ledger_unsupported_contract
  • ledger_already_signing
  • ledger_user_rejected
  • ledger_timeout
  • ledger_sign_failed
• Adds Ledger timeout state tracking so stale signing state does not block later standard CLI commands.

Address book alias support

• Adds per-network alias files under Wallet/aliases/<network>.json.
• Adds built-in token aliases for supported networks.
• Adds alias commands:
  • alias-add
  • alias-remove
  • alias-list
  • alias-resolve
• Supports typed alias resolution:
  • account-position options resolve account aliases
  • contract/token-position options resolve token aliases
• Adds JSON audit metadata for resolved aliases under meta.resolved.
• Keeps raw Base58Check and hex TRON addresses working directly.

Hardening fixes

• Prevents malformed user alias files from being treated as empty during mutating alias commands.
• Rejects invalid token decimals outside 0..18.
• Ensures Ledger quiet-mode singleton state is reset on production adapter exceptions.
• Separates Ledger timeout from user rejection by adding explicit timeout state.

Docs and QA

• Updates standard CLI contract spec.
• Adds Ledger standard CLI user manual section.
• Adds Ledger smoke QA doc.
• Adds alias QA script.

Testing

Targeted tests passed:

./gradlew test --tests 'org.tron.walletcli.cli.aliases.*' \
  --tests org.tron.walletcli.cli.ledger.NonInteractiveLedgerSignerTest \
  --tests org.tron.walletcli.cli.StandardCliRunnerTest